Chao Yu [Sun, 5 Aug 2018 15:09:00 +0000 (23:09 +0800)]
f2fs: fix incorrect range->len in f2fs_trim_fs()
generic/260 reported below error:
[+] Default length with start set (should succeed)
[+] Length beyond the end of fs (should succeed)
[+] Length beyond the end of fs with start set (should succeed)
+./tests/generic/260: line 94: [:
18446744073709551615: integer expression expected
+./tests/generic/260: line 104: [:
18446744073709551615: integer expression expected
Test done
...
In f2fs_trim_fs(), if there is no discard being trimmed, we need to correct
range->len before return.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Sun, 5 Aug 2018 15:08:59 +0000 (23:08 +0800)]
f2fs: refresh recent accessed nat entry in lru list
Introduce nat_list_lock to protect nm_i->nat_entries list, and manage
it as a LRU list, refresh location for therein recent accessed entries
in the list.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Sun, 5 Aug 2018 15:04:25 +0000 (23:04 +0800)]
f2fs: fix avoid race between truncate and background GC
Thread A Background GC
- f2fs_setattr isize to 0
- truncate_setsize
- gc_data_segment
- f2fs_get_read_data_page page #0
- set_page_dirty
- set_cold_data
- f2fs_truncate
- f2fs_setattr isize to 4k
- read 4k <--- hit data in cached page #0
Above race condition can cause read out invalid data in a truncated
page, fix it by i_gc_rwsem[WRITE] lock.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Sun, 5 Aug 2018 15:02:22 +0000 (23:02 +0800)]
f2fs: avoid race between zero_range and background GC
Thread A Background GC
- f2fs_zero_range
- truncate_pagecache_range
- gc_data_segment
- get_read_data_page
- move_data_page
- set_page_dirty
- set_cold_data
- f2fs_do_zero_range
- dn->data_blkaddr = NEW_ADDR;
- f2fs_set_data_blkaddr
Actually, we don't need to set dirty & checked flag on the page, since
all valid data in the page should be zeroed by zero_range().
Use i_gc_rwsem[WRITE] to avoid such race condition.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Tue, 10 Jul 2018 15:01:45 +0000 (23:01 +0800)]
f2fs: fix to do sanity check with block address in main area v2
This patch adds f2fs_is_valid_blkaddr() in below functions to do sanity
check with block address to avoid pentential panic:
- f2fs_grab_read_bio()
- __written_first_block()
https://bugzilla.kernel.org/show_bug.cgi?id=200465
- Reproduce
- POC (poc.c)
#define _GNU_SOURCE
#include <sys/types.h>
#include <sys/mount.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/xattr.h>
#include <dirent.h>
#include <errno.h>
#include <error.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <linux/falloc.h>
#include <linux/loop.h>
static void activity(char *mpoint) {
char *xattr;
int err;
err = asprintf(&xattr, "%s/foo/bar/xattr", mpoint);
char buf2[113];
memset(buf2, 0, sizeof(buf2));
listxattr(xattr, buf2, sizeof(buf2));
}
int main(int argc, char *argv[]) {
activity(argv[1]);
return 0;
}
- kernel message
[ 844.718738] F2FS-fs (loop0): Mounted with checkpoint version = 2
[ 846.430929] F2FS-fs (loop0): access invalid blkaddr:1024
[ 846.431058] WARNING: CPU: 1 PID: 1249 at fs/f2fs/checkpoint.c:154 f2fs_is_valid_blkaddr+0x10f/0x160
[ 846.431059] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd input_leds joydev soundcore serio_raw i2c_piix4 mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 raid10 raid456 libcrc32c async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 raid0 multipath linear qxl ttm crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops pcbc drm 8139too aesni_intel 8139cp floppy psmouse mii aes_x86_64 crypto_simd pata_acpi cryptd glue_helper
[ 846.431310] CPU: 1 PID: 1249 Comm: a.out Not tainted 4.18.0-rc3+ #1
[ 846.431312] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 846.431315] RIP: 0010:f2fs_is_valid_blkaddr+0x10f/0x160
[ 846.431316] Code: 00 eb ed 31 c0 83 fa 05 75 ae 48 83 ec 08 48 8b 3f 89 f1 48 c7 c2 fc 0b 0f 8b 48 c7 c6 8b d7 09 8b 88 44 24 07 e8 61 8b ff ff <0f> 0b 0f b6 44 24 07 48 83 c4 08 eb 81 4c 8b 47 10 8b 8f 38 04 00
[ 846.431347] RSP: 0018:
ffff961c414a7bc0 EFLAGS:
00010282
[ 846.431349] RAX:
0000000000000000 RBX:
ffffc5f787b8ea80 RCX:
0000000000000000
[ 846.431350] RDX:
0000000000000000 RSI:
ffff89dfffd165d8 RDI:
ffff89dfffd165d8
[ 846.431351] RBP:
ffff961c414a7c20 R08:
0000000000000001 R09:
0000000000000248
[ 846.431353] R10:
0000000000000000 R11:
0000000000000248 R12:
0000000000000007
[ 846.431369] R13:
ffff89dff5492800 R14:
ffff89dfae3aa000 R15:
ffff89dff4ff88d0
[ 846.431372] FS:
00007f882e2fb700(0000) GS:
ffff89dfffd00000(0000) knlGS:
0000000000000000
[ 846.431373] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 846.431374] CR2:
0000000001a88008 CR3:
00000001eb572000 CR4:
00000000000006e0
[ 846.431384] Call Trace:
[ 846.431426] f2fs_iget+0x6f4/0xe70
[ 846.431430] ? f2fs_find_entry+0x71/0x90
[ 846.431432] f2fs_lookup+0x1aa/0x390
[ 846.431452] __lookup_slow+0x97/0x150
[ 846.431459] lookup_slow+0x35/0x50
[ 846.431462] walk_component+0x1c6/0x470
[ 846.431479] ? memcg_kmem_charge_memcg+0x70/0x90
[ 846.431488] ? page_add_file_rmap+0x13/0x200
[ 846.431491] path_lookupat+0x76/0x230
[ 846.431501] ? __alloc_pages_nodemask+0xfc/0x280
[ 846.431504] filename_lookup+0xb8/0x1a0
[ 846.431534] ? _cond_resched+0x16/0x40
[ 846.431541] ? kmem_cache_alloc+0x160/0x1d0
[ 846.431549] ? path_listxattr+0x41/0xa0
[ 846.431551] path_listxattr+0x41/0xa0
[ 846.431570] do_syscall_64+0x55/0x100
[ 846.431583] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 846.431607] RIP: 0033:0x7f882de1c0d7
[ 846.431607] Code: f0 ff ff 73 01 c3 48 8b 0d be dd 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 c2 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 dd 2b 00 f7 d8 64 89 01 48
[ 846.431639] RSP: 002b:
00007ffe8e66c238 EFLAGS:
00000202 ORIG_RAX:
00000000000000c2
[ 846.431641] RAX:
ffffffffffffffda RBX:
0000000000000000 RCX:
00007f882de1c0d7
[ 846.431642] RDX:
0000000000000071 RSI:
00007ffe8e66c280 RDI:
0000000001a880c0
[ 846.431643] RBP:
00007ffe8e66c300 R08:
0000000001a88010 R09:
0000000000000000
[ 846.431645] R10:
00000000000001ab R11:
0000000000000202 R12:
0000000000400550
[ 846.431646] R13:
00007ffe8e66c400 R14:
0000000000000000 R15:
0000000000000000
[ 846.431648] ---[ end trace
abca54df39d14f5c ]---
[ 846.431651] F2FS-fs (loop0): invalid blkaddr: 1024, type: 5, run fsck to fix.
[ 846.431762] WARNING: CPU: 1 PID: 1249 at fs/f2fs/f2fs.h:2697 f2fs_iget+0xd17/0xe70
[ 846.431763] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd input_leds joydev soundcore serio_raw i2c_piix4 mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 raid10 raid456 libcrc32c async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 raid0 multipath linear qxl ttm crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops pcbc drm 8139too aesni_intel 8139cp floppy psmouse mii aes_x86_64 crypto_simd pata_acpi cryptd glue_helper
[ 846.431797] CPU: 1 PID: 1249 Comm: a.out Tainted: G W 4.18.0-rc3+ #1
[ 846.431798] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 846.431800] RIP: 0010:f2fs_iget+0xd17/0xe70
[ 846.431801] Code: ff ff 48 63 d8 e9 e1 f6 ff ff 48 8b 45 c8 41 b8 05 00 00 00 48 c7 c2 d8 e8 0e 8b 48 c7 c6 1d b0 0a 8b 48 8b 38 e8 f9 b4 00 00 <0f> 0b 48 8b 45 c8 f0 80 48 48 04 e9 d8 f9 ff ff 0f 0b 48 8b 43 18
[ 846.431832] RSP: 0018:
ffff961c414a7bd0 EFLAGS:
00010282
[ 846.431834] RAX:
0000000000000000 RBX:
ffffc5f787b8ea80 RCX:
0000000000000006
[ 846.431835] RDX:
0000000000000000 RSI:
0000000000000096 RDI:
ffff89dfffd165d0
[ 846.431836] RBP:
ffff961c414a7c20 R08:
0000000000000000 R09:
0000000000000273
[ 846.431837] R10:
0000000000000000 R11:
ffff89dfad50ca60 R12:
0000000000000007
[ 846.431838] R13:
ffff89dff5492800 R14:
ffff89dfae3aa000 R15:
ffff89dff4ff88d0
[ 846.431840] FS:
00007f882e2fb700(0000) GS:
ffff89dfffd00000(0000) knlGS:
0000000000000000
[ 846.431841] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 846.431842] CR2:
0000000001a88008 CR3:
00000001eb572000 CR4:
00000000000006e0
[ 846.431846] Call Trace:
[ 846.431850] ? f2fs_find_entry+0x71/0x90
[ 846.431853] f2fs_lookup+0x1aa/0x390
[ 846.431856] __lookup_slow+0x97/0x150
[ 846.431858] lookup_slow+0x35/0x50
[ 846.431874] walk_component+0x1c6/0x470
[ 846.431878] ? memcg_kmem_charge_memcg+0x70/0x90
[ 846.431880] ? page_add_file_rmap+0x13/0x200
[ 846.431882] path_lookupat+0x76/0x230
[ 846.431884] ? __alloc_pages_nodemask+0xfc/0x280
[ 846.431886] filename_lookup+0xb8/0x1a0
[ 846.431890] ? _cond_resched+0x16/0x40
[ 846.431891] ? kmem_cache_alloc+0x160/0x1d0
[ 846.431894] ? path_listxattr+0x41/0xa0
[ 846.431896] path_listxattr+0x41/0xa0
[ 846.431898] do_syscall_64+0x55/0x100
[ 846.431901] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 846.431902] RIP: 0033:0x7f882de1c0d7
[ 846.431903] Code: f0 ff ff 73 01 c3 48 8b 0d be dd 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 c2 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 dd 2b 00 f7 d8 64 89 01 48
[ 846.431934] RSP: 002b:
00007ffe8e66c238 EFLAGS:
00000202 ORIG_RAX:
00000000000000c2
[ 846.431936] RAX:
ffffffffffffffda RBX:
0000000000000000 RCX:
00007f882de1c0d7
[ 846.431937] RDX:
0000000000000071 RSI:
00007ffe8e66c280 RDI:
0000000001a880c0
[ 846.431939] RBP:
00007ffe8e66c300 R08:
0000000001a88010 R09:
0000000000000000
[ 846.431940] R10:
00000000000001ab R11:
0000000000000202 R12:
0000000000400550
[ 846.431941] R13:
00007ffe8e66c400 R14:
0000000000000000 R15:
0000000000000000
[ 846.431943] ---[ end trace
abca54df39d14f5d ]---
[ 846.432033] F2FS-fs (loop0): access invalid blkaddr:1024
[ 846.432051] WARNING: CPU: 1 PID: 1249 at fs/f2fs/checkpoint.c:154 f2fs_is_valid_blkaddr+0x10f/0x160
[ 846.432051] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd input_leds joydev soundcore serio_raw i2c_piix4 mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 raid10 raid456 libcrc32c async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 raid0 multipath linear qxl ttm crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops pcbc drm 8139too aesni_intel 8139cp floppy psmouse mii aes_x86_64 crypto_simd pata_acpi cryptd glue_helper
[ 846.432085] CPU: 1 PID: 1249 Comm: a.out Tainted: G W 4.18.0-rc3+ #1
[ 846.432086] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 846.432089] RIP: 0010:f2fs_is_valid_blkaddr+0x10f/0x160
[ 846.432089] Code: 00 eb ed 31 c0 83 fa 05 75 ae 48 83 ec 08 48 8b 3f 89 f1 48 c7 c2 fc 0b 0f 8b 48 c7 c6 8b d7 09 8b 88 44 24 07 e8 61 8b ff ff <0f> 0b 0f b6 44 24 07 48 83 c4 08 eb 81 4c 8b 47 10 8b 8f 38 04 00
[ 846.432120] RSP: 0018:
ffff961c414a7900 EFLAGS:
00010286
[ 846.432122] RAX:
0000000000000000 RBX:
0000000000000400 RCX:
0000000000000006
[ 846.432123] RDX:
0000000000000000 RSI:
0000000000000096 RDI:
ffff89dfffd165d0
[ 846.432124] RBP:
ffff89dff5492800 R08:
0000000000000001 R09:
000000000000029d
[ 846.432125] R10:
ffff961c414a7820 R11:
000000000000029d R12:
0000000000000400
[ 846.432126] R13:
0000000000000000 R14:
ffff89dff4ff88d0 R15:
0000000000000000
[ 846.432128] FS:
00007f882e2fb700(0000) GS:
ffff89dfffd00000(0000) knlGS:
0000000000000000
[ 846.432130] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 846.432131] CR2:
0000000001a88008 CR3:
00000001eb572000 CR4:
00000000000006e0
[ 846.432135] Call Trace:
[ 846.432151] f2fs_wait_on_block_writeback+0x20/0x110
[ 846.432158] f2fs_grab_read_bio+0xbc/0xe0
[ 846.432161] f2fs_submit_page_read+0x21/0x280
[ 846.432163] f2fs_get_read_data_page+0xb7/0x3c0
[ 846.432165] f2fs_get_lock_data_page+0x29/0x1e0
[ 846.432167] f2fs_get_new_data_page+0x148/0x550
[ 846.432170] f2fs_add_regular_entry+0x1d2/0x550
[ 846.432178] ? __switch_to+0x12f/0x460
[ 846.432181] f2fs_add_dentry+0x6a/0xd0
[ 846.432184] f2fs_do_add_link+0xe9/0x140
[ 846.432186] __recover_dot_dentries+0x260/0x280
[ 846.432189] f2fs_lookup+0x343/0x390
[ 846.432193] __lookup_slow+0x97/0x150
[ 846.432195] lookup_slow+0x35/0x50
[ 846.432208] walk_component+0x1c6/0x470
[ 846.432212] ? memcg_kmem_charge_memcg+0x70/0x90
[ 846.432215] ? page_add_file_rmap+0x13/0x200
[ 846.432217] path_lookupat+0x76/0x230
[ 846.432219] ? __alloc_pages_nodemask+0xfc/0x280
[ 846.432221] filename_lookup+0xb8/0x1a0
[ 846.432224] ? _cond_resched+0x16/0x40
[ 846.432226] ? kmem_cache_alloc+0x160/0x1d0
[ 846.432228] ? path_listxattr+0x41/0xa0
[ 846.432230] path_listxattr+0x41/0xa0
[ 846.432233] do_syscall_64+0x55/0x100
[ 846.432235] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 846.432237] RIP: 0033:0x7f882de1c0d7
[ 846.432237] Code: f0 ff ff 73 01 c3 48 8b 0d be dd 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 c2 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 dd 2b 00 f7 d8 64 89 01 48
[ 846.432269] RSP: 002b:
00007ffe8e66c238 EFLAGS:
00000202 ORIG_RAX:
00000000000000c2
[ 846.432271] RAX:
ffffffffffffffda RBX:
0000000000000000 RCX:
00007f882de1c0d7
[ 846.432272] RDX:
0000000000000071 RSI:
00007ffe8e66c280 RDI:
0000000001a880c0
[ 846.432273] RBP:
00007ffe8e66c300 R08:
0000000001a88010 R09:
0000000000000000
[ 846.432274] R10:
00000000000001ab R11:
0000000000000202 R12:
0000000000400550
[ 846.432275] R13:
00007ffe8e66c400 R14:
0000000000000000 R15:
0000000000000000
[ 846.432277] ---[ end trace
abca54df39d14f5e ]---
[ 846.432279] F2FS-fs (loop0): invalid blkaddr: 1024, type: 5, run fsck to fix.
[ 846.432376] WARNING: CPU: 1 PID: 1249 at fs/f2fs/f2fs.h:2697 f2fs_wait_on_block_writeback+0xb1/0x110
[ 846.432376] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd input_leds joydev soundcore serio_raw i2c_piix4 mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 raid10 raid456 libcrc32c async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 raid0 multipath linear qxl ttm crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops pcbc drm 8139too aesni_intel 8139cp floppy psmouse mii aes_x86_64 crypto_simd pata_acpi cryptd glue_helper
[ 846.432410] CPU: 1 PID: 1249 Comm: a.out Tainted: G W 4.18.0-rc3+ #1
[ 846.432411] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 846.432413] RIP: 0010:f2fs_wait_on_block_writeback+0xb1/0x110
[ 846.432414] Code: 66 90 f0 ff 4b 34 74 59 5b 5d c3 48 8b 7d 00 41 b8 05 00 00 00 89 d9 48 c7 c2 d8 e8 0e 8b 48 c7 c6 1d b0 0a 8b e8 df bc fd ff <0f> 0b f0 80 4d 48 04 e9 67 ff ff ff 48 8b 03 48 c1 e8 37 83 e0 07
[ 846.432445] RSP: 0018:
ffff961c414a7910 EFLAGS:
00010286
[ 846.432447] RAX:
0000000000000000 RBX:
0000000000000400 RCX:
0000000000000006
[ 846.432448] RDX:
0000000000000000 RSI:
0000000000000092 RDI:
ffff89dfffd165d0
[ 846.432449] RBP:
ffff89dff5492800 R08:
0000000000000000 R09:
00000000000002d1
[ 846.432450] R10:
ffff961c414a7820 R11:
ffff89dfad50cf80 R12:
0000000000000400
[ 846.432451] R13:
0000000000000000 R14:
ffff89dff4ff88d0 R15:
0000000000000000
[ 846.432453] FS:
00007f882e2fb700(0000) GS:
ffff89dfffd00000(0000) knlGS:
0000000000000000
[ 846.432454] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 846.432455] CR2:
0000000001a88008 CR3:
00000001eb572000 CR4:
00000000000006e0
[ 846.432459] Call Trace:
[ 846.432463] f2fs_grab_read_bio+0xbc/0xe0
[ 846.432464] f2fs_submit_page_read+0x21/0x280
[ 846.432466] f2fs_get_read_data_page+0xb7/0x3c0
[ 846.432468] f2fs_get_lock_data_page+0x29/0x1e0
[ 846.432470] f2fs_get_new_data_page+0x148/0x550
[ 846.432473] f2fs_add_regular_entry+0x1d2/0x550
[ 846.432475] ? __switch_to+0x12f/0x460
[ 846.432477] f2fs_add_dentry+0x6a/0xd0
[ 846.432480] f2fs_do_add_link+0xe9/0x140
[ 846.432483] __recover_dot_dentries+0x260/0x280
[ 846.432485] f2fs_lookup+0x343/0x390
[ 846.432488] __lookup_slow+0x97/0x150
[ 846.432490] lookup_slow+0x35/0x50
[ 846.432505] walk_component+0x1c6/0x470
[ 846.432509] ? memcg_kmem_charge_memcg+0x70/0x90
[ 846.432511] ? page_add_file_rmap+0x13/0x200
[ 846.432513] path_lookupat+0x76/0x230
[ 846.432515] ? __alloc_pages_nodemask+0xfc/0x280
[ 846.432517] filename_lookup+0xb8/0x1a0
[ 846.432520] ? _cond_resched+0x16/0x40
[ 846.432522] ? kmem_cache_alloc+0x160/0x1d0
[ 846.432525] ? path_listxattr+0x41/0xa0
[ 846.432526] path_listxattr+0x41/0xa0
[ 846.432529] do_syscall_64+0x55/0x100
[ 846.432531] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 846.432533] RIP: 0033:0x7f882de1c0d7
[ 846.432533] Code: f0 ff ff 73 01 c3 48 8b 0d be dd 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 c2 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 dd 2b 00 f7 d8 64 89 01 48
[ 846.432565] RSP: 002b:
00007ffe8e66c238 EFLAGS:
00000202 ORIG_RAX:
00000000000000c2
[ 846.432567] RAX:
ffffffffffffffda RBX:
0000000000000000 RCX:
00007f882de1c0d7
[ 846.432568] RDX:
0000000000000071 RSI:
00007ffe8e66c280 RDI:
0000000001a880c0
[ 846.432569] RBP:
00007ffe8e66c300 R08:
0000000001a88010 R09:
0000000000000000
[ 846.432570] R10:
00000000000001ab R11:
0000000000000202 R12:
0000000000400550
[ 846.432571] R13:
00007ffe8e66c400 R14:
0000000000000000 R15:
0000000000000000
[ 846.432573] ---[ end trace
abca54df39d14f5f ]---
[ 846.434280] BUG: unable to handle kernel NULL pointer dereference at
0000000000000008
[ 846.434424] PGD
80000001ebd3a067 P4D
80000001ebd3a067 PUD
1eb1ae067 PMD 0
[ 846.434551] Oops: 0000 [#1] SMP PTI
[ 846.434697] CPU: 0 PID: 44 Comm: kworker/u5:0 Tainted: G W 4.18.0-rc3+ #1
[ 846.434805] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 846.435000] Workqueue: fscrypt_read_queue decrypt_work
[ 846.435174] RIP: 0010:fscrypt_do_page_crypto+0x6e/0x2d0
[ 846.435351] Code: 00 65 48 8b 04 25 28 00 00 00 48 89 84 24 88 00 00 00 31 c0 e8 43 c2 e0 ff 49 8b 86 48 02 00 00 85 ed c7 44 24 70 00 00 00 00 <48> 8b 58 08 0f 84 14 02 00 00 48 8b 78 10 48 8b 0c 24 48 c7 84 24
[ 846.435696] RSP: 0018:
ffff961c40f9bd60 EFLAGS:
00010206
[ 846.435870] RAX:
0000000000000000 RBX:
ffffc5f787719b80 RCX:
ffffc5f787719b80
[ 846.436051] RDX:
ffffffff8b9f4b88 RSI:
ffffffff8b0ae622 RDI:
ffff961c40f9bdb8
[ 846.436261] RBP:
0000000000001000 R08:
ffffc5f787719b80 R09:
0000000000001000
[ 846.436433] R10:
0000000000000018 R11:
fefefefefefefeff R12:
ffffc5f787719b80
[ 846.436562] R13:
ffffc5f787719b80 R14:
ffff89dff4ff88d0 R15:
0ffff89dfaddee60
[ 846.436658] FS:
0000000000000000(0000) GS:
ffff89dfffc00000(0000) knlGS:
0000000000000000
[ 846.436758] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 846.436898] CR2:
0000000000000008 CR3:
00000001eddd0000 CR4:
00000000000006f0
[ 846.437001] Call Trace:
[ 846.437181] ? check_preempt_wakeup+0xf2/0x230
[ 846.437276] ? check_preempt_curr+0x7c/0x90
[ 846.437370] fscrypt_decrypt_page+0x48/0x4d
[ 846.437466] __fscrypt_decrypt_bio+0x5b/0x90
[ 846.437542] decrypt_work+0x12/0x20
[ 846.437651] process_one_work+0x15e/0x3d0
[ 846.437740] worker_thread+0x4c/0x440
[ 846.437848] kthread+0xf8/0x130
[ 846.437938] ? rescuer_thread+0x350/0x350
[ 846.438022] ? kthread_associate_blkcg+0x90/0x90
[ 846.438117] ret_from_fork+0x35/0x40
[ 846.438201] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd input_leds joydev soundcore serio_raw i2c_piix4 mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 raid10 raid456 libcrc32c async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 raid0 multipath linear qxl ttm crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops pcbc drm 8139too aesni_intel 8139cp floppy psmouse mii aes_x86_64 crypto_simd pata_acpi cryptd glue_helper
[ 846.438653] CR2:
0000000000000008
[ 846.438713] ---[ end trace
abca54df39d14f60 ]---
[ 846.438796] RIP: 0010:fscrypt_do_page_crypto+0x6e/0x2d0
[ 846.438844] Code: 00 65 48 8b 04 25 28 00 00 00 48 89 84 24 88 00 00 00 31 c0 e8 43 c2 e0 ff 49 8b 86 48 02 00 00 85 ed c7 44 24 70 00 00 00 00 <48> 8b 58 08 0f 84 14 02 00 00 48 8b 78 10 48 8b 0c 24 48 c7 84 24
[ 846.439084] RSP: 0018:
ffff961c40f9bd60 EFLAGS:
00010206
[ 846.439176] RAX:
0000000000000000 RBX:
ffffc5f787719b80 RCX:
ffffc5f787719b80
[ 846.440927] RDX:
ffffffff8b9f4b88 RSI:
ffffffff8b0ae622 RDI:
ffff961c40f9bdb8
[ 846.442083] RBP:
0000000000001000 R08:
ffffc5f787719b80 R09:
0000000000001000
[ 846.443284] R10:
0000000000000018 R11:
fefefefefefefeff R12:
ffffc5f787719b80
[ 846.444448] R13:
ffffc5f787719b80 R14:
ffff89dff4ff88d0 R15:
0ffff89dfaddee60
[ 846.445558] FS:
0000000000000000(0000) GS:
ffff89dfffc00000(0000) knlGS:
0000000000000000
[ 846.446687] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 846.447796] CR2:
0000000000000008 CR3:
00000001eddd0000 CR4:
00000000000006f0
- Location
https://elixir.bootlin.com/linux/v4.18-rc4/source/fs/crypto/crypto.c#L149
struct crypto_skcipher *tfm = ci->ci_ctfm;
Here ci can be NULL
Note that this issue maybe require CONFIG_F2FS_FS_ENCRYPTION=y to reproduce.
Reported-by Wen Xu <wen.xu@gatech.edu>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Thu, 28 Jun 2018 16:19:25 +0000 (00:19 +0800)]
f2fs: fix to do sanity check with inline flags
https://bugzilla.kernel.org/show_bug.cgi?id=200221
- Overview
BUG() in clear_inode() when mounting and un-mounting a corrupted f2fs image
- Reproduce
- Kernel message
[ 538.601448] F2FS-fs (loop0): Invalid segment/section count (31, 24 x 1376257)
[ 538.601458] F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
[ 538.724091] F2FS-fs (loop0): Try to recover 2th superblock, ret: 0
[ 538.724102] F2FS-fs (loop0): Mounted with checkpoint version = 2
[ 540.970834] ------------[ cut here ]------------
[ 540.970838] kernel BUG at fs/inode.c:512!
[ 540.971750] invalid opcode: 0000 [#1] SMP KASAN PTI
[ 540.972755] CPU: 1 PID: 1305 Comm: umount Not tainted 4.18.0-rc1+ #4
[ 540.974034] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 540.982913] RIP: 0010:clear_inode+0xc0/0xd0
[ 540.983774] Code: 8d a3 30 01 00 00 4c 89 e7 e8 1c ec f8 ff 48 8b 83 30 01 00 00 49 39 c4 75 1a 48 c7 83 a0 00 00 00 60 00 00 00 5b 41 5c 5d c3 <0f> 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 1f 40 00 66 66 66 66 90 55
[ 540.987570] RSP: 0018:
ffff8801e34a7b70 EFLAGS:
00010002
[ 540.988636] RAX:
0000000000000000 RBX:
ffff8801e9b744e8 RCX:
ffffffffb840eb3a
[ 540.990063] RDX:
dffffc0000000000 RSI:
0000000000000004 RDI:
ffff8801e9b746b8
[ 540.991499] RBP:
ffff8801e34a7b80 R08:
ffffed003d36e8ce R09:
ffffed003d36e8ce
[ 540.992923] R10:
0000000000000001 R11:
ffffed003d36e8cd R12:
ffff8801e9b74668
[ 540.994360] R13:
ffff8801e9b74760 R14:
ffff8801e9b74528 R15:
ffff8801e9b74530
[ 540.995786] FS:
00007f4662bdf840(0000) GS:
ffff8801f6f00000(0000) knlGS:
0000000000000000
[ 540.997403] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 540.998571] CR2:
000000000175c568 CR3:
00000001dcfe6000 CR4:
00000000000006e0
[ 541.000015] Call Trace:
[ 541.000554] f2fs_evict_inode+0x253/0x630
[ 541.001381] evict+0x16f/0x290
[ 541.002015] iput+0x280/0x300
[ 541.002654] dentry_unlink_inode+0x165/0x1e0
[ 541.003528] __dentry_kill+0x16a/0x260
[ 541.004300] dentry_kill+0x70/0x250
[ 541.005018] dput+0x154/0x1d0
[ 541.005635] do_one_tree+0x34/0x40
[ 541.006354] shrink_dcache_for_umount+0x3f/0xa0
[ 541.007285] generic_shutdown_super+0x43/0x1c0
[ 541.008192] kill_block_super+0x52/0x80
[ 541.008978] kill_f2fs_super+0x62/0x70
[ 541.009750] deactivate_locked_super+0x6f/0xa0
[ 541.010664] deactivate_super+0x5e/0x80
[ 541.011450] cleanup_mnt+0x61/0xa0
[ 541.012151] __cleanup_mnt+0x12/0x20
[ 541.012893] task_work_run+0xc8/0xf0
[ 541.013635] exit_to_usermode_loop+0x125/0x130
[ 541.014555] do_syscall_64+0x138/0x170
[ 541.015340] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 541.016375] RIP: 0033:0x7f46624bf487
[ 541.017104] Code: 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 c9 2b 00 f7 d8 64 89 01 48
[ 541.020923] RSP: 002b:
00007fff5e12e9a8 EFLAGS:
00000246 ORIG_RAX:
00000000000000a6
[ 541.022452] RAX:
0000000000000000 RBX:
0000000001753030 RCX:
00007f46624bf487
[ 541.023885] RDX:
0000000000000001 RSI:
0000000000000000 RDI:
000000000175a1e0
[ 541.025318] RBP:
000000000175a1e0 R08:
0000000000000000 R09:
0000000000000014
[ 541.026755] R10:
00000000000006b2 R11:
0000000000000246 R12:
00007f46629c883c
[ 541.028186] R13:
0000000000000000 R14:
0000000001753210 R15:
00007fff5e12ec30
[ 541.029626] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd mac_hid i2c_piix4 soundcore ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid0 multipath linear 8139too crct10dif_pclmul crc32_pclmul qxl drm_kms_helper syscopyarea aesni_intel sysfillrect sysimgblt fb_sys_fops ttm drm aes_x86_64 crypto_simd cryptd 8139cp glue_helper mii pata_acpi floppy
[ 541.039445] ---[ end trace
4ce02f25ff7d3df5 ]---
[ 541.040392] RIP: 0010:clear_inode+0xc0/0xd0
[ 541.041240] Code: 8d a3 30 01 00 00 4c 89 e7 e8 1c ec f8 ff 48 8b 83 30 01 00 00 49 39 c4 75 1a 48 c7 83 a0 00 00 00 60 00 00 00 5b 41 5c 5d c3 <0f> 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 1f 40 00 66 66 66 66 90 55
[ 541.045042] RSP: 0018:
ffff8801e34a7b70 EFLAGS:
00010002
[ 541.046099] RAX:
0000000000000000 RBX:
ffff8801e9b744e8 RCX:
ffffffffb840eb3a
[ 541.047537] RDX:
dffffc0000000000 RSI:
0000000000000004 RDI:
ffff8801e9b746b8
[ 541.048965] RBP:
ffff8801e34a7b80 R08:
ffffed003d36e8ce R09:
ffffed003d36e8ce
[ 541.050402] R10:
0000000000000001 R11:
ffffed003d36e8cd R12:
ffff8801e9b74668
[ 541.051832] R13:
ffff8801e9b74760 R14:
ffff8801e9b74528 R15:
ffff8801e9b74530
[ 541.053263] FS:
00007f4662bdf840(0000) GS:
ffff8801f6f00000(0000) knlGS:
0000000000000000
[ 541.054891] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 541.056039] CR2:
000000000175c568 CR3:
00000001dcfe6000 CR4:
00000000000006e0
[ 541.058506] ==================================================================
[ 541.059991] BUG: KASAN: stack-out-of-bounds in update_stack_state+0x38c/0x3e0
[ 541.061513] Read of size 8 at addr
ffff8801e34a7970 by task umount/1305
[ 541.063302] CPU: 1 PID: 1305 Comm: umount Tainted: G D 4.18.0-rc1+ #4
[ 541.064838] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 541.066778] Call Trace:
[ 541.067294] dump_stack+0x7b/0xb5
[ 541.067986] print_address_description+0x70/0x290
[ 541.068941] kasan_report+0x291/0x390
[ 541.069692] ? update_stack_state+0x38c/0x3e0
[ 541.070598] __asan_load8+0x54/0x90
[ 541.071315] update_stack_state+0x38c/0x3e0
[ 541.072172] ? __read_once_size_nocheck.constprop.7+0x20/0x20
[ 541.073340] ? vprintk_func+0x27/0x60
[ 541.074096] ? printk+0xa3/0xd3
[ 541.074762] ? __save_stack_trace+0x5e/0x100
[ 541.075634] unwind_next_frame.part.5+0x18e/0x490
[ 541.076594] ? unwind_dump+0x290/0x290
[ 541.077368] ? __show_regs+0x2c4/0x330
[ 541.078142] __unwind_start+0x106/0x190
[ 541.085422] __save_stack_trace+0x5e/0x100
[ 541.086268] ? __save_stack_trace+0x5e/0x100
[ 541.087161] ? unlink_anon_vmas+0xba/0x2c0
[ 541.087997] save_stack_trace+0x1f/0x30
[ 541.088782] save_stack+0x46/0xd0
[ 541.089475] ? __alloc_pages_slowpath+0x1420/0x1420
[ 541.090477] ? flush_tlb_mm_range+0x15e/0x220
[ 541.091364] ? __dec_node_state+0x24/0xb0
[ 541.092180] ? lock_page_memcg+0x85/0xf0
[ 541.092979] ? unlock_page_memcg+0x16/0x80
[ 541.093812] ? page_remove_rmap+0x198/0x520
[ 541.094674] ? mark_page_accessed+0x133/0x200
[ 541.095559] ? _cond_resched+0x1a/0x50
[ 541.096326] ? unmap_page_range+0xcd4/0xe50
[ 541.097179] ? rb_next+0x58/0x80
[ 541.097845] ? rb_next+0x58/0x80
[ 541.098518] __kasan_slab_free+0x13c/0x1a0
[ 541.099352] ? unlink_anon_vmas+0xba/0x2c0
[ 541.100184] kasan_slab_free+0xe/0x10
[ 541.100934] kmem_cache_free+0x89/0x1e0
[ 541.101724] unlink_anon_vmas+0xba/0x2c0
[ 541.102534] free_pgtables+0x101/0x1b0
[ 541.103299] exit_mmap+0x146/0x2a0
[ 541.103996] ? __ia32_sys_munmap+0x50/0x50
[ 541.104829] ? kasan_check_read+0x11/0x20
[ 541.105649] ? mm_update_next_owner+0x322/0x380
[ 541.106578] mmput+0x8b/0x1d0
[ 541.107191] do_exit+0x43a/0x1390
[ 541.107876] ? mm_update_next_owner+0x380/0x380
[ 541.108791] ? deactivate_super+0x5e/0x80
[ 541.109610] ? cleanup_mnt+0x61/0xa0
[ 541.110351] ? __cleanup_mnt+0x12/0x20
[ 541.111115] ? task_work_run+0xc8/0xf0
[ 541.111879] ? exit_to_usermode_loop+0x125/0x130
[ 541.112817] rewind_stack_do_exit+0x17/0x20
[ 541.113666] RIP: 0033:0x7f46624bf487
[ 541.114404] Code: Bad RIP value.
[ 541.115094] RSP: 002b:
00007fff5e12e9a8 EFLAGS:
00000246 ORIG_RAX:
00000000000000a6
[ 541.116605] RAX:
0000000000000000 RBX:
0000000001753030 RCX:
00007f46624bf487
[ 541.118034] RDX:
0000000000000001 RSI:
0000000000000000 RDI:
000000000175a1e0
[ 541.119472] RBP:
000000000175a1e0 R08:
0000000000000000 R09:
0000000000000014
[ 541.120890] R10:
00000000000006b2 R11:
0000000000000246 R12:
00007f46629c883c
[ 541.122321] R13:
0000000000000000 R14:
0000000001753210 R15:
00007fff5e12ec30
[ 541.124061] The buggy address belongs to the page:
[ 541.125042] page:
ffffea00078d29c0 count:0 mapcount:0 mapping:
0000000000000000 index:0x0
[ 541.126651] flags: 0x2ffff0000000000()
[ 541.127418] raw:
02ffff0000000000 dead000000000100 dead000000000200 0000000000000000
[ 541.128963] raw:
0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 541.130516] page dumped because: kasan: bad access detected
[ 541.131954] Memory state around the buggy address:
[ 541.132924]
ffff8801e34a7800: 00 f1 f1 f1 f1 00 f4 f4 f4 f3 f3 f3 f3 00 00 00
[ 541.134378]
ffff8801e34a7880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 541.135814] >
ffff8801e34a7900: 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1
[ 541.137253] ^
[ 541.138637]
ffff8801e34a7980: f1 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 541.140075]
ffff8801e34a7a00: 00 00 00 00 00 00 00 00 f3 00 00 00 00 00 00 00
[ 541.141509] ==================================================================
- Location
https://elixir.bootlin.com/linux/v4.18-rc1/source/fs/inode.c#L512
BUG_ON(inode->i_data.nrpages);
The root cause is root directory inode is corrupted, it has both
inline_data and inline_dentry flag, and its nlink is zero, so in
->evict(), after dropping all page cache, it grabs page #0 for inline
data truncation, result in panic in later clear_inode() where we will
check inode->i_data.nrpages value.
This patch adds inline flags check in sanity_check_inode, in addition,
do sanity check with root inode's nlink.
Reported-by Wen Xu <wen.xu@gatech.edu>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Sat, 28 Jul 2018 10:37:58 +0000 (18:37 +0800)]
f2fs: fix to reset i_gc_failures correctly
Let's reset i_gc_failures to zero when we unset pinned state for file.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Thu, 2 Aug 2018 14:59:12 +0000 (22:59 +0800)]
f2fs: fix invalid memory access
syzbot found the following crash on:
HEAD commit:
d9bd94c0bcaa Add linux-next specific files for
20180801
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=
1001189c400000
kernel config: https://syzkaller.appspot.com/x/.config?x=
cc8964ea4d04518c
link: https://syzkaller.appspot.com/bug?extid=c966a82db0b14aa37e81
compiler: gcc (GCC) 8.0.1
20180413 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+c966a82db0b14aa37e81@syzkaller.appspotmail.com
loop7: rw=12288, want=8200, limit=20
netlink: 65342 bytes leftover after parsing attributes in process `syz-executor4'.
openvswitch: netlink: Message has 8 unknown bytes.
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
CPU: 1 PID: 7615 Comm: syz-executor7 Not tainted 4.18.0-rc7-next-
20180801+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__read_once_size include/linux/compiler.h:188 [inline]
RIP: 0010:compound_head include/linux/page-flags.h:142 [inline]
RIP: 0010:PageLocked include/linux/page-flags.h:272 [inline]
RIP: 0010:f2fs_put_page fs/f2fs/f2fs.h:2011 [inline]
RIP: 0010:validate_checkpoint+0x66d/0xec0 fs/f2fs/checkpoint.c:835
Code: e8 58 05 7f fe 4c 8d 6b 80 4d 8d 74 24 08 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 c6 04 02 00 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 f4 06 00 00 4c 89 ea 4d 8b 7c 24 08 48 b8 00 00
RSP: 0018:
ffff8801937cebe8 EFLAGS:
00010246
RAX:
dffffc0000000000 RBX:
ffff8801937cef30 RCX:
ffffc90006035000
RDX:
0000000000000000 RSI:
ffffffff82fd9658 RDI:
0000000000000005
RBP:
ffff8801937cef58 R08:
ffff8801ab254700 R09:
fffff94000d9e026
R10:
fffff94000d9e026 R11:
ffffea0006cf0137 R12:
fffffffffffffffb
R13:
ffff8801937ceeb0 R14:
0000000000000003 R15:
ffff880193419b40
FS:
00007f36a61d5700(0000) GS:
ffff8801db100000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
00007fc04ff93000 CR3:
00000001d0562000 CR4:
00000000001426e0
DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
Call Trace:
f2fs_get_valid_checkpoint+0x436/0x1ec0 fs/f2fs/checkpoint.c:860
f2fs_fill_super+0x2d42/0x8110 fs/f2fs/super.c:2883
mount_bdev+0x314/0x3e0 fs/super.c:1344
f2fs_mount+0x3c/0x50 fs/f2fs/super.c:3133
legacy_get_tree+0x131/0x460 fs/fs_context.c:729
vfs_get_tree+0x1cb/0x5c0 fs/super.c:1743
do_new_mount fs/namespace.c:2603 [inline]
do_mount+0x6f2/0x1e20 fs/namespace.c:2927
ksys_mount+0x12d/0x140 fs/namespace.c:3143
__do_sys_mount fs/namespace.c:3157 [inline]
__se_sys_mount fs/namespace.c:3154 [inline]
__x64_sys_mount+0xbe/0x150 fs/namespace.c:3154
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45943a
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 bd 8a fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 9a 8a fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:
00007f36a61d4a88 EFLAGS:
00000206 ORIG_RAX:
00000000000000a5
RAX:
ffffffffffffffda RBX:
00007f36a61d4b30 RCX:
000000000045943a
RDX:
00007f36a61d4ad0 RSI:
0000000020000100 RDI:
00007f36a61d4af0
RBP:
0000000020000100 R08:
00007f36a61d4b30 R09:
00007f36a61d4ad0
R10:
0000000000000000 R11:
0000000000000206 R12:
0000000000000013
R13:
0000000000000000 R14:
00000000004c8ea0 R15:
0000000000000000
Modules linked in:
Dumping ftrace buffer:
(ftrace buffer empty)
---[ end trace
bd8550c129352286 ]---
RIP: 0010:__read_once_size include/linux/compiler.h:188 [inline]
RIP: 0010:compound_head include/linux/page-flags.h:142 [inline]
RIP: 0010:PageLocked include/linux/page-flags.h:272 [inline]
RIP: 0010:f2fs_put_page fs/f2fs/f2fs.h:2011 [inline]
RIP: 0010:validate_checkpoint+0x66d/0xec0 fs/f2fs/checkpoint.c:835
Code: e8 58 05 7f fe 4c 8d 6b 80 4d 8d 74 24 08 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 c6 04 02 00 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 f4 06 00 00 4c 89 ea 4d 8b 7c 24 08 48 b8 00 00
RSP: 0018:
ffff8801937cebe8 EFLAGS:
00010246
RAX:
dffffc0000000000 RBX:
ffff8801937cef30 RCX:
ffffc90006035000
RDX:
0000000000000000 RSI:
ffffffff82fd9658 RDI:
0000000000000005
netlink: 65342 bytes leftover after parsing attributes in process `syz-executor4'.
RBP:
ffff8801937cef58 R08:
ffff8801ab254700 R09:
fffff94000d9e026
openvswitch: netlink: Message has 8 unknown bytes.
R10:
fffff94000d9e026 R11:
ffffea0006cf0137 R12:
fffffffffffffffb
R13:
ffff8801937ceeb0 R14:
0000000000000003 R15:
ffff880193419b40
FS:
00007f36a61d5700(0000) GS:
ffff8801db100000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
00007fc04ff93000 CR3:
00000001d0562000 CR4:
00000000001426e0
DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
In validate_checkpoint(), if we failed to call get_checkpoint_version(), we
will pass returned invalid page pointer into f2fs_put_page, cause accessing
invalid memory, this patch tries to handle error path correctly to fix this
issue.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Thu, 2 Aug 2018 15:03:19 +0000 (23:03 +0800)]
f2fs: fix to avoid broken of dnode block list
f2fs recovery flow is relying on dnode block link list, it means fsynced
file recovery depends on previous dnode's persistence in the list, so
during fsync() we should wait on all regular inode's dnode writebacked
before issuing flush.
By this way, we can avoid dnode block list being broken by out-of-order
IO submission due to IO scheduler or driver.
Sheng Yong helps to do the test with this patch:
Target:/data (f2fs, -)
64MB / 32768KB / 4KB / 8
1 / PERSIST / Index
Base:
SEQ-RD(MB/s) SEQ-WR(MB/s) RND-RD(IOPS) RND-WR(IOPS) Insert(TPS) Update(TPS) Delete(TPS)
1 867.82 204.15 41440.03 41370.54 680.8 1025.94 1031.08
2 871.87 205.87 41370.3 40275.2 791.14 1065.84 1101.7
3 866.52 205.69 41795.67 40596.16 694.69 1037.16 1031.48
Avg 868.7366667 205.2366667 41535.33333 40747.3 722.21 1042.98 1054.753333
After:
SEQ-RD(MB/s) SEQ-WR(MB/s) RND-RD(IOPS) RND-WR(IOPS) Insert(TPS) Update(TPS) Delete(TPS)
1 798.81 202.5 41143 40613.87 602.71 838.08 913.83
2 805.79 206.47 40297.2 41291.46 604.44 840.75 924.27
3 814.83 206.17 41209.57 40453.62 602.85 834.66 927.91
Avg 806.4766667 205.0466667 40883.25667 40786.31667 603.3333333 837.83 922.0033333
Patched/Original:
0.
928332713 0.
999074239 0.
984300676 1.
000957528 0.
835398753 0.
803303994 0.
874141189
It looks like atomic write will suffer performance regression.
I suspect that the criminal is that we forcing to wait all dnode being in
storage cache before we issue PREFLUSH+FUA.
BTW, will commit ("f2fs: don't need to wait for node writes for atomic write")
cause the problem: we will lose data of last transaction after SPO, even if
atomic write return no error:
- atomic_open();
- write() P1, P2, P3;
- atomic_commit();
- writeback data: P1, P2, P3;
- writeback node: N1, N2, N3; <--- If N1, N2 is not writebacked, N3 with fsync_mark is
writebacked, In SPOR, we won't find N3 since node chain is broken, turns out that losing
last transaction.
- preflush + fua;
- power-cut
If we don't wait dnode writeback for atomic_write:
SEQ-RD(MB/s) SEQ-WR(MB/s) RND-RD(IOPS) RND-WR(IOPS) Insert(TPS) Update(TPS) Delete(TPS)
1 779.91 206.03 41621.5 40333.16 716.9 1038.21 1034.85
2 848.51 204.35 40082.44 39486.17 791.83 1119.96 1083.77
3 772.12 206.27 41335.25 41599.65 723.29 1055.07 971.92
Avg 800.18 205.55 41013.06333 40472.99333 744.0066667 1071.08 1030.18
Patched/Original:
0.
92108464 1.
001526693 0.
987425886 0.
993268102 1.
030180511 1.
026942031 0.
976702294
SQLite's performance recovers.
Jaegeuk:
"Practically, I don't see db corruption becase of this. We can excuse to lose
the last transaction."
Finally, we decide to keep original implementation of atomic write interface
sematics that we don't wait all dnode writeback before preflush+fua submission.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Gustavo A. R. Silva [Thu, 2 Aug 2018 00:51:38 +0000 (19:51 -0500)]
f2fs: use true and false for boolean values
Return statements in functions returning bool should use true or false
instead of an integer value.
This issue was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Wed, 1 Aug 2018 11:16:11 +0000 (19:16 +0800)]
f2fs: fix to do sanity check with cp_pack_start_sum
After fuzzing, cp_pack_start_sum could be corrupted, so current log's
summary info should be wrong due to loading incorrect summary block.
Then, if segment's type in current log is exceeded NR_CURSEG_TYPE, it
can lead accessing invalid dirty_i->dirty_segmap bitmap finally.
Add sanity check for cp_pack_start_sum to fix this issue.
https://bugzilla.kernel.org/show_bug.cgi?id=200419
- Reproduce
- Kernel message (f2fs-dev w/ KASAN)
[ 3117.578432] F2FS-fs (loop0): Invalid log blocks per segment (8)
[ 3117.578445] F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
[ 3117.581364] F2FS-fs (loop0): invalid crc_offset: 30716
[ 3117.583564] WARNING: CPU: 1 PID: 1225 at fs/f2fs/checkpoint.c:90 __get_meta_page+0x448/0x4b0
[ 3117.583570] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer joydev input_leds serio_raw snd soundcore mac_hid i2c_piix4 ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi btrfs zstd_decompress zstd_compress xxhash raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear 8139too qxl ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel psmouse aes_x86_64 8139cp crypto_simd cryptd mii glue_helper pata_acpi floppy
[ 3117.584014] CPU: 1 PID: 1225 Comm: mount Not tainted 4.17.0+ #1
[ 3117.584017] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 3117.584022] RIP: 0010:__get_meta_page+0x448/0x4b0
[ 3117.584023] Code: 00 49 8d bc 24 84 00 00 00 e8 74 54 da ff 41 83 8c 24 84 00 00 00 08 4c 89 f6 4c 89 ef e8 c0 d9 95 00 48 89 ef e8 18 e3 00 00 <0f> 0b f0 80 4d 48 04 e9 0f fe ff ff 0f 0b 48 89 c7 48 89 04 24 e8
[ 3117.584072] RSP: 0018:
ffff88018eb678c0 EFLAGS:
00010286
[ 3117.584082] RAX:
ffff88018f0a6a78 RBX:
ffffea0007a46600 RCX:
ffffffff9314d1b2
[ 3117.584085] RDX:
ffffffff00000001 RSI:
0000000000000000 RDI:
ffff88018f0a6a98
[ 3117.584087] RBP:
ffff88018ebe9980 R08:
0000000000000002 R09:
0000000000000001
[ 3117.584090] R10:
0000000000000001 R11:
ffffed00326e4450 R12:
ffff880193722200
[ 3117.584092] R13:
ffff88018ebe9afc R14:
0000000000000206 R15:
ffff88018eb67900
[ 3117.584096] FS:
00007f5694636840(0000) GS:
ffff8801f3b00000(0000) knlGS:
0000000000000000
[ 3117.584098] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 3117.584101] CR2:
00000000016f21b8 CR3:
0000000191c22000 CR4:
00000000000006e0
[ 3117.584112] Call Trace:
[ 3117.584121] ? f2fs_set_meta_page_dirty+0x150/0x150
[ 3117.584127] ? f2fs_build_segment_manager+0xbf9/0x3190
[ 3117.584133] ? f2fs_npages_for_summary_flush+0x75/0x120
[ 3117.584145] f2fs_build_segment_manager+0xda8/0x3190
[ 3117.584151] ? f2fs_get_valid_checkpoint+0x298/0xa00
[ 3117.584156] ? f2fs_flush_sit_entries+0x10e0/0x10e0
[ 3117.584184] ? map_id_range_down+0x17c/0x1b0
[ 3117.584188] ? __put_user_ns+0x30/0x30
[ 3117.584206] ? find_next_bit+0x53/0x90
[ 3117.584237] ? cpumask_next+0x16/0x20
[ 3117.584249] f2fs_fill_super+0x1948/0x2b40
[ 3117.584258] ? f2fs_commit_super+0x1a0/0x1a0
[ 3117.584279] ? sget_userns+0x65e/0x690
[ 3117.584296] ? set_blocksize+0x88/0x130
[ 3117.584302] ? f2fs_commit_super+0x1a0/0x1a0
[ 3117.584305] mount_bdev+0x1c0/0x200
[ 3117.584310] mount_fs+0x5c/0x190
[ 3117.584320] vfs_kern_mount+0x64/0x190
[ 3117.584330] do_mount+0x2e4/0x1450
[ 3117.584343] ? lockref_put_return+0x130/0x130
[ 3117.584347] ? copy_mount_string+0x20/0x20
[ 3117.584357] ? kasan_unpoison_shadow+0x31/0x40
[ 3117.584362] ? kasan_kmalloc+0xa6/0xd0
[ 3117.584373] ? memcg_kmem_put_cache+0x16/0x90
[ 3117.584377] ? __kmalloc_track_caller+0x196/0x210
[ 3117.584383] ? _copy_from_user+0x61/0x90
[ 3117.584396] ? memdup_user+0x3e/0x60
[ 3117.584401] ksys_mount+0x7e/0xd0
[ 3117.584405] __x64_sys_mount+0x62/0x70
[ 3117.584427] do_syscall_64+0x73/0x160
[ 3117.584440] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 3117.584455] RIP: 0033:0x7f5693f14b9a
[ 3117.584456] Code: 48 8b 0d 01 c3 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d ce c2 2b 00 f7 d8 64 89 01 48
[ 3117.584505] RSP: 002b:
00007fff27346488 EFLAGS:
00000206 ORIG_RAX:
00000000000000a5
[ 3117.584510] RAX:
ffffffffffffffda RBX:
00000000016e2030 RCX:
00007f5693f14b9a
[ 3117.584512] RDX:
00000000016e2210 RSI:
00000000016e3f30 RDI:
00000000016ee040
[ 3117.584514] RBP:
0000000000000000 R08:
0000000000000000 R09:
0000000000000013
[ 3117.584516] R10:
00000000c0ed0000 R11:
0000000000000206 R12:
00000000016ee040
[ 3117.584519] R13:
00000000016e2210 R14:
0000000000000000 R15:
0000000000000003
[ 3117.584523] ---[ end trace
a8e0d899985faf31 ]---
[ 3117.685663] F2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=2, run fsck to fix.
[ 3117.685673] F2FS-fs (loop0): recover_data: ino = 2 (i_size: recover) recovered = 1, err = 0
[ 3117.685707] ==================================================================
[ 3117.685955] BUG: KASAN: slab-out-of-bounds in __remove_dirty_segment+0xdd/0x1e0
[ 3117.686175] Read of size 8 at addr
ffff88018f0a63d0 by task mount/1225
[ 3117.686477] CPU: 0 PID: 1225 Comm: mount Tainted: G W 4.17.0+ #1
[ 3117.686481] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 3117.686483] Call Trace:
[ 3117.686494] dump_stack+0x71/0xab
[ 3117.686512] print_address_description+0x6b/0x290
[ 3117.686517] kasan_report+0x28e/0x390
[ 3117.686522] ? __remove_dirty_segment+0xdd/0x1e0
[ 3117.686527] __remove_dirty_segment+0xdd/0x1e0
[ 3117.686532] locate_dirty_segment+0x189/0x190
[ 3117.686538] f2fs_allocate_new_segments+0xa9/0xe0
[ 3117.686543] recover_data+0x703/0x2c20
[ 3117.686547] ? f2fs_recover_fsync_data+0x48f/0xd50
[ 3117.686553] ? ksys_mount+0x7e/0xd0
[ 3117.686564] ? policy_nodemask+0x1a/0x90
[ 3117.686567] ? policy_node+0x56/0x70
[ 3117.686571] ? add_fsync_inode+0xf0/0xf0
[ 3117.686592] ? blk_finish_plug+0x44/0x60
[ 3117.686597] ? f2fs_ra_meta_pages+0x38b/0x5e0
[ 3117.686602] ? find_inode_fast+0xac/0xc0
[ 3117.686606] ? f2fs_is_valid_blkaddr+0x320/0x320
[ 3117.686618] ? __radix_tree_lookup+0x150/0x150
[ 3117.686633] ? dqget+0x670/0x670
[ 3117.686648] ? pagecache_get_page+0x29/0x410
[ 3117.686656] ? kmem_cache_alloc+0x176/0x1e0
[ 3117.686660] ? f2fs_is_valid_blkaddr+0x11d/0x320
[ 3117.686664] f2fs_recover_fsync_data+0xc23/0xd50
[ 3117.686670] ? f2fs_space_for_roll_forward+0x60/0x60
[ 3117.686674] ? rb_insert_color+0x323/0x3d0
[ 3117.686678] ? f2fs_recover_orphan_inodes+0xa5/0x700
[ 3117.686683] ? proc_register+0x153/0x1d0
[ 3117.686686] ? f2fs_remove_orphan_inode+0x10/0x10
[ 3117.686695] ? f2fs_attr_store+0x50/0x50
[ 3117.686700] ? proc_create_single_data+0x52/0x60
[ 3117.686707] f2fs_fill_super+0x1d06/0x2b40
[ 3117.686728] ? f2fs_commit_super+0x1a0/0x1a0
[ 3117.686735] ? sget_userns+0x65e/0x690
[ 3117.686740] ? set_blocksize+0x88/0x130
[ 3117.686745] ? f2fs_commit_super+0x1a0/0x1a0
[ 3117.686748] mount_bdev+0x1c0/0x200
[ 3117.686753] mount_fs+0x5c/0x190
[ 3117.686758] vfs_kern_mount+0x64/0x190
[ 3117.686762] do_mount+0x2e4/0x1450
[ 3117.686769] ? lockref_put_return+0x130/0x130
[ 3117.686773] ? copy_mount_string+0x20/0x20
[ 3117.686777] ? kasan_unpoison_shadow+0x31/0x40
[ 3117.686780] ? kasan_kmalloc+0xa6/0xd0
[ 3117.686786] ? memcg_kmem_put_cache+0x16/0x90
[ 3117.686790] ? __kmalloc_track_caller+0x196/0x210
[ 3117.686795] ? _copy_from_user+0x61/0x90
[ 3117.686801] ? memdup_user+0x3e/0x60
[ 3117.686804] ksys_mount+0x7e/0xd0
[ 3117.686809] __x64_sys_mount+0x62/0x70
[ 3117.686816] do_syscall_64+0x73/0x160
[ 3117.686824] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 3117.686829] RIP: 0033:0x7f5693f14b9a
[ 3117.686830] Code: 48 8b 0d 01 c3 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d ce c2 2b 00 f7 d8 64 89 01 48
[ 3117.686887] RSP: 002b:
00007fff27346488 EFLAGS:
00000206 ORIG_RAX:
00000000000000a5
[ 3117.686892] RAX:
ffffffffffffffda RBX:
00000000016e2030 RCX:
00007f5693f14b9a
[ 3117.686894] RDX:
00000000016e2210 RSI:
00000000016e3f30 RDI:
00000000016ee040
[ 3117.686896] RBP:
0000000000000000 R08:
0000000000000000 R09:
0000000000000013
[ 3117.686899] R10:
00000000c0ed0000 R11:
0000000000000206 R12:
00000000016ee040
[ 3117.686901] R13:
00000000016e2210 R14:
0000000000000000 R15:
0000000000000003
[ 3117.687005] Allocated by task 1225:
[ 3117.687152] kasan_kmalloc+0xa6/0xd0
[ 3117.687157] kmem_cache_alloc_trace+0xfd/0x200
[ 3117.687161] f2fs_build_segment_manager+0x2d09/0x3190
[ 3117.687165] f2fs_fill_super+0x1948/0x2b40
[ 3117.687168] mount_bdev+0x1c0/0x200
[ 3117.687171] mount_fs+0x5c/0x190
[ 3117.687174] vfs_kern_mount+0x64/0x190
[ 3117.687177] do_mount+0x2e4/0x1450
[ 3117.687180] ksys_mount+0x7e/0xd0
[ 3117.687182] __x64_sys_mount+0x62/0x70
[ 3117.687186] do_syscall_64+0x73/0x160
[ 3117.687190] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 3117.687285] Freed by task 19:
[ 3117.687412] __kasan_slab_free+0x137/0x190
[ 3117.687416] kfree+0x8b/0x1b0
[ 3117.687460] ttm_bo_man_put_node+0x61/0x80 [ttm]
[ 3117.687476] ttm_bo_cleanup_refs+0x15f/0x250 [ttm]
[ 3117.687492] ttm_bo_delayed_delete+0x2f0/0x300 [ttm]
[ 3117.687507] ttm_bo_delayed_workqueue+0x17/0x50 [ttm]
[ 3117.687528] process_one_work+0x2f9/0x740
[ 3117.687531] worker_thread+0x78/0x6b0
[ 3117.687541] kthread+0x177/0x1c0
[ 3117.687545] ret_from_fork+0x35/0x40
[ 3117.687638] The buggy address belongs to the object at
ffff88018f0a6300
which belongs to the cache kmalloc-192 of size 192
[ 3117.688014] The buggy address is located 16 bytes to the right of
192-byte region [
ffff88018f0a6300,
ffff88018f0a63c0)
[ 3117.688382] The buggy address belongs to the page:
[ 3117.688554] page:
ffffea00063c2980 count:1 mapcount:0 mapping:
ffff8801f3403180 index:0x0
[ 3117.688788] flags: 0x17fff8000000100(slab)
[ 3117.688944] raw:
017fff8000000100 ffffea00063c2840 0000000e0000000e ffff8801f3403180
[ 3117.689166] raw:
0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 3117.689386] page dumped because: kasan: bad access detected
[ 3117.689653] Memory state around the buggy address:
[ 3117.689816]
ffff88018f0a6280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[ 3117.690027]
ffff88018f0a6300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 3117.690239] >
ffff88018f0a6380: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 3117.690448] ^
[ 3117.690644]
ffff88018f0a6400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 3117.690868]
ffff88018f0a6480: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 3117.691077] ==================================================================
[ 3117.691290] Disabling lock debugging due to kernel taint
[ 3117.693893] BUG: unable to handle kernel NULL pointer dereference at
0000000000000000
[ 3117.694120] PGD
80000001f01bc067 P4D
80000001f01bc067 PUD
1d9638067 PMD 0
[ 3117.694338] Oops: 0002 [#1] SMP KASAN PTI
[ 3117.694490] CPU: 1 PID: 1225 Comm: mount Tainted: G B W 4.17.0+ #1
[ 3117.694703] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 3117.695073] RIP: 0010:__remove_dirty_segment+0xe2/0x1e0
[ 3117.695246] Code: c4 48 89 c7 e8 cf bb d7 ff 45 0f b6 24 24 41 83 e4 3f 44 88 64 24 07 41 83 e4 3f 4a 8d 7c e3 08 e8 b3 bc d7 ff 4a 8b 4c e3 08 <f0> 4c 0f b3 29 0f 82 94 00 00 00 48 8d bd 20 04 00 00 e8 97 bb d7
[ 3117.695793] RSP: 0018:
ffff88018eb67638 EFLAGS:
00010292
[ 3117.695969] RAX:
0000000000000000 RBX:
ffff88018f0a6300 RCX:
0000000000000000
[ 3117.696182] RDX:
0000000000000000 RSI:
0000000000000297 RDI:
0000000000000297
[ 3117.696391] RBP:
ffff88018ebe9980 R08:
ffffed003e743ebb R09:
ffffed003e743ebb
[ 3117.696604] R10:
0000000000000001 R11:
ffffed003e743eba R12:
0000000000000019
[ 3117.696813] R13:
0000000000000014 R14:
0000000000000320 R15:
ffff88018ebe99e0
[ 3117.697032] FS:
00007f5694636840(0000) GS:
ffff8801f3b00000(0000) knlGS:
0000000000000000
[ 3117.697280] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 3117.702357] CR2:
00007fe89bb1a000 CR3:
0000000191c22000 CR4:
00000000000006e0
[ 3117.707235] Call Trace:
[ 3117.712077] locate_dirty_segment+0x189/0x190
[ 3117.716891] f2fs_allocate_new_segments+0xa9/0xe0
[ 3117.721617] recover_data+0x703/0x2c20
[ 3117.726316] ? f2fs_recover_fsync_data+0x48f/0xd50
[ 3117.730957] ? ksys_mount+0x7e/0xd0
[ 3117.735573] ? policy_nodemask+0x1a/0x90
[ 3117.740198] ? policy_node+0x56/0x70
[ 3117.744829] ? add_fsync_inode+0xf0/0xf0
[ 3117.749487] ? blk_finish_plug+0x44/0x60
[ 3117.754152] ? f2fs_ra_meta_pages+0x38b/0x5e0
[ 3117.758831] ? find_inode_fast+0xac/0xc0
[ 3117.763448] ? f2fs_is_valid_blkaddr+0x320/0x320
[ 3117.768046] ? __radix_tree_lookup+0x150/0x150
[ 3117.772603] ? dqget+0x670/0x670
[ 3117.777159] ? pagecache_get_page+0x29/0x410
[ 3117.781648] ? kmem_cache_alloc+0x176/0x1e0
[ 3117.786067] ? f2fs_is_valid_blkaddr+0x11d/0x320
[ 3117.790476] f2fs_recover_fsync_data+0xc23/0xd50
[ 3117.794790] ? f2fs_space_for_roll_forward+0x60/0x60
[ 3117.799086] ? rb_insert_color+0x323/0x3d0
[ 3117.803304] ? f2fs_recover_orphan_inodes+0xa5/0x700
[ 3117.807563] ? proc_register+0x153/0x1d0
[ 3117.811766] ? f2fs_remove_orphan_inode+0x10/0x10
[ 3117.815947] ? f2fs_attr_store+0x50/0x50
[ 3117.820087] ? proc_create_single_data+0x52/0x60
[ 3117.824262] f2fs_fill_super+0x1d06/0x2b40
[ 3117.828367] ? f2fs_commit_super+0x1a0/0x1a0
[ 3117.832432] ? sget_userns+0x65e/0x690
[ 3117.836500] ? set_blocksize+0x88/0x130
[ 3117.840501] ? f2fs_commit_super+0x1a0/0x1a0
[ 3117.844420] mount_bdev+0x1c0/0x200
[ 3117.848275] mount_fs+0x5c/0x190
[ 3117.852053] vfs_kern_mount+0x64/0x190
[ 3117.855810] do_mount+0x2e4/0x1450
[ 3117.859441] ? lockref_put_return+0x130/0x130
[ 3117.862996] ? copy_mount_string+0x20/0x20
[ 3117.866417] ? kasan_unpoison_shadow+0x31/0x40
[ 3117.869719] ? kasan_kmalloc+0xa6/0xd0
[ 3117.872948] ? memcg_kmem_put_cache+0x16/0x90
[ 3117.876121] ? __kmalloc_track_caller+0x196/0x210
[ 3117.879333] ? _copy_from_user+0x61/0x90
[ 3117.882467] ? memdup_user+0x3e/0x60
[ 3117.885604] ksys_mount+0x7e/0xd0
[ 3117.888700] __x64_sys_mount+0x62/0x70
[ 3117.891742] do_syscall_64+0x73/0x160
[ 3117.894692] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 3117.897669] RIP: 0033:0x7f5693f14b9a
[ 3117.900563] Code: 48 8b 0d 01 c3 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d ce c2 2b 00 f7 d8 64 89 01 48
[ 3117.906922] RSP: 002b:
00007fff27346488 EFLAGS:
00000206 ORIG_RAX:
00000000000000a5
[ 3117.910159] RAX:
ffffffffffffffda RBX:
00000000016e2030 RCX:
00007f5693f14b9a
[ 3117.913469] RDX:
00000000016e2210 RSI:
00000000016e3f30 RDI:
00000000016ee040
[ 3117.916764] RBP:
0000000000000000 R08:
0000000000000000 R09:
0000000000000013
[ 3117.920071] R10:
00000000c0ed0000 R11:
0000000000000206 R12:
00000000016ee040
[ 3117.923393] R13:
00000000016e2210 R14:
0000000000000000 R15:
0000000000000003
[ 3117.926680] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer joydev input_leds serio_raw snd soundcore mac_hid i2c_piix4 ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi btrfs zstd_decompress zstd_compress xxhash raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear 8139too qxl ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel psmouse aes_x86_64 8139cp crypto_simd cryptd mii glue_helper pata_acpi floppy
[ 3117.949979] CR2:
0000000000000000
[ 3117.954283] ---[ end trace
a8e0d899985faf32 ]---
[ 3117.958575] RIP: 0010:__remove_dirty_segment+0xe2/0x1e0
[ 3117.962810] Code: c4 48 89 c7 e8 cf bb d7 ff 45 0f b6 24 24 41 83 e4 3f 44 88 64 24 07 41 83 e4 3f 4a 8d 7c e3 08 e8 b3 bc d7 ff 4a 8b 4c e3 08 <f0> 4c 0f b3 29 0f 82 94 00 00 00 48 8d bd 20 04 00 00 e8 97 bb d7
[ 3117.971789] RSP: 0018:
ffff88018eb67638 EFLAGS:
00010292
[ 3117.976333] RAX:
0000000000000000 RBX:
ffff88018f0a6300 RCX:
0000000000000000
[ 3117.980926] RDX:
0000000000000000 RSI:
0000000000000297 RDI:
0000000000000297
[ 3117.985497] RBP:
ffff88018ebe9980 R08:
ffffed003e743ebb R09:
ffffed003e743ebb
[ 3117.990098] R10:
0000000000000001 R11:
ffffed003e743eba R12:
0000000000000019
[ 3117.994761] R13:
0000000000000014 R14:
0000000000000320 R15:
ffff88018ebe99e0
[ 3117.999392] FS:
00007f5694636840(0000) GS:
ffff8801f3b00000(0000) knlGS:
0000000000000000
[ 3118.004096] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 3118.008816] CR2:
00007fe89bb1a000 CR3:
0000000191c22000 CR4:
00000000000006e0
- Location
https://elixir.bootlin.com/linux/v4.18-rc3/source/fs/f2fs/segment.c#L775
if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t]))
dirty_i->nr_dirty[t]--;
Here dirty_i->dirty_segmap[t] can be NULL which leads to crash in test_and_clear_bit()
Reported-by Wen Xu <wen.xu@gatech.edu>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Jaegeuk Kim [Tue, 31 Jul 2018 16:09:01 +0000 (09:09 -0700)]
f2fs: avoid f2fs_bug_on() in cp_error case
There is a subtle race condition to invoke f2fs_bug_on() in shutdown tests. I've
confirmed that the last checkpoint is preserved in consistent state, so it'd be
fine to just return error at this moment.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Sun, 29 Jul 2018 04:16:59 +0000 (12:16 +0800)]
f2fs: fix to clear PG_checked flag in set_page_dirty()
PG_checked flag will be set on data page during GC, later, we can
recognize such page by the flag and migrate page to cold segment.
But previously, we don't clear this flag when invalidating data page,
after page redirtying, we will write it into wrong log.
Let's clear PG_checked flag in set_page_dirty() to avoid this.
Signed-off-by: Weichao Guo <guoweichao@huawei.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Fri, 27 Jul 2018 10:15:14 +0000 (18:15 +0800)]
f2fs: fix to active page in lru list for read path
If config CONFIG_F2FS_FAULT_INJECTION is on, for both read or write path
we will call find_lock_page() to get the page, but for read path, it
missed to passing FGP_ACCESSED to allocator to active the page in LRU
list, result in being reclaimed in advance incorrectly, fix it.
Reported-by: Xianrong Zhou <zhouxianrong@huawei.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Fri, 27 Jul 2018 10:15:13 +0000 (18:15 +0800)]
f2fs: don't keep meta pages used for block migration
For migration of encrypted inode's block, we load data of encrypted block
into meta inode's page cache, after checkpoint, those all intermediate
pages should be clean, and no one will read them again, so let's just
release them for more memory.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Wed, 25 Jul 2018 23:19:48 +0000 (07:19 +0800)]
f2fs: fix to restrict mount condition when without CONFIG_QUOTA
Like quota_ino feature, we need to reject mounting RDWR with image
which enables project_quota feature when there is no CONFIG_QUOTA
be set in kernel.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Sheng Yong [Tue, 24 Jul 2018 12:17:52 +0000 (20:17 +0800)]
f2fs: quota: do not mount as RDWR without QUOTA if quota feature enabled
If quota feature is enabled, quota is on by default. However, if
CONFIG_QUOTA is not built in kernel, dquot entries will not get updated,
which leads to quota inconsistency.
Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Sheng Yong [Thu, 26 Jul 2018 11:24:25 +0000 (19:24 +0800)]
f2fs: quota: fix incorrect comments
Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Sheng Yong [Tue, 24 Jul 2018 12:17:53 +0000 (20:17 +0800)]
f2fs: quota: decrease the lock granularity of statfs_project
According to fs/quota/dquot.c, `dq_data_lock' protects mem_dqinfo
structures and modifications of dquot pointers in the inode, and
`dquot->dq_dqb_lock' protects data from dq_dqb.
We should use dquot->dq_dqb_lock in statfs_project instead of
dq_dat_lock.
Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Yunlong Song [Mon, 23 Jul 2018 14:10:22 +0000 (22:10 +0800)]
f2fs: add proc entry to show victim_secmap bitmap
This patch adds a new proc entry to show victim_secmap information in
more detail, which is very helpful to know the get_victim candidate
status clearly, and helpful to debug problems (e.g., some sections can
not gc all of its blocks, since some blocks belong to atomic file,
leaving victim_secmap with section bit setting, in extrem case, this
will lead all bytes of victim_secmap setting with 0xff).
Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Wed, 25 Jul 2018 11:16:21 +0000 (19:16 +0800)]
f2fs: let checkpoint flush dnode page of regular
Fsyncer will wait on all dnode pages of regular writeback before flushing,
if there are async dnode pages blocked by IO scheduler, it may decrease
fsync's performance.
In this patch, we choose to let f2fs_balance_fs_bg() to trigger checkpoint
to flush these dnode pages of regular, so async IO of dnode page can be
elimitnated, making fsyncer only need to wait for sync IO.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Yunlong Song [Thu, 19 Jul 2018 12:58:15 +0000 (20:58 +0800)]
f2fs: issue discard align to section in LFS mode
For the case when sbi->segs_per_sec > 1 with lfs mode, take
section:segment = 5 for example, if the section prefree_map is
...previous section | current section (1 1 0 1 1) | next section...,
then the start = x, end = x + 1, after start = start_segno +
sbi->segs_per_sec, start = x + 5, then it will skip x + 3 and x + 4, but
their bitmap is still set, which will cause duplicated
f2fs_issue_discard of this same section in the next write_checkpoint:
round 1: section bitmap : 1 1 1 1 1, all valid, prefree_map: 0 0 0 0 0
then rm data block NO.2, block NO.2 becomes invalid, prefree_map: 0 0 1 0 0
write_checkpoint: section bitmap: 1 1 0 1 1, prefree_map: 0 0 0 0 0,
prefree of NO.2 is cleared, and no discard issued
round 2: rm data block NO.0, NO.1, NO.3, NO.4
all invalid, but prefree bit of NO.2 is set and cleared in round 1, then
prefree_map: 1 1 0 1 1
write_checkpoint: section bitmap: 0 0 0 0 0, prefree_map: 0 0 0 1 1, no
valid blocks of this section, so discard issued, but this time prefree
bit of NO.3 and NO.4 is skipped due to start = start_segno + sbi->segs_per_sec;
round 3:
write_checkpoint: section bitmap: 0 0 0 0 0, prefree_map: 0 0 0 1 1 ->
0 0 0 0 0, no valid blocks of this section, so discard issued,
this time prefree bit of NO.3 and NO.4 is cleared, but the discard of
this section is sent again...
To fix this problem, we can align the start and end value to section
boundary for fstrim and real-time discard operation, and decide to issue
discard only when the whole section is invalid, which can issue discard
aligned to section size as much as possible and avoid redundant discard.
Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Jaegeuk Kim [Fri, 27 Jul 2018 09:15:11 +0000 (18:15 +0900)]
f2fs: don't allow any writes on aborted atomic writes
In order to prevent abusing atomic writes by abnormal users, we've added a
threshold, 20% over memory footprint, which disallows further atomic writes.
Previously, however, SQLite doesn't know the files became normal, so that
it could write stale data and commit on revoked normal database file.
Once f2fs detects such the abnormal behavior, this patch tries to avoid further
writes in write_begin().
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Thu, 19 Jul 2018 15:57:54 +0000 (23:57 +0800)]
f2fs: restrict setting up inode.i_advise
In order to give advise to f2fs to recognize hot/cold file, it is possible
that we can set specific bit in inode.i_advise through setxattr(), but
there are several bits which are used internally, such as encrypt_bit,
keep_size_bit, they should never be changed through setxattr().
So that this patch 1) adds FADVISE_MODIFIABLE_BITS to filter modifiable
bits user given, 2) supports to clear {hot,cold}_file bits.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Yunlei He [Thu, 19 Jul 2018 06:57:14 +0000 (14:57 +0800)]
f2fs: fix wrong kernel message when recover fsync data on ro fs
This patch fix wrong message info for recover fsync data
on readonly fs.
Signed-off-by: Yunlei He <heyunlei@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Tue, 17 Jul 2018 12:41:49 +0000 (20:41 +0800)]
f2fs: clean up ioctl interface naming
Romve redundant prefix 'f2fs_' in the middle of f2fs_ioc_f2fs_write_checkpoint().
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Tue, 17 Jul 2018 12:41:48 +0000 (20:41 +0800)]
f2fs: clean up with f2fs_is_{atomic,volatile}_file()
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Tue, 17 Jul 2018 12:41:47 +0000 (20:41 +0800)]
f2fs: clean up with f2fs_encrypted_inode()
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Tue, 17 Jul 2018 12:41:46 +0000 (20:41 +0800)]
f2fs: clean up with get_current_nat_page
Just cleanup, no logic change.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Tue, 17 Jul 2018 12:41:45 +0000 (20:41 +0800)]
f2fs: kill EXT_TREE_VEC_SIZE
Since commit
201ef5e080c9 ("f2fs: improve shrink performance of extent nodes"),
there is no user of EXT_TREE_VEC_SIZE, just kill it for cleanup.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Hyunchul Lee [Thu, 19 Jul 2018 00:23:57 +0000 (09:23 +0900)]
f2fs: avoid duplicated permission check for "trusted." xattrs
Because xattr_permission already checks CAP_SYS_ADMIN
capability, we don't need to check it.
Signed-off-by: Hyunchul Lee <cheol.lee@lge.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Mon, 16 Jul 2018 16:02:17 +0000 (00:02 +0800)]
f2fs: fix to propagate error from __get_meta_page()
If caller of __get_meta_page() can handle error, let's propagate error
from __get_meta_page().
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Sun, 8 Jul 2018 14:16:55 +0000 (22:16 +0800)]
f2fs: fix to do sanity check with i_extra_isize
If inode.i_extra_isize was fuzzed to an abnormal value, when
calculating inline data size, the result will overflow, result
in accessing invalid memory area when operating inline data.
Let's do sanity check with i_extra_isize during inode loading
for fixing.
https://bugzilla.kernel.org/show_bug.cgi?id=200421
- Reproduce
- POC (poc.c)
#define _GNU_SOURCE
#include <sys/types.h>
#include <sys/mount.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/xattr.h>
#include <dirent.h>
#include <errno.h>
#include <error.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <linux/falloc.h>
#include <linux/loop.h>
static void activity(char *mpoint) {
char *foo_bar_baz;
char *foo_baz;
char *xattr;
int err;
err = asprintf(&foo_bar_baz, "%s/foo/bar/baz", mpoint);
err = asprintf(&foo_baz, "%s/foo/baz", mpoint);
err = asprintf(&xattr, "%s/foo/bar/xattr", mpoint);
rename(foo_bar_baz, foo_baz);
char buf2[113];
memset(buf2, 0, sizeof(buf2));
listxattr(xattr, buf2, sizeof(buf2));
removexattr(xattr, "user.mime_type");
}
int main(int argc, char *argv[]) {
activity(argv[1]);
return 0;
}
- Kernel message
Umount the image will leave the following message
[ 2910.995489] F2FS-fs (loop0): Mounted with checkpoint version = 2
[ 2918.416465] ==================================================================
[ 2918.416807] BUG: KASAN: slab-out-of-bounds in f2fs_iget+0xcb9/0x1a80
[ 2918.417009] Read of size 4 at addr
ffff88018efc2068 by task a.out/1229
[ 2918.417311] CPU: 1 PID: 1229 Comm: a.out Not tainted 4.17.0+ #1
[ 2918.417314] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 2918.417323] Call Trace:
[ 2918.417366] dump_stack+0x71/0xab
[ 2918.417401] print_address_description+0x6b/0x290
[ 2918.417407] kasan_report+0x28e/0x390
[ 2918.417411] ? f2fs_iget+0xcb9/0x1a80
[ 2918.417415] f2fs_iget+0xcb9/0x1a80
[ 2918.417422] ? f2fs_lookup+0x2e7/0x580
[ 2918.417425] f2fs_lookup+0x2e7/0x580
[ 2918.417433] ? __recover_dot_dentries+0x400/0x400
[ 2918.417447] ? legitimize_path.isra.29+0x5a/0xa0
[ 2918.417453] __lookup_slow+0x11c/0x220
[ 2918.417457] ? may_delete+0x2a0/0x2a0
[ 2918.417475] ? deref_stack_reg+0xe0/0xe0
[ 2918.417479] ? __lookup_hash+0xb0/0xb0
[ 2918.417483] lookup_slow+0x3e/0x60
[ 2918.417488] walk_component+0x3ac/0x990
[ 2918.417492] ? generic_permission+0x51/0x1e0
[ 2918.417495] ? inode_permission+0x51/0x1d0
[ 2918.417499] ? pick_link+0x3e0/0x3e0
[ 2918.417502] ? link_path_walk+0x4b1/0x770
[ 2918.417513] ? _raw_spin_lock_irqsave+0x25/0x50
[ 2918.417518] ? walk_component+0x990/0x990
[ 2918.417522] ? path_init+0x2e6/0x580
[ 2918.417526] path_lookupat+0x13f/0x430
[ 2918.417531] ? trailing_symlink+0x3a0/0x3a0
[ 2918.417534] ? do_renameat2+0x270/0x7b0
[ 2918.417538] ? __kasan_slab_free+0x14c/0x190
[ 2918.417541] ? do_renameat2+0x270/0x7b0
[ 2918.417553] ? kmem_cache_free+0x85/0x1e0
[ 2918.417558] ? do_renameat2+0x270/0x7b0
[ 2918.417563] filename_lookup+0x13c/0x280
[ 2918.417567] ? filename_parentat+0x2b0/0x2b0
[ 2918.417572] ? kasan_unpoison_shadow+0x31/0x40
[ 2918.417575] ? kasan_kmalloc+0xa6/0xd0
[ 2918.417593] ? strncpy_from_user+0xaa/0x1c0
[ 2918.417598] ? getname_flags+0x101/0x2b0
[ 2918.417614] ? path_listxattr+0x87/0x110
[ 2918.417619] path_listxattr+0x87/0x110
[ 2918.417623] ? listxattr+0xc0/0xc0
[ 2918.417637] ? mm_fault_error+0x1b0/0x1b0
[ 2918.417654] do_syscall_64+0x73/0x160
[ 2918.417660] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 2918.417676] RIP: 0033:0x7f2f3a3480d7
[ 2918.417677] Code: f0 ff ff 73 01 c3 48 8b 0d be dd 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 c2 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 dd 2b 00 f7 d8 64 89 01 48
[ 2918.417732] RSP: 002b:
00007fff4095b7d8 EFLAGS:
00000206 ORIG_RAX:
00000000000000c2
[ 2918.417744] RAX:
ffffffffffffffda RBX:
0000000000000000 RCX:
00007f2f3a3480d7
[ 2918.417746] RDX:
0000000000000071 RSI:
00007fff4095b810 RDI:
000000000126a0c0
[ 2918.417749] RBP:
00007fff4095b890 R08:
000000000126a010 R09:
0000000000000000
[ 2918.417751] R10:
00000000000001ab R11:
0000000000000206 R12:
00000000004005e0
[ 2918.417753] R13:
00007fff4095b990 R14:
0000000000000000 R15:
0000000000000000
[ 2918.417853] Allocated by task 329:
[ 2918.418002] kasan_kmalloc+0xa6/0xd0
[ 2918.418007] kmem_cache_alloc+0xc8/0x1e0
[ 2918.418023] mempool_init_node+0x194/0x230
[ 2918.418027] mempool_init+0x12/0x20
[ 2918.418042] bioset_init+0x2bd/0x380
[ 2918.418052] blk_alloc_queue_node+0xe9/0x540
[ 2918.418075] dm_create+0x2c0/0x800
[ 2918.418080] dev_create+0xd2/0x530
[ 2918.418083] ctl_ioctl+0x2a3/0x5b0
[ 2918.418087] dm_ctl_ioctl+0xa/0x10
[ 2918.418092] do_vfs_ioctl+0x13e/0x8c0
[ 2918.418095] ksys_ioctl+0x66/0x70
[ 2918.418098] __x64_sys_ioctl+0x3d/0x50
[ 2918.418102] do_syscall_64+0x73/0x160
[ 2918.418106] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 2918.418204] Freed by task 0:
[ 2918.418301] (stack is not available)
[ 2918.418521] The buggy address belongs to the object at
ffff88018efc0000
which belongs to the cache biovec-max of size 8192
[ 2918.418894] The buggy address is located 104 bytes to the right of
8192-byte region [
ffff88018efc0000,
ffff88018efc2000)
[ 2918.419257] The buggy address belongs to the page:
[ 2918.419431] page:
ffffea00063bf000 count:1 mapcount:0 mapping:
ffff8801f2242540 index:0x0 compound_mapcount: 0
[ 2918.419702] flags: 0x17fff8000008100(slab|head)
[ 2918.419879] raw:
017fff8000008100 dead000000000100 dead000000000200 ffff8801f2242540
[ 2918.420101] raw:
0000000000000000 0000000000030003 00000001ffffffff 0000000000000000
[ 2918.420322] page dumped because: kasan: bad access detected
[ 2918.420599] Memory state around the buggy address:
[ 2918.420764]
ffff88018efc1f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 2918.420975]
ffff88018efc1f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 2918.421194] >
ffff88018efc2000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 2918.421406] ^
[ 2918.421627]
ffff88018efc2080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 2918.421838]
ffff88018efc2100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 2918.422046] ==================================================================
[ 2918.422264] Disabling lock debugging due to kernel taint
[ 2923.901641] BUG: unable to handle kernel paging request at
ffff88018f0db000
[ 2923.901884] PGD
22226a067 P4D
22226a067 PUD
222273067 PMD
18e642063 PTE
800000018f0db061
[ 2923.902120] Oops: 0003 [#1] SMP KASAN PTI
[ 2923.902274] CPU: 1 PID: 1231 Comm: umount Tainted: G B 4.17.0+ #1
[ 2923.902490] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 2923.902761] RIP: 0010:__memset+0x24/0x30
[ 2923.902906] Code: 90 90 90 90 90 90 66 66 90 66 90 49 89 f9 48 89 d1 83 e2 07 48 c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 <f3> 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 f3
[ 2923.903446] RSP: 0018:
ffff88018ddf7ae0 EFLAGS:
00010206
[ 2923.903622] RAX:
0000000000000000 RBX:
ffff8801d549d888 RCX:
1ffffffffffdaffb
[ 2923.903833] RDX:
0000000000000000 RSI:
0000000000000000 RDI:
ffff88018f0daffc
[ 2923.904062] RBP:
ffff88018efc206c R08:
1ffff10031df840d R09:
ffff88018efc206c
[ 2923.904273] R10:
ffffffffffffe1ee R11:
ffffed0031df65fa R12:
0000000000000000
[ 2923.904485] R13:
ffff8801d549dc98 R14:
00000000ffffc3db R15:
ffffea00063bec80
[ 2923.904693] FS:
00007fa8b2f8a840(0000) GS:
ffff8801f3b00000(0000) knlGS:
0000000000000000
[ 2923.904937] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 2923.910080] CR2:
ffff88018f0db000 CR3:
000000018f892000 CR4:
00000000000006e0
[ 2923.914930] Call Trace:
[ 2923.919724] f2fs_truncate_inline_inode+0x114/0x170
[ 2923.924487] f2fs_truncate_blocks+0x11b/0x7c0
[ 2923.929178] ? f2fs_truncate_data_blocks+0x10/0x10
[ 2923.933834] ? dqget+0x670/0x670
[ 2923.938437] ? f2fs_destroy_extent_tree+0xd6/0x270
[ 2923.943107] ? __radix_tree_lookup+0x2f/0x150
[ 2923.947772] f2fs_truncate+0xd4/0x1a0
[ 2923.952491] f2fs_evict_inode+0x5ab/0x610
[ 2923.957204] evict+0x15f/0x280
[ 2923.961898] __dentry_kill+0x161/0x250
[ 2923.966634] shrink_dentry_list+0xf3/0x250
[ 2923.971897] shrink_dcache_parent+0xa9/0x100
[ 2923.976561] ? shrink_dcache_sb+0x1f0/0x1f0
[ 2923.981177] ? wait_for_completion+0x8a/0x210
[ 2923.985781] ? migrate_swap_stop+0x2d0/0x2d0
[ 2923.990332] do_one_tree+0xe/0x40
[ 2923.994735] shrink_dcache_for_umount+0x3a/0xa0
[ 2923.999077] generic_shutdown_super+0x3e/0x1c0
[ 2924.003350] kill_block_super+0x4b/0x70
[ 2924.007619] deactivate_locked_super+0x65/0x90
[ 2924.011812] cleanup_mnt+0x5c/0xa0
[ 2924.015995] task_work_run+0xce/0xf0
[ 2924.020174] exit_to_usermode_loop+0x115/0x120
[ 2924.024293] do_syscall_64+0x12f/0x160
[ 2924.028479] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 2924.032709] RIP: 0033:0x7fa8b2868487
[ 2924.036888] Code: 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 c9 2b 00 f7 d8 64 89 01 48
[ 2924.045750] RSP: 002b:
00007ffc39824d58 EFLAGS:
00000246 ORIG_RAX:
00000000000000a6
[ 2924.050190] RAX:
0000000000000000 RBX:
00000000008ea030 RCX:
00007fa8b2868487
[ 2924.054604] RDX:
0000000000000001 RSI:
0000000000000000 RDI:
00000000008f4360
[ 2924.058940] RBP:
00000000008f4360 R08:
0000000000000000 R09:
0000000000000014
[ 2924.063186] R10:
00000000000006b2 R11:
0000000000000246 R12:
00007fa8b2d7183c
[ 2924.067418] R13:
0000000000000000 R14:
00000000008ea210 R15:
00007ffc39824fe0
[ 2924.071534] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer joydev input_leds serio_raw snd soundcore mac_hid i2c_piix4 ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi btrfs zstd_decompress zstd_compress xxhash raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear 8139too qxl ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel psmouse aes_x86_64 8139cp crypto_simd cryptd mii glue_helper pata_acpi floppy
[ 2924.098044] CR2:
ffff88018f0db000
[ 2924.102520] ---[ end trace
a8e0d899985faf31 ]---
[ 2924.107012] RIP: 0010:__memset+0x24/0x30
[ 2924.111448] Code: 90 90 90 90 90 90 66 66 90 66 90 49 89 f9 48 89 d1 83 e2 07 48 c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 <f3> 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 f3
[ 2924.120724] RSP: 0018:
ffff88018ddf7ae0 EFLAGS:
00010206
[ 2924.125312] RAX:
0000000000000000 RBX:
ffff8801d549d888 RCX:
1ffffffffffdaffb
[ 2924.129931] RDX:
0000000000000000 RSI:
0000000000000000 RDI:
ffff88018f0daffc
[ 2924.134537] RBP:
ffff88018efc206c R08:
1ffff10031df840d R09:
ffff88018efc206c
[ 2924.139175] R10:
ffffffffffffe1ee R11:
ffffed0031df65fa R12:
0000000000000000
[ 2924.143825] R13:
ffff8801d549dc98 R14:
00000000ffffc3db R15:
ffffea00063bec80
[ 2924.148500] FS:
00007fa8b2f8a840(0000) GS:
ffff8801f3b00000(0000) knlGS:
0000000000000000
[ 2924.153247] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 2924.158003] CR2:
ffff88018f0db000 CR3:
000000018f892000 CR4:
00000000000006e0
[ 2924.164641] BUG: Bad rss-counter state mm:
00000000fa04621e idx:0 val:4
[ 2924.170007] BUG: Bad rss-counter
tate mm:
00000000fa04621e idx:1 val:2
- Location
https://elixir.bootlin.com/linux/v4.18-rc3/source/fs/f2fs/inline.c#L78
memset(addr + from, 0, MAX_INLINE_DATA(inode) - from);
Here the length can be negative.
Reported-by Wen Xu <wen.xu@gatech.edu>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Yunlong Song [Thu, 12 Jul 2018 15:09:28 +0000 (23:09 +0800)]
f2fs: blk_finish_plug of submit_bio in lfs mode
Expand the blk_finish_plug action from blkzoned to normal lfs mode,
since plug will cause the out-of-order IO submission, which is not
friendly to flash in lfs mode.
Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Yunlong Song [Thu, 12 Jul 2018 15:09:26 +0000 (23:09 +0800)]
f2fs: do not set free of current section
For the case when sbi->segs_per_sec > 1, take section:segment = 5 for
example, if segment 1 is just used and allocate new segment 2, and the
blocks of segment 1 is invalidated, at this time, the previous code will
use __set_test_and_free to free the free_secmap and free_sections++,
this is not correct since it is still a current section, so fix it.
Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Daniel Rosenberg [Tue, 10 Jul 2018 03:32:42 +0000 (20:32 -0700)]
f2fs: Keep alloc_valid_block_count in sync
If we attempt to request more blocks than we have room for, we try to
instead request as much as we can, however, alloc_valid_block_count
is not decremented to match the new value, allowing it to drift higher
until the next checkpoint. This always decrements it when the requested
amount cannot be fulfilled.
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Sun, 8 Jul 2018 14:11:01 +0000 (22:11 +0800)]
f2fs: issue small discard by LBA order
For small granularity discard which size is smaller than 64KB, if we
issue those kind of discards orderly by size, their IOs will be spread
into entire logical address, so that in FTL, L2P table will be updated
randomly, result bad wear rate in the table.
In this patch, we choose to issue small discard by LBA order, by this
way, we can expect that L2P table updates from adjacent discard IOs can
be merged in the cache, so it can reduce lifetime wearing of flash.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Sun, 8 Jul 2018 14:08:09 +0000 (22:08 +0800)]
f2fs: stop issuing discard immediately if there is queued IO
For background discard policy, even if there is queued user IO, still
we will check max_requests times for next discard entry, it is unneeded,
let's just stop this round submission immediately.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Sun, 8 Jul 2018 14:16:54 +0000 (22:16 +0800)]
f2fs: clean up with IS_INODE()
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Sun, 8 Jul 2018 14:16:53 +0000 (22:16 +0800)]
f2fs: detect bug_on in f2fs_wait_discard_bios
Add bug_on to detect potential non-empty discard wait list.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Randy Dunlap [Sat, 7 Jul 2018 03:50:57 +0000 (20:50 -0700)]
f2fs: fix defined but not used build warnings
Fix build warnings in f2fs when CONFIG_PROC_FS is not enabled
by marking the unused functions as __maybe_unused.
../fs/f2fs/sysfs.c:519:12: warning: 'segment_info_seq_show' defined but not used [-Wunused-function]
../fs/f2fs/sysfs.c:546:12: warning: 'segment_bits_seq_show' defined but not used [-Wunused-function]
../fs/f2fs/sysfs.c:570:12: warning: 'iostat_info_seq_show' defined but not used [-Wunused-function]
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Chao Yu <yuchao0@huawei.com>
Cc: linux-f2fs-devel@lists.sourceforge.net
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Thu, 5 Jul 2018 06:24:11 +0000 (14:24 +0800)]
f2fs: enable real-time discard by default
f2fs is focused on flash based storage, so let's enable real-time
discard by default, if user don't want to enable it, 'nodiscard'
mount option should be used on mount.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Thu, 5 Jul 2018 11:37:00 +0000 (19:37 +0800)]
f2fs: fix to detect looped node chain correctly
Below dmesg was printed when testing generic/388 of fstest:
F2FS-fs (zram1): find_fsync_dnodes: detect looped node chain, blkaddr:526615, next:526616
F2FS-fs (zram1): Cannot recover all fsync data errno=-22
F2FS-fs (zram1): Mounted with checkpoint version =
22300d0e
F2FS-fs (zram1): find_fsync_dnodes: detect looped node chain, blkaddr:526615, next:526616
F2FS-fs (zram1): Cannot recover all fsync data errno=-22
The reason is that we initialize free_blocks with free blocks of
filesystem, so if filesystem is full, free_blocks can be zero,
below condition will be true, so that, it will fail recovery.
if (++loop_cnt >= free_blocks ||
blkaddr == next_blkaddr_of_node(page))
To fix this issue, initialize free_blocks with correct value which
includes over-privision blocks.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Wed, 1 Aug 2018 11:13:44 +0000 (19:13 +0800)]
f2fs: fix to do sanity check with block address in main area
This patch add to do sanity check with below field:
- cp_pack_total_block_count
- blkaddr of data/node
- extent info
- Overview
BUG() in verify_block_addr() when writing to a corrupted f2fs image
- Reproduce (4.18 upstream kernel)
- POC (poc.c)
static void activity(char *mpoint) {
char *foo_bar_baz;
int err;
static int buf[8192];
memset(buf, 0, sizeof(buf));
err = asprintf(&foo_bar_baz, "%s/foo/bar/baz", mpoint);
int fd = open(foo_bar_baz, O_RDWR | O_TRUNC, 0777);
if (fd >= 0) {
write(fd, (char *)buf, sizeof(buf));
fdatasync(fd);
close(fd);
}
}
int main(int argc, char *argv[]) {
activity(argv[1]);
return 0;
}
- Kernel message
[ 689.349473] F2FS-fs (loop0): Mounted with checkpoint version = 3
[ 699.728662] WARNING: CPU: 0 PID: 1309 at fs/f2fs/segment.c:2860 f2fs_inplace_write_data+0x232/0x240
[ 699.728670] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd mac_hid i2c_piix4 soundcore ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid0 multipath linear 8139too crct10dif_pclmul crc32_pclmul qxl drm_kms_helper syscopyarea aesni_intel sysfillrect sysimgblt fb_sys_fops ttm drm aes_x86_64 crypto_simd cryptd 8139cp glue_helper mii pata_acpi floppy
[ 699.729056] CPU: 0 PID: 1309 Comm: a.out Not tainted 4.18.0-rc1+ #4
[ 699.729064] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 699.729074] RIP: 0010:f2fs_inplace_write_data+0x232/0x240
[ 699.729076] Code: ff e9 cf fe ff ff 49 8d 7d 10 e8 39 45 ad ff 4d 8b 7d 10 be 04 00 00 00 49 8d 7f 48 e8 07 49 ad ff 45 8b 7f 48 e9 fb fe ff ff <0f> 0b f0 41 80 4d 48 04 e9 65 fe ff ff 90 66 66 66 66 90 55 48 8d
[ 699.729130] RSP: 0018:
ffff8801f43af568 EFLAGS:
00010202
[ 699.729139] RAX:
000000000000003f RBX:
ffff8801f43af7b8 RCX:
ffffffffb88c9113
[ 699.729142] RDX:
0000000000000003 RSI:
dffffc0000000000 RDI:
ffff8802024e5540
[ 699.729144] RBP:
ffff8801f43af590 R08:
0000000000000009 R09:
ffffffffffffffe8
[ 699.729147] R10:
0000000000000001 R11:
ffffed0039b0596a R12:
ffff8802024e5540
[ 699.729149] R13:
ffff8801f0335500 R14:
ffff8801e3e7a700 R15:
ffff8801e1ee4450
[ 699.729154] FS:
00007f9bf97f5700(0000) GS:
ffff8801f6e00000(0000) knlGS:
0000000000000000
[ 699.729156] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 699.729159] CR2:
00007f9bf925d170 CR3:
00000001f0c34000 CR4:
00000000000006f0
[ 699.729171] Call Trace:
[ 699.729192] f2fs_do_write_data_page+0x2e2/0xe00
[ 699.729203] ? f2fs_should_update_outplace+0xd0/0xd0
[ 699.729238] ? memcg_drain_all_list_lrus+0x280/0x280
[ 699.729269] ? __radix_tree_replace+0xa3/0x120
[ 699.729276] __write_data_page+0x5c7/0xe30
[ 699.729291] ? kasan_check_read+0x11/0x20
[ 699.729310] ? page_mapped+0x8a/0x110
[ 699.729321] ? page_mkclean+0xe9/0x160
[ 699.729327] ? f2fs_do_write_data_page+0xe00/0xe00
[ 699.729331] ? invalid_page_referenced_vma+0x130/0x130
[ 699.729345] ? clear_page_dirty_for_io+0x332/0x450
[ 699.729351] f2fs_write_cache_pages+0x4ca/0x860
[ 699.729358] ? __write_data_page+0xe30/0xe30
[ 699.729374] ? percpu_counter_add_batch+0x22/0xa0
[ 699.729380] ? kasan_check_write+0x14/0x20
[ 699.729391] ? _raw_spin_lock+0x17/0x40
[ 699.729403] ? f2fs_mark_inode_dirty_sync.part.18+0x16/0x30
[ 699.729413] ? iov_iter_advance+0x113/0x640
[ 699.729418] ? f2fs_write_end+0x133/0x2e0
[ 699.729423] ? balance_dirty_pages_ratelimited+0x239/0x640
[ 699.729428] f2fs_write_data_pages+0x329/0x520
[ 699.729433] ? generic_perform_write+0x250/0x320
[ 699.729438] ? f2fs_write_cache_pages+0x860/0x860
[ 699.729454] ? current_time+0x110/0x110
[ 699.729459] ? f2fs_preallocate_blocks+0x1ef/0x370
[ 699.729464] do_writepages+0x37/0xb0
[ 699.729468] ? f2fs_write_cache_pages+0x860/0x860
[ 699.729472] ? do_writepages+0x37/0xb0
[ 699.729478] __filemap_fdatawrite_range+0x19a/0x1f0
[ 699.729483] ? delete_from_page_cache_batch+0x4e0/0x4e0
[ 699.729496] ? __vfs_write+0x2b2/0x410
[ 699.729501] file_write_and_wait_range+0x66/0xb0
[ 699.729506] f2fs_do_sync_file+0x1f9/0xd90
[ 699.729511] ? truncate_partial_data_page+0x290/0x290
[ 699.729521] ? __sb_end_write+0x30/0x50
[ 699.729526] ? vfs_write+0x20f/0x260
[ 699.729530] f2fs_sync_file+0x9a/0xb0
[ 699.729534] ? f2fs_do_sync_file+0xd90/0xd90
[ 699.729548] vfs_fsync_range+0x68/0x100
[ 699.729554] ? __fget_light+0xc9/0xe0
[ 699.729558] do_fsync+0x3d/0x70
[ 699.729562] __x64_sys_fdatasync+0x24/0x30
[ 699.729585] do_syscall_64+0x78/0x170
[ 699.729595] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 699.729613] RIP: 0033:0x7f9bf930d800
[ 699.729615] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 49 bf 2c 00 00 75 10 b8 4b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 be 78 01 00 48 89 04 24
[ 699.729668] RSP: 002b:
00007ffee3606c68 EFLAGS:
00000246 ORIG_RAX:
000000000000004b
[ 699.729673] RAX:
ffffffffffffffda RBX:
0000000000000000 RCX:
00007f9bf930d800
[ 699.729675] RDX:
0000000000008000 RSI:
00000000006010a0 RDI:
0000000000000003
[ 699.729678] RBP:
00007ffee3606ca0 R08:
0000000001503010 R09:
0000000000000000
[ 699.729680] R10:
00000000000002e8 R11:
0000000000000246 R12:
0000000000400610
[ 699.729683] R13:
00007ffee3606da0 R14:
0000000000000000 R15:
0000000000000000
[ 699.729687] ---[ end trace
4ce02f25ff7d3df5 ]---
[ 699.729782] ------------[ cut here ]------------
[ 699.729785] kernel BUG at fs/f2fs/segment.h:654!
[ 699.731055] invalid opcode: 0000 [#1] SMP KASAN PTI
[ 699.732104] CPU: 0 PID: 1309 Comm: a.out Tainted: G W 4.18.0-rc1+ #4
[ 699.733684] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 699.735611] RIP: 0010:f2fs_submit_page_bio+0x29b/0x730
[ 699.736649] Code: 54 49 8d bd 18 04 00 00 e8 b2 59 af ff 41 8b 8d 18 04 00 00 8b 45 b8 41 d3 e6 44 01 f0 4c 8d 73 14 41 39 c7 0f 82 37 fe ff ff <0f> 0b 65 8b 05 2c 04 77 47 89 c0 48 0f a3 05 52 c1 d5 01 0f 92 c0
[ 699.740524] RSP: 0018:
ffff8801f43af508 EFLAGS:
00010283
[ 699.741573] RAX:
0000000000000000 RBX:
ffff8801f43af7b8 RCX:
ffffffffb88a7cef
[ 699.743006] RDX:
0000000000000007 RSI:
dffffc0000000000 RDI:
ffff8801e3e7a64c
[ 699.744426] RBP:
ffff8801f43af558 R08:
ffffed003e066b55 R09:
ffffed003e066b55
[ 699.745833] R10:
0000000000000001 R11:
ffffed003e066b54 R12:
ffffea0007876940
[ 699.747256] R13:
ffff8801f0335500 R14:
ffff8801e3e7a600 R15:
0000000000000001
[ 699.748683] FS:
00007f9bf97f5700(0000) GS:
ffff8801f6e00000(0000) knlGS:
0000000000000000
[ 699.750293] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 699.751462] CR2:
00007f9bf925d170 CR3:
00000001f0c34000 CR4:
00000000000006f0
[ 699.752874] Call Trace:
[ 699.753386] ? f2fs_inplace_write_data+0x93/0x240
[ 699.754341] f2fs_inplace_write_data+0xd2/0x240
[ 699.755271] f2fs_do_write_data_page+0x2e2/0xe00
[ 699.756214] ? f2fs_should_update_outplace+0xd0/0xd0
[ 699.757215] ? memcg_drain_all_list_lrus+0x280/0x280
[ 699.758209] ? __radix_tree_replace+0xa3/0x120
[ 699.759164] __write_data_page+0x5c7/0xe30
[ 699.760002] ? kasan_check_read+0x11/0x20
[ 699.760823] ? page_mapped+0x8a/0x110
[ 699.761573] ? page_mkclean+0xe9/0x160
[ 699.762345] ? f2fs_do_write_data_page+0xe00/0xe00
[ 699.763332] ? invalid_page_referenced_vma+0x130/0x130
[ 699.764374] ? clear_page_dirty_for_io+0x332/0x450
[ 699.765347] f2fs_write_cache_pages+0x4ca/0x860
[ 699.766276] ? __write_data_page+0xe30/0xe30
[ 699.767161] ? percpu_counter_add_batch+0x22/0xa0
[ 699.768112] ? kasan_check_write+0x14/0x20
[ 699.768951] ? _raw_spin_lock+0x17/0x40
[ 699.769739] ? f2fs_mark_inode_dirty_sync.part.18+0x16/0x30
[ 699.770885] ? iov_iter_advance+0x113/0x640
[ 699.771743] ? f2fs_write_end+0x133/0x2e0
[ 699.772569] ? balance_dirty_pages_ratelimited+0x239/0x640
[ 699.773680] f2fs_write_data_pages+0x329/0x520
[ 699.774603] ? generic_perform_write+0x250/0x320
[ 699.775544] ? f2fs_write_cache_pages+0x860/0x860
[ 699.776510] ? current_time+0x110/0x110
[ 699.777299] ? f2fs_preallocate_blocks+0x1ef/0x370
[ 699.778279] do_writepages+0x37/0xb0
[ 699.779026] ? f2fs_write_cache_pages+0x860/0x860
[ 699.779978] ? do_writepages+0x37/0xb0
[ 699.780755] __filemap_fdatawrite_range+0x19a/0x1f0
[ 699.781746] ? delete_from_page_cache_batch+0x4e0/0x4e0
[ 699.782820] ? __vfs_write+0x2b2/0x410
[ 699.783597] file_write_and_wait_range+0x66/0xb0
[ 699.784540] f2fs_do_sync_file+0x1f9/0xd90
[ 699.785381] ? truncate_partial_data_page+0x290/0x290
[ 699.786415] ? __sb_end_write+0x30/0x50
[ 699.787204] ? vfs_write+0x20f/0x260
[ 699.787941] f2fs_sync_file+0x9a/0xb0
[ 699.788694] ? f2fs_do_sync_file+0xd90/0xd90
[ 699.789572] vfs_fsync_range+0x68/0x100
[ 699.790360] ? __fget_light+0xc9/0xe0
[ 699.791128] do_fsync+0x3d/0x70
[ 699.791779] __x64_sys_fdatasync+0x24/0x30
[ 699.792614] do_syscall_64+0x78/0x170
[ 699.793371] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 699.794406] RIP: 0033:0x7f9bf930d800
[ 699.795134] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 49 bf 2c 00 00 75 10 b8 4b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 be 78 01 00 48 89 04 24
[ 699.798960] RSP: 002b:
00007ffee3606c68 EFLAGS:
00000246 ORIG_RAX:
000000000000004b
[ 699.800483] RAX:
ffffffffffffffda RBX:
0000000000000000 RCX:
00007f9bf930d800
[ 699.801923] RDX:
0000000000008000 RSI:
00000000006010a0 RDI:
0000000000000003
[ 699.803373] RBP:
00007ffee3606ca0 R08:
0000000001503010 R09:
0000000000000000
[ 699.804798] R10:
00000000000002e8 R11:
0000000000000246 R12:
0000000000400610
[ 699.806233] R13:
00007ffee3606da0 R14:
0000000000000000 R15:
0000000000000000
[ 699.807667] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd mac_hid i2c_piix4 soundcore ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid0 multipath linear 8139too crct10dif_pclmul crc32_pclmul qxl drm_kms_helper syscopyarea aesni_intel sysfillrect sysimgblt fb_sys_fops ttm drm aes_x86_64 crypto_simd cryptd 8139cp glue_helper mii pata_acpi floppy
[ 699.817079] ---[ end trace
4ce02f25ff7d3df6 ]---
[ 699.818068] RIP: 0010:f2fs_submit_page_bio+0x29b/0x730
[ 699.819114] Code: 54 49 8d bd 18 04 00 00 e8 b2 59 af ff 41 8b 8d 18 04 00 00 8b 45 b8 41 d3 e6 44 01 f0 4c 8d 73 14 41 39 c7 0f 82 37 fe ff ff <0f> 0b 65 8b 05 2c 04 77 47 89 c0 48 0f a3 05 52 c1 d5 01 0f 92 c0
[ 699.822919] RSP: 0018:
ffff8801f43af508 EFLAGS:
00010283
[ 699.823977] RAX:
0000000000000000 RBX:
ffff8801f43af7b8 RCX:
ffffffffb88a7cef
[ 699.825436] RDX:
0000000000000007 RSI:
dffffc0000000000 RDI:
ffff8801e3e7a64c
[ 699.826881] RBP:
ffff8801f43af558 R08:
ffffed003e066b55 R09:
ffffed003e066b55
[ 699.828292] R10:
0000000000000001 R11:
ffffed003e066b54 R12:
ffffea0007876940
[ 699.829750] R13:
ffff8801f0335500 R14:
ffff8801e3e7a600 R15:
0000000000000001
[ 699.831192] FS:
00007f9bf97f5700(0000) GS:
ffff8801f6e00000(0000) knlGS:
0000000000000000
[ 699.832793] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 699.833981] CR2:
00007f9bf925d170 CR3:
00000001f0c34000 CR4:
00000000000006f0
[ 699.835556] ==================================================================
[ 699.837029] BUG: KASAN: stack-out-of-bounds in update_stack_state+0x38c/0x3e0
[ 699.838462] Read of size 8 at addr
ffff8801f43af970 by task a.out/1309
[ 699.840086] CPU: 0 PID: 1309 Comm: a.out Tainted: G D W 4.18.0-rc1+ #4
[ 699.841603] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 699.843475] Call Trace:
[ 699.843982] dump_stack+0x7b/0xb5
[ 699.844661] print_address_description+0x70/0x290
[ 699.845607] kasan_report+0x291/0x390
[ 699.846351] ? update_stack_state+0x38c/0x3e0
[ 699.853831] __asan_load8+0x54/0x90
[ 699.854569] update_stack_state+0x38c/0x3e0
[ 699.855428] ? __read_once_size_nocheck.constprop.7+0x20/0x20
[ 699.856601] ? __save_stack_trace+0x5e/0x100
[ 699.857476] unwind_next_frame.part.5+0x18e/0x490
[ 699.858448] ? unwind_dump+0x290/0x290
[ 699.859217] ? clear_page_dirty_for_io+0x332/0x450
[ 699.860185] __unwind_start+0x106/0x190
[ 699.860974] __save_stack_trace+0x5e/0x100
[ 699.861808] ? __save_stack_trace+0x5e/0x100
[ 699.862691] ? unlink_anon_vmas+0xba/0x2c0
[ 699.863525] save_stack_trace+0x1f/0x30
[ 699.864312] save_stack+0x46/0xd0
[ 699.864993] ? __alloc_pages_slowpath+0x1420/0x1420
[ 699.865990] ? flush_tlb_mm_range+0x15e/0x220
[ 699.866889] ? kasan_check_write+0x14/0x20
[ 699.867724] ? __dec_node_state+0x92/0xb0
[ 699.868543] ? lock_page_memcg+0x85/0xf0
[ 699.869350] ? unlock_page_memcg+0x16/0x80
[ 699.870185] ? page_remove_rmap+0x198/0x520
[ 699.871048] ? mark_page_accessed+0x133/0x200
[ 699.871930] ? _cond_resched+0x1a/0x50
[ 699.872700] ? unmap_page_range+0xcd4/0xe50
[ 699.873551] ? rb_next+0x58/0x80
[ 699.874217] ? rb_next+0x58/0x80
[ 699.874895] __kasan_slab_free+0x13c/0x1a0
[ 699.875734] ? unlink_anon_vmas+0xba/0x2c0
[ 699.876563] kasan_slab_free+0xe/0x10
[ 699.877315] kmem_cache_free+0x89/0x1e0
[ 699.878095] unlink_anon_vmas+0xba/0x2c0
[ 699.878913] free_pgtables+0x101/0x1b0
[ 699.879677] exit_mmap+0x146/0x2a0
[ 699.880378] ? __ia32_sys_munmap+0x50/0x50
[ 699.881214] ? kasan_check_read+0x11/0x20
[ 699.882052] ? mm_update_next_owner+0x322/0x380
[ 699.882985] mmput+0x8b/0x1d0
[ 699.883602] do_exit+0x43a/0x1390
[ 699.884288] ? mm_update_next_owner+0x380/0x380
[ 699.885212] ? f2fs_sync_file+0x9a/0xb0
[ 699.885995] ? f2fs_do_sync_file+0xd90/0xd90
[ 699.886877] ? vfs_fsync_range+0x68/0x100
[ 699.887694] ? __fget_light+0xc9/0xe0
[ 699.888442] ? do_fsync+0x3d/0x70
[ 699.889118] ? __x64_sys_fdatasync+0x24/0x30
[ 699.889996] rewind_stack_do_exit+0x17/0x20
[ 699.890860] RIP: 0033:0x7f9bf930d800
[ 699.891585] Code: Bad RIP value.
[ 699.892268] RSP: 002b:
00007ffee3606c68 EFLAGS:
00000246 ORIG_RAX:
000000000000004b
[ 699.893781] RAX:
ffffffffffffffda RBX:
0000000000000000 RCX:
00007f9bf930d800
[ 699.895220] RDX:
0000000000008000 RSI:
00000000006010a0 RDI:
0000000000000003
[ 699.896643] RBP:
00007ffee3606ca0 R08:
0000000001503010 R09:
0000000000000000
[ 699.898069] R10:
00000000000002e8 R11:
0000000000000246 R12:
0000000000400610
[ 699.899505] R13:
00007ffee3606da0 R14:
0000000000000000 R15:
0000000000000000
[ 699.901241] The buggy address belongs to the page:
[ 699.902215] page:
ffffea0007d0ebc0 count:0 mapcount:0 mapping:
0000000000000000 index:0x0
[ 699.903811] flags: 0x2ffff0000000000()
[ 699.904585] raw:
02ffff0000000000 0000000000000000 ffffffff07d00101 0000000000000000
[ 699.906125] raw:
0000000000000000 0000000000240000 00000000ffffffff 0000000000000000
[ 699.907673] page dumped because: kasan: bad access detected
[ 699.909108] Memory state around the buggy address:
[ 699.910077]
ffff8801f43af800: 00 f1 f1 f1 f1 00 f4 f4 f4 f3 f3 f3 f3 00 00 00
[ 699.911528]
ffff8801f43af880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 699.912953] >
ffff8801f43af900: 00 00 00 00 00 00 00 00 f1 01 f4 f4 f4 f2 f2 f2
[ 699.914392] ^
[ 699.915758]
ffff8801f43af980: f2 00 f4 f4 00 00 00 00 f2 00 00 00 00 00 00 00
[ 699.917193]
ffff8801f43afa00: 00 00 00 00 00 00 00 00 00 f3 f3 f3 00 00 00 00
[ 699.918634] ==================================================================
- Location
https://elixir.bootlin.com/linux/v4.18-rc1/source/fs/f2fs/segment.h#L644
Reported-by Wen Xu <wen.xu@gatech.edu>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Wed, 4 Jul 2018 13:20:05 +0000 (21:20 +0800)]
f2fs: fix to skip GC if type in SSA and SIT is inconsistent
If segment type in SSA and SIT is inconsistent, we will encounter below
BUG_ON during GC, to avoid this panic, let's just skip doing GC on such
segment.
The bug is triggered with image reported in below link:
https://bugzilla.kernel.org/show_bug.cgi?id=200223
[ 388.060262] ------------[ cut here ]------------
[ 388.060268] kernel BUG at /home/y00370721/git/devf2fs/gc.c:989!
[ 388.061172] invalid opcode: 0000 [#1] SMP
[ 388.061773] Modules linked in: f2fs(O) bluetooth ecdh_generic xt_tcpudp iptable_filter ip_tables x_tables lp ttm drm_kms_helper drm intel_rapl sb_edac crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel fb_sys_fops ppdev aes_x86_64 syscopyarea crypto_simd sysfillrect parport_pc joydev sysimgblt glue_helper parport cryptd i2c_piix4 serio_raw mac_hid btrfs hid_generic usbhid hid raid6_pq psmouse pata_acpi floppy
[ 388.064247] CPU: 7 PID: 4151 Comm: f2fs_gc-7:0 Tainted: G O 4.13.0-rc1+ #26
[ 388.065306] Hardware name: Xen HVM domU, BIOS 4.1.2_115-900.260_ 11/06/2015
[ 388.066058] task:
ffff880201583b80 task.stack:
ffffc90004d7c000
[ 388.069948] RIP: 0010:do_garbage_collect+0xcc8/0xcd0 [f2fs]
[ 388.070766] RSP: 0018:
ffffc90004d7fc68 EFLAGS:
00010202
[ 388.071783] RAX:
ffff8801ed227000 RBX:
0000000000000001 RCX:
ffffea0007b489c0
[ 388.072700] RDX:
ffff880000000000 RSI:
0000000000000001 RDI:
ffffea0007b489c0
[ 388.073607] RBP:
ffffc90004d7fd58 R08:
0000000000000003 R09:
ffffea0007b489dc
[ 388.074619] R10:
0000000000000000 R11:
0052782ab317138d R12:
0000000000000018
[ 388.075625] R13:
0000000000000018 R14:
ffff880211ceb000 R15:
ffff880211ceb000
[ 388.076687] FS:
0000000000000000(0000) GS:
ffff880214fc0000(0000) knlGS:
0000000000000000
[ 388.083277] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 388.084536] CR2:
0000000000e18c60 CR3:
00000001ecf2e000 CR4:
00000000001406e0
[ 388.085748] Call Trace:
[ 388.086690] ? find_next_bit+0xb/0x10
[ 388.088091] f2fs_gc+0x1a8/0x9d0 [f2fs]
[ 388.088888] ? lock_timer_base+0x7d/0xa0
[ 388.090213] ? try_to_del_timer_sync+0x44/0x60
[ 388.091698] gc_thread_func+0x342/0x4b0 [f2fs]
[ 388.092892] ? wait_woken+0x80/0x80
[ 388.094098] kthread+0x109/0x140
[ 388.095010] ? f2fs_gc+0x9d0/0x9d0 [f2fs]
[ 388.096043] ? kthread_park+0x60/0x60
[ 388.097281] ret_from_fork+0x25/0x30
[ 388.098401] Code: ff ff 48 83 e8 01 48 89 44 24 58 e9 27 f8 ff ff 48 83 e8 01 e9 78 fc ff ff 48 8d 78 ff e9 17 fb ff ff 48 83 ef 01 e9 4d f4 ff ff <0f> 0b 66 0f 1f 44 00 00 0f 1f 44 00 00 55 48 89 e5 41 56 41 55
[ 388.100864] RIP: do_garbage_collect+0xcc8/0xcd0 [f2fs] RSP:
ffffc90004d7fc68
[ 388.101810] ---[ end trace
81c73d6e6b7da61d ]---
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Wed, 4 Jul 2018 10:04:10 +0000 (18:04 +0800)]
f2fs: try grabbing node page lock aggressively in sync scenario
In synchronous scenario, like in checkpoint(), we are going to flush
dirty node pages to device synchronously, we can easily failed
writebacking node page due to trylock_page() failure, especially in
condition of intensive lock competition, which can cause long latency
of checkpoint(). So let's use lock_page() in synchronous scenario to
avoid this issue.
Signed-off-by: Yunlei He <heyunlei@huawei.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Sahitya Tummala [Mon, 2 Jul 2018 06:07:40 +0000 (11:37 +0530)]
f2fs: show the fsync_mode=nobarrier mount option
This patch shows the fsync_mode=nobarrier mount option in
f2fs_show_options().
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Yunlei He [Mon, 2 Jul 2018 02:40:19 +0000 (10:40 +0800)]
f2fs: check the right return value of memory alloc function
This patch check the right return value of memory alloc function
Signed-off-by: Yunlei He <heyunlei@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Guenter Roeck [Sun, 1 Jul 2018 20:57:06 +0000 (13:57 -0700)]
f2fs: Replace strncpy with memcpy
gcc 8.1.0 complains:
fs/f2fs/namei.c: In function 'f2fs_update_extension_list':
fs/f2fs/namei.c:257:3: warning:
'strncpy' output truncated before terminating nul copying
as many bytes from a string as its length
fs/f2fs/namei.c:249:3: warning:
'strncpy' output truncated before terminating nul copying
as many bytes from a string as its length
Using strncpy() is indeed less than perfect since the length of data to
be copied has already been determined with strlen(). Replace strncpy()
with memcpy() to address the warning and optimize the code a little.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Gao Xiang [Sat, 30 Jun 2018 15:57:03 +0000 (23:57 +0800)]
f2fs: avoid the global name 'fault_name'
Non-prefix global name 'fault_name' will pollute global
namespace, fix it.
Refer to:
https://lists.01.org/pipermail/kbuild-all/2018-June/049660.html
To: Jaegeuk Kim <jaegeuk@kernel.org>
To: Chao Yu <yuchao0@huawei.com>
Cc: linux-f2fs-devel@lists.sourceforge.net
Cc: linux-kernel@vger.kernel.org
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Sat, 30 Jun 2018 10:13:40 +0000 (18:13 +0800)]
f2fs: fix to do sanity check with reserved blkaddr of inline inode
As Wen Xu reported in bugzilla, after image was injected with random data
by fuzzing, inline inode would contain invalid reserved blkaddr, then
during inline conversion, we will encounter illegal memory accessing
reported by KASAN, the root cause of this is when writing out converted
inline page, we will use invalid reserved blkaddr to update sit bitmap,
result in accessing memory beyond sit bitmap boundary.
In order to fix this issue, let's do sanity check with reserved block
address of inline inode to avoid above condition.
https://bugzilla.kernel.org/show_bug.cgi?id=200179
[ 1428.846352] BUG: KASAN: use-after-free in update_sit_entry+0x80/0x7f0
[ 1428.846618] Read of size 4 at addr
ffff880194483540 by task a.out/2741
[ 1428.846855] CPU: 0 PID: 2741 Comm: a.out Tainted: G W 4.17.0+ #1
[ 1428.846858] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 1428.846860] Call Trace:
[ 1428.846868] dump_stack+0x71/0xab
[ 1428.846875] print_address_description+0x6b/0x290
[ 1428.846881] kasan_report+0x28e/0x390
[ 1428.846888] ? update_sit_entry+0x80/0x7f0
[ 1428.846898] update_sit_entry+0x80/0x7f0
[ 1428.846906] f2fs_allocate_data_block+0x6db/0xc70
[ 1428.846914] ? f2fs_get_node_info+0x14f/0x590
[ 1428.846920] do_write_page+0xc8/0x150
[ 1428.846928] f2fs_outplace_write_data+0xfe/0x210
[ 1428.846935] ? f2fs_do_write_node_page+0x170/0x170
[ 1428.846941] ? radix_tree_tag_clear+0xff/0x130
[ 1428.846946] ? __mod_node_page_state+0x22/0xa0
[ 1428.846951] ? inc_zone_page_state+0x54/0x100
[ 1428.846956] ? __test_set_page_writeback+0x336/0x5d0
[ 1428.846964] f2fs_convert_inline_page+0x407/0x6d0
[ 1428.846971] ? f2fs_read_inline_data+0x3b0/0x3b0
[ 1428.846978] ? __get_node_page+0x335/0x6b0
[ 1428.846987] f2fs_convert_inline_inode+0x41b/0x500
[ 1428.846994] ? f2fs_convert_inline_page+0x6d0/0x6d0
[ 1428.847000] ? kasan_unpoison_shadow+0x31/0x40
[ 1428.847005] ? kasan_kmalloc+0xa6/0xd0
[ 1428.847024] f2fs_file_mmap+0x79/0xc0
[ 1428.847029] mmap_region+0x58b/0x880
[ 1428.847037] ? arch_get_unmapped_area+0x370/0x370
[ 1428.847042] do_mmap+0x55b/0x7a0
[ 1428.847048] vm_mmap_pgoff+0x16f/0x1c0
[ 1428.847055] ? vma_is_stack_for_current+0x50/0x50
[ 1428.847062] ? __fsnotify_update_child_dentry_flags.part.1+0x160/0x160
[ 1428.847068] ? do_sys_open+0x206/0x2a0
[ 1428.847073] ? __fget+0xb4/0x100
[ 1428.847079] ksys_mmap_pgoff+0x278/0x360
[ 1428.847085] ? find_mergeable_anon_vma+0x50/0x50
[ 1428.847091] do_syscall_64+0x73/0x160
[ 1428.847098] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 1428.847102] RIP: 0033:0x7fb1430766ba
[ 1428.847103] Code: 89 f5 41 54 49 89 fc 55 53 74 35 49 63 e8 48 63 da 4d 89 f9 49 89 e8 4d 63 d6 48 89 da 4c 89 ee 4c 89 e7 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 56 5b 5d 41 5c 41 5d 41 5e 41 5f c3 0f 1f 00
[ 1428.847162] RSP: 002b:
00007ffc651d9388 EFLAGS:
00000246 ORIG_RAX:
0000000000000009
[ 1428.847167] RAX:
ffffffffffffffda RBX:
0000000000000001 RCX:
00007fb1430766ba
[ 1428.847170] RDX:
0000000000000001 RSI:
0000000000001000 RDI:
0000000000000000
[ 1428.847173] RBP:
0000000000000003 R08:
0000000000000003 R09:
0000000000000000
[ 1428.847176] R10:
0000000000008002 R11:
0000000000000246 R12:
0000000000000000
[ 1428.847179] R13:
0000000000001000 R14:
0000000000008002 R15:
0000000000000000
[ 1428.847252] Allocated by task 2683:
[ 1428.847372] kasan_kmalloc+0xa6/0xd0
[ 1428.847380] kmem_cache_alloc+0xc8/0x1e0
[ 1428.847385] getname_flags+0x73/0x2b0
[ 1428.847390] user_path_at_empty+0x1d/0x40
[ 1428.847395] vfs_statx+0xc1/0x150
[ 1428.847401] __do_sys_newlstat+0x7e/0xd0
[ 1428.847405] do_syscall_64+0x73/0x160
[ 1428.847411] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 1428.847466] Freed by task 2683:
[ 1428.847566] __kasan_slab_free+0x137/0x190
[ 1428.847571] kmem_cache_free+0x85/0x1e0
[ 1428.847575] filename_lookup+0x191/0x280
[ 1428.847580] vfs_statx+0xc1/0x150
[ 1428.847585] __do_sys_newlstat+0x7e/0xd0
[ 1428.847590] do_syscall_64+0x73/0x160
[ 1428.847596] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 1428.847648] The buggy address belongs to the object at
ffff880194483300
which belongs to the cache names_cache of size 4096
[ 1428.847946] The buggy address is located 576 bytes inside of
4096-byte region [
ffff880194483300,
ffff880194484300)
[ 1428.848234] The buggy address belongs to the page:
[ 1428.848366] page:
ffffea0006512000 count:1 mapcount:0 mapping:
ffff8801f3586380 index:0x0 compound_mapcount: 0
[ 1428.848606] flags: 0x17fff8000008100(slab|head)
[ 1428.848737] raw:
017fff8000008100 dead000000000100 dead000000000200 ffff8801f3586380
[ 1428.848931] raw:
0000000000000000 0000000000070007 00000001ffffffff 0000000000000000
[ 1428.849122] page dumped because: kasan: bad access detected
[ 1428.849305] Memory state around the buggy address:
[ 1428.849436]
ffff880194483400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 1428.849620]
ffff880194483480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 1428.849804] >
ffff880194483500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 1428.849985] ^
[ 1428.850120]
ffff880194483580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 1428.850303]
ffff880194483600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 1428.850498] ==================================================================
Reported-by: Wen Xu <wen.xu@gatech.edu>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Fri, 29 Jun 2018 05:55:22 +0000 (13:55 +0800)]
f2fs: fix to do sanity check with node footer and iblocks
This patch adds to do sanity check with below fields of inode to
avoid reported panic.
- node footer
- iblocks
https://bugzilla.kernel.org/show_bug.cgi?id=200223
- Overview
BUG() triggered in f2fs_truncate_inode_blocks() when un-mounting a mounted f2fs image after writing to it
- Reproduce
- POC (poc.c)
static void activity(char *mpoint) {
char *foo_bar_baz;
int err;
static int buf[8192];
memset(buf, 0, sizeof(buf));
err = asprintf(&foo_bar_baz, "%s/foo/bar/baz", mpoint);
// open / write / read
int fd = open(foo_bar_baz, O_RDWR | O_TRUNC, 0777);
if (fd >= 0) {
write(fd, (char *)buf, 517);
write(fd, (char *)buf, sizeof(buf));
close(fd);
}
}
int main(int argc, char *argv[]) {
activity(argv[1]);
return 0;
}
- Kernel meesage
[ 552.479723] F2FS-fs (loop0): Mounted with checkpoint version = 2
[ 556.451891] ------------[ cut here ]------------
[ 556.451899] kernel BUG at fs/f2fs/node.c:987!
[ 556.452920] invalid opcode: 0000 [#1] SMP KASAN PTI
[ 556.453936] CPU: 1 PID: 1310 Comm: umount Not tainted 4.18.0-rc1+ #4
[ 556.455213] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 556.457140] RIP: 0010:f2fs_truncate_inode_blocks+0x4a7/0x6f0
[ 556.458280] Code: e8 ae ea ff ff 41 89 c7 c1 e8 1f 84 c0 74 0a 41 83 ff fe 0f 85 35 ff ff ff 81 85 b0 fe ff ff fb 03 00 00 e9 f7 fd ff ff 0f 0b <0f> 0b e8 62 b7 9a 00 48 8b bd a0 fe ff ff e8 56 54 ae ff 48 8b b5
[ 556.462015] RSP: 0018:
ffff8801f292f808 EFLAGS:
00010286
[ 556.463068] RAX:
ffffed003e73242d RBX:
ffff8801f292f958 RCX:
ffffffffb88b81bc
[ 556.464479] RDX:
0000000000000000 RSI:
0000000000000004 RDI:
ffff8801f3992164
[ 556.465901] RBP:
ffff8801f292f980 R08:
ffffed003e73242d R09:
ffffed003e73242d
[ 556.467311] R10:
0000000000000001 R11:
ffffed003e73242c R12:
00000000fffffc64
[ 556.468706] R13:
ffff8801f3992000 R14:
0000000000000058 R15:
00000000ffff8801
[ 556.470117] FS:
00007f8029297840(0000) GS:
ffff8801f6f00000(0000) knlGS:
0000000000000000
[ 556.471702] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 556.472838] CR2:
000055f5f57305d8 CR3:
00000001f18b0000 CR4:
00000000000006e0
[ 556.474265] Call Trace:
[ 556.474782] ? f2fs_alloc_nid_failed+0xf0/0xf0
[ 556.475686] ? truncate_nodes+0x980/0x980
[ 556.476516] ? pagecache_get_page+0x21f/0x2f0
[ 556.477412] ? __asan_loadN+0xf/0x20
[ 556.478153] ? __get_node_page+0x331/0x5b0
[ 556.478992] ? reweight_entity+0x1e6/0x3b0
[ 556.479826] f2fs_truncate_blocks+0x55e/0x740
[ 556.480709] ? f2fs_truncate_data_blocks+0x20/0x20
[ 556.481689] ? __radix_tree_lookup+0x34/0x160
[ 556.482630] ? radix_tree_lookup+0xd/0x10
[ 556.483445] f2fs_truncate+0xd4/0x1a0
[ 556.484206] f2fs_evict_inode+0x5ce/0x630
[ 556.485032] evict+0x16f/0x290
[ 556.485664] iput+0x280/0x300
[ 556.486300] dentry_unlink_inode+0x165/0x1e0
[ 556.487169] __dentry_kill+0x16a/0x260
[ 556.487936] dentry_kill+0x70/0x250
[ 556.488651] shrink_dentry_list+0x125/0x260
[ 556.489504] shrink_dcache_parent+0xc1/0x110
[ 556.490379] ? shrink_dcache_sb+0x200/0x200
[ 556.491231] ? bit_wait_timeout+0xc0/0xc0
[ 556.492047] do_one_tree+0x12/0x40
[ 556.492743] shrink_dcache_for_umount+0x3f/0xa0
[ 556.493656] generic_shutdown_super+0x43/0x1c0
[ 556.494561] kill_block_super+0x52/0x80
[ 556.495341] kill_f2fs_super+0x62/0x70
[ 556.496105] deactivate_locked_super+0x6f/0xa0
[ 556.497004] deactivate_super+0x5e/0x80
[ 556.497785] cleanup_mnt+0x61/0xa0
[ 556.498492] __cleanup_mnt+0x12/0x20
[ 556.499218] task_work_run+0xc8/0xf0
[ 556.499949] exit_to_usermode_loop+0x125/0x130
[ 556.500846] do_syscall_64+0x138/0x170
[ 556.501609] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 556.502659] RIP: 0033:0x7f8028b77487
[ 556.503384] Code: 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 c9 2b 00 f7 d8 64 89 01 48
[ 556.507137] RSP: 002b:
00007fff9f2e3598 EFLAGS:
00000246 ORIG_RAX:
00000000000000a6
[ 556.508637] RAX:
0000000000000000 RBX:
0000000000ebd030 RCX:
00007f8028b77487
[ 556.510069] RDX:
0000000000000001 RSI:
0000000000000000 RDI:
0000000000ec41e0
[ 556.511481] RBP:
0000000000ec41e0 R08:
0000000000000000 R09:
0000000000000014
[ 556.512892] R10:
00000000000006b2 R11:
0000000000000246 R12:
00007f802908083c
[ 556.514320] R13:
0000000000000000 R14:
0000000000ebd210 R15:
00007fff9f2e3820
[ 556.515745] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd mac_hid i2c_piix4 soundcore ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid0 multipath linear 8139too crct10dif_pclmul crc32_pclmul qxl drm_kms_helper syscopyarea aesni_intel sysfillrect sysimgblt fb_sys_fops ttm drm aes_x86_64 crypto_simd cryptd 8139cp glue_helper mii pata_acpi floppy
[ 556.529276] ---[ end trace
4ce02f25ff7d3df5 ]---
[ 556.530340] RIP: 0010:f2fs_truncate_inode_blocks+0x4a7/0x6f0
[ 556.531513] Code: e8 ae ea ff ff 41 89 c7 c1 e8 1f 84 c0 74 0a 41 83 ff fe 0f 85 35 ff ff ff 81 85 b0 fe ff ff fb 03 00 00 e9 f7 fd ff ff 0f 0b <0f> 0b e8 62 b7 9a 00 48 8b bd a0 fe ff ff e8 56 54 ae ff 48 8b b5
[ 556.535330] RSP: 0018:
ffff8801f292f808 EFLAGS:
00010286
[ 556.536395] RAX:
ffffed003e73242d RBX:
ffff8801f292f958 RCX:
ffffffffb88b81bc
[ 556.537824] RDX:
0000000000000000 RSI:
0000000000000004 RDI:
ffff8801f3992164
[ 556.539290] RBP:
ffff8801f292f980 R08:
ffffed003e73242d R09:
ffffed003e73242d
[ 556.540709] R10:
0000000000000001 R11:
ffffed003e73242c R12:
00000000fffffc64
[ 556.542131] R13:
ffff8801f3992000 R14:
0000000000000058 R15:
00000000ffff8801
[ 556.543579] FS:
00007f8029297840(0000) GS:
ffff8801f6f00000(0000) knlGS:
0000000000000000
[ 556.545180] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 556.546338] CR2:
000055f5f57305d8 CR3:
00000001f18b0000 CR4:
00000000000006e0
[ 556.547809] ==================================================================
[ 556.549248] BUG: KASAN: stack-out-of-bounds in arch_tlb_gather_mmu+0x52/0x170
[ 556.550672] Write of size 8 at addr
ffff8801f292fd10 by task umount/1310
[ 556.552338] CPU: 1 PID: 1310 Comm: umount Tainted: G D 4.18.0-rc1+ #4
[ 556.553886] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 556.555756] Call Trace:
[ 556.556264] dump_stack+0x7b/0xb5
[ 556.556944] print_address_description+0x70/0x290
[ 556.557903] kasan_report+0x291/0x390
[ 556.558649] ? arch_tlb_gather_mmu+0x52/0x170
[ 556.559537] __asan_store8+0x57/0x90
[ 556.560268] arch_tlb_gather_mmu+0x52/0x170
[ 556.561110] tlb_gather_mmu+0x12/0x40
[ 556.561862] exit_mmap+0x123/0x2a0
[ 556.562555] ? __ia32_sys_munmap+0x50/0x50
[ 556.563384] ? exit_aio+0x98/0x230
[ 556.564079] ? __x32_compat_sys_io_submit+0x260/0x260
[ 556.565099] ? taskstats_exit+0x1f4/0x640
[ 556.565925] ? kasan_check_read+0x11/0x20
[ 556.566739] ? mm_update_next_owner+0x322/0x380
[ 556.567652] mmput+0x8b/0x1d0
[ 556.568260] do_exit+0x43a/0x1390
[ 556.568937] ? mm_update_next_owner+0x380/0x380
[ 556.569855] ? deactivate_super+0x5e/0x80
[ 556.570668] ? cleanup_mnt+0x61/0xa0
[ 556.571395] ? __cleanup_mnt+0x12/0x20
[ 556.572156] ? task_work_run+0xc8/0xf0
[ 556.572917] ? exit_to_usermode_loop+0x125/0x130
[ 556.573861] rewind_stack_do_exit+0x17/0x20
[ 556.574707] RIP: 0033:0x7f8028b77487
[ 556.575428] Code: Bad RIP value.
[ 556.576106] RSP: 002b:
00007fff9f2e3598 EFLAGS:
00000246 ORIG_RAX:
00000000000000a6
[ 556.577599] RAX:
0000000000000000 RBX:
0000000000ebd030 RCX:
00007f8028b77487
[ 556.579020] RDX:
0000000000000001 RSI:
0000000000000000 RDI:
0000000000ec41e0
[ 556.580422] RBP:
0000000000ec41e0 R08:
0000000000000000 R09:
0000000000000014
[ 556.581833] R10:
00000000000006b2 R11:
0000000000000246 R12:
00007f802908083c
[ 556.583252] R13:
0000000000000000 R14:
0000000000ebd210 R15:
00007fff9f2e3820
[ 556.584983] The buggy address belongs to the page:
[ 556.585961] page:
ffffea0007ca4bc0 count:0 mapcount:0 mapping:
0000000000000000 index:0x0
[ 556.587540] flags: 0x2ffff0000000000()
[ 556.588296] raw:
02ffff0000000000 0000000000000000 dead000000000200 0000000000000000
[ 556.589822] raw:
0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 556.591359] page dumped because: kasan: bad access detected
[ 556.592786] Memory state around the buggy address:
[ 556.593753]
ffff8801f292fc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 556.595191]
ffff8801f292fc80: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00
[ 556.596613] >
ffff8801f292fd00: 00 00 f3 00 00 00 00 f3 f3 00 00 00 00 f4 f4 f4
[ 556.598044] ^
[ 556.598797]
ffff8801f292fd80: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00
[ 556.600225]
ffff8801f292fe00: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 f4 f4 f4
[ 556.601647] ==================================================================
- Location
https://elixir.bootlin.com/linux/v4.18-rc1/source/fs/f2fs/node.c#L987
case NODE_DIND_BLOCK:
err = truncate_nodes(&dn, nofs, offset[1], 3);
cont = 0;
break;
default:
BUG(); <---
}
Reported-by Wen Xu <wen.xu@gatech.edu>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Yunlei He [Wed, 27 Jun 2018 06:46:21 +0000 (14:46 +0800)]
f2fs: Allocate and stat mem used by free nid bitmap more accurately
This patch used f2fs_bitmap_size macro to calculate mem used by
free nid bitmap, and stat used mem including aligned part.
Signed-off-by: Yunlei He <heyunlei@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Wed, 27 Jun 2018 10:05:54 +0000 (18:05 +0800)]
f2fs: fix to do sanity check with user_block_count
This patch fixs to do sanity check with user_block_count.
- Overview
Divide zero in utilization when mount() a corrupted f2fs image
- Reproduce (4.18 upstream kernel)
- Kernel message
[ 564.099503] F2FS-fs (loop0): invalid crc value
[ 564.101991] divide error: 0000 [#1] SMP KASAN PTI
[ 564.103103] CPU: 1 PID: 1298 Comm: f2fs_discard-7: Not tainted 4.18.0-rc1+ #4
[ 564.104584] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 564.106624] RIP: 0010:issue_discard_thread+0x248/0x5c0
[ 564.107692] Code: ff ff 48 8b bd e8 fe ff ff 41 8b 9d 4c 04 00 00 e8 cd b8 ad ff 41 8b 85 50 04 00 00 31 d2 48 8d 04 80 48 8d 04 80 48 c1 e0 02 <48> f7 f3 83 f8 50 7e 16 41 c7 86 7c ff ff ff 01 00 00 00 41 c7 86
[ 564.111686] RSP: 0018:
ffff8801f3117dc0 EFLAGS:
00010206
[ 564.112775] RAX:
0000000000000384 RBX:
0000000000000000 RCX:
ffffffffb88c1e03
[ 564.114250] RDX:
0000000000000000 RSI:
dffffc0000000000 RDI:
ffff8801e3aa4850
[ 564.115706] RBP:
ffff8801f3117f00 R08:
1ffffffff751a1d0 R09:
fffffbfff751a1d0
[ 564.117177] R10:
0000000000000001 R11:
fffffbfff751a1d0 R12:
00000000fffffffc
[ 564.118634] R13:
ffff8801e3aa4400 R14:
ffff8801f3117ed8 R15:
ffff8801e2050000
[ 564.120094] FS:
0000000000000000(0000) GS:
ffff8801f6f00000(0000) knlGS:
0000000000000000
[ 564.121748] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 564.122923] CR2:
000000000202b078 CR3:
00000001f11ac000 CR4:
00000000000006e0
[ 564.124383] Call Trace:
[ 564.124924] ? __issue_discard_cmd+0x480/0x480
[ 564.125882] ? __sched_text_start+0x8/0x8
[ 564.126756] ? __kthread_parkme+0xcb/0x100
[ 564.127620] ? kthread_blkcg+0x70/0x70
[ 564.128412] kthread+0x180/0x1d0
[ 564.129105] ? __issue_discard_cmd+0x480/0x480
[ 564.130029] ? kthread_associate_blkcg+0x150/0x150
[ 564.131033] ret_from_fork+0x35/0x40
[ 564.131794] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd mac_hid i2c_piix4 soundcore ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid0 multipath linear 8139too crct10dif_pclmul crc32_pclmul qxl drm_kms_helper syscopyarea aesni_intel sysfillrect sysimgblt fb_sys_fops ttm drm aes_x86_64 crypto_simd cryptd 8139cp glue_helper mii pata_acpi floppy
[ 564.141798] ---[ end trace
4ce02f25ff7d3df5 ]---
[ 564.142773] RIP: 0010:issue_discard_thread+0x248/0x5c0
[ 564.143885] Code: ff ff 48 8b bd e8 fe ff ff 41 8b 9d 4c 04 00 00 e8 cd b8 ad ff 41 8b 85 50 04 00 00 31 d2 48 8d 04 80 48 8d 04 80 48 c1 e0 02 <48> f7 f3 83 f8 50 7e 16 41 c7 86 7c ff ff ff 01 00 00 00 41 c7 86
[ 564.147776] RSP: 0018:
ffff8801f3117dc0 EFLAGS:
00010206
[ 564.148856] RAX:
0000000000000384 RBX:
0000000000000000 RCX:
ffffffffb88c1e03
[ 564.150424] RDX:
0000000000000000 RSI:
dffffc0000000000 RDI:
ffff8801e3aa4850
[ 564.151906] RBP:
ffff8801f3117f00 R08:
1ffffffff751a1d0 R09:
fffffbfff751a1d0
[ 564.153463] R10:
0000000000000001 R11:
fffffbfff751a1d0 R12:
00000000fffffffc
[ 564.154915] R13:
ffff8801e3aa4400 R14:
ffff8801f3117ed8 R15:
ffff8801e2050000
[ 564.156405] FS:
0000000000000000(0000) GS:
ffff8801f6f00000(0000) knlGS:
0000000000000000
[ 564.158070] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 564.159279] CR2:
000000000202b078 CR3:
00000001f11ac000 CR4:
00000000000006e0
[ 564.161043] ==================================================================
[ 564.162587] BUG: KASAN: stack-out-of-bounds in from_kuid_munged+0x1d/0x50
[ 564.163994] Read of size 4 at addr
ffff8801f3117c84 by task f2fs_discard-7:/1298
[ 564.165852] CPU: 1 PID: 1298 Comm: f2fs_discard-7: Tainted: G D 4.18.0-rc1+ #4
[ 564.167593] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 564.169522] Call Trace:
[ 564.170057] dump_stack+0x7b/0xb5
[ 564.170778] print_address_description+0x70/0x290
[ 564.171765] kasan_report+0x291/0x390
[ 564.172540] ? from_kuid_munged+0x1d/0x50
[ 564.173408] __asan_load4+0x78/0x80
[ 564.174148] from_kuid_munged+0x1d/0x50
[ 564.174962] do_notify_parent+0x1f5/0x4f0
[ 564.175808] ? send_sigqueue+0x390/0x390
[ 564.176639] ? css_set_move_task+0x152/0x340
[ 564.184197] do_exit+0x1290/0x1390
[ 564.184950] ? __issue_discard_cmd+0x480/0x480
[ 564.185884] ? mm_update_next_owner+0x380/0x380
[ 564.186829] ? __sched_text_start+0x8/0x8
[ 564.187672] ? __kthread_parkme+0xcb/0x100
[ 564.188528] ? kthread_blkcg+0x70/0x70
[ 564.189333] ? kthread+0x180/0x1d0
[ 564.190052] ? __issue_discard_cmd+0x480/0x480
[ 564.190983] rewind_stack_do_exit+0x17/0x20
[ 564.192190] The buggy address belongs to the page:
[ 564.193213] page:
ffffea0007cc45c0 count:0 mapcount:0 mapping:
0000000000000000 index:0x0
[ 564.194856] flags: 0x2ffff0000000000()
[ 564.195644] raw:
02ffff0000000000 0000000000000000 dead000000000200 0000000000000000
[ 564.197247] raw:
0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 564.198826] page dumped because: kasan: bad access detected
[ 564.200299] Memory state around the buggy address:
[ 564.201306]
ffff8801f3117b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 564.202779]
ffff8801f3117c00: 00 00 00 00 00 00 00 00 00 00 00 f3 f3 f3 f3 f3
[ 564.204252] >
ffff8801f3117c80: f3 f3 f3 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
[ 564.205742] ^
[ 564.206424]
ffff8801f3117d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 564.207908]
ffff8801f3117d80: f3 f3 f3 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00
[ 564.209389] ==================================================================
[ 564.231795] F2FS-fs (loop0): Mounted with checkpoint version = 2
- Location
https://elixir.bootlin.com/linux/v4.18-rc1/source/fs/f2fs/segment.h#L586
return div_u64((u64)valid_user_blocks(sbi) * 100,
sbi->user_block_count);
Missing checks on sbi->user_block_count.
Reported-by: Wen Xu <wen.xu@gatech.edu>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Mon, 25 Jun 2018 15:29:49 +0000 (23:29 +0800)]
f2fs: fix to do sanity check with extra_attr feature
If FI_EXTRA_ATTR is set in inode by fuzzing, inode.i_addr[0] will be
parsed as inode.i_extra_isize, then in __recover_inline_status, inline
data address will beyond boundary of page, result in accessing invalid
memory.
So in this condition, during reading inode page, let's do sanity check
with EXTRA_ATTR feature of fs and extra_attr bit of inode, if they're
inconsistent, deny to load this inode.
- Overview
Out-of-bound access in f2fs_iget() when mounting a corrupted f2fs image
- Reproduce
The following message will be got in KASAN build of 4.18 upstream kernel.
[ 819.392227] ==================================================================
[ 819.393901] BUG: KASAN: slab-out-of-bounds in f2fs_iget+0x736/0x1530
[ 819.395329] Read of size 4 at addr
ffff8801f099c968 by task mount/1292
[ 819.397079] CPU: 1 PID: 1292 Comm: mount Not tainted 4.18.0-rc1+ #4
[ 819.397082] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 819.397088] Call Trace:
[ 819.397124] dump_stack+0x7b/0xb5
[ 819.397154] print_address_description+0x70/0x290
[ 819.397159] kasan_report+0x291/0x390
[ 819.397163] ? f2fs_iget+0x736/0x1530
[ 819.397176] check_memory_region+0x139/0x190
[ 819.397182] __asan_loadN+0xf/0x20
[ 819.397185] f2fs_iget+0x736/0x1530
[ 819.397197] f2fs_fill_super+0x1b4f/0x2b40
[ 819.397202] ? f2fs_fill_super+0x1b4f/0x2b40
[ 819.397208] ? f2fs_commit_super+0x1b0/0x1b0
[ 819.397227] ? set_blocksize+0x90/0x140
[ 819.397241] mount_bdev+0x1c5/0x210
[ 819.397245] ? f2fs_commit_super+0x1b0/0x1b0
[ 819.397252] f2fs_mount+0x15/0x20
[ 819.397256] mount_fs+0x60/0x1a0
[ 819.397267] ? alloc_vfsmnt+0x309/0x360
[ 819.397272] vfs_kern_mount+0x6b/0x1a0
[ 819.397282] do_mount+0x34a/0x18c0
[ 819.397300] ? lockref_put_or_lock+0xcf/0x160
[ 819.397306] ? copy_mount_string+0x20/0x20
[ 819.397318] ? memcg_kmem_put_cache+0x1b/0xa0
[ 819.397324] ? kasan_check_write+0x14/0x20
[ 819.397334] ? _copy_from_user+0x6a/0x90
[ 819.397353] ? memdup_user+0x42/0x60
[ 819.397359] ksys_mount+0x83/0xd0
[ 819.397365] __x64_sys_mount+0x67/0x80
[ 819.397388] do_syscall_64+0x78/0x170
[ 819.397403] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 819.397422] RIP: 0033:0x7f54c667cb9a
[ 819.397424] Code: 48 8b 0d 01 c3 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d ce c2 2b 00 f7 d8 64 89 01 48
[ 819.397483] RSP: 002b:
00007ffd8f46cd08 EFLAGS:
00000202 ORIG_RAX:
00000000000000a5
[ 819.397496] RAX:
ffffffffffffffda RBX:
0000000000dfa030 RCX:
00007f54c667cb9a
[ 819.397498] RDX:
0000000000dfa210 RSI:
0000000000dfbf30 RDI:
0000000000e02ec0
[ 819.397501] RBP:
0000000000000000 R08:
0000000000000000 R09:
0000000000000013
[ 819.397503] R10:
00000000c0ed0000 R11:
0000000000000202 R12:
0000000000e02ec0
[ 819.397505] R13:
0000000000dfa210 R14:
0000000000000000 R15:
0000000000000003
[ 819.397866] Allocated by task 139:
[ 819.398702] save_stack+0x46/0xd0
[ 819.398705] kasan_kmalloc+0xad/0xe0
[ 819.398709] kasan_slab_alloc+0x11/0x20
[ 819.398713] kmem_cache_alloc+0xd1/0x1e0
[ 819.398717] dup_fd+0x50/0x4c0
[ 819.398740] copy_process.part.37+0xbed/0x32e0
[ 819.398744] _do_fork+0x16e/0x590
[ 819.398748] __x64_sys_clone+0x69/0x80
[ 819.398752] do_syscall_64+0x78/0x170
[ 819.398756] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 819.399097] Freed by task 159:
[ 819.399743] save_stack+0x46/0xd0
[ 819.399747] __kasan_slab_free+0x13c/0x1a0
[ 819.399750] kasan_slab_free+0xe/0x10
[ 819.399754] kmem_cache_free+0x89/0x1e0
[ 819.399757] put_files_struct+0x132/0x150
[ 819.399761] exit_files+0x62/0x70
[ 819.399766] do_exit+0x47b/0x1390
[ 819.399770] do_group_exit+0x86/0x130
[ 819.399774] __x64_sys_exit_group+0x2c/0x30
[ 819.399778] do_syscall_64+0x78/0x170
[ 819.399782] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 819.400115] The buggy address belongs to the object at
ffff8801f099c680
which belongs to the cache files_cache of size 704
[ 819.403234] The buggy address is located 40 bytes to the right of
704-byte region [
ffff8801f099c680,
ffff8801f099c940)
[ 819.405689] The buggy address belongs to the page:
[ 819.406709] page:
ffffea0007c26700 count:1 mapcount:0 mapping:
ffff8801f69a3340 index:0xffff8801f099d380 compound_mapcount: 0
[ 819.408984] flags: 0x2ffff0000008100(slab|head)
[ 819.409932] raw:
02ffff0000008100 ffffea00077fb600 0000000200000002 ffff8801f69a3340
[ 819.411514] raw:
ffff8801f099d380 0000000080130000 00000001ffffffff 0000000000000000
[ 819.413073] page dumped because: kasan: bad access detected
[ 819.414539] Memory state around the buggy address:
[ 819.415521]
ffff8801f099c800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 819.416981]
ffff8801f099c880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 819.418454] >
ffff8801f099c900: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[ 819.419921] ^
[ 819.421265]
ffff8801f099c980: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
[ 819.422745]
ffff8801f099ca00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 819.424206] ==================================================================
[ 819.425668] Disabling lock debugging due to kernel taint
[ 819.457463] F2FS-fs (loop0): Mounted with checkpoint version = 3
The kernel still mounts the image. If you run the following program on the mounted folder mnt,
(poc.c)
static void activity(char *mpoint) {
char *foo_bar_baz;
int err;
static int buf[8192];
memset(buf, 0, sizeof(buf));
err = asprintf(&foo_bar_baz, "%s/foo/bar/baz", mpoint);
int fd = open(foo_bar_baz, O_RDONLY, 0);
if (fd >= 0) {
read(fd, (char *)buf, 11);
close(fd);
}
}
int main(int argc, char *argv[]) {
activity(argv[1]);
return 0;
}
You can get kernel crash:
[ 819.457463] F2FS-fs (loop0): Mounted with checkpoint version = 3
[ 918.028501] BUG: unable to handle kernel paging request at
ffffed0048000d82
[ 918.044020] PGD
23ffee067 P4D
23ffee067 PUD
23fbef067 PMD 0
[ 918.045207] Oops: 0000 [#1] SMP KASAN PTI
[ 918.046048] CPU: 0 PID: 1309 Comm: poc Tainted: G B 4.18.0-rc1+ #4
[ 918.047573] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 918.049552] RIP: 0010:check_memory_region+0x5e/0x190
[ 918.050565] Code: f8 49 c1 e8 03 49 89 db 49 c1 eb 03 4d 01 cb 4d 01 c1 4d 8d 63 01 4c 89 c8 4d 89 e2 4d 29 ca 49 83 fa 10 7f 3d 4d 85 d2 74 32 <41> 80 39 00 75 23 48 b8 01 00 00 00 00 fc ff df 4d 01 d1 49 01 c0
[ 918.054322] RSP: 0018:
ffff8801e3a1f258 EFLAGS:
00010202
[ 918.055400] RAX:
ffffed0048000d82 RBX:
ffff880240006c11 RCX:
ffffffffb8867d14
[ 918.056832] RDX:
0000000000000000 RSI:
0000000000000002 RDI:
ffff880240006c10
[ 918.058253] RBP:
ffff8801e3a1f268 R08:
1ffff10048000d82 R09:
ffffed0048000d82
[ 918.059717] R10:
0000000000000001 R11:
ffffed0048000d82 R12:
ffffed0048000d83
[ 918.061159] R13:
ffff8801e3a1f390 R14:
0000000000000000 R15:
ffff880240006c08
[ 918.062614] FS:
00007fac9732c700(0000) GS:
ffff8801f6e00000(0000) knlGS:
0000000000000000
[ 918.064246] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 918.065412] CR2:
ffffed0048000d82 CR3:
00000001df77a000 CR4:
00000000000006f0
[ 918.066882] Call Trace:
[ 918.067410] __asan_loadN+0xf/0x20
[ 918.068149] f2fs_find_target_dentry+0xf4/0x270
[ 918.069083] ? __get_node_page+0x331/0x5b0
[ 918.069925] f2fs_find_in_inline_dir+0x24b/0x310
[ 918.070881] ? f2fs_recover_inline_data+0x4c0/0x4c0
[ 918.071905] ? unwind_next_frame.part.5+0x34f/0x490
[ 918.072901] ? unwind_dump+0x290/0x290
[ 918.073695] ? is_bpf_text_address+0xe/0x20
[ 918.074566] __f2fs_find_entry+0x599/0x670
[ 918.075408] ? kasan_unpoison_shadow+0x36/0x50
[ 918.076315] ? kasan_kmalloc+0xad/0xe0
[ 918.077100] ? memcg_kmem_put_cache+0x55/0xa0
[ 918.077998] ? f2fs_find_target_dentry+0x270/0x270
[ 918.079006] ? d_set_d_op+0x30/0x100
[ 918.079749] ? __d_lookup_rcu+0x69/0x2e0
[ 918.080556] ? __d_alloc+0x275/0x450
[ 918.081297] ? kasan_check_write+0x14/0x20
[ 918.082135] ? memset+0x31/0x40
[ 918.082820] ? fscrypt_setup_filename+0x1ec/0x4c0
[ 918.083782] ? d_alloc_parallel+0x5bb/0x8c0
[ 918.084640] f2fs_find_entry+0xe9/0x110
[ 918.085432] ? __f2fs_find_entry+0x670/0x670
[ 918.086308] ? kasan_check_write+0x14/0x20
[ 918.087163] f2fs_lookup+0x297/0x590
[ 918.087902] ? f2fs_link+0x2b0/0x2b0
[ 918.088646] ? legitimize_path.isra.29+0x61/0xa0
[ 918.089589] __lookup_slow+0x12e/0x240
[ 918.090371] ? may_delete+0x2b0/0x2b0
[ 918.091123] ? __nd_alloc_stack+0xa0/0xa0
[ 918.091944] lookup_slow+0x44/0x60
[ 918.092642] walk_component+0x3ee/0xa40
[ 918.093428] ? is_bpf_text_address+0xe/0x20
[ 918.094283] ? pick_link+0x3e0/0x3e0
[ 918.095047] ? in_group_p+0xa5/0xe0
[ 918.095771] ? generic_permission+0x53/0x1e0
[ 918.096666] ? security_inode_permission+0x1d/0x70
[ 918.097646] ? inode_permission+0x7a/0x1f0
[ 918.098497] link_path_walk+0x2a2/0x7b0
[ 918.099298] ? apparmor_capget+0x3d0/0x3d0
[ 918.100140] ? walk_component+0xa40/0xa40
[ 918.100958] ? path_init+0x2e6/0x580
[ 918.101695] path_openat+0x1bb/0x2160
[ 918.102471] ? __save_stack_trace+0x92/0x100
[ 918.103352] ? save_stack+0xb5/0xd0
[ 918.104070] ? vfs_unlink+0x250/0x250
[ 918.104822] ? save_stack+0x46/0xd0
[ 918.105538] ? kasan_slab_alloc+0x11/0x20
[ 918.106370] ? kmem_cache_alloc+0xd1/0x1e0
[ 918.107213] ? getname_flags+0x76/0x2c0
[ 918.107997] ? getname+0x12/0x20
[ 918.108677] ? do_sys_open+0x14b/0x2c0
[ 918.109450] ? __x64_sys_open+0x4c/0x60
[ 918.110255] ? do_syscall_64+0x78/0x170
[ 918.111083] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 918.112148] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 918.113204] ? f2fs_empty_inline_dir+0x1e0/0x1e0
[ 918.114150] ? timespec64_trunc+0x5c/0x90
[ 918.114993] ? wb_io_lists_depopulated+0x1a/0xc0
[ 918.115937] ? inode_io_list_move_locked+0x102/0x110
[ 918.116949] do_filp_open+0x12b/0x1d0
[ 918.117709] ? may_open_dev+0x50/0x50
[ 918.118475] ? kasan_kmalloc+0xad/0xe0
[ 918.119246] do_sys_open+0x17c/0x2c0
[ 918.119983] ? do_sys_open+0x17c/0x2c0
[ 918.120751] ? filp_open+0x60/0x60
[ 918.121463] ? task_work_run+0x4d/0xf0
[ 918.122237] __x64_sys_open+0x4c/0x60
[ 918.123001] do_syscall_64+0x78/0x170
[ 918.123759] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 918.124802] RIP: 0033:0x7fac96e3e040
[ 918.125537] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 09 27 2d 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 7e e0 01 00 48 89 04 24
[ 918.129341] RSP: 002b:
00007fff1b37f848 EFLAGS:
00000246 ORIG_RAX:
0000000000000002
[ 918.130870] RAX:
ffffffffffffffda RBX:
0000000000000000 RCX:
00007fac96e3e040
[ 918.132295] RDX:
0000000000000000 RSI:
0000000000000000 RDI:
000000000122d080
[ 918.133748] RBP:
00007fff1b37f9b0 R08:
00007fac9710bbd8 R09:
0000000000000001
[ 918.135209] R10:
000000000000069d R11:
0000000000000246 R12:
0000000000400c20
[ 918.136650] R13:
00007fff1b37fab0 R14:
0000000000000000 R15:
0000000000000000
[ 918.138093] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd mac_hid i2c_piix4 soundcore ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid0 multipath linear 8139too crct10dif_pclmul crc32_pclmul qxl drm_kms_helper syscopyarea aesni_intel sysfillrect sysimgblt fb_sys_fops ttm drm aes_x86_64 crypto_simd cryptd 8139cp glue_helper mii pata_acpi floppy
[ 918.147924] CR2:
ffffed0048000d82
[ 918.148619] ---[ end trace
4ce02f25ff7d3df5 ]---
[ 918.149563] RIP: 0010:check_memory_region+0x5e/0x190
[ 918.150576] Code: f8 49 c1 e8 03 49 89 db 49 c1 eb 03 4d 01 cb 4d 01 c1 4d 8d 63 01 4c 89 c8 4d 89 e2 4d 29 ca 49 83 fa 10 7f 3d 4d 85 d2 74 32 <41> 80 39 00 75 23 48 b8 01 00 00 00 00 fc ff df 4d 01 d1 49 01 c0
[ 918.154360] RSP: 0018:
ffff8801e3a1f258 EFLAGS:
00010202
[ 918.155411] RAX:
ffffed0048000d82 RBX:
ffff880240006c11 RCX:
ffffffffb8867d14
[ 918.156833] RDX:
0000000000000000 RSI:
0000000000000002 RDI:
ffff880240006c10
[ 918.158257] RBP:
ffff8801e3a1f268 R08:
1ffff10048000d82 R09:
ffffed0048000d82
[ 918.159722] R10:
0000000000000001 R11:
ffffed0048000d82 R12:
ffffed0048000d83
[ 918.161149] R13:
ffff8801e3a1f390 R14:
0000000000000000 R15:
ffff880240006c08
[ 918.162587] FS:
00007fac9732c700(0000) GS:
ffff8801f6e00000(0000) knlGS:
0000000000000000
[ 918.164203] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 918.165356] CR2:
ffffed0048000d82 CR3:
00000001df77a000 CR4:
00000000000006f0
Reported-by: Wen Xu <wen.xu@gatech.edu>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Mon, 25 Jun 2018 12:33:24 +0000 (20:33 +0800)]
f2fs: fix to correct return value of f2fs_trim_fs
We should account trimmed block number from __wait_all_discard_cmd
in __issue_discard_cmd_range, otherwise trimmed blocks returned
by f2fs_trim_fs will be wrong, this patch fixes it.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Sat, 23 Jun 2018 03:25:19 +0000 (11:25 +0800)]
f2fs: fix to do sanity check with {sit,nat}_ver_bitmap_bytesize
This patch adds to do sanity check with {sit,nat}_ver_bitmap_bytesize
during mount, in order to avoid accessing across cache boundary with
this abnormal bitmap size.
- Overview
buffer overrun in build_sit_info() when mounting a crafted f2fs image
- Reproduce
- Kernel message
[ 548.580867] F2FS-fs (loop0): Invalid log blocks per segment (8201)
[ 548.580877] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[ 548.584979] ==================================================================
[ 548.586568] BUG: KASAN: use-after-free in kmemdup+0x36/0x50
[ 548.587715] Read of size 64 at addr
ffff8801e9c265ff by task mount/1295
[ 548.589428] CPU: 1 PID: 1295 Comm: mount Not tainted 4.18.0-rc1+ #4
[ 548.589432] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 548.589438] Call Trace:
[ 548.589474] dump_stack+0x7b/0xb5
[ 548.589487] print_address_description+0x70/0x290
[ 548.589492] kasan_report+0x291/0x390
[ 548.589496] ? kmemdup+0x36/0x50
[ 548.589509] check_memory_region+0x139/0x190
[ 548.589514] memcpy+0x23/0x50
[ 548.589518] kmemdup+0x36/0x50
[ 548.589545] f2fs_build_segment_manager+0x8fa/0x3410
[ 548.589551] ? __asan_loadN+0xf/0x20
[ 548.589560] ? f2fs_sanity_check_ckpt+0x1be/0x240
[ 548.589566] ? f2fs_flush_sit_entries+0x10c0/0x10c0
[ 548.589587] ? __put_user_ns+0x40/0x40
[ 548.589604] ? find_next_bit+0x57/0x90
[ 548.589610] f2fs_fill_super+0x194b/0x2b40
[ 548.589617] ? f2fs_commit_super+0x1b0/0x1b0
[ 548.589637] ? set_blocksize+0x90/0x140
[ 548.589651] mount_bdev+0x1c5/0x210
[ 548.589655] ? f2fs_commit_super+0x1b0/0x1b0
[ 548.589667] f2fs_mount+0x15/0x20
[ 548.589672] mount_fs+0x60/0x1a0
[ 548.589683] ? alloc_vfsmnt+0x309/0x360
[ 548.589688] vfs_kern_mount+0x6b/0x1a0
[ 548.589699] do_mount+0x34a/0x18c0
[ 548.589710] ? lockref_put_or_lock+0xcf/0x160
[ 548.589716] ? copy_mount_string+0x20/0x20
[ 548.589728] ? memcg_kmem_put_cache+0x1b/0xa0
[ 548.589734] ? kasan_check_write+0x14/0x20
[ 548.589740] ? _copy_from_user+0x6a/0x90
[ 548.589744] ? memdup_user+0x42/0x60
[ 548.589750] ksys_mount+0x83/0xd0
[ 548.589755] __x64_sys_mount+0x67/0x80
[ 548.589781] do_syscall_64+0x78/0x170
[ 548.589797] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 548.589820] RIP: 0033:0x7f76fc331b9a
[ 548.589821] Code: 48 8b 0d 01 c3 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d ce c2 2b 00 f7 d8 64 89 01 48
[ 548.589880] RSP: 002b:
00007ffd4f0a0e48 EFLAGS:
00000206 ORIG_RAX:
00000000000000a5
[ 548.589890] RAX:
ffffffffffffffda RBX:
000000000146c030 RCX:
00007f76fc331b9a
[ 548.589892] RDX:
000000000146c210 RSI:
000000000146df30 RDI:
0000000001474ec0
[ 548.589895] RBP:
0000000000000000 R08:
0000000000000000 R09:
0000000000000013
[ 548.589897] R10:
00000000c0ed0000 R11:
0000000000000206 R12:
0000000001474ec0
[ 548.589900] R13:
000000000146c210 R14:
0000000000000000 R15:
0000000000000003
[ 548.590242] The buggy address belongs to the page:
[ 548.591243] page:
ffffea0007a70980 count:0 mapcount:0 mapping:
0000000000000000 index:0x0
[ 548.592886] flags: 0x2ffff0000000000()
[ 548.593665] raw:
02ffff0000000000 dead000000000100 dead000000000200 0000000000000000
[ 548.595258] raw:
0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 548.603713] page dumped because: kasan: bad access detected
[ 548.605203] Memory state around the buggy address:
[ 548.606198]
ffff8801e9c26480: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 548.607676]
ffff8801e9c26500: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 548.609157] >
ffff8801e9c26580: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 548.610629] ^
[ 548.612088]
ffff8801e9c26600: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 548.613674]
ffff8801e9c26680: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 548.615141] ==================================================================
[ 548.616613] Disabling lock debugging due to kernel taint
[ 548.622871] WARNING: CPU: 1 PID: 1295 at mm/page_alloc.c:4065 __alloc_pages_slowpath+0xe4a/0x1420
[ 548.622878] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd mac_hid i2c_piix4 soundcore ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid0 multipath linear 8139too crct10dif_pclmul crc32_pclmul qxl drm_kms_helper syscopyarea aesni_intel sysfillrect sysimgblt fb_sys_fops ttm drm aes_x86_64 crypto_simd cryptd 8139cp glue_helper mii pata_acpi floppy
[ 548.623217] CPU: 1 PID: 1295 Comm: mount Tainted: G B 4.18.0-rc1+ #4
[ 548.623219] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 548.623226] RIP: 0010:__alloc_pages_slowpath+0xe4a/0x1420
[ 548.623227] Code: ff ff 01 89 85 c8 fe ff ff e9 91 fc ff ff 41 89 c5 e9 5c fc ff ff 0f 0b 89 f8 25 ff ff f7 ff 89 85 8c fe ff ff e9 d5 f2 ff ff <0f> 0b e9 65 f2 ff ff 65 8b 05 38 81 d2 47 f6 c4 01 74 1c 65 48 8b
[ 548.623281] RSP: 0018:
ffff8801f28c7678 EFLAGS:
00010246
[ 548.623284] RAX:
0000000000000000 RBX:
00000000006040c0 RCX:
ffffffffb82f73b7
[ 548.623287] RDX:
1ffff1003e518eeb RSI:
000000000000000c RDI:
0000000000000000
[ 548.623290] RBP:
ffff8801f28c7880 R08:
0000000000000000 R09:
ffffed0047fff2c5
[ 548.623292] R10:
0000000000000001 R11:
ffffed0047fff2c4 R12:
ffff8801e88de040
[ 548.623295] R13:
00000000006040c0 R14:
000000000000000c R15:
ffff8801f28c7938
[ 548.623299] FS:
00007f76fca51840(0000) GS:
ffff8801f6f00000(0000) knlGS:
0000000000000000
[ 548.623302] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 548.623304] CR2:
00007f19b9171760 CR3:
00000001ed952000 CR4:
00000000000006e0
[ 548.623317] Call Trace:
[ 548.623325] ? kasan_check_read+0x11/0x20
[ 548.623330] ? __zone_watermark_ok+0x92/0x240
[ 548.623336] ? get_page_from_freelist+0x1c3/0x1d90
[ 548.623347] ? _raw_spin_lock_irqsave+0x2a/0x60
[ 548.623353] ? warn_alloc+0x250/0x250
[ 548.623358] ? save_stack+0x46/0xd0
[ 548.623361] ? kasan_kmalloc+0xad/0xe0
[ 548.623366] ? __isolate_free_page+0x2a0/0x2a0
[ 548.623370] ? mount_fs+0x60/0x1a0
[ 548.623374] ? vfs_kern_mount+0x6b/0x1a0
[ 548.623378] ? do_mount+0x34a/0x18c0
[ 548.623383] ? ksys_mount+0x83/0xd0
[ 548.623387] ? __x64_sys_mount+0x67/0x80
[ 548.623391] ? do_syscall_64+0x78/0x170
[ 548.623396] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 548.623401] __alloc_pages_nodemask+0x3c5/0x400
[ 548.623407] ? __alloc_pages_slowpath+0x1420/0x1420
[ 548.623412] ? __mutex_lock_slowpath+0x20/0x20
[ 548.623417] ? kvmalloc_node+0x31/0x80
[ 548.623424] alloc_pages_current+0x75/0x110
[ 548.623436] kmalloc_order+0x24/0x60
[ 548.623442] kmalloc_order_trace+0x24/0xb0
[ 548.623448] __kmalloc_track_caller+0x207/0x220
[ 548.623455] ? f2fs_build_node_manager+0x399/0xbb0
[ 548.623460] kmemdup+0x20/0x50
[ 548.623465] f2fs_build_node_manager+0x399/0xbb0
[ 548.623470] f2fs_fill_super+0x195e/0x2b40
[ 548.623477] ? f2fs_commit_super+0x1b0/0x1b0
[ 548.623481] ? set_blocksize+0x90/0x140
[ 548.623486] mount_bdev+0x1c5/0x210
[ 548.623489] ? f2fs_commit_super+0x1b0/0x1b0
[ 548.623495] f2fs_mount+0x15/0x20
[ 548.623498] mount_fs+0x60/0x1a0
[ 548.623503] ? alloc_vfsmnt+0x309/0x360
[ 548.623508] vfs_kern_mount+0x6b/0x1a0
[ 548.623513] do_mount+0x34a/0x18c0
[ 548.623518] ? lockref_put_or_lock+0xcf/0x160
[ 548.623523] ? copy_mount_string+0x20/0x20
[ 548.623528] ? memcg_kmem_put_cache+0x1b/0xa0
[ 548.623533] ? kasan_check_write+0x14/0x20
[ 548.623537] ? _copy_from_user+0x6a/0x90
[ 548.623542] ? memdup_user+0x42/0x60
[ 548.623547] ksys_mount+0x83/0xd0
[ 548.623552] __x64_sys_mount+0x67/0x80
[ 548.623557] do_syscall_64+0x78/0x170
[ 548.623562] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 548.623566] RIP: 0033:0x7f76fc331b9a
[ 548.623567] Code: 48 8b 0d 01 c3 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d ce c2 2b 00 f7 d8 64 89 01 48
[ 548.623632] RSP: 002b:
00007ffd4f0a0e48 EFLAGS:
00000206 ORIG_RAX:
00000000000000a5
[ 548.623636] RAX:
ffffffffffffffda RBX:
000000000146c030 RCX:
00007f76fc331b9a
[ 548.623639] RDX:
000000000146c210 RSI:
000000000146df30 RDI:
0000000001474ec0
[ 548.623641] RBP:
0000000000000000 R08:
0000000000000000 R09:
0000000000000013
[ 548.623643] R10:
00000000c0ed0000 R11:
0000000000000206 R12:
0000000001474ec0
[ 548.623646] R13:
000000000146c210 R14:
0000000000000000 R15:
0000000000000003
[ 548.623650] ---[ end trace
4ce02f25ff7d3df5 ]---
[ 548.623656] F2FS-fs (loop0): Failed to initialize F2FS node manager
[ 548.627936] F2FS-fs (loop0): Invalid log blocks per segment (8201)
[ 548.627940] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[ 548.635835] F2FS-fs (loop0): Failed to initialize F2FS node manager
- Location
https://elixir.bootlin.com/linux/v4.18-rc1/source/fs/f2fs/segment.c#L3578
sit_i->sit_bitmap = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL);
Buffer overrun happens when doing memcpy. I suspect there is missing (inconsistent) checks on bitmap_size.
Reported by Wen Xu (wen.xu@gatech.edu) from SSLab, Gatech.
Reported-by: Wen Xu <wen.xu@gatech.edu>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Fri, 22 Jun 2018 16:12:36 +0000 (00:12 +0800)]
f2fs: fix to do sanity check with secs_per_zone
As Wen Xu reported in below link:
https://bugzilla.kernel.org/show_bug.cgi?id=200183
- Overview
Divide zero in reset_curseg() when mounting a crafted f2fs image
- Reproduce
- Kernel message
[ 588.281510] divide error: 0000 [#1] SMP KASAN PTI
[ 588.282701] CPU: 0 PID: 1293 Comm: mount Not tainted 4.18.0-rc1+ #4
[ 588.284000] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 588.286178] RIP: 0010:reset_curseg+0x94/0x1a0
[ 588.298166] RSP: 0018:
ffff8801e88d7940 EFLAGS:
00010246
[ 588.299360] RAX:
0000000000000014 RBX:
ffff8801e1d46d00 RCX:
ffffffffb88bf60b
[ 588.300809] RDX:
0000000000000000 RSI:
dffffc0000000000 RDI:
ffff8801e1d46d64
[ 588.305272] R13:
0000000000000000 R14:
0000000000000014 R15:
0000000000000000
[ 588.306822] FS:
00007fad85008840(0000) GS:
ffff8801f6e00000(0000) knlGS:
0000000000000000
[ 588.308456] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 588.309623] CR2:
0000000001705078 CR3:
00000001f30f8000 CR4:
00000000000006f0
[ 588.311085] Call Trace:
[ 588.311637] f2fs_build_segment_manager+0x103f/0x3410
[ 588.316136] ? f2fs_commit_super+0x1b0/0x1b0
[ 588.317031] ? set_blocksize+0x90/0x140
[ 588.319473] f2fs_mount+0x15/0x20
[ 588.320166] mount_fs+0x60/0x1a0
[ 588.320847] ? alloc_vfsmnt+0x309/0x360
[ 588.321647] vfs_kern_mount+0x6b/0x1a0
[ 588.322432] do_mount+0x34a/0x18c0
[ 588.323175] ? strndup_user+0x46/0x70
[ 588.323937] ? copy_mount_string+0x20/0x20
[ 588.324793] ? memcg_kmem_put_cache+0x1b/0xa0
[ 588.325702] ? kasan_check_write+0x14/0x20
[ 588.326562] ? _copy_from_user+0x6a/0x90
[ 588.327375] ? memdup_user+0x42/0x60
[ 588.328118] ksys_mount+0x83/0xd0
[ 588.328808] __x64_sys_mount+0x67/0x80
[ 588.329607] do_syscall_64+0x78/0x170
[ 588.330400] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 588.331461] RIP: 0033:0x7fad848e8b9a
[ 588.336022] RSP: 002b:
00007ffd7c5b6be8 EFLAGS:
00000206 ORIG_RAX:
00000000000000a5
[ 588.337547] RAX:
ffffffffffffffda RBX:
00000000016f8030 RCX:
00007fad848e8b9a
[ 588.338999] RDX:
00000000016f8210 RSI:
00000000016f9f30 RDI:
0000000001700ec0
[ 588.340442] RBP:
0000000000000000 R08:
0000000000000000 R09:
0000000000000013
[ 588.341887] R10:
00000000c0ed0000 R11:
0000000000000206 R12:
0000000001700ec0
[ 588.343341] R13:
00000000016f8210 R14:
0000000000000000 R15:
0000000000000003
[ 588.354891] ---[ end trace
4ce02f25ff7d3df5 ]---
[ 588.355862] RIP: 0010:reset_curseg+0x94/0x1a0
[ 588.360742] RSP: 0018:
ffff8801e88d7940 EFLAGS:
00010246
[ 588.361812] RAX:
0000000000000014 RBX:
ffff8801e1d46d00 RCX:
ffffffffb88bf60b
[ 588.363485] RDX:
0000000000000000 RSI:
dffffc0000000000 RDI:
ffff8801e1d46d64
[ 588.365213] RBP:
ffff8801e88d7968 R08:
ffffed003c32266f R09:
ffffed003c32266f
[ 588.366661] R10:
0000000000000001 R11:
ffffed003c32266e R12:
ffff8801f0337700
[ 588.368110] R13:
0000000000000000 R14:
0000000000000014 R15:
0000000000000000
[ 588.370057] FS:
00007fad85008840(0000) GS:
ffff8801f6e00000(0000) knlGS:
0000000000000000
[ 588.372099] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 588.373291] CR2:
0000000001705078 CR3:
00000001f30f8000 CR4:
00000000000006f0
- Location
https://elixir.bootlin.com/linux/latest/source/fs/f2fs/segment.c#L2147
curseg->zone = GET_ZONE_FROM_SEG(sbi, curseg->segno);
If secs_per_zone is corrupted due to fuzzing test, it will cause divide
zero operation when using GET_ZONE_FROM_SEG macro, so we should do more
sanity check with secs_per_zone during mount to avoid this issue.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Fri, 22 Jun 2018 08:06:59 +0000 (16:06 +0800)]
f2fs: disable f2fs_check_rb_tree_consistence
If there is millions of discard entries cached in rb tree, each
sanity check of it can cause very long latency as held cmd_lock
blocking other lock grabbers.
In other aspect, we have enabled the check very long time, as
we see, there is no such inconsistent condition caused by bugs.
But still we do not choose to kill it directly, instead, adding
an flag to disable the check now, if there is related code change,
we can reuse it to detect bugs.
Signed-off-by: Yunlei He <heyunlei@huawei.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Tue, 5 Jun 2018 09:44:11 +0000 (17:44 +0800)]
f2fs: introduce and spread verify_blkaddr
This patch introduces verify_blkaddr to check meta/data block address
with valid range to detect bug earlier.
In addition, once we encounter an invalid blkaddr, notice user to run
fsck to fix, and let the kernel panic.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Arnd Bergmann [Wed, 20 Jun 2018 08:02:19 +0000 (10:02 +0200)]
f2fs: use timespec64 for inode timestamps
The on-disk representation and the vfs both use 64-bit tv_sec values,
so let's change the last missing piece in the middle.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Thu, 21 Jun 2018 14:38:28 +0000 (22:38 +0800)]
f2fs: fix to wait on page writeback before updating page
In error path of f2fs_move_rehashed_dirents, inode page could be writeback
state, so we should wait on inode page writeback before updating it.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Jaegeuk Kim [Thu, 21 Jun 2018 18:29:43 +0000 (11:29 -0700)]
f2fs: assign REQ_RAHEAD to bio for ->readpages
As Jens reported, we'd better assign REQ_RAHEAD to bio by the fact that
->readpages is called only from read-ahead.
In Documentation/filesystems/vfs.txt,
readpages: called by the VM to read pages associated with the address_space
object. This is essentially just a vector version of
readpage. Instead of just one page, several pages are
requested.
readpages is only used for read-ahead, so read errors are
ignored. If anything goes wrong, feel free to give up.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Yunlei He [Thu, 21 Jun 2018 06:49:06 +0000 (14:49 +0800)]
f2fs: fix a hungtask problem caused by congestion_wait
This patch fix hungtask problem which can be reproduced as follow:
Thread 0~3:
while true
do
touch /xxx/test/file_xxx
done
Thread 4 write a new checkpoint every three seconds.
In the meantime, fio start 16 threads for randwrite.
With my debug info, cycles num will exceed 1000 in function
f2fs_sync_dirty_inodes, and most of cycle will be dropped
into congestion_wait() and sleep more than 20ms. Cycles num
reduced to 3 with this patch.
Signed-off-by: Yunlei He <heyunlei@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Dan Carpenter [Wed, 20 Jun 2018 10:39:53 +0000 (13:39 +0300)]
f2fs: Fix uninitialized return in f2fs_ioc_shutdown()
"ret" can be uninitialized on the success path when "in ==
F2FS_GOING_DOWN_FULLSYNC".
Fixes:
60b2b4ee2bc0 ("f2fs: Fix deadlock in shutdown ioctl")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Jaegeuk Kim [Thu, 21 Jun 2018 04:27:21 +0000 (21:27 -0700)]
f2fs: don't issue discard commands in online discard is on
Actually, we don't need to issue discard commands, if discard is on, as
mentioned in the comment.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Fri, 15 Jun 2018 06:45:57 +0000 (14:45 +0800)]
f2fs: fix to propagate return value of scan_nat_page()
As Anatoly Trosinenko reported in bugzilla:
How to reproduce:
1. Compile the
73fcb1a370c76 version of the kernel using the config attached
2. Unpack and mount the attached filesystem image as F2FS
3. The kernel will BUG() on mount (BUGs are explicitly enabled in config)
[ 2.233612] F2FS-fs (sda): Found nat_bits in checkpoint
[ 2.248422] ------------[ cut here ]------------
[ 2.248857] kernel BUG at fs/f2fs/node.c:1967!
[ 2.249760] invalid opcode: 0000 [#1] SMP NOPTI
[ 2.250219] Modules linked in:
[ 2.251848] CPU: 0 PID: 944 Comm: mount Not tainted 4.17.0-rc5+ #1
[ 2.252331] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014
[ 2.253305] RIP: 0010:build_free_nids+0x337/0x3f0
[ 2.253672] RSP: 0018:
ffffae7fc0857c50 EFLAGS:
00000246
[ 2.254080] RAX:
00000000ffffffff RBX:
0000000000000123 RCX:
0000000000000001
[ 2.254638] RDX:
ffff9aa7063d5c00 RSI:
0000000000000122 RDI:
ffff9aa705852e00
[ 2.255190] RBP:
ffff9aa705852e00 R08:
0000000000000001 R09:
ffff9aa7059090c0
[ 2.255719] R10:
0000000000000000 R11:
0000000000000000 R12:
ffff9aa705852e00
[ 2.256242] R13:
ffff9aa7063ad000 R14:
ffff9aa705919000 R15:
0000000000000123
[ 2.256809] FS:
00000000023078c0(0000) GS:
ffff9aa707800000(0000) knlGS:
0000000000000000
[ 2.258654] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 2.259153] CR2:
00000000005511ae CR3:
0000000005872000 CR4:
00000000000006f0
[ 2.259801] Call Trace:
[ 2.260583] build_node_manager+0x5cd/0x600
[ 2.260963] f2fs_fill_super+0x66a/0x17c0
[ 2.261300] ? f2fs_commit_super+0xe0/0xe0
[ 2.261622] mount_bdev+0x16e/0x1a0
[ 2.261899] mount_fs+0x30/0x150
[ 2.262398] vfs_kern_mount.part.28+0x4f/0xf0
[ 2.262743] do_mount+0x5d0/0xc60
[ 2.263010] ? _copy_from_user+0x37/0x60
[ 2.263313] ? memdup_user+0x39/0x60
[ 2.263692] ksys_mount+0x7b/0xd0
[ 2.263960] __x64_sys_mount+0x1c/0x20
[ 2.264268] do_syscall_64+0x43/0xf0
[ 2.264560] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 2.265095] RIP: 0033:0x48d31a
[ 2.265502] RSP: 002b:
00007ffc6fe60a08 EFLAGS:
00000246 ORIG_RAX:
00000000000000a5
[ 2.266089] RAX:
ffffffffffffffda RBX:
0000000000008000 RCX:
000000000048d31a
[ 2.266607] RDX:
00007ffc6fe62fa5 RSI:
00007ffc6fe62f9d RDI:
00007ffc6fe62f94
[ 2.267130] RBP:
00000000023078a0 R08:
0000000000000000 R09:
0000000000000000
[ 2.267670] R10:
0000000000008000 R11:
0000000000000246 R12:
0000000000000000
[ 2.268192] R13:
0000000000000000 R14:
00007ffc6fe60c78 R15:
0000000000000000
[ 2.268767] Code: e8 5f c3 ff ff 83 c3 01 41 83 c7 01 81 fb c7 01 00 00 74 48 44 39 7d 04 76 42 48 63 c3 48 8d 04 c0 41 8b 44 06 05 83 f8 ff 75 c1 <0f> 0b 49 8b 45 50 48 8d b8 b0 00 00 00 e8 37 59 69 00 b9 01 00
[ 2.270434] RIP: build_free_nids+0x337/0x3f0 RSP:
ffffae7fc0857c50
[ 2.271426] ---[ end trace
ab20c06cd3c8fde4 ]---
During loading NAT entries, we will do sanity check, once the entry info
is corrupted, it will cause BUG_ON directly to protect user data from
being overwrited.
In this case, it will be better to just return failure on mount() instead
of panic, so that user can get hint from kmsg and try fsck for recovery
immediately rather than after an abnormal reboot.
https://bugzilla.kernel.org/show_bug.cgi?id=199769
Reported-by: Anatoly Trosinenko <anatoly.trosinenko@gmail.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Weichao Guo [Fri, 9 Mar 2018 15:10:21 +0000 (23:10 +0800)]
f2fs: support in-memory inode checksum when checking consistency
Enable in-memory inode checksum to protect metadata blocks from
in-memory scribbles when checking consistency, which has no
performance requirements.
Signed-off-by: Weichao Guo <guoweichao@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Mon, 11 Jun 2018 10:02:02 +0000 (18:02 +0800)]
f2fs: fix error path of fill_super
In fill_super, if root inode's attribute is incorrect, we need to
call f2fs_destroy_stats to release stats memory.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Mon, 11 Jun 2018 10:02:01 +0000 (18:02 +0800)]
f2fs: relocate readdir_ra configure initialization
readdir_ra is sysfs configuration instead of mount option, so it should
not be initialized in default_options(), otherwise after remount, it can
be reset to be enabled which may not as user wish, so let's move it to
f2fs_tuning_parameters().
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Wed, 6 Jun 2018 15:55:02 +0000 (23:55 +0800)]
f2fs: move s_res{u,g}id initialization to default_options()
Let default_options() initialize s_res{u,g}id with default value like
other options.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Wed, 6 Jun 2018 15:55:01 +0000 (23:55 +0800)]
f2fs: don't acquire orphan ino during recovery
During orphan inode recovery, checkpoint should never succeed due to
SBI_POR_DOING flag, so we don't need acquire orphan ino which only be
used by checkpoint.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Jaegeuk Kim [Sun, 15 Jul 2018 00:58:08 +0000 (09:58 +0900)]
f2fs: avoid potential deadlock in f2fs_sbi_store
[ 155.018460] ======================================================
[ 155.021431] WARNING: possible circular locking dependency detected
[ 155.024339] 4.18.0-rc3+ #5 Tainted: G OE
[ 155.026879] ------------------------------------------------------
[ 155.029783] umount/2901 is trying to acquire lock:
[ 155.032187]
00000000c4282f1f (kn->count#130){++++}, at: kernfs_remove+0x1f/0x30
[ 155.035439]
[ 155.035439] but task is already holding lock:
[ 155.038892]
0000000056e4307b (&type->s_umount_key#41){++++}, at: deactivate_super+0x33/0x50
[ 155.042602]
[ 155.042602] which lock already depends on the new lock.
[ 155.042602]
[ 155.047465]
[ 155.047465] the existing dependency chain (in reverse order) is:
[ 155.051354]
[ 155.051354] -> #1 (&type->s_umount_key#41){++++}:
[ 155.054768] f2fs_sbi_store+0x61/0x460 [f2fs]
[ 155.057083] kernfs_fop_write+0x113/0x1a0
[ 155.059277] __vfs_write+0x36/0x180
[ 155.061250] vfs_write+0xbe/0x1b0
[ 155.063179] ksys_write+0x55/0xc0
[ 155.065068] do_syscall_64+0x60/0x1b0
[ 155.067071] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 155.069529]
[ 155.069529] -> #0 (kn->count#130){++++}:
[ 155.072421] __kernfs_remove+0x26f/0x2e0
[ 155.074452] kernfs_remove+0x1f/0x30
[ 155.076342] kobject_del.part.5+0xe/0x40
[ 155.078354] f2fs_put_super+0x12d/0x290 [f2fs]
[ 155.080500] generic_shutdown_super+0x6c/0x110
[ 155.082655] kill_block_super+0x21/0x50
[ 155.084634] kill_f2fs_super+0x9c/0xc0 [f2fs]
[ 155.086726] deactivate_locked_super+0x3f/0x70
[ 155.088826] cleanup_mnt+0x3b/0x70
[ 155.090584] task_work_run+0x93/0xc0
[ 155.092367] exit_to_usermode_loop+0xf0/0x100
[ 155.094466] do_syscall_64+0x162/0x1b0
[ 155.096312] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 155.098603]
[ 155.098603] other info that might help us debug this:
[ 155.098603]
[ 155.102418] Possible unsafe locking scenario:
[ 155.102418]
[ 155.105134] CPU0 CPU1
[ 155.107037] ---- ----
[ 155.108910] lock(&type->s_umount_key#41);
[ 155.110674] lock(kn->count#130);
[ 155.113010] lock(&type->s_umount_key#41);
[ 155.115608] lock(kn->count#130);
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Jaegeuk Kim [Thu, 21 Jun 2018 20:46:23 +0000 (13:46 -0700)]
f2fs: indicate shutdown f2fs to allow unmount successfully
Once we shutdown f2fs, we have to flush stale pages in order to unmount
the system. In order to make stable, we need to stop fault injection as well.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Jaegeuk Kim [Thu, 12 Jul 2018 01:30:42 +0000 (18:30 -0700)]
f2fs: keep meta pages in cp_error state
It turns out losing meta pages in shutdown period makes f2fs very unstable
so that I could see many unexpected error conditions.
Let's keep meta pages for fault injection and sudden power-off tests.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Jaegeuk Kim [Fri, 6 Jul 2018 23:47:34 +0000 (16:47 -0700)]
f2fs: do checkpoint in kill_sb
When unmounting f2fs in force mode, we can get it stuck by io_schedule()
by some pending IOs in meta_inode.
io_schedule+0xd/0x30
wait_on_page_bit_common+0xc6/0x130
__filemap_fdatawait_range+0xbd/0x100
filemap_fdatawait_keep_errors+0x15/0x40
sync_inodes_sb+0x1cf/0x240
sync_filesystem+0x52/0x90
generic_shutdown_super+0x1d/0x110
kill_f2fs_super+0x28/0x80 [f2fs]
deactivate_locked_super+0x35/0x60
cleanup_mnt+0x36/0x70
task_work_run+0x79/0xa0
exit_to_usermode_loop+0x62/0x70
do_syscall_64+0xdb/0xf0
entry_SYSCALL_64_after_hwframe+0x44/0xa9
0xffffffffffffffff
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Jaegeuk Kim [Sat, 30 Jun 2018 01:55:12 +0000 (18:55 -0700)]
f2fs: allow wrong configured dio to buffered write
This fixes to support dio having unaligned buffers as buffered writes.
xfs_io -f -d -c "pwrite 0 512" $testfile
-> okay
xfs_io -f -d -c "pwrite 1 512" $testfile
-> EINVAL
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Jaegeuk Kim [Fri, 29 Jun 2018 02:34:40 +0000 (19:34 -0700)]
f2fs: flush journal nat entries for nat_bits during unmount
Let's flush journal nat entries for speed up in the next run.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Linus Torvalds [Fri, 6 Jul 2018 16:14:34 +0000 (09:14 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
"A few more changes for v4.18:
- wire up the two new system calls io_pgetevents and rseq
- fix a register corruption in the expolines code for machines
without EXRL
- drastically reduce the memory utilization of the dasd driver
- fix reference counting for KVM page table pages"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: wire up rseq system call
s390: wire up io_pgetevents system call
s390/mm: fix refcount usage for 4K pgste
s390/dasd: reduce the default queue depth and nr of hardware queues
s390: Correct register corruption in critical section cleanup
Linus Torvalds [Fri, 6 Jul 2018 02:43:29 +0000 (19:43 -0700)]
Merge tag 'drm-fixes-2018-07-06' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"This is the drm fixes for rc4.
It's a bit larger than I'd like but the exynos cleanups are pretty
mechanical, and I'd rather have them in sooner rather than later so we
can avoid too much conflicts around them. The non-mechanincal exynos
changes are mostly fixes for new feature recently introduced.
Apart from the exynos updates, we have:
i915:
- GVT and GGTT mapping fixes
amdgpu:
- fix HDMI2.0 4K@60 Hz regression
- Hotplug fixes for dual-GPU laptops to make power management better
- misc vega12 bios fixes, a race fix and some typos.
sii8620 bridge:
- small fixes around mode setting
core:
- use kvzalloc to allocate blob property memory"
* tag 'drm-fixes-2018-07-06' of git://anongit.freedesktop.org/drm/drm: (34 commits)
drm/amd/display: add a check for display depth validity
drm/amd/display: adding ycbcr420 pixel encoding for hdmi
drm/udl: fix display corruption of the last line
drm/bridge/sii8620: Fix link mode selection
drm/bridge/sii8620: Fix display of packed pixel modes
drm/bridge/sii8620: Send AVI infoframe in all MHL versions
drm/amdgpu: fix user fence write race condition
drm/i915: Try GGTT mmapping whole object as partial
drm/amdgpu/pm: fix display count in non-DC path
drm/amdgpu: fix swapped emit_ib_size in vce3
drm: Use kvzalloc for allocating blob property memory
drm/i915/gvt: changed DDI mode emulation type
drm/i915/gvt: fix a bug of partially write ggtt enties
drm/exynos: Replace drm_dev_unref with drm_dev_put
drm/exynos: Replace drm_gem_object_unreference_unlocked with put function
drm/exynos: Replace drm_framebuffer_{un/reference} with put,get functions
drm/exynos: ipp: use correct enum type
drm/exynos: decon5433: Fix WINCONx reset value
drm/exynos: decon5433: Fix per-plane global alpha for XRGB modes
drm/exynos: fimc: Use real buffer width for configuring the hardware
...
Linus Torvalds [Fri, 6 Jul 2018 02:29:07 +0000 (19:29 -0700)]
Merge tag 'trace-v4.18-rc3' of git://git./linux/kernel/git/rostedt/linux-trace
Pull tracing fixes and cleanups from Steven Rostedt:
"While cleaning out my INBOX, I found a few patches that were lost in
the noise. These are minor bug fixes and clean ups. Those include:
- avoid a string overflow
- code that didn't match the comment (but should)
- a small code optimization (use of a conditional)
- quiet printf warnings
- nuke unused code
- fix function graph interrupt annotation"
* tag 'trace-v4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Fix missing return symbol in function_graph output
ftrace: Nuke clear_ftrace_function
tracing: Use __printf markup to silence compiler
tracing: Optimize trace_buffer_iter() logic
tracing: Make create_filter() code match the comments
tracing: Avoid string overflow
Dave Airlie [Fri, 6 Jul 2018 00:46:58 +0000 (10:46 +1000)]
Merge tag 'exynos-drm-fixes-for-v4.18-rc4' of git://git./linux/kernel/git/daeinki/drm-exynos into drm-fixes
Fixups
- Fix several problems to IPPv2 merged to mainline recentely.
. An align problem of width size that IPP driver incorrectly
calculated the real buffer size.
. Horizontal and vertical flip problem.
. Per-plane global alpha for XRGB modes.
. Incorrect variant of the YUV modes.
- Fix plane overlapping problem.
. The stange order of overlapping planes on XRGB modes
by setting global alpha value to maximum value.
Cleanup
- Rename a enum type, drm_ipp_size_id, to one specific to Exynos,
drm_exynos_ipp_limit_type.
- Replace {un/reference} with {put,get} functions.
. it replaces several reference/unreference functions with Linux
kernel nameing standard.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1530512041-21392-1-git-send-email-inki.dae@samsung.com
Dave Airlie [Fri, 6 Jul 2018 00:44:35 +0000 (10:44 +1000)]
Merge branch 'drm-fixes-4.18' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
- Fix an HDMI 2.0 4k@60 regression
- Hotplug fixes for PX/HG laptops
- Fixes for vbios changes in vega12
- Fix a race in the user fence code
- Fix a couple of misc typos
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180705155206.2752-1-alexander.deucher@amd.com
Dave Airlie [Fri, 6 Jul 2018 00:44:04 +0000 (10:44 +1000)]
Merge tag 'drm-intel-fixes-2018-07-05' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
A couple of GVT fixes, and a GGTT mmapping fix.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/8736wxq35t.fsf@intel.com
Dave Airlie [Fri, 6 Jul 2018 00:41:12 +0000 (10:41 +1000)]
Merge tag 'drm-misc-fixes-2018-07-05' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
Fixes for v4.18-rc4:
- A few small fixes for the sii8620 bridge.
- Allocate blob property memory using kvzalloc instead of kmalloc.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/4267636e-bb7c-8f69-eeff-12e045b3e7e1@linux.intel.com
Linus Torvalds [Wed, 4 Jul 2018 00:10:19 +0000 (17:10 -0700)]
Fix up non-directory creation in SGID directories
sgid directories have special semantics, making newly created files in
the directory belong to the group of the directory, and newly created
subdirectories will also become sgid. This is historically used for
group-shared directories.
But group directories writable by non-group members should not imply
that such non-group members can magically join the group, so make sure
to clear the sgid bit on non-directories for non-members (but remember
that sgid without group execute means "mandatory locking", just to
confuse things even more).
Reported-by: Jann Horn <jannh@google.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Thu, 5 Jul 2018 01:17:51 +0000 (18:17 -0700)]
autofs: rename 'autofs' module back to 'autofs4'
It turns out that systemd has a bug: it wants to load the autofs module
early because of some initialization ordering with udev, and it doesn't
do that correctly. Everywhere else it does the proper "look up module
name" that does the proper alias resolution, but in that early code, it
just uses a hardcoded "autofs4" for the module name.
The result of that is that as of commit
a2225d931f75 ("autofs: remove
left-over autofs4 stubs"), you get
systemd[1]: Failed to insert module 'autofs4': No such file or directory
in the system logs, and a lack of module loading. All this despite the
fact that we had very clearly marked 'autofs4' as an alias for this
module.
What's so ridiculous about this is that literally everything else does
the module alias handling correctly, including really old versions of
systemd (that just used 'modprobe' to do this), and even all the other
systemd module loading code.
Only that special systemd early module load code is broken, hardcoding
the module names for not just 'autofs4', but also "ipv6", "unix",
"ip_tables" and "virtio_rng". Very annoying.
Instead of creating an _additional_ separate compatibility 'autofs4'
module, just rely on the fact that everybody else gets this right, and
just call the module 'autofs4' for compatibility reasons, with 'autofs'
as the alias name.
That will allow the systemd people to fix their bugs, adding the proper
alias handling, and maybe even fix the name of the module to be just
"autofs" (so that they can _test_ the alias handling). And eventually,
we can revert this silly compatibility hack.
See also
https://github.com/systemd/systemd/issues/9501
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=902946
for the systemd bug reports upstream and in the Debian bug tracker
respectively.
Fixes:
a2225d931f75 ("autofs: remove left-over autofs4 stubs")
Reported-by: Ben Hutchings <ben@decadent.org.uk>
Reported-by: Michael Biebl <biebl@debian.org>
Cc: Ian Kent <raven@themaw.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Thu, 5 Jul 2018 16:52:30 +0000 (09:52 -0700)]
Merge tag 'acpi-4.18-rc4' of git://git./linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix a recent ACPICA regression, fix a battery driver regression
introduced during the 4.17 cycle and fix up the recently added support
for the PPTT ACPI table.
Specifics:
- Revert part of a recent ACPICA regression fix that added leading
newlines to ACPICA error messages and made the kernel log look
broken (Rafael Wysocki).
- Fix an ACPI battery driver regression introduced during the 4.17
cycle due to incorrect error handling that made Thinkpad 13 laptops
crash on boot (Jouke Witteveen).
- Fix up the recently added PPTT ACPI table support by covering the
case when a PPTT structure represents a processors group correctly
(Sudeep Holla)"
* tag 'acpi-4.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / battery: Safe unregistering of hooks
ACPI / PPTT: use ACPI ID whenever ACPI_PPTT_ACPI_PROCESSOR_ID_VALID is set
ACPICA: Drop leading newlines from error messages
Linus Torvalds [Thu, 5 Jul 2018 16:50:18 +0000 (09:50 -0700)]
Merge tag 'pm-4.18-rc4' of git://git./linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix a PCI power management regression introduced during the 4.17
cycle and fix up the recently added support for devices in multiple
power domains.
Specifics:
- Resume parallel PCI (non-PCIe) bridges on suspend-to-RAM (ACP S3)
to avoid confusing the platform firmware which started to happen
after a core power management regression fix that went in during
the 4.17 cycle (Rafael Wysocki).
- Fix up the recently added support for devices in multiple power
domains by avoiding to power up the entire domain unnecessarily
when attaching a device to it (Ulf Hansson)"
* tag 'pm-4.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM / Domains: Don't power on at attach for the multi PM domain case
PCI / ACPI / PM: Resume bridges w/o drivers on suspend-to-RAM
Linus Torvalds [Thu, 5 Jul 2018 16:47:18 +0000 (09:47 -0700)]
Merge tag 'riscv-for-linus-4.18-rc4' of git://git./linux/kernel/git/palmer/riscv-linux
Pull RISC-V fixes from Palmer Dabbelt:
"This contains a handful of fixes for the RISC-V port:
- A fix to R_RISCV_ADD32/R_RISCV_SUB32 relocations that allows
modules that use these to load correctly.
- The removal of of_platform_populate(), which is obselete.
- The removal of irq-riscv-intc.h, which is obselete.
- A fix to PTRACE_SETREGSET.
- Fixes that allow the RV32I kernel to build (at least for Zong, I've
got another patch on the mailing list that's necessary on my setup :)).
I've just given these a defconfig build test"
* tag 'riscv-for-linus-4.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
RISC-V: Fix PTRACE_SETREGSET bug.
RISC-V: Don't include irq-riscv-intc.h
riscv: remove unnecessary of_platform_populate call
RISC-V: fix R_RISCV_ADD32/R_RISCV_SUB32 relocations
RISC-V: Change variable type for 32-bit compatible
RISC-V: Add definiion of extract symbol's index and type for 32-bit
RISC-V: Select GENERIC_UCMPDI2 on RV32I
RISC-V: Add conditional macro for zone of DMA32
Linus Torvalds [Thu, 5 Jul 2018 16:45:25 +0000 (09:45 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/gerg/m68knommu
Pull m68knommu fix from Greg Ungerer:
"A single fix for breakage introduced in this merge window"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
m68k: fix "bad page state" oops on ColdFire boot
Mikita Lipski [Wed, 4 Jul 2018 21:27:56 +0000 (17:27 -0400)]
drm/amd/display: add a check for display depth validity
[why]
HDMI 2.0 fails to validate 4K@60 timing with 10 bpc
[how]
Adding a helper function that would verify if the display depth
assigned would pass a bandwidth validation.
Drop the display depth by one level till calculated pixel clk
is lower than maximum TMDS clk.
Bugzilla: https://bugs.freedesktop.org/106959
Tested-by: Mike Lothian <mike@fireburn.co.uk>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Mikita Lipski [Wed, 4 Jul 2018 21:26:26 +0000 (17:26 -0400)]
drm/amd/display: adding ycbcr420 pixel encoding for hdmi
[why]
HDMI EDID's VSDB contains spectial timings for specifically
YCbCr 4:2:0 colour space. In those cases we need to verify
if the mode provided is one of the special ones has to use
YCbCr 4:2:0 pixel encoding for display info.
[how]
Verify if the mode is using specific ycbcr420 colour space with
the help of DRM helper function and assign the mode to use
ycbcr420 pixel encoding.
Tested-by: Mike Lothian <mike@fireburn.co.uk>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Rafael J. Wysocki [Thu, 5 Jul 2018 11:03:43 +0000 (13:03 +0200)]
Merge branches 'acpi-tables' and 'acpica'
Merge ACPICA regression fix and a fix for the recently added PPTT
support.
* acpi-tables:
ACPI / PPTT: use ACPI ID whenever ACPI_PPTT_ACPI_PROCESSOR_ID_VALID is set
* acpica:
ACPICA: Drop leading newlines from error messages
Rafael J. Wysocki [Thu, 5 Jul 2018 10:47:16 +0000 (12:47 +0200)]
Merge branch 'pm-pci'
Merge a PCI power management regression fix.
* pm-pci:
PCI / ACPI / PM: Resume bridges w/o drivers on suspend-to-RAM
Mikulas Patocka [Sun, 3 Jun 2018 14:40:54 +0000 (16:40 +0200)]
drm/udl: fix display corruption of the last line
The displaylink hardware has such a peculiarity that it doesn't render a
command until next command is received. This produces occasional
corruption, such as when setting 22x11 font on the console, only the first
line of the cursor will be blinking if the cursor is located at some
specific columns.
When we end up with a repeating pixel, the driver has a bug that it leaves
one uninitialized byte after the command (and this byte is enough to flush
the command and render it - thus it fixes the screen corruption), however
whe we end up with a non-repeating pixel, there is no byte appended and
this results in temporary screen corruption.
This patch fixes the screen corruption by always appending a byte 0xAF at
the end of URB. It also removes the uninitialized byte.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Palmer Dabbelt [Wed, 4 Jul 2018 21:12:53 +0000 (14:12 -0700)]
RISC-V: Fix the rv32i kernel build
These patches for building 32-bit RISC-V kernel.
- Fix the compile errors and warnings on RV32I.
- Fix some incompatible problem on RV32I.
- Add format.h for compatible of print format.
The fixed width integer types format for Elf_Addr will move to
generic header by another patch. For now, there are some warning
about unexpected argument of type on RV32I.
Change in v1:
- Fix some error in v1
- Remove implementation of fixed width integer types format for Elf_Addr.
Jim Wilson [Mon, 11 Jun 2018 21:48:22 +0000 (14:48 -0700)]
RISC-V: Fix PTRACE_SETREGSET bug.
In riscv_gpr_set, pass regs instead of ®s to user_regset_copyin to fix
gdb segfault.
Signed-off-by: Jim Wilson <jimw@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Palmer Dabbelt [Fri, 22 Jun 2018 22:46:28 +0000 (15:46 -0700)]
RISC-V: Don't include irq-riscv-intc.h
This file has never existed in the upstream kernel, but it's guarded by
an #ifdef that's also never existed in the upstream kernel. As a part
of our interrupt controller refactoring this header is no longer
necessary, but this reference managed to sneak in anyway.
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Rob Herring [Tue, 19 Jun 2018 21:41:34 +0000 (15:41 -0600)]
riscv: remove unnecessary of_platform_populate call
The DT core will call of_platform_default_populate, so it is not
necessary for arch specific code to call it unless there are custom
match entries, auxdata or parent device. Neither of those apply here, so
remove the call.
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: linux-riscv@lists.infradead.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
projects / platform / kernel / linux-rpi.git / log