------------[ cut here ]------------
WARNING: io_uring/io_uring.h:127 at io_ring_ctx_lock io_uring/io_uring.h:127 [inline], CPU#1: iou-sqp-6294/6297
WARNING: io_uring/io_uring.h:127 at io_handle_tw_list+0x234/0x2e0 io_uring/io_uring.c:1155, CPU#1: iou-sqp-6294/6297
Modules linked in:
CPU: 1 UID: 0 PID: 6297 Comm: iou-sqp-6294 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:io_ring_ctx_lock io_uring/io_uring.h:127 [inline]
RIP: 0010:io_handle_tw_list+0x234/0x2e0 io_uring/io_uring.c:1155
Code: 00 00 48 c7 c7 e0 90 02 8c be 8e 04 00 00 31 d2 e8 01 e5 d2 fc 2e 2e 2e 31 c0 45 31 e4 4d 85 ff 75 89 eb 7c e8 ad fb 00 fd 90 <0f> 0b 90 e9 cf fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 22 ff
RSP: 0018:ffffc900032cf938 EFLAGS: 00010293
RAX: ffffffff84bfcba3 RBX: dffffc0000000000 RCX: ffff888107f61cc0
RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000000000000
RBP: ffff8881119a8008 R08: ffff888110bb69c7 R09: 1ffff11022176d38
R10: dffffc0000000000 R11: ffffed1022176d39 R12: ffff8881119a8000
R13: ffff888108441e90 R14: ffff888107f61cc0 R15: 0000000000000000
FS:  00007f81f25716c0(0000) GS:ffff8881a39f5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31b63fff CR3: 000000010f24c000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 tctx_task_work_run+0x99/0x370 io_uring/io_uring.c:1223
 io_sq_tw io_uring/sqpoll.c:244 [inline]
 io_sq_thread+0xed1/0x1e50 io_uring/sqpoll.c:327
 ret_from_fork+0x47f/0x820 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>