============================================
WARNING: possible recursive locking detected
5.9.0-rc4-syzkaller #0 Not tainted
--------------------------------------------
syz-executor.3/25359 is trying to acquire lock:
ffff8880a630e130 (&runtime->sleep){..-.}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline]
ffff8880a630e130 (&runtime->sleep){..-.}-{2:2}, at: io_poll_double_wake+0x156/0x510 fs/io_uring.c:4730
but task is already holding lock:
ffff8880252e7130 (&runtime->sleep){..-.}-{2:2}, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:122
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&runtime->sleep);
lock(&runtime->sleep);
*** DEADLOCK ***
May be due to missing lock nesting notation
2 locks held by syz-executor.3/25359:
#0: ffff888099dcf108 (&group->lock){..-.}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:379 [inline]
#0: ffff888099dcf108 (&group->lock){..-.}-{2:2}, at: snd_pcm_group_lock_irq sound/core/pcm_native.c:97 [inline]
#0: ffff888099dcf108 (&group->lock){..-.}-{2:2}, at: snd_pcm_stream_lock_irq sound/core/pcm_native.c:136 [inline]
#0: ffff888099dcf108 (&group->lock){..-.}-{2:2}, at: snd_pcm_drop+0x131/0x320 sound/core/pcm_native.c:2128
#1: ffff8880252e7130 (&runtime->sleep){..-.}-{2:2}, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:122
stack backtrace:
CPU: 0 PID: 25359 Comm: syz-executor.3 Not tainted 5.9.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x198/0x1fd lib/dump_stack.c:118
print_deadlock_bug kernel/locking/lockdep.c:2391 [inline]
check_deadlock kernel/locking/lockdep.c:2432 [inline]
validate_chain kernel/locking/lockdep.c:3202 [inline]
__lock_acquire.cold+0x149/0x398 kernel/locking/lockdep.c:4426
lock_acquire+0x1f3/0xae0 kernel/locking/lockdep.c:5006
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
spin_lock include/linux/spinlock.h:354 [inline]
io_poll_double_wake+0x156/0x510 fs/io_uring.c:4730
__wake_up_common+0x147/0x650 kernel/sched/wait.c:93
__wake_up_common_lock+0xd0/0x130 kernel/sched/wait.c:123
snd_pcm_post_stop+0xe6/0x230 sound/core/pcm_native.c:1434
snd_pcm_action_single sound/core/pcm_native.c:1209 [inline]
snd_pcm_action+0x143/0x170 sound/core/pcm_native.c:1290
snd_pcm_stop sound/core/pcm_native.c:1455 [inline]
snd_pcm_drop+0x1ab/0x320 sound/core/pcm_native.c:2133
snd_pcm_kernel_ioctl+0x12f/0x240 sound/core/pcm_native.c:3335
snd_pcm_oss_sync+0x230/0x800 sound/core/oss/pcm_oss.c:1711
snd_pcm_oss_ioctl+0x2174/0x3370 sound/core/oss/pcm_oss.c:2590
vfs_ioctl fs/ioctl.c:48 [inline]
__do_sys_ioctl fs/ioctl.c:753 [inline]
__se_sys_ioctl fs/ioctl.c:739 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45d5b9
Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fb437088c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000015f80 RCX: 000000000045d5b9
RDX: 0000000000000000 RSI: 0000000000005001 RDI: 0000000000000003
RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007fff17872c4f R14: 00007fb4370899c0 R15: 000000000118cf4c