------------[ cut here ]------------ kernel BUG at fs/io_uring.c:1293! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 24762 Comm: kworker/1:4 Not tainted 5.14.0-rc1-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 86 9a 89 c6 05 28 1c 77 0b 01 e8 28 2d 07 07 e9 6e ff ff ff e8 fe fd 94 ff 0f 0b e8 f7 fd 94 ff <0f> 0b e8 f0 fd 94 ff 0f 0b e9 1a fd ff ff e8 84 1d db ff e9 47 fb RSP: 0018:ffffc900141e7ba8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88801ea9b400 RCX: 0000000000000000 RDX: ffff88807cf00000 RSI: ffffffff81e089c9 RDI: ffff888025120810 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff81e230a7 R11: 0000000000000000 R12: ffff888064b91640 R13: 0000000000000021 R14: ffff88801ea9b4b0 R15: ffff888064b91698 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d828000 CR3: 0000000033b35000 CR4: 00000000001526e0 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 c6aae8f29daf9d8c ]--- RIP: 0010:io_queue_async_work+0x539/0x5f0 fs/io_uring.c:1293 Code: 89 be 89 00 00 00 48 c7 c7 00 86 9a 89 c6 05 28 1c 77 0b 01 e8 28 2d 07 07 e9 6e ff ff ff e8 fe fd 94 ff 0f 0b e8 f7 fd 94 ff <0f> 0b e8 f0 fd 94 ff 0f 0b e9 1a fd ff ff e8 84 1d db ff e9 47 fb RSP: 0018:ffffc900141e7ba8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88801ea9b400 RCX: 0000000000000000 RDX: ffff88807cf00000 RSI: ffffffff81e089c9 RDI: ffff888025120810 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff81e230a7 R11: 0000000000000000 R12: ffff888064b91640 R13: 0000000000000021 R14: ffff88801ea9b4b0 R15: ffff888064b91698 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f448eab7718 CR3: 000000009be5d000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400