============================================
WARNING: possible recursive locking detected
5.18.0-rc3-syzkaller #0 Not tainted
--------------------------------------------
syz-executor.2/4044 is trying to acquire lock:
ffff888015c1d3d8 (&ctx->timeout_lock){....}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:374 [inline]
ffff888015c1d3d8 (&ctx->timeout_lock){....}-{2:2}, at: io_disarm_next+0x3c6/0x870 fs/io_uring.c:2417

but task is already holding lock:
ffff888015c1d3d8 (&ctx->timeout_lock){....}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:374 [inline]
ffff888015c1d3d8 (&ctx->timeout_lock){....}-{2:2}, at: io_kill_timeouts+0x37/0x1d2 fs/io_uring.c:10054

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&ctx->timeout_lock);
  lock(&ctx->timeout_lock);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

2 locks held by syz-executor.2/4044:
 #0: ffff888015c1d398 (&ctx->completion_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline]
 #0: ffff888015c1d398 (&ctx->completion_lock){+.+.}-{2:2}, at: io_kill_timeouts+0x2f/0x1d2 fs/io_uring.c:10053
 #1: ffff888015c1d3d8 (&ctx->timeout_lock){....}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:374 [inline]
 #1: ffff888015c1d3d8 (&ctx->timeout_lock){....}-{2:2}, at: io_kill_timeouts+0x37/0x1d2 fs/io_uring.c:10054

stack backtrace:
CPU: 0 PID: 4044 Comm: syz-executor.2 Not tainted 5.18.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x57/0x7d lib/dump_stack.c:106
 print_deadlock_bug kernel/locking/lockdep.c:2958 [inline]
 check_deadlock kernel/locking/lockdep.c:3001 [inline]
 validate_chain kernel/locking/lockdep.c:3790 [inline]
 __lock_acquire.cold+0x149/0x399 kernel/locking/lockdep.c:5029
 lock_acquire kernel/locking/lockdep.c:5641 [inline]
 lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5606
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
 _raw_spin_lock_irq+0x32/0x50 kernel/locking/spinlock.c:170
 spin_lock_irq include/linux/spinlock.h:374 [inline]
 io_disarm_next+0x3c6/0x870 fs/io_uring.c:2417
 __io_req_complete_post+0x6d6/0xd00 fs/io_uring.c:2154
 io_kill_timeouts+0xc1/0x1d2 fs/io_uring.c:10057
 io_ring_ctx_wait_and_kill+0x180/0x2f0 fs/io_uring.c:10084
 io_uring_release+0x3d/0x41 fs/io_uring.c:10105
 __fput+0x1f5/0x8c0 fs/file_table.c:317
 task_work_run+0xc0/0x160 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:37 [inline]
 do_exit+0x986/0x2470 kernel/exit.c:795
 do_group_exit+0xb2/0x2a0 kernel/exit.c:925
 get_signal+0x1c12/0x1e50 kernel/signal.c:2864
 arch_do_signal_or_restart+0x82/0x20f0 arch/x86/kernel/signal.c:867
 exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
 exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fe5f22890e9
Code: Unable to access opcode bytes at RIP 0x7fe5f22890bf.
RSP: 002b:00007fe5f3376218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fe5f239bf68 RCX: 00007fe5f22890e9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fe5f239bf6c
RBP: 00007fe5f239bf60 R08: 00007ffca395d080 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 00007fe5f239bf6c
R13: 00007ffca389921f R14: 00007fe5f3376300 R15: 0000000000022000
 </TASK>