powerpc/64: Fix perf profiling asynchronous interrupt handlers

[ Upstream commit c28548012ee2bac55772ef7685138bd1124b80c3 ]

Interrupt entry sets the soft mask to IRQS_ALL_DISABLED to match the
hard irq disabled state. So when should_hard_irq_enable() returns true
because we want PMI interrupts in irq handlers, MSR[EE] is enabled but
PMIs just get soft-masked. Fix this by clearing IRQS_PMI_DISABLED before
enabling MSR[EE].

This also tidies some of the warnings, no need to duplicate them in
both should_hard_irq_enable() and do_hard_irq_enable().

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20230121100156.2824054-1-npiggin@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

net: stmmac: do not stop RX_CLK in Rx LPI state for qcs404 SoC

[ Upstream commit 54aa39a513dbf2164ca462a19f04519b2407a224 ]

Currently in phy_init_eee() the driver unconditionally configures the PHY
to stop RX_CLK after entering Rx LPI state. This causes an LPI interrupt
storm on my qcs404-base board.

Change the PHY initialization so that for "qcom,qcs404-ethqos" compatible
device RX_CLK continues to run even in Rx LPI state.

Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

selftest: net: Improve IPV6_TCLASS/IPV6_HOPLIMIT tests apparmor compatibility

[ Upstream commit a6efc42a86c0c87cfe2f1c3d1f09a4c9b13ba890 ]

"tcpdump" is used to capture traffic in these tests while using a random,
temporary and not suffixed file for it. This can interfere with apparmor
configuration where the tool is only allowed to read from files with
'known' extensions.

The MINE type application/vnd.tcpdump.pcap was registered with IANA for
pcap files and .pcap is the extension that is both most common but also
aligned with standard apparmor configurations. See TCPDUMP(8) for more
details.

This improves compatibility with standard apparmor configurations by
using ".pcap" as the file extension for the tests' temporary files.

Signed-off-by: Andrei Gherzan <andrei.gherzan@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

net/rose: Fix to not accept on connected socket

[ Upstream commit 14caefcf9837a2be765a566005ad82cd0d2a429f ]

If you call listen() and accept() on an already connect()ed
rose socket, accept() can successfully connect.
This is because when the peer socket sends data to sendmsg,
the skb with its own sk stored in the connected socket's
sk->sk_receive_queue is connected, and rose_accept() dequeues
the skb waiting in the sk->sk_receive_queue.

This creates a child socket with the sk of the parent
rose socket, which can cause confusion.

Fix rose_listen() to return -EINVAL if the socket has
already been successfully connected, and add lock_sock
to prevent this issue.

Signed-off-by: Hyunwoo Kim <v4bel@theori.io>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20230125105944.GA133314@ubuntu
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

vdpa: ifcvf: Do proper cleanup if IFCVF init fails

[ Upstream commit 6b04456e248761cf68f562f2fd7c04e591fcac94 ]

ifcvf_mgmt_dev leaks memory if it is not freed before
returning. Call is made to correct return statement
so memory does not leak. ifcvf_init_hw does not take
care of this so it is needed to do it here.

Signed-off-by: Tanmay Bhushan <007047221b@gmail.com>
Message-Id: <772e9fe133f21fa78fb98a2ebe8969efbbd58e3c.camel@gmail.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Zhu Lingshan <lingshan.zhu@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

tools/virtio: fix the vringh test for virtio ring changes

[ Upstream commit 3f7b75abf41cc4143aa295f62acbb060a012868d ]

Fix the build caused by missing kmsan_handle_dma() and is_power_of_2() that
are used in drivers/virtio/virtio_ring.c.

Signed-off-by: Shunsuke Mie <mie@igel.co.jp>
Message-Id: <20230110034310.779744-1-mie@igel.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

ASoC: cs42l56: fix DT probe

[ Upstream commit e18c6da62edc780e4f4f3c9ce07bdacd69505182 ]

While looking through legacy platform data users, I noticed that
the DT probing never uses data from the DT properties, as the
platform_data structure gets overwritten directly after it
is initialized.

There have never been any boards defining the platform_data in
the mainline kernel either, so this driver so far only worked
with patched kernels or with the default values.

For the benefit of possible downstream users, fix the DT probe
by no longer overwriting the data.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230126162203.2986339-1-arnd@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

bpf, sockmap: Don't let sock_map_{close,destroy,unhash} call itself

[ Upstream commit 5b4a79ba65a1ab479903fff2e604865d229b70a9 ]

sock_map proto callbacks should never call themselves by design. Protect
against bugs like [1] and break out of the recursive loop to avoid a stack
overflow in favor of a resource leak.

[1] https://lore.kernel.org/all/00000000000073b14905ef2e7401@google.com/

Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/r/20230113-sockmap-fix-v2-1-1e0ee7ac2f90@cloudflare.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

ASoC: amd: yc: Add Xiaomi Redmi Book Pro 15 2022 into DMI table

[ Upstream commit dcff8b7ca92d724bdaf474a3fa37a7748377813a ]

This model requires an additional detection quirk to enable the
internal microphone - BIOS doesn't seem to support AcpDmicConnected
(nothing in acpidump output).

Signed-off-by: fengwk <fengwk94@gmail.com>
Link: https://lore.kernel.org/r/Y8wmCutc74j/tyHP@arch
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

ALSA: hda: Do not unset preset when cleaning up codec

[ Upstream commit 87978e6ad45a16835cc58234451111091be3c59a ]

Several functions that take part in codec's initialization and removal
are re-used by ASoC codec drivers implementations. Drivers mimic the
behavior of hda_codec_driver_probe/remove() found in
sound/pci/hda/hda_bind.c with their component->probe/remove() instead.

One of the reasons for that is the expectation of
snd_hda_codec_device_new() to receive a valid pointer to an instance of
struct snd_card. This expectation can be met only once sound card
components probing commences.

As ASoC sound card may be unbound without codec device being actually
removed from the system, unsetting ->preset in
snd_hda_codec_cleanup_for_unbind() interferes with module unload -> load
scenario causing null-ptr-deref. Preset is assigned only once, during
device/driver matching whereas ASoC codec driver's module reloading may
occur several times throughout the lifetime of an audio stack.

Suggested-by: Takashi Iwai <tiwai@suse.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20230119143235.1159814-1-cezary.rojewski@intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

selftests/bpf: Verify copy_register_state() preserves parent/live fields

[ Upstream commit b9fa9bc839291020b362ab5392e5f18ba79657ac ]

A testcase to check that verifier.c:copy_register_state() preserves
register parentage chain and livness information.

Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20230106142214.1040390-3-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

ASoC: Intel: sof_ssp_amp: always set dpcm_capture for amplifiers

[ Upstream commit b3c00316a2f847791bae395ea6dd91aa7a221471 ]

The amplifier may provide hardware support for I/V feedback, or
alternatively the firmware may generate an echo reference attached to
the SSP and dailink used for the amplifier.

To avoid any issues with invalid/NULL substreams in the latter case,
always unconditionally set dpcm_capture.

Link: https://github.com/thesofproject/linux/issues/4083
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20230119163459.2235843-5-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

ASoC: Intel: sof_nau8825: always set dpcm_capture for amplifiers

[ Upstream commit 36a71a0eb7cdb5ccf4b0214dbd41ab00dff18c7f ]

The amplifier may provide hardware support for I/V feedback, or
alternatively the firmware may generate an echo reference attached to
the SSP and dailink used for the amplifier.

To avoid any issues with invalid/NULL substreams in the latter case,
always unconditionally set dpcm_capture.

Link: https://github.com/thesofproject/linux/issues/4083
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20230119163459.2235843-4-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

ASoC: Intel: sof_cs42l42: always set dpcm_capture for amplifiers

[ Upstream commit e0a52220344ab7defe25b9cdd58fe1dc1122e67c ]

The amplifier may provide hardware support for I/V feedback, or
alternatively the firmware may generate an echo reference attached to
the SSP and dailink used for the amplifier.

To avoid any issues with invalid/NULL substreams in the latter case,
always unconditionally set dpcm_capture.

Link: https://github.com/thesofproject/linux/issues/4083
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20230119163459.2235843-3-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

ASoC: Intel: sof_rt5682: always set dpcm_capture for amplifiers

[ Upstream commit 324f065cdbaba1b879a63bf07e61ca156b789537 ]

The amplifier may provide hardware support for I/V feedback, or
alternatively the firmware may generate an echo reference attached to
the SSP and dailink used for the amplifier.

To avoid any issues with invalid/NULL substreams in the latter case,
always unconditionally set dpcm_capture.

Link: https://github.com/thesofproject/linux/issues/4083
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20230119163459.2235843-2-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

ALSA: usb-audio: Add FIXED_RATE quirk for JBL Quantum610 Wireless

[ Upstream commit dfd5fe19db7dc7006642f8109ee8965e5d031897 ]

JBL Quantum610 Wireless (0ecb:205c) requires the same workaround that
was used for JBL Quantum810 for limiting the sample rate.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=216798
Link: https://lore.kernel.org/r/20230118165947.22317-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

ASoC: SOF: sof-audio: start with the right widget type

[ Upstream commit fcc4348adafe53928fda46d104c1798e5a4de4ff ]

If there is a connection between a playback stream and a capture stream,
all widgets that are connected to the playback stream and the capture
stream will be in the list.
So, we have to start with the exactly right widget type.
snd_soc_dapm_aif_out is for capture stream and a playback stream should
start with a snd_soc_dapm_aif_in widget.
Contrarily, snd_soc_dapm_dai_in is for playback stream, and a capture
stream should start with a snd_soc_dapm_dai_out widget.

Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230117123534.2075-1-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

ASoC: amd: yc: Add DMI support for new acer/emdoor platforms

[ Upstream commit 7fd26a27680aa9032920f798a5a8b38a2c61075f ]

Adding DMI entries to support new acer/emdoor platforms.

Suggested-by: shanshengwang <shansheng.wang@amd.com>
Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@amd.com>
Link: https://lore.kernel.org/r/20230111102130.2276391-1-Syed.SabaKareem@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

btrfs: lock the inode in shared mode before starting fiemap

[ Upstream commit 519b7e13b5ae8dd38da1e52275705343be6bb508 ]

Currently fiemap does not take the inode's lock (VFS lock), it only locks
a file range in the inode's io tree. This however can lead to a deadlock
if we have a concurrent fsync on the file and fiemap code triggers a fault
when accessing the user space buffer with fiemap_fill_next_extent(). The
deadlock happens on the inode's i_mmap_lock semaphore, which is taken both
by fsync and btrfs_page_mkwrite(). This deadlock was recently reported by
syzbot and triggers a trace like the following:

   task:syz-executor361 state:D stack:20264 pid:5668  ppid:5119   flags:0x00004004
   Call Trace:
    <TASK>
    context_switch kernel/sched/core.c:5293 [inline]
    __schedule+0x995/0xe20 kernel/sched/core.c:6606
    schedule+0xcb/0x190 kernel/sched/core.c:6682
    wait_on_state fs/btrfs/extent-io-tree.c:707 [inline]
    wait_extent_bit+0x577/0x6f0 fs/btrfs/extent-io-tree.c:751
    lock_extent+0x1c2/0x280 fs/btrfs/extent-io-tree.c:1742
    find_lock_delalloc_range+0x4e6/0x9c0 fs/btrfs/extent_io.c:488
    writepage_delalloc+0x1ef/0x540 fs/btrfs/extent_io.c:1863
    __extent_writepage+0x736/0x14e0 fs/btrfs/extent_io.c:2174
    extent_write_cache_pages+0x983/0x1220 fs/btrfs/extent_io.c:3091
    extent_writepages+0x219/0x540 fs/btrfs/extent_io.c:3211
    do_writepages+0x3c3/0x680 mm/page-writeback.c:2581
    filemap_fdatawrite_wbc+0x11e/0x170 mm/filemap.c:388
    __filemap_fdatawrite_range mm/filemap.c:421 [inline]
    filemap_fdatawrite_range+0x175/0x200 mm/filemap.c:439
    btrfs_fdatawrite_range fs/btrfs/file.c:3850 [inline]
    start_ordered_ops fs/btrfs/file.c:1737 [inline]
    btrfs_sync_file+0x4ff/0x1190 fs/btrfs/file.c:1839
    generic_write_sync include/linux/fs.h:2885 [inline]
    btrfs_do_write_iter+0xcd3/0x1280 fs/btrfs/file.c:1684
    call_write_iter include/linux/fs.h:2189 [inline]
    new_sync_write fs/read_write.c:491 [inline]
    vfs_write+0x7dc/0xc50 fs/read_write.c:584
    ksys_write+0x177/0x2a0 fs/read_write.c:637
    do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
    entry_SYSCALL_64_after_hwframe+0x63/0xcd
   RIP: 0033:0x7f7d4054e9b9
   RSP: 002b:00007f7d404fa2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
   RAX: ffffffffffffffda RBX: 00007f7d405d87a0 RCX: 00007f7d4054e9b9
   RDX: 0000000000000090 RSI: 0000000020000000 RDI: 0000000000000006
   RBP: 00007f7d405a51d0 R08: 0000000000000000 R09: 0000000000000000
   R10: 0000000000000000 R11: 0000000000000246 R12: 61635f65646f6e69
   R13: 65646f7475616f6e R14: 7261637369646f6e R15: 00007f7d405d87a8
    </TASK>
   INFO: task syz-executor361:5697 blocked for more than 145 seconds.
         Not tainted 6.2.0-rc3-syzkaller-00376-g7c6984405241 #0
   "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
   task:syz-executor361 state:D stack:21216 pid:5697  ppid:5119   flags:0x00004004
   Call Trace:
    <TASK>
    context_switch kernel/sched/core.c:5293 [inline]
    __schedule+0x995/0xe20 kernel/sched/core.c:6606
    schedule+0xcb/0x190 kernel/sched/core.c:6682
    rwsem_down_read_slowpath+0x5f9/0x930 kernel/locking/rwsem.c:1095
    __down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1260
    btrfs_page_mkwrite+0x417/0xc80 fs/btrfs/inode.c:8526
    do_page_mkwrite+0x19e/0x5e0 mm/memory.c:2947
    wp_page_shared+0x15e/0x380 mm/memory.c:3295
    handle_pte_fault mm/memory.c:4949 [inline]
    __handle_mm_fault mm/memory.c:5073 [inline]
    handle_mm_fault+0x1b79/0x26b0 mm/memory.c:5219
    do_user_addr_fault+0x69b/0xcb0 arch/x86/mm/fault.c:1428
    handle_page_fault arch/x86/mm/fault.c:1519 [inline]
    exc_page_fault+0x7a/0x110 arch/x86/mm/fault.c:1575
    asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
   RIP: 0010:copy_user_short_string+0xd/0x40 arch/x86/lib/copy_user_64.S:233
   Code: 74 0a 89 (...)
   RSP: 0018:ffffc9000570f330 EFLAGS: 00050202
   RAX: ffffffff843e6601 RBX: 00007fffffffefc8 RCX: 0000000000000007
   RDX: 0000000000000000 RSI: ffffc9000570f3e0 RDI: 0000000020000120
   RBP: ffffc9000570f490 R08: 0000000000000000 R09: fffff52000ae1e83
   R10: fffff52000ae1e83 R11: 1ffff92000ae1e7c R12: 0000000000000038
   R13: ffffc9000570f3e0 R14: 0000000020000120 R15: ffffc9000570f3e0
    copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
    raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline]
    _copy_to_user+0xe9/0x130 lib/usercopy.c:34
    copy_to_user include/linux/uaccess.h:169 [inline]
    fiemap_fill_next_extent+0x22e/0x410 fs/ioctl.c:144
    emit_fiemap_extent+0x22d/0x3c0 fs/btrfs/extent_io.c:3458
    fiemap_process_hole+0xa00/0xad0 fs/btrfs/extent_io.c:3716
    extent_fiemap+0xe27/0x2100 fs/btrfs/extent_io.c:3922
    btrfs_fiemap+0x172/0x1e0 fs/btrfs/inode.c:8209
    ioctl_fiemap fs/ioctl.c:219 [inline]
    do_vfs_ioctl+0x185b/0x2980 fs/ioctl.c:810
    __do_sys_ioctl fs/ioctl.c:868 [inline]
    __se_sys_ioctl+0x83/0x170 fs/ioctl.c:856
    do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
    entry_SYSCALL_64_after_hwframe+0x63/0xcd
   RIP: 0033:0x7f7d4054e9b9
   RSP: 002b:00007f7d390d92f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
   RAX: ffffffffffffffda RBX: 00007f7d405d87b0 RCX: 00007f7d4054e9b9
   RDX: 0000000020000100 RSI: 00000000c020660b RDI: 0000000000000005
   RBP: 00007f7d405a51d0 R08: 00007f7d390d9700 R09: 0000000000000000
   R10: 00007f7d390d9700 R11: 0000000000000246 R12: 61635f65646f6e69
   R13: 65646f7475616f6e R14: 7261637369646f6e R15: 00007f7d405d87b8
    </TASK>

What happens is the following:

1) Task A is doing an fsync, enters btrfs_sync_file() and flushes delalloc
   before locking the inode and the i_mmap_lock semaphore, that is, before
   calling btrfs_inode_lock();

2) After task A flushes delalloc and before it calls btrfs_inode_lock(),
   another task dirties a page;

3) Task B starts a fiemap without FIEMAP_FLAG_SYNC, so the page dirtied
   at step 2 remains dirty and unflushed. Then when it enters
   extent_fiemap() and it locks a file range that includes the range of
   the page dirtied in step 2;

4) Task A calls btrfs_inode_lock() and locks the inode (VFS lock) and the
   inode's i_mmap_lock semaphore in write mode. Then it tries to flush
   delalloc by calling start_ordered_ops(), which will block, at
   find_lock_delalloc_range(), when trying to lock the range of the page
   dirtied at step 2, since this range was locked by the fiemap task (at
   step 3);

5) Task B generates a page fault when accessing the user space fiemap
   buffer with a call to fiemap_fill_next_extent().

   The fault handler needs to call btrfs_page_mkwrite() for some other
   page of our inode, and there we deadlock when trying to lock the
   inode's i_mmap_lock semaphore in read mode, since the fsync task locked
   it in write mode (step 4) and the fsync task can not progress because
   it's waiting to lock a file range that is currently locked by us (the
   fiemap task, step 3).

Fix this by taking the inode's lock (VFS lock) in shared mode when
entering fiemap. This effectively serializes fiemap with fsync (except the
most expensive part of fsync, the log sync), preventing this deadlock.

Reported-by: syzbot+cc35f55c41e34c30dcb5@syzkaller.appspotmail.com
Link: https://lore.kernel.org/linux-btrfs/00000000000032dc7305f2a66f46@google.com/
CC: stable@vger.kernel.org # 6.1+
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

btrfs: move the auto defrag code to defrag.c

[ Upstream commit 6e3df18ba7e8e68015dd66bcab326a4b7aaed085 ]

This currently exists in file.c, move it to the more natural location in
defrag.c.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
[ reformat comments ]
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Stable-dep-of: 519b7e13b5ae ("btrfs: lock the inode in shared mode before starting fiemap")
Signed-off-by: Sasha Levin <sashal@kernel.org>

mptcp: fix locking for in-kernel listener creation

[ Upstream commit ad2171009d968104ccda9dc517f5a3ba891515db ]

For consistency, in mptcp_pm_nl_create_listen_socket(), we need to
call the __mptcp_nmpc_socket() under the msk socket lock.

Note that as a side effect, mptcp_subflow_create_socket() needs a
'nested' lockdep annotation, as it will acquire the subflow (kernel)
socket lock under the in-kernel listener msk socket lock.

The current lack of locking is almost harmless, because the relevant
socket is not exposed to the user space, but in future we will add
more complexity to the mentioned helper, let's play safe.

Fixes: 1729cf186d8a ("mptcp: create the listening socket for new port")
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

mptcp: deduplicate error paths on endpoint creation

[ Upstream commit 976d302fb6165ad620778d7ba834cde6e3fe9f9f ]

When endpoint creation fails, we need to free the newly allocated
entry and eventually destroy the paired mptcp listener socket.

Consolidate such action in a single point let all the errors path
reach it.

Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: ad2171009d96 ("mptcp: fix locking for in-kernel listener creation")
Signed-off-by: Sasha Levin <sashal@kernel.org>

mptcp: fix locking for setsockopt corner-case

[ Upstream commit 21e43569685de4ad773fb060c11a15f3fd5e7ac4 ]

We need to call the __mptcp_nmpc_socket(), and later subflow socket
access under the msk socket lock, or e.g. a racing connect() could
change the socket status under the hood, with unexpected results.

Fixes: 54635bd04701 ("mptcp: add TCP_FASTOPEN_CONNECT socket option")
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

mptcp: sockopt: make 'tcp_fastopen_connect' generic

[ Upstream commit d3d429047cc66ff49780c93e4fccd9527723d385 ]

There are other socket options that need to act only on the first
subflow, e.g. all TCP_FASTOPEN* socket options.

This is similar to the getsockopt version.

In the next commit, this new mptcp_setsockopt_first_sf_only() helper is
used by other another option.

Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Stable-dep-of: 21e43569685d ("mptcp: fix locking for setsockopt corner-case")
Signed-off-by: Sasha Levin <sashal@kernel.org>

Linux 6.1.12

Link: https://lore.kernel.org/r/20230213144742.219399167@linuxfoundation.org
Tested-by: Ronald Warsow <rwarsow@gmx.de>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Allen Pais <apais@linux.microsoft.com>
Tested-by: Justin M. Forbes <jforbes@fedoraproject.org>
Tested-by: Shuah Khan <skhan@linuxfoundation.org>
Tested-by: Bagas Sanjaya <bagasdotme@gmail.com>
Tested-by: Ron Economos <re@w6rz.net>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Tested-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Tested-by: Salvatore Bonaccorso <carnil@debian.org>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/hw-vuln: Add documentation for Cross-Thread Return Predictions

commit 493a2c2d23ca91afba96ac32b6cbafb54382c2a3 upstream.

Add the admin guide for the Cross-Thread Return Predictions vulnerability.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Message-Id: <60f9c0b4396956ce70499ae180cb548720b25c7e.1675956146.git.thomas.lendacky@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

KVM: x86: Mitigate the cross-thread return address predictions bug

commit 6f0f2d5ef895d66a3f2b32dd05189ec34afa5a55 upstream.

By default, KVM/SVM will intercept attempts by the guest to transition
out of C0. However, the KVM_CAP_X86_DISABLE_EXITS capability can be used
by a VMM to change this behavior. To mitigate the cross-thread return
address predictions bug (X86_BUG_SMT_RSB), a VMM must not be allowed to
override the default behavior to intercept C0 transitions.

Use a module parameter to control the mitigation on processors that are
vulnerable to X86_BUG_SMT_RSB. If the processor is vulnerable to the
X86_BUG_SMT_RSB bug and the module parameter is set to mitigate the bug,
KVM will not allow the disabling of the HLT, MWAIT and CSTATE exits.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Message-Id: <4019348b5e07148eb4d593380a5f6713b93c9a16.1675956146.git.thomas.lendacky@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

x86/speculation: Identify processors vulnerable to SMT RSB predictions

commit be8de49bea505e7777a69ef63d60e02ac1712683 upstream.

Certain AMD processors are vulnerable to a cross-thread return address
predictions bug. When running in SMT mode and one of the sibling threads
transitions out of C0 state, the other sibling thread could use return
target predictions from the sibling thread that transitioned out of C0.

The Spectre v2 mitigations cover the Linux kernel, as it fills the RSB
when context switching to the idle thread. However, KVM allows a VMM to
prevent exiting guest mode when transitioning out of C0. A guest could
act maliciously in this situation, so create a new x86 BUG that can be
used to detect if the processor is vulnerable.

Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Message-Id: <91cec885656ca1fcd4f0185ce403a53dd9edecb7.1675956146.git.thomas.lendacky@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drm/i915: Fix VBT DSI DVO port handling

commit 6a7ff131f17f44c593173c5ee30e2c03ef211685 upstream.

Turns out modern (icl+) VBTs still declare their DSI ports
as MIPI-A and MIPI-C despite the PHYs now being A and B.
Remap appropriately to allow the panels declared as MIPI-C
to work.

Cc: stable@vger.kernel.org
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8016
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230207064337.18697-2-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 118b5c136c04da705b274b0d39982bb8b7430fc5)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drm/i915: Initialize the obj flags for shmem objects

commit 44e4c5684fcc82d8f099656c4ea39d9571e2a8ac upstream.

Obj flags for shmem objects is not being set correctly. Fixes in setting
BO_ALLOC_USER flag which applies to shmem objs as well.

v2: Add fixes tag (Tvrtko, Matt A)

Fixes: 13d29c823738 ("drm/i915/ehl: unconditionally flush the pages on acquire")
Cc: <stable@vger.kernel.org> # v5.15+
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Aravind Iddamsetty <aravind.iddamsetty@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
[tursulin: Grouped all tags together.]
Link: https://patchwork.freedesktop.org/patch/msgid/20230203135205.4051149-1-aravind.iddamsetty@intel.com
(cherry picked from commit bca0d1d3ceeb07be45a51c0fa4d57a0ce31b6aed)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drm/i915: Move fd_install after last use of fence

commit 251e8c5b1b1fadcc387a8e618c7437d330bdac3e upstream.

Because eb_composite_fence_create() drops the fence_array reference
after creation of the sync_file, only the sync_file holds a ref to the
fence.  But fd_install() makes that reference visable to userspace, so
it must be the last thing we do with the fence.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Fixes: 00dae4d3d35d ("drm/i915: Implement SINGLE_TIMELINE with a syncobj (v4)")
Cc: <stable@vger.kernel.org> # v5.15+
[tursulin: Added stable tag.]
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230203164937.4035503-1-robdclark@gmail.com
(cherry picked from commit 960dafa30455450d318756a9896a02727f2639e0)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drm/amd/display: fix cursor offset on rotation 180

commit 49d0555976f0972af68397ed996375c135b38ba7 upstream.

Cursor gets clipped off in the middle of the screen with hw rotation
180. Fix a miscalculation of cursor offset when it's placed near the
edges in the pipe split case.

Cursor bugs with hw rotation were reported on AMD issue tracker:
https://gitlab.freedesktop.org/drm/amd/-/issues/2247

The issues on rotation 270 was fixed by:
https://lore.kernel.org/amd-gfx/20221118125935.4013669-22-Brian.Chang@amd.com/
that partially addressed the rotation 180 too. So, this patch is the
final bits for rotation 180.

Reported-by: Xaver Hugl <xaver.hugl@gmail.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Fixes: 9d84c7ef8a87 ("drm/amd/display: Correct cursor position on horizontal mirror")
Signed-off-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drm/amd/display: properly handling AGP aperture in vm setup

commit 5c4e8c71d1202cd84d870e7e5cb8d6b52f9c3507 upstream.

Take into account whether or not the AGP aperture is
enabled or not when calculating the system aperture.

Fixes white screens with DCN 3.1.4.

Based on a patch from Yifan Zhang <yifan1.zhang@amd.com>

Cc: Yifan Zhang <yifan1.zhang@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.1.x
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drm/amdgpu/smu: skip pptable init under sriov

commit c6ac406cd8ff610a2d5da298b1d3071acfcde7f0 upstream.

sriov does not need to init pptable from amdgpu driver
we finish it from PF

Signed-off-by: Jane Jian <Jane.Jian@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.1.x
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drm/amdgpu/fence: Fix oops due to non-matching drm_sched init/fini

commit 5ad7bbf3dba5c4a684338df1f285080f2588b535 upstream.

Currently amdgpu calls drm_sched_fini() from the fence driver sw fini
routine - such function is expected to be called only after the
respective init function - drm_sched_init() - was executed successfully.

Happens that we faced a driver probe failure in the Steam Deck
recently, and the function drm_sched_fini() was called even without
its counter-part had been previously called, causing the following oops:

amdgpu: probe of 0000:04:00.0 failed with error -110
BUG: kernel NULL pointer dereference, address: 0000000000000090
PGD 0 P4D 0
Oops: 0002 [#1] PREEMPT SMP NOPTI
CPU: 0 PID: 609 Comm: systemd-udevd Not tainted 6.2.0-rc3-gpiccoli #338
Hardware name: Valve Jupiter/Jupiter, BIOS F7A0113 11/04/2022
RIP: 0010:drm_sched_fini+0x84/0xa0 [gpu_sched]
[...]
Call Trace:
 <TASK>
 amdgpu_fence_driver_sw_fini+0xc8/0xd0 [amdgpu]
 amdgpu_device_fini_sw+0x2b/0x3b0 [amdgpu]
 amdgpu_driver_release_kms+0x16/0x30 [amdgpu]
 devm_drm_dev_init_release+0x49/0x70
 [...]

To prevent that, check if the drm_sched was properly initialized for a
given ring before calling its fini counter-part.

Notice ideally we'd use sched.ready for that; such field is set as the latest
thing on drm_sched_init(). But amdgpu seems to "override" the meaning of such
field - in the above oops for example, it was a GFX ring causing the crash, and
the sched.ready field was set to true in the ring init routine, regardless of
the state of the DRM scheduler. Hence, we ended-up using sched.ops as per
Christian's suggestion [0], and also removed the no_scheduler check [1].

[0] https://lore.kernel.org/amd-gfx/984ee981-2906-0eaf-ccec-9f80975cb136@amd.com/
[1] https://lore.kernel.org/amd-gfx/cd0e2994-f85f-d837-609f-7056d5fb7231@amd.com/

Fixes: 067f44c8b459 ("drm/amdgpu: avoid over-handle of fence driver fini in s3 test (v2)")
Suggested-by: Christian König <christian.koenig@amd.com>
Cc: Guchun Chen <guchun.chen@amd.com>
Cc: Luben Tuikov <luben.tuikov@amd.com>
Cc: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Luben Tuikov <luben.tuikov@amd.com>
Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drm/amd/pm: bump SMU 13.0.7 driver_if header version

commit dc38b996db968f51f0fe45845a519c5cd7f6bd04 upstream.

This can suppress the warning caused by version mismatch.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.1.x
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drm/amdgpu: Add unique_id support for GC 11.0.1/2

commit c108a18462949fe709ebd6b0be68398d643bc285 upstream.

These can support unique_id, so create the sysfs file for them

Signed-off-by: Kent Russell <kent.russell@amd.com>
Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.1.x
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drm/amd/pm: bump SMU 13.0.0 driver_if header version

commit 9874cc2df4e892c8744aa0472866cbf7c3cf1862 upstream.

This can suppress the warning caused by version mismatch.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.1.x
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arm64: efi: Force the use of SetVirtualAddressMap() on eMAG and Altra Max machines

commit 190233164cd77115f8dea718cbac561f557092c6 upstream.

Commit 550b33cfd445 ("arm64: efi: Force the use of SetVirtualAddressMap()
on Altra machines") identifies the Altra family via the family field in
the type#1 SMBIOS record. eMAG and Altra Max machines are similarly
affected but not detected with the strict strcmp test.

The type1_family smbios string is not an entirely reliable means of
identifying systems with this issue as OEMs can, and do, use their own
strings for these fields. However, until we have a better solution,
capture the bulk of these systems by adding strcmp matching for "eMAG"
and "Altra Max".

Fixes: 550b33cfd445 ("arm64: efi: Force the use of SetVirtualAddressMap() on Altra machines")
Cc: <stable@vger.kernel.org> # 6.1.x
Cc: Alexandru Elisei <alexandru.elisei@gmail.com>
Signed-off-by: Darren Hart <darren@os.amperecomputing.com>
Tested-by: Justin He <justin.he@arm.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fix page corruption caused by racy check in __free_pages

commit 462a8e08e0e6287e5ce13187257edbf24213ed03 upstream.

When we upgraded our kernel, we started seeing some page corruption like
the following consistently:

  BUG: Bad page state in process ganesha.nfsd  pfn:1304ca
  page:0000000022261c55 refcount:0 mapcount:-128 mapping:0000000000000000 index:0x0 pfn:0x1304ca
  flags: 0x17ffffc0000000()
  raw: 0017ffffc0000000 ffff8a513ffd4c98 ffffeee24b35ec08 0000000000000000
  raw: 0000000000000000 0000000000000001 00000000ffffff7f 0000000000000000
  page dumped because: nonzero mapcount
  CPU: 0 PID: 15567 Comm: ganesha.nfsd Kdump: loaded Tainted: P    B      O      5.10.158-1.nutanix.20221209.el7.x86_64 #1
  Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 04/05/2016
  Call Trace:
   dump_stack+0x74/0x96
   bad_page.cold+0x63/0x94
   check_new_page_bad+0x6d/0x80
   rmqueue+0x46e/0x970
   get_page_from_freelist+0xcb/0x3f0
   ? _cond_resched+0x19/0x40
   __alloc_pages_nodemask+0x164/0x300
   alloc_pages_current+0x87/0xf0
   skb_page_frag_refill+0x84/0x110
   ...

Sometimes, it would also show up as corruption in the free list pointer
and cause crashes.

After bisecting the issue, we found the issue started from commit
e320d3012d25 ("mm/page_alloc.c: fix freeing non-compound pages"):

if (put_page_testzero(page))
free_the_page(page, order);
else if (!PageHead(page))
while (order-- > 0)
free_the_page(page + (1 << order), order);

So the problem is the check PageHead is racy because at this point we
already dropped our reference to the page.  So even if we came in with
compound page, the page can already be freed and PageHead can return
false and we will end up freeing all the tail pages causing double free.

Fixes: e320d3012d25 ("mm/page_alloc.c: fix freeing non-compound pages")
Link: https://lore.kernel.org/lkml/BYAPR02MB448855960A9656EEA81141FC94D99@BYAPR02MB4488.namprd02.prod.outlook.com/
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: stable@vger.kernel.org
Signed-off-by: Chunwei Chen <david.chen@nutanix.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arm64: dts: meson-axg: Make mmc host controller interrupts level-sensitive

commit d182bcf300772d8b2e5f43e47fa0ebda2b767cc4 upstream.

The usage of edge-triggered interrupts lead to lost interrupts under load,
see [0]. This was confirmed to be fixed by using level-triggered
interrupts.
The report was about SDIO. However, as the host controller is the same
for SD and MMC, apply the change to all mmc controller instances.

[0] https://www.spinics.net/lists/linux-mmc/msg73991.html

Fixes: 221cf34bac54 ("ARM64: dts: meson-axg: enable the eMMC controller")
Reported-by: Peter Suti <peter.suti@streamunlimited.com>
Tested-by: Vyacheslav Bocharov <adeep@lexina.in>
Tested-by: Peter Suti <peter.suti@streamunlimited.com>
Cc: stable@vger.kernel.org
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/c00655d3-02f8-6f5f-4239-ca2412420cad@gmail.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arm64: dts: meson-g12-common: Make mmc host controller interrupts level-sensitive

commit ac8db4cceed218cca21c84f9d75ce88182d8b04f upstream.

The usage of edge-triggered interrupts lead to lost interrupts under load,
see [0]. This was confirmed to be fixed by using level-triggered
interrupts.
The report was about SDIO. However, as the host controller is the same
for SD and MMC, apply the change to all mmc controller instances.

[0] https://www.spinics.net/lists/linux-mmc/msg73991.html

Fixes: 4759fd87b928 ("arm64: dts: meson: g12a: add mmc nodes")
Tested-by: FUKAUMI Naoki <naoki@radxa.com>
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Jerome Brunet <jbrunet@baylibre.com>
Cc: stable@vger.kernel.org
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/27d89baa-b8fa-baca-541b-ef17a97cde3c@gmail.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arm64: dts: meson-gx: Make mmc host controller interrupts level-sensitive

commit 66e45351f7d6798751f98001d1fcd572024d87f0 upstream.

The usage of edge-triggered interrupts lead to lost interrupts under load,
see [0]. This was confirmed to be fixed by using level-triggered
interrupts.
The report was about SDIO. However, as the host controller is the same
for SD and MMC, apply the change to all mmc controller instances.

[0] https://www.spinics.net/lists/linux-mmc/msg73991.html

Fixes: ef8d2ffedf18 ("ARM64: dts: meson-gxbb: add MMC support")
Cc: stable@vger.kernel.org
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/76e042e0-a610-5ed5-209f-c4d7f879df44@gmail.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

rtmutex: Ensure that the top waiter is always woken up

commit db370a8b9f67ae5f17e3d5482493294467784504 upstream.

Let L1 and L2 be two spinlocks.

Let T1 be a task holding L1 and blocked on L2. T1, currently, is the top
waiter of L2.

Let T2 be the task holding L2.

Let T3 be a task trying to acquire L1.

The following events will lead to a state in which the wait queue of L2
isn't empty, but no task actually holds the lock.

T1                T2                                  T3
==                ==                                  ==

                                                      spin_lock(L1)
                                                      | raw_spin_lock(L1->wait_lock)
                                                      | rtlock_slowlock_locked(L1)
                                                      | | task_blocks_on_rt_mutex(L1, T3)
                                                      | | | orig_waiter->lock = L1
                                                      | | | orig_waiter->task = T3
                                                      | | | raw_spin_unlock(L1->wait_lock)
                                                      | | | rt_mutex_adjust_prio_chain(T1, L1, L2, orig_waiter, T3)
                  spin_unlock(L2)                     | | | |
                  | rt_mutex_slowunlock(L2)           | | | |
                  | | raw_spin_lock(L2->wait_lock)    | | | |
                  | | wakeup(T1)                      | | | |
                  | | raw_spin_unlock(L2->wait_lock)  | | | |
                                                      | | | | waiter = T1->pi_blocked_on
                                                      | | | | waiter == rt_mutex_top_waiter(L2)
                                                      | | | | waiter->task == T1
                                                      | | | | raw_spin_lock(L2->wait_lock)
                                                      | | | | dequeue(L2, waiter)
                                                      | | | | update_prio(waiter, T1)
                                                      | | | | enqueue(L2, waiter)
                                                      | | | | waiter != rt_mutex_top_waiter(L2)
                                                      | | | | L2->owner == NULL
                                                      | | | | wakeup(T1)
                                                      | | | | raw_spin_unlock(L2->wait_lock)
T1 wakes up
T1 != top_waiter(L2)
schedule_rtlock()

If the deadline of T1 is updated before the call to update_prio(), and the
new deadline is greater than the deadline of the second top waiter, then
after the requeue, T1 is no longer the top waiter, and the wrong task is
woken up which will then go back to sleep because it is not the top waiter.

This can be reproduced in PREEMPT_RT with stress-ng:

while true; do
    stress-ng --sched deadline --sched-period 1000000000 \
         --sched-runtime 800000000 --sched-deadline \
         1000000000 --mmapfork 23 -t 20
done

A similar issue was pointed out by Thomas versus the cases where the top
waiter drops out early due to a signal or timeout, which is a general issue
for all regular rtmutex use cases, e.g. futex.

The problematic code is in rt_mutex_adjust_prio_chain():

     // Save the top waiter before dequeue/enqueue
prerequeue_top_waiter = rt_mutex_top_waiter(lock);

rt_mutex_dequeue(lock, waiter);
waiter_update_prio(waiter, task);
rt_mutex_enqueue(lock, waiter);

// Lock has no owner?
if (!rt_mutex_owner(lock)) {
    // Top waiter changed
  ----> if (prerequeue_top_waiter != rt_mutex_top_waiter(lock))
  ----> wake_up_state(waiter->task, waiter->wake_state);

This only takes the case into account where @waiter is the new top waiter
due to the requeue operation.

But it fails to handle the case where @waiter is not longer the top
waiter due to the requeue operation.

Ensure that the new top waiter is woken up so in all cases so it can take
over the ownerless lock.

[ tglx: Amend changelog, add Fixes tag ]

Fixes: c014ef69b3ac ("locking/rtmutex: Add wake_state to rt_mutex_waiter")
Signed-off-by: Wander Lairson Costa <wander@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230117172649.52465-1-wander@redhat.com
Link: https://lore.kernel.org/r/20230202123020.14844-1-wander@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

tracing: Fix TASK_COMM_LEN in trace event format file

commit b6c7abd1c28a63ad633433d037ee15a1bc3023ba upstream.

After commit 3087c61ed2c4 ("tools/testing/selftests/bpf: replace open-coded 16 with TASK_COMM_LEN"),
the content of the format file under
/sys/kernel/tracing/events/task/task_newtask was changed from
  field:char comm[16];    offset:12;    size:16;    signed:0;
to
  field:char comm[TASK_COMM_LEN];    offset:12;    size:16;    signed:0;

John reported that this change breaks older versions of perfetto.
Then Mathieu pointed out that this behavioral change was caused by the
use of __stringify(_len), which happens to work on macros, but not on enum
labels. And he also gave the suggestion on how to fix it:
  :One possible solution to make this more robust would be to extend
  :struct trace_event_fields with one more field that indicates the length
  :of an array as an actual integer, without storing it in its stringified
  :form in the type, and do the formatting in f_show where it belongs.

The result as follows after this change,
$ cat /sys/kernel/tracing/events/task/task_newtask/format
        field:char comm[16];    offset:12;      size:16;        signed:0;

Link: https://lore.kernel.org/lkml/Y+QaZtz55LIirsUO@google.com/
Link: https://lore.kernel.org/linux-trace-kernel/20230210155921.4610-1-laoar.shao@gmail.com/
Link: https://lore.kernel.org/linux-trace-kernel/20230212151303.12353-1-laoar.shao@gmail.com
Cc: stable@vger.kernel.org
Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Kajetan Puchalski <kajetan.puchalski@arm.com>
CC: Qais Yousef <qyousef@layalina.io>
Fixes: 3087c61ed2c4 ("tools/testing/selftests/bpf: replace open-coded 16 with TASK_COMM_LEN")
Reported-by: John Stultz <jstultz@google.com>
Debugged-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Suggested-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drm/amdgpu: Use the TGID for trace_amdgpu_vm_update_ptes

commit e53448e0a1efa5133c7db78f1df1f4caf177676b upstream.

The pid field corresponds to the result of gettid() in userspace.
However, userspace cannot reliably attribute PTE events to processes
with just the thread id. This patch allows userspace to easily
attribute PTE update events to specific processes by comparing this
field with the result of getpid().

For attributing events to specific threads, the thread id is also
contained in the common fields of each trace event.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Friedrich Vock <friedrich.vock@gmx.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

powerpc/64s/interrupt: Fix interrupt exit race with security mitigation switch

commit 2ea31e2e62bbc4d11c411eeb36f1b02841dbcab1 upstream.

The RFI and STF security mitigation options can flip the
interrupt_exit_not_reentrant static branch condition concurrently with
the interrupt exit code which tests that branch.

Interrupt exit tests this condition to set MSR[EE|RI] for exit, then
again in the case a soft-masked interrupt is found pending, to recover
the MSR so the interrupt can be replayed before attempting to exit
again. If the condition changes between these two tests, the MSR and irq
soft-mask state will become corrupted, leading to warnings and possible
crashes. For example, if the branch is initially true then false,
MSR[EE] will be 0 but PACA_IRQ_HARD_DIS clear and EE may not get
enabled, leading to warnings in irq_64.c.

Fixes: 13799748b957 ("powerpc/64: use interrupt restart table to speed up return from interrupt")
Cc: stable@vger.kernel.org # v5.14+
Reported-by: Sachin Sant <sachinp@linux.ibm.com>
Tested-by: Sachin Sant <sachinp@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20230206042240.92103-1-npiggin@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

riscv: kprobe: Fixup misaligned load text

commit eb7423273cc9922ee2d05bf660c034d7d515bb91 upstream.

The current kprobe would cause a misaligned load for the probe point.
This patch fixup it with two half-word loads instead.

Fixes: c22b0bcb1dd0 ("riscv: Add kprobes supported")
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Link: https://lore.kernel.org/linux-riscv/878rhig9zj.fsf@all.your.base.are.belong.to.us/
Reported-by: Bjorn Topel <bjorn.topel@gmail.com>
Reviewed-by: Björn Töpel <bjorn@kernel.org>
Link: https://lore.kernel.org/r/20230204063531.740220-1-guoren@kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

riscv: Fixup race condition on PG_dcache_clean in flush_icache_pte

commit 950b879b7f0251317d26bae0687e72592d607532 upstream.

In commit 588a513d3425 ("arm64: Fix race condition on PG_dcache_clean
in __sync_icache_dcache()"), we found RISC-V has the same issue as the
previous arm64. The previous implementation didn't guarantee the correct
sequence of operations, which means flush_icache_all() hasn't been
called when the PG_dcache_clean was set. That would cause a risk of page
synchronization.

Fixes: 08f051eda33b ("RISC-V: Flush I$ when making a dirty page executable")
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230127035306.1819561-1-guoren@kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

nvdimm: Support sizeof(struct page) > MAX_STRUCT_PAGE_SIZE

commit c91d713630848460de8669e6570307b7e559863b upstream.

Commit 6e9f05dc66f9 ("libnvdimm/pfn_dev: increase MAX_STRUCT_PAGE_SIZE")

...updated MAX_STRUCT_PAGE_SIZE to account for sizeof(struct page)
potentially doubling in the case of CONFIG_KMSAN=y. Unfortunately this
doubles the amount of capacity stolen from user addressable capacity for
everyone, regardless of whether they are using the debug option. Revert
that change, mandate that MAX_STRUCT_PAGE_SIZE never exceed 64, but
allow for debug scenarios to proceed with creating debug sized page maps
with a compile option to support debug scenarios.

Note that this only applies to cases where the page map is permanent,
i.e. stored in a reservation of the pmem itself ("--map=dev" in "ndctl
create-namespace" terms). For the "--map=mem" case, since the allocation
is ephemeral for the lifespan of the namespace, there are no explicit
restriction. However, the implicit restriction, of having enough
available "System RAM" to store the page map for the typically large
pmem, still applies.

Fixes: 6e9f05dc66f9 ("libnvdimm/pfn_dev: increase MAX_STRUCT_PAGE_SIZE")
Cc: <stable@vger.kernel.org>
Cc: Alexander Potapenko <glider@google.com>
Cc: Marco Elver <elver@google.com>
Reported-by: Jeff Moyer <jmoyer@redhat.com>
Acked-by: Yu Zhao <yuzhao@google.com>
Link: https://lore.kernel.org/r/167467815773.463042.7022545814443036382.stgit@dwillia2-xfh.jf.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

ceph: flush cap releases when the session is flushed

commit e7d84c6a1296d059389f7342d9b4b7defb518d3a upstream.

MDS expects the completed cap release prior to responding to the
session flush for cache drop.

Cc: stable@vger.kernel.org
Link: http://tracker.ceph.com/issues/38009
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Venky Shankar <vshankar@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drm/amd/pm: add SMU 13.0.7 missing GetPptLimit message mapping

commit 0e763afcb50814e256ecb780fcc0f3bade2e1a0c upstream.

Add missing GetPptLimit message mapping.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.1.x
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

pinctrl: qcom: sm8450-lpass-lpi: correct swr_rx_data group

commit 5921b250f43870e7d8044ca14e402292ceb3e3a8 upstream.

According to hardware programming guide, the swr_rx_data pin group has
only two pins (GPIO5 and GPIO6).  This is also visible in "struct
sm8450_groups" in the driver - GPIO15 does not have swr_rx_data
function.

Fixes: ec1652fc4d56 ("pinctrl: qcom: Add sm8450 lpass lpi pinctrl driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230203165054.390762-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

clk: ingenic: jz4760: Update M/N/OD calculation algorithm

commit ecfb9f404771dde909ce7743df954370933c3be2 upstream.

The previous algorithm was pretty broken.

- The inner loop had a '(m > m_max)' condition, and the value of 'm'
  would increase in each iteration;

- Each iteration would actually multiply 'm' by two, so it is not needed
  to re-compute the whole equation at each iteration;

- It would loop until (m & 1) == 0, which means it would loop at most
  once.

- The outer loop would divide the 'n' value by two at the end of each
  iteration. This meant that for a 12 MHz parent clock and a 1.2 GHz
  requested clock, it would first try n=12, then n=6, then n=3, then
  n=1, none of which would work; the only valid value is n=2 in this
  case.

Simplify this algorithm with a single for loop, which decrements 'n'
after each iteration, addressing all of the above problems.

Fixes: bdbfc029374f ("clk: ingenic: Add support for the JZ4760")
Cc: <stable@vger.kernel.org>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20221214123704.7305-1-paul@crapouillou.net
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

cxl/region: Fix passthrough-decoder detection

commit 711442e29f16f0d39dd0e2460c9baacfccb9d5a7 upstream.

A passthrough decoder is a decoder that maps only 1 target. It is a
special case because it does not impose any constraints on the
interleave-math as compared to a decoder with multiple targets. Extend
the passthrough case to multi-target-capable decoders that only have one
target selected. I.e. the current code was only considering passthrough
*ports* which are only a subset of the potential passthrough decoder
scenarios.

Fixes: e4f6dfa9ef75 ("cxl/region: Fix 'distance' calculation with passthrough ports")
Cc: <stable@vger.kernel.org>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/167564540422.847146.13816934143225777888.stgit@dwillia2-xfh.jf.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

cxl/region: Fix null pointer dereference for resetting decoder

commit 4fa4302d6dc7de7e8e74dc7405611a2efb4bf54b upstream.

Not all decoders have a reset callback.

The CXL specification allows a host bridge with a single root port to
have no explicit HDM decoders. Currently the region driver assumes there
are none.  As such the CXL core creates a special pass through decoder
instance without a commit/reset callback.

Prior to this patch, the ->reset() callback was called unconditionally when
calling cxl_region_decode_reset. Thus a configuration with 1 Host Bridge,
1 Root Port, and one directly attached CXL type 3 device or multiple CXL
type 3 devices attached to downstream ports of a switch can cause a null
pointer dereference.

Before the fix, a kernel crash was observed when we destroy the region, and
a pass through decoder is reset.

The issue can be reproduced as below,
    1) create a region with a CXL setup which includes a HB with a
    single root port under which a memdev is attached directly.
    2) destroy the region with cxl destroy-region regionX -f.

Fixes: 176baefb2eb5 ("cxl/hdm: Commit decoder state to hardware")
Cc: <stable@vger.kernel.org>
Signed-off-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Tested-by: Gregory Price <gregory.price@memverge.com>
Reviewed-by: Gregory Price <gregory.price@memverge.com>
Link: https://lore.kernel.org/r/20221215170909.2650271-1-fan.ni@samsung.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

usb: typec: altmodes/displayport: Fix probe pin assign check

commit 54e5c00a4eb0a4c663445b245f641bbfab142430 upstream.

While checking Pin Assignments of the port and partner during probe, we
don't take into account whether the peripheral is a plug or receptacle.

This manifests itself in a mode entry failure on certain docks and
dongles with captive cables. For instance, the Startech.com Type-C to DP
dongle (Model #CDP2DP) advertises its DP VDO as 0x405. This would fail
the Pin Assignment compatibility check, despite it supporting
Pin Assignment C as a UFP.

Update the check to use the correct DP Pin Assign macros that
take the peripheral's receptacle bit into account.

Fixes: c1e5c2f0cb8a ("usb: typec: altmodes/displayport: correct pin assignment for UFP receptacles")
Cc: stable@vger.kernel.org
Reported-by: Diana Zigterman <dzigterman@chromium.org>
Signed-off-by: Prashant Malani <pmalani@chromium.org>
Link: https://lore.kernel.org/r/20230208205318.131385-1-pmalani@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

usb: core: add quirk for Alcor Link AK9563 smartcard reader

commit 303e724d7b1e1a0a93daf0b1ab5f7c4f53543b34 upstream.

The Alcor Link AK9563 smartcard reader used on some Lenovo platforms
doesn't work. If LPM is enabled the reader will provide an invalid
usb config descriptor. Added quirk to disable LPM.

Verified fix on Lenovo P16 G1 and T14 G3

Tested-by: Miroslav Zatko <mzatko@mirexoft.com>
Tested-by: Dennis Wassenberg <dennis.wassenberg@secunet.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dennis Wassenberg <dennis.wassenberg@secunet.com>
Signed-off-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Link: https://lore.kernel.org/r/20230208181223.1092654-1-mpearson-lenovo@squebb.ca
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

btrfs: free device in btrfs_close_devices for a single device filesystem

commit 5f58d783fd7823b2c2d5954d1126e702f94bfc4c upstream.

We have this check to make sure we don't accidentally add older devices
that may have disappeared and re-appeared with an older generation from
being added to an fs_devices (such as a replace source device). This
makes sense, we don't want stale disks in our file system. However for
single disks this doesn't really make sense.

I've seen this in testing, but I was provided a reproducer from a
project that builds btrfs images on loopback devices. The loopback
device gets cached with the new generation, and then if it is re-used to
generate a new file system we'll fail to mount it because the new fs is
"older" than what we have in cache.

Fix this by freeing the cache when closing the device for a single device
filesystem. This will ensure that the mount command passed device path is
scanned successfully during the next mount.

CC: stable@vger.kernel.org # 5.10+
Reported-by: Daan De Meyer <daandemeyer@fb.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

btrfs: simplify update of last_dir_index_offset when logging a directory

commit 6afaed53cc9adde69d8a76ff5b4d740d5efbc54c upstream.

When logging a directory, we always set the inode's last_dir_index_offset
to the offset of the last dir index item we found. This is using an extra
field in the log context structure, and it makes more sense to update it
only after we insert dir index items, and we could directly update the
inode's last_dir_index_offset field instead.

So make this simpler by updating the inode's last_dir_index_offset only
when we actually insert dir index keys in the log tree, and getting rid
of the last_dir_item_offset field in the log context structure.

Reported-by: David Arendt <admin@prnet.org>
Link: https://lore.kernel.org/linux-btrfs/ae169fc6-f504-28f0-a098-6fa6a4dfb612@leemhuis.info/
Reported-by: Maxim Mikityanskiy <maxtram95@gmail.com>
Link: https://lore.kernel.org/linux-btrfs/Y8voyTXdnPDz8xwY@mail.gmail.com/
Reported-by: Hunter Wardlaw <wardlawhunter@gmail.com>
Link: https://bugzilla.suse.com/show_bug.cgi?id=1207231
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=216851
CC: stable@vger.kernel.org # 6.1+
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

selftests: mptcp: stop tests earlier

commit 070d6dafacbaa9d1f2e4e3edc263853d194af15e upstream.

These 'endpoint' tests from 'mptcp_join.sh' selftest start a transfer in
the background and check the status during this transfer.

Once the expected events have been recorded, there is no reason to wait
for the data transfer to finish. It can be stopped earlier to reduce the
execution time by more than half.

For these tests, the exchanged data were not verified. Errors, if any,
were ignored but that's fine, plenty of other tests are looking at that.
It is then OK to mute stderr now that we are sure errors will be printed
(and still ignored) because the transfer is stopped before the end.

Fixes: e274f7154008 ("selftests: mptcp: add subflow limits test-cases")
Cc: stable@vger.kernel.org
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

selftests: mptcp: allow more slack for slow test-case

commit a635a8c3df66ab68dc088c08a4e9e955e22c0e64 upstream.

A test-case is frequently failing on some extremely slow VMs.
The mptcp transfer completes before the script is able to do
all the required PM manipulation.

Address the issue in the simplest possible way, making the
transfer even more slow.

Additionally dump more info in case of failures, to help debugging
similar problems in the future and init dump_stats var.

Fixes: e274f7154008 ("selftests: mptcp: add subflow limits test-cases")
Cc: stable@vger.kernel.org
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/323
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

mptcp: be careful on subflow status propagation on errors

commit 1249db44a102d9d3541ed7798d4b01ffdcf03524 upstream.

Currently the subflow error report callback unconditionally
propagates the fallback subflow status to the owning msk.

If the msk is already orphaned, the above prevents the code
from correctly tracking the msk moving to the TCP_CLOSE state
and doing the appropriate cleanup.

All the above causes increasing memory usage over time and
sporadic self-tests failures.

There is a great deal of infrastructure trying to propagate
correctly the fallback subflow status to the owning mptcp socket,
e.g. via mptcp_subflow_eof() and subflow_sched_work_if_closed():
in the error propagation path we need only to cope with unorphaned
sockets.

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/339
Fixes: 15cc10453398 ("mptcp: deliver ssk errors to msk")
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

mptcp: do not wait for bare sockets' timeout

commit d4e85922e3e7ef2071f91f65e61629b60f3a9cf4 upstream.

If the peer closes all the existing subflows for a given
mptcp socket and later the application closes it, the current
implementation let it survive until the timewait timeout expires.

While the above is allowed by the protocol specification it
consumes resources for almost no reason and additionally
causes sporadic self-tests failures.

Let's move the mptcp socket to the TCP_CLOSE state when there are
no alive subflows at close time, so that the allocated resources
will be freed immediately.

Fixes: e16163b6e2b7 ("mptcp: refactor shutdown and close")
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

net: USB: Fix wrong-direction WARNING in plusb.c

commit 811d581194f7412eda97acc03d17fc77824b561f upstream.

The syzbot fuzzer detected a bug in the plusb network driver: A
zero-length control-OUT transfer was treated as a read instead of a
write.  In modern kernels this error provokes a WARNING:

usb 1-1: BOGUS control dir, pipe 80000280 doesn't match bRequestType c0
WARNING: CPU: 0 PID: 4645 at drivers/usb/core/urb.c:411
usb_submit_urb+0x14a7/0x1880 drivers/usb/core/urb.c:411
Modules linked in:
CPU: 1 PID: 4645 Comm: dhcpcd Not tainted
6.2.0-rc6-syzkaller-00050-g9f266ccaa2f5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google
01/12/2023
RIP: 0010:usb_submit_urb+0x14a7/0x1880 drivers/usb/core/urb.c:411
...
Call Trace:
 <TASK>
 usb_start_wait_urb+0x101/0x4b0 drivers/usb/core/message.c:58
 usb_internal_control_msg drivers/usb/core/message.c:102 [inline]
 usb_control_msg+0x320/0x4a0 drivers/usb/core/message.c:153
 __usbnet_read_cmd+0xb9/0x390 drivers/net/usb/usbnet.c:2010
 usbnet_read_cmd+0x96/0xf0 drivers/net/usb/usbnet.c:2068
 pl_vendor_req drivers/net/usb/plusb.c:60 [inline]
 pl_set_QuickLink_features drivers/net/usb/plusb.c:75 [inline]
 pl_reset+0x2f/0xf0 drivers/net/usb/plusb.c:85
 usbnet_open+0xcc/0x5d0 drivers/net/usb/usbnet.c:889
 __dev_open+0x297/0x4d0 net/core/dev.c:1417
 __dev_change_flags+0x587/0x750 net/core/dev.c:8530
 dev_change_flags+0x97/0x170 net/core/dev.c:8602
 devinet_ioctl+0x15a2/0x1d70 net/ipv4/devinet.c:1147
 inet_ioctl+0x33f/0x380 net/ipv4/af_inet.c:979
 sock_do_ioctl+0xcc/0x230 net/socket.c:1169
 sock_ioctl+0x1f8/0x680 net/socket.c:1286
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The fix is to call usbnet_write_cmd() instead of usbnet_read_cmd() and
remove the USB_DIR_IN flag.

Reported-and-tested-by: syzbot+2a0e7abd24f1eb90ce25@syzkaller.appspotmail.com
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Fixes: 090ffa9d0e90 ("[PATCH] USB: usbnet (9/9) module for pl2301/2302 cables")
CC: stable@vger.kernel.org
Link: https://lore.kernel.org/r/00000000000052099f05f3b3e298@google.com/
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

cifs: Fix use-after-free in rdata->read_into_pages()

commit aa5465aeca3c66fecdf7efcf554aed79b4c4b211 upstream.

When the network status is unstable, use-after-free may occur when
read data from the server.

  BUG: KASAN: use-after-free in readpages_fill_pages+0x14c/0x7e0

  Call Trace:
   <TASK>
   dump_stack_lvl+0x38/0x4c
   print_report+0x16f/0x4a6
   kasan_report+0xb7/0x130
   readpages_fill_pages+0x14c/0x7e0
   cifs_readv_receive+0x46d/0xa40
   cifs_demultiplex_thread+0x121c/0x1490
   kthread+0x16b/0x1a0
   ret_from_fork+0x2c/0x50
   </TASK>

  Allocated by task 2535:
   kasan_save_stack+0x22/0x50
   kasan_set_track+0x25/0x30
   __kasan_kmalloc+0x82/0x90
   cifs_readdata_direct_alloc+0x2c/0x110
   cifs_readdata_alloc+0x2d/0x60
   cifs_readahead+0x393/0xfe0
   read_pages+0x12f/0x470
   page_cache_ra_unbounded+0x1b1/0x240
   filemap_get_pages+0x1c8/0x9a0
   filemap_read+0x1c0/0x540
   cifs_strict_readv+0x21b/0x240
   vfs_read+0x395/0x4b0
   ksys_read+0xb8/0x150
   do_syscall_64+0x3f/0x90
   entry_SYSCALL_64_after_hwframe+0x72/0xdc

  Freed by task 79:
   kasan_save_stack+0x22/0x50
   kasan_set_track+0x25/0x30
   kasan_save_free_info+0x2e/0x50
   __kasan_slab_free+0x10e/0x1a0
   __kmem_cache_free+0x7a/0x1a0
   cifs_readdata_release+0x49/0x60
   process_one_work+0x46c/0x760
   worker_thread+0x2a4/0x6f0
   kthread+0x16b/0x1a0
   ret_from_fork+0x2c/0x50

  Last potentially related work creation:
   kasan_save_stack+0x22/0x50
   __kasan_record_aux_stack+0x95/0xb0
   insert_work+0x2b/0x130
   __queue_work+0x1fe/0x660
   queue_work_on+0x4b/0x60
   smb2_readv_callback+0x396/0x800
   cifs_abort_connection+0x474/0x6a0
   cifs_reconnect+0x5cb/0xa50
   cifs_readv_from_socket.cold+0x22/0x6c
   cifs_read_page_from_socket+0xc1/0x100
   readpages_fill_pages.cold+0x2f/0x46
   cifs_readv_receive+0x46d/0xa40
   cifs_demultiplex_thread+0x121c/0x1490
   kthread+0x16b/0x1a0
   ret_from_fork+0x2c/0x50

The following function calls will cause UAF of the rdata pointer.

readpages_fill_pages
 cifs_read_page_from_socket
  cifs_readv_from_socket
   cifs_reconnect
    __cifs_reconnect
     cifs_abort_connection
      mid->callback() --> smb2_readv_callback
       queue_work(&rdata->work)  # if the worker completes first,
                                 # the rdata is freed
          cifs_readv_complete
            kref_put
              cifs_readdata_release
                kfree(rdata)
 return rdata->...               # UAF in readpages_fill_pages()

Similarly, this problem also occurs in the uncache_fill_pages().

Fix this by adjusts the order of condition judgment in the return
statement.

Signed-off-by: ZhaoLong Wang <wangzhaolong1@huawei.com>
Cc: stable@vger.kernel.org
Acked-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

pinctrl: intel: Restore the pins that used to be in Direct IRQ mode

[ Upstream commit a8520be3ffef3d25b53bf171a7ebe17ee0154175 ]

If the firmware mangled the register contents too much,
check the saved value for the Direct IRQ mode. If it
matches, we will restore the pin state.

Reported-by: Jim Minter <jimminter@microsoft.com>
Fixes: 6989ea4881c8 ("pinctrl: intel: Save and restore pins in "direct IRQ" mode")
Tested-by: Jim Minter <jimminter@microsoft.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/r/20230206141558.20916-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

pinctrl: aspeed: Revert "Force to disable the function's signal"

[ Upstream commit 606d4ef4922662ded34aa7218288c3043ce0a41a ]

This reverts commit cf517fef601b9dde151f0afc27164d13bf1fd907.

The commit cf517fef601b ("pinctrl: aspeed: Force to disable the
function's signal") exposed a problem with fetching the regmap for
reading the GFX register.

The Romulus machine the device tree contains a gpio hog for GPIO S7.
With the patch applied:

  Muxing pin 151 for GPIO
  Disabling signal VPOB9 for VPO
  aspeed-g5-pinctrl 1e6e2080.pinctrl: Failed to acquire regmap for IP block 1
  aspeed-g5-pinctrl 1e6e2080.pinctrl: request() failed for pin 151

The code path is aspeed-gpio -> pinmux-g5 -> regmap -> clk, and the
of_clock code returns an error as it doesn't have a valid struct clk_hw
pointer. The regmap call happens because pinmux wants to check the GFX
node (IP block 1) to query bits there.

For reference, before the offending patch:

  Muxing pin 151 for GPIO
  Disabling signal VPOB9 for VPO
  Want SCU8C[0x00000080]=0x1, got 0x0 from 0x00000000
  Disabling signal VPOB9 for VPOOFF1
  Want SCU8C[0x00000080]=0x1, got 0x0 from 0x00000000
  Disabling signal VPOB9 for VPOOFF2
  Want SCU8C[0x00000080]=0x1, got 0x0 from 0x00000000
  Enabling signal GPIOS7 for GPIOS7
  Muxed pin 151 as GPIOS7
  gpio-943 (seq_cont): hogged as output/low

We can't skip the clock check to allow pinmux to proceed, because the
write to disable VPOB9 will try to set a bit in the GFX register space
which will not stick when the IP is in reset. However, we do not want to
enable the IP just so pinmux can do a disable-enable dance for the pin.

For now, revert the offending patch while a correct solution is found.

Fixes: cf517fef601b ("pinctrl: aspeed: Force to disable the function's signal")
Link: https://github.com/openbmc/linux/issues/218
Signed-off-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20230130220845.917985-1-joel@jms.id.au
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

spi: dw: Fix wrong FIFO level setting for long xfers

[ Upstream commit c63b8fd14a7db719f8252038a790638728c4eb66 ]

Due to using the u16 type in the min_t() macros the SPI transfer length
will be cast to word before participating in the conditional statement
implied by the macro. Thus if the transfer length is greater than 64KB the
Tx/Rx FIFO threshold level value will be determined by the leftover of the
truncated after the type-case length. In the worst case it will cause the
dramatical performance drop due to the "Tx FIFO Empty" or "Rx FIFO Full"
interrupts triggered on each xfer word sent/received to/from the bus.

The problem can be easily fixed by specifying the unsigned int type in the
min_t() macros thus preventing the possible data loss.

Fixes: ea11370fffdf ("spi: dw: get TX level without an additional variable")
Reported-by: Sergey Nazarov <Sergey.Nazarov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230113185942.2516-1-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

pinctrl: single: fix potential NULL dereference

[ Upstream commit d2d73e6d4822140445ad4a7b1c6091e0f5fe703b ]

Added checking of pointer "function" in pcs_set_mux().
pinmux_generic_get_function() can return NULL and the pointer
"function" was dereferenced without checking against NULL.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 571aec4df5b7 ("pinctrl: single: Use generic pinmux helpers for managing functions")
Signed-off-by: Maxim Korotkov <korotkov.maxim.s@gmail.com>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20221118104332.943-1-korotkov.maxim.s@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

pinctrl: aspeed: Fix confusing types in return value

[ Upstream commit 287a344a11f1ebd31055cf9b22c88d7005f108d7 ]

The function signature is int, but we return a bool. Instead return a
negative errno as the kerneldoc suggests.

Fixes: 4d3d0e4272d8 ("pinctrl: Add core support for Aspeed SoCs")
Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Link: https://lore.kernel.org/r/20230119231856.52014-1-joel@jms.id.au
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

pinctrl: mediatek: Fix the drive register definition of some Pins

[ Upstream commit 5754a1c98b18009cb3030dc391aa37b77428a0bd ]

The drive adjustment register definition of gpio13 and gpio81 is wrong:
"the start address for the range" of gpio18 is corrected to 0x000,
"the start bit for the first register within the range" of gpio81 is
corrected to 24.

Fixes: 6cf5e9ef362a ("pinctrl: add pinctrl driver on mt8195")
Signed-off-by: Guodong Liu <Guodong.Liu@mediatek.com>
Link: https://lore.kernel.org/r/20230118062116.26315-1-Guodong.Liu@mediatek.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

clk: microchip: mpfs-ccc: Use devm_kasprintf() for allocating formatted strings

[ Upstream commit 86d884f5287f4369c198811aaa4931a3a11f36d2 ]

In various places, string buffers of a fixed size are allocated, and
filled using snprintf() with the same fixed size, which is error-prone.

Replace this by calling devm_kasprintf() instead, which always uses the
appropriate size.

While at it, remove an unneeded intermediate variable, which allows us
to drop a cast as a bonus.

With the initial behavior it would have been possible to have a device tree
with a node address that would make "ccc<node_address>_pll<N>" exceed
18 characters. If that happened, the <N> would be cut off & both
pll 0 & 1 would be named identically. If that happens, pll1 would fail
to register. Thus, the fixes tag has been added to this commit.

Fixes: d39fb172760e ("clk: microchip: add PolarFire SoC fabric clock support")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
[claudiu.beznea: added the rationale behind fixes tag]
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/f904fd28b2087d1463ea65f059924e3b1acc193c.1672764239.git.geert+renesas@glider.be
Signed-off-by: Sasha Levin <sashal@kernel.org>

ASoC: topology: Return -ENOMEM on memory allocation failure

[ Upstream commit c173ee5b2fa6195066674d66d1d7e191010fb1ff ]

When handling error path, ret needs to be set to correct value.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Fixes: d29d41e28eea ("ASoC: topology: Add support for multiple kcontrol types to a widget")
Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Link: https://lore.kernel.org/r/20230207210428.2076354-1-amadeuszx.slawinski@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

ASoC: fsl_sai: fix getting version from VERID

[ Upstream commit 29aab38823b61e482995c24644bd2d8acfe56185 ]

The version information is at the bit31 ~ bit16 in the VERID
register, so need to right shift 16bit to get it, otherwise
the result of comparison "sai->verid.version >= 0x0301" is
wrong.

Fixes: 99c1e74f25d4 ("ASoC: fsl_sai: store full version instead of major/minor")
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/1675760664-25193-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

ASoC: tas5805m: add missing page switch.

[ Upstream commit e0576cd642ced1ac65370b4516b7be9f536a0498 ]

In tas5805m_refresh, we switch pages to update the DSP volume control,
but we need to switch back to page 0 before trying to alter the
soft-mute control. This latter page-switch was missing.

Fixes: ec45268467f4 ("ASoC: add support for TAS5805M digital amplifier")
Signed-off-by: Daniel Beer <daniel.beer@igorinstitute.com>
Link: https://lore.kernel.org/r/1fea38a71ea6ab0225d19ab28d1fa12828d762d0.1675497326.git.daniel.beer@igorinstitute.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

ASoC: tas5805m: rework to avoid scheduling while atomic.

[ Upstream commit 147323792693bf013f60dca160be1d32bd4d180a ]

There's some setup we need to do in order to get the DSP initialized,
and this can't be done until a bit-clock is ready. In an earlier version
of this driver, this work was done in a DAPM callback.

The DAPM callback doesn't guarantee that the bit-clock is running, so
the work was moved instead to the trigger callback. Unfortunately this
callback runs in atomic context, and the setup code needs to do I2C
transactions.

Here we use a work_struct to kick off the setup in a thread instead.

Fixes: ec45268467f4 ("ASoC: add support for TAS5805M digital amplifier")
Signed-off-by: Daniel Beer <daniel.beer@igorinstitute.com>
Link: https://lore.kernel.org/r/85d8ba405cb009a7a3249b556dc8f3bdb1754fdf.1675497326.git.daniel.beer@igorinstitute.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

arm64: dts: mediatek: mt8195: Fix vdosys* compatible strings

[ Upstream commit 97801cfcf9565247bcc53b67ea47fa87b1704375 ]

When vdosys1 was initially added, it was incorrectly assumed to be
compatible with vdosys0, and thus both had the same mt8195-mmsys
compatible attached.

This has since been corrected in commit b237efd47df7 ("dt-bindings:
arm: mediatek: mmsys: change compatible for MT8195") and commit
82219cfbef18 ("dt-bindings: arm: mediatek: mmsys: add vdosys1 compatible
for MT8195"). The device tree needs to be fixed as well, otherwise
the vdosys1 block fails to work, and causes its dependent power domain
controller to not work either.

Change the compatible string of vdosys1 to "mediatek,mt8195-vdosys1".
While at it, also add the new "mediatek,mt8195-vdosys0" compatible to
vdosys0.

Fixes: 6aa5b46d1755 ("arm64: dts: mt8195: Add vdosys and vppsys clock nodes")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Matthias Brugger <matthias.bgg@gmail.com>
Link: https://lore.kernel.org/r/20230202104014.2931517-1-wenst@chromium.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

riscv: stacktrace: Fix missing the first frame

[ Upstream commit cb80242cc679d6397e77d8a964deeb3ff218d2b5 ]

When running kfence_test, I found some testcases failed like this:

 # test_out_of_bounds_read: EXPECTATION FAILED at mm/kfence/kfence_test.c:346
 Expected report_matches(&expect) to be true, but is false
 not ok 1 - test_out_of_bounds_read

The corresponding call-trace is:

 BUG: KFENCE: out-of-bounds read in kunit_try_run_case+0x38/0x84

 Out-of-bounds read at 0x(____ptrval____) (32B right of kfence-#10):
  kunit_try_run_case+0x38/0x84
  kunit_generic_run_threadfn_adapter+0x12/0x1e
  kthread+0xc8/0xde
  ret_from_exception+0x0/0xc

The kfence_test using the first frame of call trace to check whether the
testcase is succeed or not. Commit 6a00ef449370 ("riscv: eliminate
unreliable __builtin_frame_address(1)") skip first frame for all
case, which results the kfence_test failed. Indeed, we only need to skip
the first frame for case (task==NULL || task==current).

With this patch, the call-trace will be:

 BUG: KFENCE: out-of-bounds read in test_out_of_bounds_read+0x88/0x19e

 Out-of-bounds read at 0x(____ptrval____) (1B left of kfence-#7):
  test_out_of_bounds_read+0x88/0x19e
  kunit_try_run_case+0x38/0x84
  kunit_generic_run_threadfn_adapter+0x12/0x1e
  kthread+0xc8/0xde
  ret_from_exception+0x0/0xc

Fixes: 6a00ef449370 ("riscv: eliminate unreliable __builtin_frame_address(1)")
Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Tested-by: Samuel Holland <samuel@sholland.org>
Link: https://lore.kernel.org/r/20221207025038.1022045-1-liushixin2@huawei.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

ALSA: pci: lx6464es: fix a debug loop

[ Upstream commit 5dac9f8dc25fefd9d928b98f6477ff3daefd73e3 ]

This loop accidentally reuses the "i" iterator for both the inside and
the outside loop.  The value of MAX_STREAM_BUFFER is 5.  I believe that
chip->rmh.stat_len is in the 2-12 range.  If the value of .stat_len is
4 or more then it will loop exactly one time, but if it's less then it
is a forever loop.

It looks like it was supposed to combined into one loop where
conditions are checked.

Fixes: 8e6320064c33 ("ALSA: lx_core: Remove useless #if 0 .. #endif")
Signed-off-by: Dan Carpenter <error27@gmail.com>
Link: https://lore.kernel.org/r/Y9jnJTis/mRFJAQp@kili
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

arm64: dts: rockchip: set sdmmc0 speed to sd-uhs-sdr50 on rock-3a

[ Upstream commit bc121b707e816616567683e51fd9194c2309977a ]

As other rk336x based devices, the Rock 3 Model A has issues with high
speed SD cards, so lower the speed to 50 instead of 104 in the same
manor has the Quartz64 Model B has.

Fixes: 22a442e6586c ("arm64: dts: rockchip: add basic dts for the radxa rock3 model a")
Signed-off-by: Dan Johansen <strit@manjaro.org>
Link: https://lore.kernel.org/r/20230128112432.132302-1-strit@manjaro.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

arm64: dts: rockchip: fix input enable pinconf on rk3399

[ Upstream commit 6f515b663d49a14fb63f8c5d0a2a4ae53d44790a ]

When the input enable pinconf was introduced, a default drive-strength
value of 2 was set for the pull up/down configs. However, this parameter
is unneeded when configuring the pin as input, and having a single
hardcoded value here is actually harmful: GPIOs on the RK3399 have
various same drive-strength capabilities depending on the bank and port
they belong to.

As an example, trying to configure the GPIO4_PD3 pin as an input with
pull-up enabled fails with the following output:

  [   10.706542] rockchip-pinctrl pinctrl: unsupported driver strength 2
  [   10.713661] rockchip-pinctrl pinctrl: pin_config_set op failed for pin 155

(acceptable drive-strength values for this pin being 3, 6, 9 and 12)

Let's drop the drive-strength property from all input pinconfs in order
to solve this issue.

Fixes: ec48c3e82ca3 ("arm64: dts: rockchip: add an input enable pinconf to rk3399")
Signed-off-by: Arnaud Ferraris <arnaud.ferraris@collabora.com>
Reviewed-by: Caleb Connolly <kc@postmarketos.org>
Link: https://lore.kernel.org/r/20221215101947.254896-1-arnaud.ferraris@collabora.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

selftests: forwarding: lib: quote the sysctl values

[ Upstream commit 3a082086aa200852545cf15159213582c0c80eba ]

When set/restore sysctl value, we should quote the value as some keys
may have multi values, e.g. net.ipv4.ping_group_range

Fixes: f5ae57784ba8 ("selftests: forwarding: lib: Add sysctl_set(), sysctl_restore()")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Link: https://lore.kernel.org/r/20230208032110.879205-1-liuhangbin@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

net: mscc: ocelot: fix all IPv6 getting trapped to CPU when PTP timestamping is used

[ Upstream commit 2fcde9fe258ec8b88d41def38e43ca4da32c0a9a ]

While running this selftest which usually passes:

~/selftests/drivers/net/dsa# ./local_termination.sh eno0 swp0
TEST: swp0: Unicast IPv4 to primary MAC address                     [ OK ]
TEST: swp0: Unicast IPv4 to macvlan MAC address                     [ OK ]
TEST: swp0: Unicast IPv4 to unknown MAC address                     [ OK ]
TEST: swp0: Unicast IPv4 to unknown MAC address, promisc            [ OK ]
TEST: swp0: Unicast IPv4 to unknown MAC address, allmulti           [ OK ]
TEST: swp0: Multicast IPv4 to joined group                          [ OK ]
TEST: swp0: Multicast IPv4 to unknown group                         [ OK ]
TEST: swp0: Multicast IPv4 to unknown group, promisc                [ OK ]
TEST: swp0: Multicast IPv4 to unknown group, allmulti               [ OK ]
TEST: swp0: Multicast IPv6 to joined group                          [ OK ]
TEST: swp0: Multicast IPv6 to unknown group                         [ OK ]
TEST: swp0: Multicast IPv6 to unknown group, promisc                [ OK ]
TEST: swp0: Multicast IPv6 to unknown group, allmulti               [ OK ]

if I start PTP timestamping then run it again (debug prints added by me),
the unknown IPv6 MC traffic is seen by the CPU port even when it should
have been dropped:

~/selftests/drivers/net/dsa# ptp4l -i swp0 -2 -P -m
ptp4l[225.410]: selected /dev/ptp1 as PTP clock
[  225.445746] mscc_felix 0000:00:00.5: ocelot_l2_ptp_trap_add: port 0 adding L2 PTP trap
[  225.453815] mscc_felix 0000:00:00.5: ocelot_ipv4_ptp_trap_add: port 0 adding IPv4 PTP event trap
[  225.462703] mscc_felix 0000:00:00.5: ocelot_ipv4_ptp_trap_add: port 0 adding IPv4 PTP general trap
[  225.471768] mscc_felix 0000:00:00.5: ocelot_ipv6_ptp_trap_add: port 0 adding IPv6 PTP event trap
[  225.480651] mscc_felix 0000:00:00.5: ocelot_ipv6_ptp_trap_add: port 0 adding IPv6 PTP general trap
ptp4l[225.488]: port 1: INITIALIZING to LISTENING on INIT_COMPLETE
ptp4l[225.488]: port 0: INITIALIZING to LISTENING on INIT_COMPLETE
^C
~/selftests/drivers/net/dsa# ./local_termination.sh eno0 swp0
TEST: swp0: Unicast IPv4 to primary MAC address                     [ OK ]
TEST: swp0: Unicast IPv4 to macvlan MAC address                     [ OK ]
TEST: swp0: Unicast IPv4 to unknown MAC address                     [ OK ]
TEST: swp0: Unicast IPv4 to unknown MAC address, promisc            [ OK ]
TEST: swp0: Unicast IPv4 to unknown MAC address, allmulti           [ OK ]
TEST: swp0: Multicast IPv4 to joined group                          [ OK ]
TEST: swp0: Multicast IPv4 to unknown group                         [ OK ]
TEST: swp0: Multicast IPv4 to unknown group, promisc                [ OK ]
TEST: swp0: Multicast IPv4 to unknown group, allmulti               [ OK ]
TEST: swp0: Multicast IPv6 to joined group                          [ OK ]
TEST: swp0: Multicast IPv6 to unknown group                         [FAIL]
        reception succeeded, but should have failed
TEST: swp0: Multicast IPv6 to unknown group, promisc                [ OK ]
TEST: swp0: Multicast IPv6 to unknown group, allmulti               [ OK ]

The PGID_MCIPV6 is configured correctly to not flood to the CPU,
I checked that.

Furthermore, when I disable back PTP RX timestamping (ptp4l doesn't do
that when it exists), packets are RX filtered again as they should be:

~/selftests/drivers/net/dsa# hwstamp_ctl -i swp0 -r 0
[  218.202854] mscc_felix 0000:00:00.5: ocelot_l2_ptp_trap_del: port 0 removing L2 PTP trap
[  218.212656] mscc_felix 0000:00:00.5: ocelot_ipv4_ptp_trap_del: port 0 removing IPv4 PTP event trap
[  218.222975] mscc_felix 0000:00:00.5: ocelot_ipv4_ptp_trap_del: port 0 removing IPv4 PTP general trap
[  218.233133] mscc_felix 0000:00:00.5: ocelot_ipv6_ptp_trap_del: port 0 removing IPv6 PTP event trap
[  218.242251] mscc_felix 0000:00:00.5: ocelot_ipv6_ptp_trap_del: port 0 removing IPv6 PTP general trap
current settings:
tx_type 1
rx_filter 12
new settings:
tx_type 1
rx_filter 0
~/selftests/drivers/net/dsa# ./local_termination.sh eno0 swp0
TEST: swp0: Unicast IPv4 to primary MAC address                     [ OK ]
TEST: swp0: Unicast IPv4 to macvlan MAC address                     [ OK ]
TEST: swp0: Unicast IPv4 to unknown MAC address                     [ OK ]
TEST: swp0: Unicast IPv4 to unknown MAC address, promisc            [ OK ]
TEST: swp0: Unicast IPv4 to unknown MAC address, allmulti           [ OK ]
TEST: swp0: Multicast IPv4 to joined group                          [ OK ]
TEST: swp0: Multicast IPv4 to unknown group                         [ OK ]
TEST: swp0: Multicast IPv4 to unknown group, promisc                [ OK ]
TEST: swp0: Multicast IPv4 to unknown group, allmulti               [ OK ]
TEST: swp0: Multicast IPv6 to joined group                          [ OK ]
TEST: swp0: Multicast IPv6 to unknown group                         [ OK ]
TEST: swp0: Multicast IPv6 to unknown group, promisc                [ OK ]
TEST: swp0: Multicast IPv6 to unknown group, allmulti               [ OK ]

So it's clear that something in the PTP RX trapping logic went wrong.

Looking a bit at the code, I can see that there are 4 typos, which
populate "ipv4" VCAP IS2 key filter fields for IPv6 keys.

VCAP IS2 keys of type OCELOT_VCAP_KEY_IPV4 and OCELOT_VCAP_KEY_IPV6 are
handled by is2_entry_set(). OCELOT_VCAP_KEY_IPV4 looks at
&filter->key.ipv4, and OCELOT_VCAP_KEY_IPV6 at &filter->key.ipv6.
Simply put, when we populate the wrong key field, &filter->key.ipv6
fields "proto.mask" and "proto.value" remain all zeroes (or "don't care").
So is2_entry_set() will enter the "else" of this "if" condition:

if (msk == 0xff && (val == IPPROTO_TCP || val == IPPROTO_UDP))

and proceed to ignore the "proto" field. The resulting rule will match
on all IPv6 traffic, trapping it to the CPU.

This is the reason why the local_termination.sh selftest sees it,
because control traps are stronger than the PGID_MCIPV6 used for
flooding (from the forwarding data path).

But the problem is in fact much deeper. We trap all IPv6 traffic to the
CPU, but if we're bridged, we set skb->offload_fwd_mark = 1, so software
forwarding will not take place and IPv6 traffic will never reach its
destination.

The fix is simple - correct the typos.

I was intentionally inaccurate in the commit message about the breakage
occurring when any PTP timestamping is enabled. In fact it only happens
when L4 timestamping is requested (HWTSTAMP_FILTER_PTP_V2_EVENT or
HWTSTAMP_FILTER_PTP_V2_L4_EVENT). But ptp4l requests a larger RX
timestamping filter than it needs for "-2": HWTSTAMP_FILTER_PTP_V2_EVENT.
I wanted people skimming through git logs to not think that the bug
doesn't affect them because they only use ptp4l in L2 mode.

Fixes: 96ca08c05838 ("net: mscc: ocelot: set up traps for PTP packets")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230207183117.1745754-1-vladimir.oltean@nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

rds: rds_rm_zerocopy_callback() use list_first_entry()

[ Upstream commit f753a68980cf4b59a80fe677619da2b1804f526d ]

rds_rm_zerocopy_callback() uses list_entry() on the head of a list
causing a type confusion.
Use list_first_entry() to actually access the first element of the
rs_zcookie_queue list.

Fixes: 9426bbc6de99 ("rds: use list structure to track information for zerocopy completion notification")
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Pietro Borrello <borrello@diag.uniroma1.it>
Link: https://lore.kernel.org/r/20230202-rds-zerocopy-v3-1-83b0df974f9a@diag.uniroma1.it
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

selftests: Fix failing VXLAN VNI filtering test

[ Upstream commit b963d9d5b9437a6b99504987310f98537c9e77d4 ]

iproute2 does not recognize the "group6" and "remote6" keywords. Fix by
using "group" and "remote" instead.

Before:

 # ./test_vxlan_vnifiltering.sh
 [...]
 Tests passed:  25
 Tests failed:   2

After:

 # ./test_vxlan_vnifiltering.sh
 [...]
 Tests passed:  27
 Tests failed:   0

Fixes: 3edf5f66c12a ("selftests: add new tests for vxlan vnifiltering")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Link: https://lore.kernel.org/r/20230207141819.256689-1-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

txhash: fix sk->sk_txrehash default

[ Upstream commit c11204c78d6966c5bda6dd05c3ac5cbb193f93e3 ]

This code fix a bug that sk->sk_txrehash gets its default enable
value from sysctl_txrehash only when the socket is a TCP listener.

We should have sysctl_txrehash to set the default sk->sk_txrehash,
no matter TCP, nor listerner/connector.

Tested by following packetdrill:
  0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
  +0 socket(..., SOCK_DGRAM, IPPROTO_UDP) = 4
  // SO_TXREHASH == 74, default to sysctl_txrehash == 1
  +0 getsockopt(3, SOL_SOCKET, 74, [1], [4]) = 0
  +0 getsockopt(4, SOL_SOCKET, 74, [1], [4]) = 0

Fixes: 26859240e4ee ("txhash: Add socket option to control TX hash rethink behavior")
Signed-off-by: Kevin Yang <yyd@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

net: ethernet: mtk_eth_soc: fix wrong parameters order in __xdp_rxq_info_reg()

[ Upstream commit c966153d120222cd4e85e1e1601584d7d4d91dcb ]

Parameters 'queue_index' and 'napi_id' are passed in a swapped order.
Fix it here.

Fixes: 23233e577ef9 ("net: ethernet: mtk_eth_soc: rely on page_pool for single page buffers")
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

igc: Add ndo_tx_timeout support

[ Upstream commit 9b275176270efd18f2f4e328b32be1bad34c4c0d ]

On some platforms, 100/1000/2500 speeds seem to have sometimes problems
reporting false positive tx unit hang during stressful UDP traffic. Likely
other Intel drivers introduce responses to a tx hang. Update the 'tx hang'
comparator with the comparison of the head and tail of ring pointers and
restore the tx_timeout_factor to the previous value (one).

This can be test by using netperf or iperf3 applications.
Example:
iperf3 -s -p 5001
iperf3 -c 192.168.0.2 --udp -p 5001 --time 600 -b 0

netserver -p 16604
netperf -H 192.168.0.2 -l 600 -p 16604 -t UDP_STREAM -- -m 64000

Fixes: b27b8dc77b5e ("igc: Increase timeout value for Speed 100/1000/2500")
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20230206235818.662384-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

net/mlx5: Serialize module cleanup with reload and remove

[ Upstream commit 8f0d1451ecf7b3bd5a06ffc866c753d0f3ab4683 ]

Currently, remove and reload flows can run in parallel to module cleanup.
This design is error prone. For example: aux_drivers callbacks are called
from both cleanup and remove flows with different lockings, which can
cause a deadlock[1].
Hence, serialize module cleanup with reload and remove.

[1]
       cleanup                        remove
       -------                        ------
   auxiliary_driver_unregister();
                                     devl_lock()
                                      auxiliary_device_delete(mlx5e_aux)
    device_lock(mlx5e_aux)
     devl_lock()
                                       device_lock(mlx5e_aux)

Fixes: 912cebf420c2 ("net/mlx5e: Connect ethernet part to auxiliary bus")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

net/mlx5: fw_tracer, Zero consumer index when reloading the tracer

[ Upstream commit 184e1e4474dbcfebc4dbd1fa823a329978f25506 ]

When tracer is reloaded, the device will log the traces at the
beginning of the log buffer. Also, driver is reading the log buffer in
chunks in accordance to the consumer index.
Hence, zero consumer index when reloading the tracer.

Fixes: 4383cfcc65e7 ("net/mlx5: Add devlink reload")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

net/mlx5: fw_tracer, Clear load bit when freeing string DBs buffers

[ Upstream commit db561fed6b8fa3878e74d5df6512a4a38152b63e ]

Whenever the driver is reading the string DBs into buffers, the driver
is setting the load bit, but the driver never clears this bit.
As a result, in case load bit is on and the driver query the device for
new string DBs, the driver won't read again the string DBs.
Fix it by clearing the load bit when query the device for new string
DBs.

Fixes: 2d69356752ff ("net/mlx5: Add support for fw live patch event")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

net/mlx5: Expose SF firmware pages counter

[ Upstream commit 9965bbebae59b3563a4d95e4aed121e8965dfdc2 ]

Currently, each core device has VF pages counter which stores number of
fw pages used by its VFs and SFs.

The current design led to a hang when performing firmware reset on DPU,
where the DPU PFs stalled in sriov unload flow due to waiting on release
of SFs pages instead of waiting on only VFs pages.

Thus, Add a separate counter for SF firmware pages, which will prevent
the stall scenario described above.

Fixes: 1958fc2f0712 ("net/mlx5: SF, Add auxiliary device driver")
Signed-off-by: Maher Sanalla <msanalla@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

net/mlx5: Store page counters in a single array

[ Upstream commit c3bdbaea654d8df39112de33037106134a520dc7 ]

Currently, an independent page counter is used for tracking memory usage
for each function type such as VF, PF and host PF (DPU).

For better code-readibilty, use a single array that stores
the number of allocated memory pages for each function type.

Signed-off-by: Maher Sanalla <msanalla@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Stable-dep-of: 9965bbebae59 ("net/mlx5: Expose SF firmware pages counter")
Signed-off-by: Sasha Levin <sashal@kernel.org>

net/mlx5e: IPoIB, Show unknown speed instead of error

[ Upstream commit 8aa5f171d51c1cb69e5e3106df4dd1a446102823 ]

ethtool is returning an error for unknown speeds for the IPoIB interface:

$ ethtool ib0
netlink error: failed to retrieve link settings
netlink error: Invalid argument
netlink error: failed to retrieve link settings
netlink error: Invalid argument
Settings for ib0:
Link detected: no

After this change, ethtool will return success and show "unknown speed":

$ ethtool ib0
Settings for ib0:
Supported ports: [  ]
Supported link modes:   Not reported
Supported pause frame use: No
Supports auto-negotiation: No
Supported FEC modes: Not reported
Advertised link modes:  Not reported
Advertised pause frame use: No
Advertised auto-negotiation: No
Advertised FEC modes: Not reported
Speed: Unknown!
Duplex: Full
Auto-negotiation: off
Port: Other
PHYAD: 0
Transceiver: internal
Link detected: no

Fixes: eb234ee9d541 ("net/mlx5e: IPoIB, Add support for get_link_ksettings in ethtool")
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

net/mlx5e: Fix crash unsetting rx-vlan-filter in switchdev mode

[ Upstream commit 8974aa9638df557f4642acef707af15648a03555 ]

Moving to switchdev mode with rx-vlan-filter on and then setting it off
causes the kernel to crash since fs->vlan is freed during nic profile
cleanup flow.

RX VLAN filtering is not supported in switchdev mode so unset it when
changing to switchdev and restore its value when switching back to
legacy.

trace:
[] RIP: 0010:mlx5e_disable_cvlan_filter+0x43/0x70
[] set_feature_cvlan_filter+0x37/0x40 [mlx5_core]
[] mlx5e_handle_feature+0x3a/0x60 [mlx5_core]
[] mlx5e_set_features+0x6d/0x160 [mlx5_core]
[] __netdev_update_features+0x288/0xa70
[] ethnl_set_features+0x309/0x380
[] ? __nla_parse+0x21/0x30
[] genl_family_rcv_msg_doit.isra.17+0x110/0x150
[] genl_rcv_msg+0x112/0x260
[] ? features_reply_size+0xe0/0xe0
[] ? genl_family_rcv_msg_doit.isra.17+0x150/0x150
[] netlink_rcv_skb+0x4e/0x100
[] genl_rcv+0x24/0x40
[] netlink_unicast+0x1ab/0x290
[] netlink_sendmsg+0x257/0x4f0
[] sock_sendmsg+0x5c/0x70

Fixes: cb67b832921c ("net/mlx5e: Introduce SRIOV VF representors")
Signed-off-by: Amir Tzin <amirtz@nvidia.com>
Reviewed-by: Maor Dickman <maord@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

net/mlx5: Bridge, fix ageing of peer FDB entries

[ Upstream commit da0c52426cd23f8728eff72c2b2d2a3eb6b451f5 ]

SWITCHDEV_FDB_ADD_TO_BRIDGE event handler that updates FDB entry 'lastuse'
field is only executed for eswitch that owns the entry. However, if peer
entry processed packets at least once it will have hardware counter 'used'
value greater than entry 'lastuse' from that point on, which will cause FDB
entry not being aged out.

Process the event on all eswitch instances.

Fixes: ff9b7521468b ("net/mlx5: Bridge, support LAG")
Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Reviewed-by: Maor Dickman <maord@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

net/mlx5e: Update rx ring hw mtu upon each rx-fcs flag change

[ Upstream commit 1e66220948df815d7b37e0ff8b4627ce10433738 ]

rq->hw_mtu is used in function en_rx.c/mlx5e_skb_from_cqe_mpwrq_linear()
to catch oversized packets. If FCS is concatenated to the end of the
packet then the check should be updated accordingly.

Rx rings initialization (mlx5e_init_rxq_rq()) invoked for every new set
of channels, as part of mlx5e_safe_switch_params(), unknowingly if it
runs with default configuration or not. Current rq->hw_mtu
initialization assumes default configuration and ignores
params->scatter_fcs_en flag state.
Fix this, by accounting for params->scatter_fcs_en flag state during
rq->hw_mtu initialization.

In addition, updating rq->hw_mtu value during ingress traffic might
lead to packets drop and oversize_pkts_sw_drop counter increase with no
good reason. Hence we remove this optimization and switch the set of
channels with a new one, to make sure we don't get false positives on
the oversize_pkts_sw_drop counter.

Fixes: 102722fc6832 ("net/mlx5e: Add support for RXFCS feature flag")
Signed-off-by: Adham Faris <afaris@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

net: mscc: ocelot: fix VCAP filters not matching on MAC with "protocol 802.1Q"

[ Upstream commit f964f8399df29d3e3ced77177cf35131cd2491bf ]

Alternative short title: don't instruct the hardware to match on
EtherType with "protocol 802.1Q" flower filters. It doesn't work for the
reasons detailed below.

With a command such as the following:

tc filter add dev $swp1 ingress chain $(IS1 2) pref 3 \
protocol 802.1Q flower skip_sw vlan_id 200 src_mac $h1_mac \
action vlan modify id 300 \
action goto chain $(IS2 0 0)

the created filter is set by ocelot_flower_parse_key() to be of type
OCELOT_VCAP_KEY_ETYPE, and etype is set to {value=0x8100, mask=0xffff}.
This gets propagated all the way to is1_entry_set() which commits it to
hardware (the VCAP_IS1_HK_ETYPE field of the key). Compare this to the
case where src_mac isn't specified - the key type is OCELOT_VCAP_KEY_ANY,
and is1_entry_set() doesn't populate VCAP_IS1_HK_ETYPE.

The problem is that for VLAN-tagged frames, the hardware interprets the
ETYPE field as holding the encapsulated VLAN protocol. So the above
filter will only match those packets which have an encapsulated protocol
of 0x8100, rather than all packets with VLAN ID 200 and the given src_mac.

The reason why this is allowed to occur is because, although we have a
block of code in ocelot_flower_parse_key() which sets "match_protocol"
to false when VLAN keys are present, that code executes too late.
There is another block of code, which executes for Ethernet addresses,
and has a "goto finished_key_parsing" and skips the VLAN header parsing.
By skipping it, "match_protocol" remains with the value it was
initialized with, i.e. "true", and "proto" is set to f->common.protocol,
or 0x8100.

The concept of ignoring some keys rather than erroring out when they are
present but can't be offloaded is dubious in itself, but is present
since the initial commit fe3490e6107e ("net: mscc: ocelot: Hardware
ofload for tc flower filter"), and it's outside of the scope of this
patch to change that.

The problem was introduced when the driver started to interpret the
flower filter's protocol, and populate the VCAP filter's ETYPE field
based on it.

To fix this, it is sufficient to move the code that parses the VLAN keys
earlier than the "goto finished_key_parsing" instruction. This will
ensure that if we have a flower filter with both VLAN and Ethernet
address keys, it won't match on ETYPE 0x8100, because the VLAN key
parsing sets "match_protocol = false".

Fixes: 86b956de119c ("net: mscc: ocelot: support matching on EtherType")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230205192409.1796428-1-vladimir.oltean@nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

net: dsa: mt7530: don't change PVC_EG_TAG when CPU port becomes VLAN-aware

[ Upstream commit 0b6d6425103a676e2b6a81f3fd35d7ea4f9b90ec ]

Frank reports that in a mt7530 setup where some ports are standalone and
some are in a VLAN-aware bridge, 8021q uppers of the standalone ports
lose their VLAN tag on xmit, as seen by the link partner.

This seems to occur because once the other ports join the VLAN-aware
bridge, mt7530_port_vlan_filtering() also calls
mt7530_port_set_vlan_aware(ds, cpu_dp->index), and this affects the way
that the switch processes the traffic of the standalone port.

Relevant is the PVC_EG_TAG bit. The MT7530 documentation says about it:

EG_TAG: Incoming Port Egress Tag VLAN Attribution
0: disabled (system default)
1: consistent (keep the original ingress tag attribute)

My interpretation is that this setting applies on the ingress port, and
"disabled" is basically the normal behavior, where the egress tag format
of the packet (tagged or untagged) is decided by the VLAN table
(MT7530_VLAN_EGRESS_UNTAG or MT7530_VLAN_EGRESS_TAG).

But there is also an option of overriding the system default behavior,
and for the egress tagging format of packets to be decided not by the
VLAN table, but simply by copying the ingress tag format (if ingress was
tagged, egress is tagged; if ingress was untagged, egress is untagged;
aka "consistent). This is useful in 2 scenarios:

- VLAN-unaware bridge ports will always encounter a miss in the VLAN
  table. They should forward a packet as-is, though. So we use
  "consistent" there. See commit e045124e9399 ("net: dsa: mt7530: fix
  tagged frames pass-through in VLAN-unaware mode").

- Traffic injected from the CPU port. The operating system is in god
  mode; if it wants a packet to exit as VLAN-tagged, it sends it as
  VLAN-tagged. Otherwise it sends it as VLAN-untagged*.

*This is true only if we don't consider the bridge TX forwarding offload
feature, which mt7530 doesn't support.

So for now, make the CPU port always stay in "consistent" mode to allow
software VLANs to be forwarded to their egress ports with the VLAN tag
intact, and not stripped.

Link: https://lore.kernel.org/netdev/trinity-e6294d28-636c-4c40-bb8b-b523521b00be-1674233135062@3c-app-gmx-bs36/
Fixes: e045124e9399 ("net: dsa: mt7530: fix tagged frames pass-through in VLAN-unaware mode")
Reported-by: Frank Wunderlich <frank-w@public-files.de>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20230205140713.1609281-1-vladimir.oltean@nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>