------------[ cut here ]------------
WARNING: CPU: 0 PID: 259 at fs/io_uring.c:1164 req_ref_get fs/io_uring.c:1164 [inline]
WARNING: CPU: 0 PID: 259 at fs/io_uring.c:1164 io_wq_submit_work+0x350/0x600 fs/io_uring.c:6731
Modules linked in:
CPU: 0 PID: 259 Comm: kworker/u4:5 Not tainted 5.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound io_ring_exit_work
RIP: 0010:req_ref_get fs/io_uring.c:1164 [inline]
RIP: 0010:io_wq_submit_work+0x350/0x600 fs/io_uring.c:6731
Code: 04 00 00 00 e8 51 81 d9 ff 48 89 e8 48 c1 e8 03 42 8a 04 30 84 c0 0f 85 62 02 00 00 c7 45 00 01 00 00 00 eb 1b e8 b0 41 8e ff <0f> 0b e9 b0 fd ff ff e8 a4 41 8e ff 49 be 00 00 00 00 00 fc ff df
RSP: 0018:ffffc900011bf748 EFLAGS: 00010293
RAX: ffffffff81f406b0 RBX: 000000000000007f RCX: ffff8880131b1c80
RDX: 0000000000000000 RSI: 000000000000007f RDI: 0000000000000080
RBP: ffff8880454da91c R08: ffffffff81f40456 R09: ffffed1008a9b524
R10: ffffed1008a9b524 R11: 0000000000000000 R12: ffff8880454da918
R13: ffff8880454da8c0 R14: ffff8880454da978 R15: 1ffff11008a9b523
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000970004 CR3: 000000005a279000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 io_run_cancel fs/io-wq.c:809 [inline]
 io_acct_cancel_pending_work+0x382/0x590 fs/io-wq.c:950
 io_wqe_cancel_pending_work fs/io-wq.c:968 [inline]
 io_wq_cancel_cb+0x26e/0xc80 fs/io-wq.c:1003
 io_uring_try_cancel_iowq fs/io_uring.c:9471 [inline]
 io_uring_try_cancel_requests+0x334/0xc50 fs/io_uring.c:9491
 io_ring_exit_work+0x111/0x1a60 fs/io_uring.c:9291
 process_one_work+0x853/0x1140 kernel/workqueue.c:2297
 worker_thread+0xac1/0x1320 kernel/workqueue.c:2444
 kthread+0x453/0x480 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30