OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.253' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 73.827585][ T8427] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 73.839492][ T8427] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 73.847938][ T8427] CPU: 1 PID: 8427 Comm: syz-executor266 Not tainted 5.12.0-rc4-next-20210326-syzkaller #0 [ 73.857920][ T8427] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.867983][ T8427] RIP: 0010:scsi_queue_rq+0x27b4/0x35a0 [ 73.873540][ T8427] Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 3c 0d 00 00 4c 8b ab 58 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 01 0d 00 00 [ 73.893682][ T8427] RSP: 0018:ffffc90001b4f578 EFLAGS: 00010246 [ 73.899885][ T8427] RAX: dffffc0000000000 RBX: ffff88801ce90800 RCX: 0000000000000000 [ 73.907854][ T8427] RDX: 0000000000000000 RSI: ffffffff84749da1 RDI: 0000000000000003 [ 73.916435][ T8427] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 73.924395][ T8427] R10: ffffffff84749d8c R11: 0000000000000000 R12: ffff88801ce90a58 [ 73.932369][ T8427] R13: 0000000000000000 R14: 0000000000000000 R15: ffff888142d04000 [ 73.940332][ T8427] FS: 00007fc571a41700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 73.949351][ T8427] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.955942][ T8427] CR2: 0000561d0dd98100 CR3: 0000000028d99000 CR4: 00000000001506e0 [ 73.963917][ T8427] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.971966][ T8427] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.979929][ T8427] Call Trace: [ 73.983200][ T8427] blk_mq_dispatch_rq_list+0x422/0x1fa0 [ 73.988772][ T8427] ? blk_mq_dequeue_from_ctx+0x940/0x940 [ 73.994406][ T8427] ? do_raw_spin_lock+0x120/0x2b0 [ 73.999422][ T8427] ? rwlock_bug.part.0+0x90/0x90 [ 74.004369][ T8427] __blk_mq_sched_dispatch_requests+0x263/0x490 [ 74.010631][ T8427] ? blk_mq_do_dispatch_ctx+0x6c0/0x6c0 [ 74.016289][ T8427] blk_mq_sched_dispatch_requests+0xfb/0x180 [ 74.022260][ T8427] __blk_mq_run_hw_queue+0xd8/0x150 [ 74.027534][ T8427] ? hctx_unlock+0x170/0x170 [ 74.032119][ T8427] __blk_mq_delay_run_hw_queue+0x4d9/0x5a0 [ 74.037918][ T8427] blk_mq_run_hw_queue+0x16c/0x2f0 [ 74.043071][ T8427] ? blk_mq_delay_run_hw_queues+0x4a0/0x4a0 [ 74.048961][ T8427] ? do_raw_spin_unlock+0x171/0x230 [ 74.054171][ T8427] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 74.061532][ T8427] ? blk_mq_request_bypass_insert+0x14e/0x2f0 [ 74.067597][ T8427] blk_mq_sched_insert_request+0x3e5/0x4c0 [ 74.073424][ T8427] ? update_io_ticks+0xc7/0x1b0 [ 74.078271][ T8427] ? __blk_mq_sched_bio_merge+0x450/0x450 [ 74.084080][ T8427] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 74.090352][ T8427] ? blk_account_io_start+0x194/0x250 [ 74.095749][ T8427] blk_execute_rq+0xcf/0x1b0 [ 74.100397][ T8427] ? blk_end_sync_rq+0x50/0x50 [ 74.105161][ T8427] ? sg_io+0xc6d/0xf50 [ 74.109553][ T8427] sg_io+0x602/0xf50 [ 74.113446][ T8427] ? put_sg_io_hdr+0x6f0/0x6f0 [ 74.118203][ T8427] ? lock_downgrade+0x6e0/0x6e0 [ 74.123048][ T8427] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 74.129293][ T8427] scsi_cmd_ioctl+0x519/0x580 [ 74.133983][ T8427] ? sg_scsi_ioctl+0x7f0/0x7f0 [ 74.138756][ T8427] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 74.145166][ T8427] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 74.151436][ T8427] ? security_capable+0x8f/0xc0 [ 74.156292][ T8427] scsi_cmd_blk_ioctl+0xe1/0x130 [ 74.161230][ T8427] sd_ioctl_common+0x17e/0x280 [ 74.165994][ T8427] ? lock_downgrade+0x6e0/0x6e0 [ 74.170847][ T8427] ? sd_compat_ioctl+0xf0/0xf0 [ 74.175702][ T8427] sd_ioctl+0x26/0xf0 [ 74.179675][ T8427] blkdev_ioctl+0x2a1/0x6d0 [ 74.184176][ T8427] ? blkdev_common_ioctl+0x17e0/0x17e0 [ 74.189654][ T8427] ? __fget_files+0x288/0x3d0 [ 74.194325][ T8427] block_ioctl+0xf9/0x140 [ 74.198744][ T8427] ? blkdev_read_iter+0x180/0x180 [ 74.203782][ T8427] __x64_sys_ioctl+0x193/0x200 [ 74.208532][ T8427] do_syscall_64+0x2d/0x70 [ 74.213038][ T8427] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 74.218928][ T8427] RIP: 0033:0x445569 [ 74.222812][ T8427] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 74.242617][ T8427] RSP: 002b:00007fc571a412f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 74.251025][ T8427] RAX: ffffffffffffffda RBX: 00000000004cc4e0 RCX: 0000000000445569 [ 74.259313][ T8427] RDX: 00000000200046c0 RSI: 0000000000002285 RDI: 0000000000000004 [ 74.267419][ T8427] RBP: 000000000049c03c R08: 0000000000000000 R09: 0000000000000000 [ 74.275572][ T8427] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 [ 74.283539][ T8427] R13: 000000000049c060 R14: 2f30656c69662f2e R15: 00000000004cc4e8 [ 74.291523][ T8427] Modules linked in: [ 74.295613][ T8427] ---[ end trace 6ab019e1163ba199 ]--- [ 74.301091][ T8427] RIP: 0010:scsi_queue_rq+0x27b4/0x35a0 [ 74.306728][ T8427] Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 3c 0d 00 00 4c 8b ab 58 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 01 0d 00 00 [ 74.326457][ T8427] RSP: 0018:ffffc90001b4f578 EFLAGS: 00010246 [ 74.332547][ T8427] RAX: dffffc0000000000 RBX: ffff88801ce90800 RCX: 0000000000000000 [ 74.340648][ T8427] RDX: 0000000000000000 RSI: ffffffff84749da1 RDI: 0000000000000003 [ 74.348723][ T8427] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 74.356781][ T8427] R10: ffffffff84749d8c R11: 0000000000000000 R12: ffff88801ce90a58 [ 74.365034][ T8427] R13: 0000000000000000 R14: 0000000000000000 R15: ffff888142d04000 [ 74.373894][ T8427] FS: 00007fc571a41700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 74.384401][ T8427] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.390998][ T8427] CR2: 0000561d0dd98100 CR3: 0000000028d99000 CR4: 00000000001506e0 [ 74.399056][ T8427] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.407489][ T8427] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.415560][ T8427] Kernel panic - not syncing: Fatal exception [ 74.422255][ T8427] Kernel Offset: disabled [ 74.426596][ T8427] Rebooting in 86400 seconds..