[ 27.225889] audit: type=1800 audit(1540937632.926:27): pid=5569 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 27.264473] audit: type=1800 audit(1540937632.926:28): pid=5569 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 27.886807] audit: type=1800 audit(1540937633.636:29): pid=5569 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 27.914103] audit: type=1800 audit(1540937633.636:30): pid=5569 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 33.180585] sshd (5707) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.10.31' (ECDSA) to the list of known hosts. executing program executing program [ 39.790922] divide error: 0000 [#1] PREEMPT SMP KASAN [ 39.796160] CPU: 1 PID: 5725 Comm: syz-executor422 Not tainted 4.19.0+ #311 [ 39.803249] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.812601] RIP: 0010:vivid_vid_cap_s_dv_timings+0x60e/0x11e0 [ 39.818475] Code: c6 84 c9 0f 95 c1 40 84 ce 0f 85 ce 0a 00 00 83 e0 07 38 c2 0f 9e c1 84 d2 0f 95 c0 84 c1 0f 85 b9 0a 00 00 48 8b 43 14 31 d2 <41> f7 f7 48 ba 00 00 00 00 00 fc ff df 4c 8d 7b 40 89 85 64 ff ff [ 39.837385] RSP: 0018:ffff8801ba28f630 EFLAGS: 00010246 [ 39.842734] RAX: 0000000000d59f80 RBX: ffff8801d8515100 RCX: 0000000000000001 [ 39.849988] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801d8515114 [ 39.857242] RBP: ffff8801ba28f6f0 R08: 0000000000000001 R09: ffffed00396ce024 [ 39.864516] R10: ffffed00396ce024 R11: ffff8801cb670123 R12: ffff8801cb670080 [ 39.871771] R13: 1ffff10037451ecd R14: 0000000000000000 R15: 0000000000000000 [ 39.879029] FS: 00000000018d0880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 39.887238] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.893107] CR2: 00000000006cf090 CR3: 00000001d5e74000 CR4: 00000000001406e0 [ 39.900380] Call Trace: [ 39.902962] ? v4l2_prio_open+0x140/0x140 [ 39.907121] ? vivid_vid_cap_s_std+0x230/0x230 [ 39.911711] vidioc_s_dv_timings+0xa4/0xc0 [ 39.915936] ? lock_downgrade+0x900/0x900 [ 39.920084] v4l_stub_s_dv_timings+0x4f/0x60 [ 39.924507] __video_do_ioctl+0x519/0xf00 [ 39.928658] ? usercopy_warn+0x110/0x110 [ 39.932729] ? v4l_s_fmt+0x990/0x990 [ 39.936436] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 39.941982] video_usercopy+0x5c1/0x1760 [ 39.946031] ? v4l_s_fmt+0x990/0x990 [ 39.949733] ? v4l_enumstd+0x70/0x70 [ 39.953440] ? __handle_mm_fault+0xa57/0x5be0 [ 39.957933] ? vmf_insert_mixed_mkwrite+0x40/0x40 [ 39.962766] ? zap_class+0x640/0x640 [ 39.966469] ? zap_class+0x640/0x640 [ 39.970174] ? zap_class+0x640/0x640 [ 39.973878] ? find_held_lock+0x36/0x1c0 [ 39.977927] ? video_usercopy+0x1760/0x1760 [ 39.982236] video_ioctl2+0x2c/0x33 [ 39.985853] v4l2_ioctl+0x154/0x1b0 [ 39.989465] ? video_devdata+0xa0/0xa0 [ 39.993347] do_vfs_ioctl+0x1de/0x1720 [ 39.997251] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 40.002539] ? rcu_softirq_qs+0x20/0x20 [ 40.006520] ? ioctl_preallocate+0x300/0x300 [ 40.010916] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.016455] ? __fget_light+0x2e9/0x430 [ 40.020434] ? fget_raw+0x20/0x20 [ 40.023876] ? kasan_check_write+0x14/0x20 [ 40.028098] ? up_read+0x225/0x2c0 [ 40.031626] ? up_read_non_owner+0x100/0x100 [ 40.036031] ? do_syscall_64+0x9a/0x820 [ 40.039990] ? do_syscall_64+0x9a/0x820 [ 40.043950] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 40.048520] ? security_file_ioctl+0x94/0xc0 [ 40.052916] ksys_ioctl+0xa9/0xd0 [ 40.056373] __x64_sys_ioctl+0x73/0xb0 [ 40.060267] do_syscall_64+0x1b9/0x820 [ 40.064143] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 40.069502] ? syscall_return_slowpath+0x5e0/0x5e0 [ 40.074419] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.079268] ? trace_hardirqs_on_caller+0x310/0x310 [ 40.084284] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 40.089295] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.094818] ? prepare_exit_to_usermode+0x291/0x3b0 [ 40.099955] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.104789] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 40.109964] RIP: 0033:0x444c19 [ 40.113169] Code: e8 0c ad 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 db ce fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 40.132075] RSP: 002b:00007ffe1a5bfae8 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 40.139770] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000444c19 [ 40.147242] RDX: 0000000020000000 RSI: 00000000c0845657 RDI: 0000000000000003 [ 40.154495] RBP: 0000000000000000 R08: 00000000018d0880 R09: 00000000004002e0 [ 40.161749] R10: 000000000000000f R11: 0000000000000213 R12: 0000000000009b58 [ 40.169022] R13: 0000000000402010 R14: 0000000000000000 R15: 0000000000000000 [ 40.176284] Modules linked in: [ 40.179665] ---[ end trace 368120e175bcf482 ]--- [ 40.184455] RIP: 0010:vivid_vid_cap_s_dv_timings+0x60e/0x11e0 [ 40.190401] Code: c6 84 c9 0f 95 c1 40 84 ce 0f 85 ce 0a 00 00 83 e0 07 38 c2 0f 9e c1 84 d2 0f 95 c0 84 c1 0f 85 b9 0a 00 00 48 8b 43 14 31 d2 <41> f7 f7 48 ba 00 00 00 00 00 fc ff df 4c 8d 7b 40 89 85 64 ff ff [ 40.209350] RSP: 0018:ffff8801ba28f630 EFLAGS: 00010246 [ 40.214709] RAX: 0000000000d59f80 RBX: ffff8801d8515100 RCX: 0000000000000001 [ 40.222007] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801d8515114 [ 40.229300] RBP: ffff8801ba28f6f0 R08: 0000000000000001 R09: ffffed00396ce024 [ 40.236583] R10: ffffed00396ce024 R11: ffff8801cb670123 R12: ffff8801cb670080 [ 40.243882] R13: 1ffff10037451ecd R14: 0000000000000000 R15: 0000000000000000 [ 40.251187] FS: 00000000018d0880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 40.259463] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.265794] CR2: 00000000006cf090 CR3: 00000001d5e74000 CR4: 00000000001406e0 [ 40.273101] Kernel panic - not syncing: Fatal exception [ 40.279487] Kernel Offset: disabled [ 40.283114] Rebooting in 86400 seconds..