============================================
WARNING: possible recursive locking detected
5.12.0-rc4-syzkaller #0 Not tainted
--------------------------------------------
syz-executor.5/14853 is trying to acquire lock:
ffff888028b0c130 (&runtime->sleep){..-.}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline]
ffff888028b0c130 (&runtime->sleep){..-.}-{2:2}, at: io_poll_double_wake+0x25f/0x6a0 fs/io_uring.c:5002
but task is already holding lock:
ffff88806b981130 (&runtime->sleep){..-.}-{2:2}, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:137
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
3 locks held by syz-executor.5/14853:
#0: ffff88806b981440 (&runtime->oss.params_lock){+.+.}-{3:3}, at: snd_pcm_oss_change_params sound/core/oss/pcm_oss.c:1087 [inline]
#0: ffff88806b981440 (&runtime->oss.params_lock){+.+.}-{3:3}, at: snd_pcm_oss_get_active_substream+0x142/0x1c0 sound/core/oss/pcm_oss.c:1107
#1: ffff8881478d5908 (&group->lock){..-.}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:379 [inline]
#1: ffff8881478d5908 (&group->lock){..-.}-{2:2}, at: snd_pcm_group_lock_irq sound/core/pcm_native.c:97 [inline]
#1: ffff8881478d5908 (&group->lock){..-.}-{2:2}, at: snd_pcm_stream_lock_irq sound/core/pcm_native.c:136 [inline]
#1: ffff8881478d5908 (&group->lock){..-.}-{2:2}, at: snd_pcm_drop+0x131/0x320 sound/core/pcm_native.c:2135
#2: ffff88806b981130 (&runtime->sleep){..-.}-{2:2}, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:137
stack backtrace:
CPU: 1 PID: 14853 Comm: syz-executor.5 Not tainted 5.12.0-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:79 [inline]
dump_stack+0x141/0x1d7 lib/dump_stack.c:120
print_deadlock_bug kernel/locking/lockdep.c:2829 [inline]
check_deadlock kernel/locking/lockdep.c:2872 [inline]
validate_chain kernel/locking/lockdep.c:3661 [inline]
__lock_acquire.cold+0x14c/0x3b4 kernel/locking/lockdep.c:4900
lock_acquire kernel/locking/lockdep.c:5510 [inline]
lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5475
__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+0x25f/0x6a0 fs/io_uring.c:5002
__wake_up_common+0x147/0x650 kernel/sched/wait.c:108
__wake_up_common_lock+0xd0/0x130 kernel/sched/wait.c:138
snd_pcm_post_stop+0xb9/0x1f0 sound/core/pcm_native.c:1440
snd_pcm_action_single sound/core/pcm_native.c:1214 [inline]
snd_pcm_action+0x143/0x170 sound/core/pcm_native.c:1295
snd_pcm_stop sound/core/pcm_native.c:1461 [inline]
snd_pcm_drop+0x1ab/0x320 sound/core/pcm_native.c:2140
snd_pcm_kernel_ioctl+0x12f/0x240 sound/core/pcm_native.c:3342
snd_pcm_oss_change_params_locked+0x194b/0x39a0 sound/core/oss/pcm_oss.c:945
snd_pcm_oss_change_params sound/core/oss/pcm_oss.c:1090 [inline]
snd_pcm_oss_get_active_substream+0x164/0x1c0 sound/core/oss/pcm_oss.c:1107
snd_pcm_oss_get_rate sound/core/oss/pcm_oss.c:1761 [inline]
snd_pcm_oss_set_rate sound/core/oss/pcm_oss.c:1753 [inline]
snd_pcm_oss_ioctl+0x144f/0x3430 sound/core/oss/pcm_oss.c:2604
__do_compat_sys_ioctl+0x1d3/0x230 fs/ioctl.c:842
do_syscall_32_irqs_on arch/x86/entry/common.c:77 [inline]
__do_fast_syscall_32+0x56/0x90 arch/x86/entry/common.c:140
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:165
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f73549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f554c5fc EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00000000c0045002
RDX: 0000000020000240 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000