============================================
WARNING: possible recursive locking detected
5.16.0-rc5-syzkaller #0 Not tainted
--------------------------------------------
syz-executor.2/18196 is trying to acquire lock:
ffff888019321130 (&runtime->sleep){..-.}-{2:2}, at: io_poll_double_wake+0x2be/0x820 fs/io_uring.c:5463
but task is already holding lock:
ffff888019325130 (&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
4 locks held by syz-executor.2/18196:
#0: ffff8880193220a8 (&ctx->uring_lock){+.+.}-{3:3}, at: __do_sys_io_uring_enter+0xf60/0x1f50 fs/io_uring.c:10071
#1: ffffffff8bb83e60 (rcu_read_lock){....}-{1:2}, at: is_bpf_text_address+0x0/0x170 kernel/bpf/core.c:702
#2: ffff88814abf4910 (&group->lock){..-.}-{2:2}, at: _snd_pcm_stream_lock_irqsave+0x9f/0xd0 sound/core/pcm_native.c:170
#3: ffff888019325130 (&runtime->sleep){..-.}-{2:2}, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:137
stack backtrace:
CPU: 0 PID: 18196 Comm: syz-executor.2 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_deadlock_bug kernel/locking/lockdep.c:2956 [inline]
check_deadlock kernel/locking/lockdep.c:2999 [inline]
validate_chain kernel/locking/lockdep.c:3788 [inline]
__lock_acquire.cold+0x149/0x3ab kernel/locking/lockdep.c:5027
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
io_poll_double_wake+0x2be/0x820 fs/io_uring.c:5463
__wake_up_common+0x147/0x650 kernel/sched/wait.c:108
__wake_up_common_lock+0xd0/0x130 kernel/sched/wait.c:138
snd_pcm_update_state+0x46a/0x540 sound/core/pcm_lib.c:204
snd_pcm_update_hw_ptr0+0xa75/0x1a50 sound/core/pcm_lib.c:465
snd_pcm_period_elapsed_under_stream_lock+0x15a/0x230 sound/core/pcm_lib.c:1817
snd_pcm_period_elapsed+0x28/0x50 sound/core/pcm_lib.c:1849
dummy_hrtimer_callback+0x94/0x1b0 sound/drivers/dummy.c:377
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749
hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1766
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5605
Code: b2 a5 7e 83 f8 01 0f 85 b4 02 00 00 9c 58 f6 c4 02 0f 85 9f 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc9000fef7418 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92001fdee85 RCX: d60eeb31a0b87250
RDX: 1ffff1100393f88b RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8ff74a07
R10: fffffbfff1fee940 R11: 000000000008808a R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8bb83e60 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
rcu_read_lock include/linux/rcupdate.h:688 [inline]
is_bpf_text_address+0x36/0x170 kernel/bpf/core.c:715
kernel_text_address kernel/extable.c:124 [inline]
kernel_text_address+0x39/0x80 kernel/extable.c:93
__kernel_text_address+0x9/0x30 kernel/extable.c:78
unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline]
unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:313
arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc mm/kasan/common.c:513 [inline]
____kasan_kmalloc mm/kasan/common.c:472 [inline]
__kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:522
kmalloc include/linux/slab.h:590 [inline]
__io_queue_proc+0x2c8/0x8c0 fs/io_uring.c:5522
poll_wait include/linux/poll.h:51 [inline]
snd_pcm_oss_poll+0x2b6/0xb10 sound/core/oss/pcm_oss.c:2860
vfs_poll include/linux/poll.h:90 [inline]
__io_arm_poll_handler+0x3a1/0xcf0 fs/io_uring.c:5617
io_arm_poll_handler+0x322/0x800 fs/io_uring.c:5683
io_queue_sqe_arm_apoll+0x61/0x1a0 fs/io_uring.c:6995
__io_queue_sqe fs/io_uring.c:7033 [inline]
io_queue_sqe fs/io_uring.c:7060 [inline]
io_submit_sqe fs/io_uring.c:7263 [inline]
io_submit_sqes+0x796a/0x8a20 fs/io_uring.c:7369
__do_sys_io_uring_enter+0xf6e/0x1f50 fs/io_uring.c:10072
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f473d22ce99
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f473bba2168 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007f473d33ff60 RCX: 00007f473d22ce99
RDX: 0000000000000000 RSI: 00000000000002ff RDI: 0000000000000003
RBP: 00007f473d286ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f473d873b1f R14: 00007f473bba2300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: b2 a5 mov $0xa5,%dl
2: 7e 83 jle 0xffffff87
4: f8 clc
5: 01 0f add %ecx,(%rdi)
7: 85 b4 02 00 00 9c 58 test %esi,0x589c0000(%rdx,%rax,1)
e: f6 c4 02 test $0x2,%ah
11: 0f 85 9f 02 00 00 jne 0x2b6
17: 48 83 7c 24 08 00 cmpq $0x0,0x8(%rsp)
1d: 74 01 je 0x20
1f: fb sti
20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
27: fc ff df
* 2a: 48 01 c3 add %rax,%rbx <-- trapping instruction
2d: 48 c7 03 00 00 00 00 movq $0x0,(%rbx)
34: 48 c7 43 08 00 00 00 movq $0x0,0x8(%rbx)
3b: 00
3c: 48 rex.W
3d: 8b .byte 0x8b
3e: 84 .byte 0x84
3f: 24 .byte 0x24