ext4: init quota for 'old.inode' in 'ext4_rename'
commit
fae381a3d79bb94aa2eb752170d47458d778b797 upstream.
Syzbot found the following issue:
ext4_parse_param: s_want_extra_isize=128
ext4_inode_info_init: s_want_extra_isize=32
ext4_rename: old.inode=
ffff88823869a2c8 old.dir=
ffff888238699828 new.inode=
ffff88823869d7e8 new.dir=
ffff888238699828
__ext4_mark_inode_dirty: inode=
ffff888238699828 ea_isize=32 want_ea_size=128
__ext4_mark_inode_dirty: inode=
ffff88823869a2c8 ea_isize=32 want_ea_size=128
ext4_xattr_block_set: inode=
ffff88823869a2c8
------------[ cut here ]------------
WARNING: CPU: 13 PID: 2234 at fs/ext4/xattr.c:2070 ext4_xattr_block_set.cold+0x22/0x980
Modules linked in:
RIP: 0010:ext4_xattr_block_set.cold+0x22/0x980
RSP: 0018:
ffff888227d3f3b0 EFLAGS:
00010202
RAX:
0000000000000001 RBX:
ffff88823007a000 RCX:
0000000000000000
RDX:
0000000000000a03 RSI:
0000000000000040 RDI:
ffff888230078178
RBP:
0000000000000000 R08:
000000000000002c R09:
ffffed1075c7df8e
R10:
ffff8883ae3efc6b R11:
ffffed1075c7df8d R12:
0000000000000000
R13:
ffff88823869a2c8 R14:
ffff8881012e0460 R15:
dffffc0000000000
FS:
00007f350ac1f740(0000) GS:
ffff8883ae200000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
00007f350a6ed6a0 CR3:
0000000237456000 CR4:
00000000000006e0
DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
Call Trace:
<TASK>
? ext4_xattr_set_entry+0x3b7/0x2320
? ext4_xattr_block_set+0x0/0x2020
? ext4_xattr_set_entry+0x0/0x2320
? ext4_xattr_check_entries+0x77/0x310
? ext4_xattr_ibody_set+0x23b/0x340
ext4_xattr_move_to_block+0x594/0x720
ext4_expand_extra_isize_ea+0x59a/0x10f0
__ext4_expand_extra_isize+0x278/0x3f0
__ext4_mark_inode_dirty.cold+0x347/0x410
ext4_rename+0xed3/0x174f
vfs_rename+0x13a7/0x2510
do_renameat2+0x55d/0x920
__x64_sys_rename+0x7d/0xb0
do_syscall_64+0x3b/0xa0
entry_SYSCALL_64_after_hwframe+0x72/0xdc
As 'ext4_rename' will modify 'old.inode' ctime and mark inode dirty,
which may trigger expand 'extra_isize' and allocate block. If inode
didn't init quota will lead to warning. To solve above issue, init
'old.inode' firstly in 'ext4_rename'.
Reported-by: syzbot+98346927678ac3059c77@syzkaller.appspotmail.com
Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20221107015335.2524319-1-yebin@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>