------------[ cut here ]------------ kernel BUG at fs/io_uring.c:1293! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 9773 Comm: kworker/1:7 Tainted: G W 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 40 53 9a 89 c6 05 4e 32 78 0b 01 e8 e2 73 08 07 e9 6e ff ff ff e8 5e 61 95 ff 0f 0b e8 57 61 95 ff <0f> 0b e8 50 61 95 ff 0f 0b e9 1a fd ff ff e8 34 02 db ff e9 47 fb RSP: 0018:ffffc9000be4fba8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88801ebc4000 RCX: 0000000000000000 RDX: ffff888086cc8140 RSI: ffffffff81df5d59 RDI: ffff88809033c890 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000019 R10: ffffffff81df590c R11: 000000000000000f R12: ffff88803967f1c0 R13: 0000000000000019 R14: ffff88801ebc40b0 R15: ffff88803967f218 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d72f000 CR3: 00000000896ed000 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 64fe66e51ed8c543 ]--- RIP: 0010:io_queue_async_work+0x539/0x5f0 fs/io_uring.c:1293 Code: 89 be 89 00 00 00 48 c7 c7 40 53 9a 89 c6 05 4e 32 78 0b 01 e8 e2 73 08 07 e9 6e ff ff ff e8 5e 61 95 ff 0f 0b e8 57 61 95 ff <0f> 0b e8 50 61 95 ff 0f 0b e9 1a fd ff ff e8 34 02 db ff e9 47 fb RSP: 0018:ffffc9000be4fba8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88801ebc4000 RCX: 0000000000000000 RDX: ffff888086cc8140 RSI: ffffffff81df5d59 RDI: ffff88809033c890 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000019 R10: ffffffff81df590c R11: 000000000000000f R12: ffff88803967f1c0 R13: 0000000000000019 R14: ffff88801ebc40b0 R15: ffff88803967f218 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d527000 CR3: 0000000038e83000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400