------------[ cut here ]------------
kernel BUG at fs/io_uring.c:1293!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 17715 Comm: kworker/0:55 Not tainted 5.14.0-rc1-next-20210715-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events io_fallback_req_func
RIP: 0010:io_queue_async_work+0x539/0x5f0 fs/io_uring.c:1293
Code: 89 be 89 00 00 00 48 c7 c7 80 8b 9a 89 c6 05 c8 54 77 0b 01 e8 e0 40 07 07 e9 6e ff ff ff e8 5e 28 95 ff 0f 0b e8 57 28 95 ff <0f> 0b e8 50 28 95 ff 0f 0b e9 1a fd ff ff e8 d4 3b db ff e9 47 fb
RSP: 0018:ffffc900098ffba8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880a01f3400 RCX: 0000000000000000
RDX: ffff888025f63900 RSI: ffffffff81e09629 RDI: ffff88802d748818
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000043736500
R10: ffffffff81e23bdf R11: 0000000000000000 R12: ffff8880a38e33c0
R13: 0000000000000021 R14: ffff8880a01f34b0 R15: ffff8880a38e3418
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32138000 CR3: 000000007076e000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __io_queue_sqe+0x913/0xf10 fs/io_uring.c:6448
 io_req_task_submit+0x100/0x120 fs/io_uring.c:2020
 io_fallback_req_func+0x81/0xb0 fs/io_uring.c:2441
 process_one_work+0x98d/0x1630 kernel/workqueue.c:2276
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Modules linked in:
---[ end trace 28bb37504f6e12cd ]---
RIP: 0010:io_queue_async_work+0x539/0x5f0 fs/io_uring.c:1293
Code: 89 be 89 00 00 00 48 c7 c7 80 8b 9a 89 c6 05 c8 54 77 0b 01 e8 e0 40 07 07 e9 6e ff ff ff e8 5e 28 95 ff 0f 0b e8 57 28 95 ff <0f> 0b e8 50 28 95 ff 0f 0b e9 1a fd ff ff e8 d4 3b db ff e9 47 fb
RSP: 0018:ffffc900098ffba8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880a01f3400 RCX: 0000000000000000
RDX: ffff888025f63900 RSI: ffffffff81e09629 RDI: ffff88802d748818
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000043736500
R10: ffffffff81e23bdf R11: 0000000000000000 R12: ffff8880a38e33c0
R13: 0000000000000021 R14: ffff8880a01f34b0 R15: ffff8880a38e3418
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055db18d7c478 CR3: 0000000025656000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400