ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 ---[ end trace 6ecad40ae0e8c924 ]--- blk_update_request: I/O error, dev sda, sector 1212408 op 0x1:(WRITE) flags 0xc800 phys_seg 0 prio class 0 ------------[ cut here ]------------ kernel BUG at block/blk-mq.c:567! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 78 Comm: kworker/1:1H Tainted: G W 5.10.117-syzkaller-00813-g0974b8411a58 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: kblockd blk_mq_requeue_work RIP: 0010:blk_mq_end_request block/blk-mq.c:567 [inline] RIP: 0010:blk_mq_dispatch_rq_list+0x17f5/0x1800 block/blk-mq.c:1395 Code: 68 ff e9 24 f5 ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 25 fe ff ff 4c 89 ef e8 e5 b5 68 ff e9 18 fe ff ff e8 fb df 2e ff <0f> 0b e8 74 e8 52 02 0f 1f 40 00 55 48 89 e5 41 57 41 56 41 55 41 RSP: 0018:ffffc9000028f700 EFLAGS: 00010293 RAX: ffffffff823dd255 RBX: ffff88810a9a61c0 RCX: ffff88810559bb40 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88810a9a628a RBP: ffffc9000028f870 R08: ffffffff823ca37f R09: ffffffff823ca315 R10: 0000000000000004 R11: ffff88810559bb40 R12: dffffc0000000000 R13: ffffc9000028f960 R14: ffff88810179c000 R15: 1ffff92000051f2c FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6e56163028 CR3: 00000001481a9000 CR4: 00000000003526a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __blk_mq_do_dispatch_sched block/blk-mq-sched.c:186 [inline] blk_mq_do_dispatch_sched+0x63c/0xc60 block/blk-mq-sched.c:200 __blk_mq_sched_dispatch_requests+0x3de/0x4d0 block/blk-mq-sched.c:317 blk_mq_sched_dispatch_requests+0xf0/0x160 block/blk-mq-sched.c:348 __blk_mq_run_hw_queue+0x14d/0x260 block/blk-mq.c:1521 __blk_mq_delay_run_hw_queue+0x22a/0x570 block/blk-mq.c:1598 blk_mq_run_hw_queue+0x29d/0x3b0 block/blk-mq.c:1651 blk_mq_run_hw_queues+0x37c/0x450 block/blk-mq.c:1714 blk_mq_requeue_work+0x73b/0x780 block/blk-mq.c:819 process_one_work+0x726/0xc10 kernel/workqueue.c:2296 worker_thread+0xb27/0x1550 kernel/workqueue.c:2442 kthread+0x349/0x3d0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Modules linked in: ---[ end trace 6ecad40ae0e8c925 ]--- RIP: 0010:blk_mq_end_request block/blk-mq.c:567 [inline] RIP: 0010:blk_mq_dispatch_rq_list+0x17f5/0x1800 block/blk-mq.c:1395 Code: 68 ff e9 24 f5 ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 25 fe ff ff 4c 89 ef e8 e5 b5 68 ff e9 18 fe ff ff e8 fb df 2e ff <0f> 0b e8 74 e8 52 02 0f 1f 40 00 55 48 89 e5 41 57 41 56 41 55 41 RSP: 0018:ffffc9000028f700 EFLAGS: 00010293 RAX: ffffffff823dd255 RBX: ffff88810a9a61c0 RCX: ffff88810559bb40 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88810a9a628a RBP: ffffc9000028f870 R08: ffffffff823ca37f R09: ffffffff823ca315 R10: 0000000000000004 R11: ffff88810559bb40 R12: dffffc0000000000 R13: ffffc9000028f960 R14: ffff88810179c000 R15: 1ffff92000051f2c FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6e56163028 CR3: 00000001481a9000 CR4: 00000000003526a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400