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kernel BUG at fs/io_uring.c:1293!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4834 Comm: kworker/1:3 Tainted: G        W         5.13.0-next-20210708-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 00 8a 9a 89 c6 05 28 5f 77 0b 01 e8 be e9 06 07 e9 6e ff ff ff e8 be 1e 95 ff 0f 0b e8 b7 1e 95 ff <0f> 0b e8 b0 1e 95 ff 0f 0b e9 1a fd ff ff e8 d4 2f db ff e9 47 fb
RSP: 0018:ffffc9000bfdfba8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888061fd1400 RCX: 0000000000000000
RDX: ffff888028c0b900 RSI: ffffffff81e07d49 RDI: ffff888065f3c118
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000043736500
R10: ffffffff81e222ff R11: 0000000000000000 R12: ffff88802ec623c0
R13: 0000000000000019 R14: ffff888061fd14b0 R15: ffff88802ec62418
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000544038 CR3: 000000001d5a8000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __io_queue_sqe+0x913/0xf10 fs/io_uring.c:6444
 io_req_task_submit+0x100/0x120 fs/io_uring.c:2020
 io_fallback_req_func+0x81/0xb0 fs/io_uring.c:2437
 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 d8cfb71d33872eee ]---
RIP: 0010:io_queue_async_work+0x539/0x5f0 fs/io_uring.c:1293
Code: 89 be 89 00 00 00 48 c7 c7 00 8a 9a 89 c6 05 28 5f 77 0b 01 e8 be e9 06 07 e9 6e ff ff ff e8 be 1e 95 ff 0f 0b e8 b7 1e 95 ff <0f> 0b e8 b0 1e 95 ff 0f 0b e9 1a fd ff ff e8 d4 2f db ff e9 47 fb
RSP: 0018:ffffc9000bfdfba8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888061fd1400 RCX: 0000000000000000
RDX: ffff888028c0b900 RSI: ffffffff81e07d49 RDI: ffff888065f3c118
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000043736500
R10: ffffffff81e222ff R11: 0000000000000000 R12: ffff88802ec623c0
R13: 0000000000000019 R14: ffff888061fd14b0 R15: ffff88802ec62418
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002001d000 CR3: 000000005994a000 CR4: 00000000001526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400