ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 ---[ end trace b28bef029ad296a5 ]--- blk_update_request: I/O error, dev sda, sector 655352 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 5.10.94-syzkaller-00566-g34fd8cb7e75c #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+0x17d2/0x17e0 block/blk-mq.c:1395 Code: 60 ff e9 45 f5 ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 70 f6 ff ff 4c 89 ef e8 98 fe 60 ff e9 63 f6 ff ff e8 0e 09 27 ff <0f> 0b e8 37 a1 55 02 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 RSP: 0018:ffffc900002ef740 EFLAGS: 00010293 RAX: ffffffff8245e512 RBX: ffff88810ad24400 RCX: ffff8881063ca780 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88810ad244ca RBP: ffffc900002ef8b0 R08: ffffffff8244b60f R09: ffffffff8244b5a6 R10: 0000000000000004 R11: ffff8881063ca780 R12: dffffc0000000000 R13: ffffc900002ef980 R14: ffff88810a2d0000 R15: 1ffff9200005df30 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000021000000 CR3: 000000014fc30000 CR4: 00000000003506a0 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+0x623/0xbb0 block/blk-mq-sched.c:199 __blk_mq_sched_dispatch_requests+0x3de/0x4d0 block/blk-mq-sched.c:310 blk_mq_sched_dispatch_requests+0xf0/0x160 block/blk-mq-sched.c:341 __blk_mq_run_hw_queue+0x14f/0x260 block/blk-mq.c:1521 __blk_mq_delay_run_hw_queue+0x230/0x570 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+0x7e6/0x830 block/blk-mq.c:819 process_one_work+0x6b4/0xfb0 kernel/workqueue.c:2298 worker_thread+0xb15/0x1600 kernel/workqueue.c:2444 kthread+0x371/0x390 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Modules linked in: ---[ end trace b28bef029ad296a6 ]--- RIP: 0010:blk_mq_end_request block/blk-mq.c:567 [inline] RIP: 0010:blk_mq_dispatch_rq_list+0x17d2/0x17e0 block/blk-mq.c:1395 Code: 60 ff e9 45 f5 ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 70 f6 ff ff 4c 89 ef e8 98 fe 60 ff e9 63 f6 ff ff e8 0e 09 27 ff <0f> 0b e8 37 a1 55 02 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 RSP: 0018:ffffc900002ef740 EFLAGS: 00010293 RAX: ffffffff8245e512 RBX: ffff88810ad24400 RCX: ffff8881063ca780 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88810ad244ca RBP: ffffc900002ef8b0 R08: ffffffff8244b60f R09: ffffffff8244b5a6 R10: 0000000000000004 R11: ffff8881063ca780 R12: dffffc0000000000 R13: ffffc900002ef980 R14: ffff88810a2d0000 R15: 1ffff9200005df30 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000021000000 CR3: 000000014fc30000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400