============================================
WARNING: possible recursive locking detected
5.16.0-rc3-syzkaller #0 Not tainted
--------------------------------------------
iou-wrk-14925/14949 is trying to acquire lock:
ffff888036706130 (&runtime->sleep){..-.}-{2:2}, at: io_poll_double_wake+0x2be/0x820 fs/io_uring.c:5463
but task is already holding lock:
ffff888015dfc130 (&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
5 locks held by iou-wrk-14925/14949:
#0: ffff88807dec5978 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline]
#0: ffff88807dec5978 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_pte_range mm/memory.c:1323 [inline]
#0: ffff88807dec5978 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_pmd_range mm/memory.c:1467 [inline]
#0: ffff88807dec5978 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_pud_range mm/memory.c:1496 [inline]
#0: ffff88807dec5978 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_p4d_range mm/memory.c:1517 [inline]
#0: ffff88807dec5978 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: unmap_page_range+0x86b/0x29f0 mm/memory.c:1538
#1: ffffffff8bb83ca0 (rcu_read_lock){....}-{1:2}, at: folio_memcg_lock+0x0/0x3e0 include/linux/cgroup.h:312
#2: ffffc90000007d70 ((&dpcm->timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:35 [inline]
#2: ffffc90000007d70 ((&dpcm->timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x6b0 kernel/time/timer.c:1411
#3: ffff8880228bf910 (&group->lock){..-.}-{2:2}, at: _snd_pcm_stream_lock_irqsave+0x9f/0xd0 sound/core/pcm_native.c:170
#4: ffff888015dfc130 (&runtime->sleep){..-.}-{2:2}, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:137
stack backtrace:
CPU: 0 PID: 14949 Comm: iou-wrk-14925 Not tainted 5.16.0-rc3-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
loopback_jiffies_timer_function+0x1c4/0x240 sound/drivers/aloop.c:668
call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734
__run_timers kernel/time/timer.c:1715 [inline]
run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
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_is_held_type+0xff/0x140 kernel/locking/lockdep.c:5685
Code: 00 00 b8 ff ff ff ff 65 0f c1 05 0c 69 be 76 83 f8 01 75 29 9c 58 f6 c4 02 75 3d 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 45 31 ed eb b9 0f 0b 48
RSP: 0018:ffffc90002b4f7c8 EFLAGS: 00000282
RAX: 0000000000000046 RBX: 0000000000000002 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffffff8bb83be0 R08: 0000000000000000 R09: ffffffff8d912ad7
R10: fffffbfff1b2255a R11: 0000000000000000 R12: ffff88802685ba00
R13: 0000000000000000 R14: 00000000ffffffff R15: ffff88802685c488
lock_is_held include/linux/lockdep.h:283 [inline]
rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:125
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x522/0x720 kernel/locking/lockdep.c:5648
zap_pte_range mm/memory.c:1357 [inline]
zap_pmd_range mm/memory.c:1467 [inline]
zap_pud_range mm/memory.c:1496 [inline]
zap_p4d_range mm/memory.c:1517 [inline]
unmap_page_range+0xf0e/0x29f0 mm/memory.c:1538
unmap_single_vma+0x198/0x310 mm/memory.c:1583
unmap_vmas+0x16b/0x2f0 mm/memory.c:1615
exit_mmap+0x1d0/0x630 mm/mmap.c:3170
__mmput+0x122/0x4b0 kernel/fork.c:1113
mmput+0x56/0x60 kernel/fork.c:1134
exit_mm kernel/exit.c:507 [inline]
do_exit+0xb27/0x2b40 kernel/exit.c:819
io_worker_exit fs/io-wq.c:234 [inline]
io_wqe_worker+0x9c6/0xcb0 fs/io-wq.c:651
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: b8 ff ff ff ff mov $0xffffffff,%eax
7: 65 0f c1 05 0c 69 be xadd %eax,%gs:0x76be690c(%rip) # 0x76be691b
e: 76
f: 83 f8 01 cmp $0x1,%eax
12: 75 29 jne 0x3d
14: 9c pushfq
15: 58 pop %rax
16: f6 c4 02 test $0x2,%ah
19: 75 3d jne 0x58
1b: 48 f7 04 24 00 02 00 testq $0x200,(%rsp)
22: 00
23: 74 01 je 0x26
25: fb sti
26: 48 83 c4 08 add $0x8,%rsp
* 2a: 44 89 e8 mov %r13d,%eax <-- trapping instruction
2d: 5b pop %rbx
2e: 5d pop %rbp
2f: 41 5c pop %r12
31: 41 5d pop %r13
33: 41 5e pop %r14
35: 41 5f pop %r15
37: c3 retq
38: 45 31 ed xor %r13d,%r13d
3b: eb b9 jmp 0xfffffff6
3d: 0f 0b ud2
3f: 48 rex.W