[ 27.438827] audit: type=1800 audit(1540972643.099:27): pid=5573 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 27.468562] audit: type=1800 audit(1540972643.099:28): pid=5573 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. [ 28.139124] audit: type=1800 audit(1540972643.869:29): pid=5573 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 [ 28.159025] audit: type=1800 audit(1540972643.869:30): pid=5573 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 Warning: Permanently added '10.128.0.72' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 60.552868] divide error: 0000 [#1] PREEMPT SMP KASAN [ 60.558178] CPU: 1 PID: 5731 Comm: syz-executor967 Not tainted 4.19.0+ #312 [ 60.565261] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.574625] RIP: 0010:vivid_vid_cap_s_dv_timings+0x60e/0x11e0 [ 60.580495] 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 [ 60.599382] RSP: 0018:ffff8801d3a6f630 EFLAGS: 00010246 [ 60.604729] RAX: 0000000000d59f80 RBX: ffff8801d798a800 RCX: 0000000000000001 [ 60.611981] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801d798a814 [ 60.619231] RBP: ffff8801d3a6f6f0 R08: 0000000000000001 R09: ffffed00397f8024 [ 60.626503] R10: ffffed00397f8024 R11: ffff8801cbfc0123 R12: ffff8801cbfc0080 [ 60.633756] R13: 1ffff1003a74decd R14: 0000000000000000 R15: 0000000000000000 [ 60.641008] FS: 000000000078b880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 60.649230] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.655091] CR2: 00000000006cf090 CR3: 00000001d4a9d000 CR4: 00000000001406e0 [ 60.662344] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.669597] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.676847] Call Trace: [ 60.679422] ? v4l2_prio_open+0x140/0x140 [ 60.683556] ? vivid_vid_cap_s_std+0x230/0x230 [ 60.688125] vidioc_s_dv_timings+0xa4/0xc0 [ 60.692374] ? lock_downgrade+0x900/0x900 [ 60.696522] v4l_stub_s_dv_timings+0x4f/0x60 [ 60.700918] __video_do_ioctl+0x519/0xf00 [ 60.705061] ? usercopy_warn+0x110/0x110 [ 60.709121] ? v4l_s_fmt+0x990/0x990 [ 60.712831] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 60.718366] video_usercopy+0x5c1/0x1760 [ 60.722413] ? v4l_s_fmt+0x990/0x990 [ 60.726113] ? v4l_enumstd+0x70/0x70 [ 60.729835] ? __handle_mm_fault+0xa57/0x5be0 [ 60.734320] ? vmf_insert_mixed_mkwrite+0x40/0x40 [ 60.739153] ? zap_class+0x640/0x640 [ 60.742848] ? zap_class+0x640/0x640 [ 60.746547] ? zap_class+0x640/0x640 [ 60.750258] ? find_held_lock+0x36/0x1c0 [ 60.754339] ? video_usercopy+0x1760/0x1760 [ 60.758643] video_ioctl2+0x2c/0x33 [ 60.762256] v4l2_ioctl+0x154/0x1b0 [ 60.765873] ? video_devdata+0xa0/0xa0 [ 60.769742] do_vfs_ioctl+0x1de/0x1720 [ 60.773629] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 60.778900] ? rcu_softirq_qs+0x20/0x20 [ 60.782862] ? ioctl_preallocate+0x300/0x300 [ 60.787256] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 60.792780] ? __fget_light+0x2e9/0x430 [ 60.796738] ? fget_raw+0x20/0x20 [ 60.800179] ? kasan_check_write+0x14/0x20 [ 60.804399] ? up_read+0x225/0x2c0 [ 60.807938] ? up_read_non_owner+0x100/0x100 [ 60.812332] ? do_syscall_64+0x9a/0x820 [ 60.816304] ? do_syscall_64+0x9a/0x820 [ 60.820277] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 60.824858] ? security_file_ioctl+0x94/0xc0 [ 60.829248] ksys_ioctl+0xa9/0xd0 [ 60.832692] __x64_sys_ioctl+0x73/0xb0 [ 60.836582] do_syscall_64+0x1b9/0x820 [ 60.840457] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 60.845800] ? syscall_return_slowpath+0x5e0/0x5e0 [ 60.850724] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 60.855551] ? trace_hardirqs_on_caller+0x310/0x310 [ 60.860570] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 60.865584] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 60.871104] ? prepare_exit_to_usermode+0x291/0x3b0 [ 60.876101] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 60.880931] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 60.886101] RIP: 0033:0x444c19 [ 60.889284] 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 [ 60.908177] RSP: 002b:00007ffdc4892588 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 60.915867] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000444c19 [ 60.923118] RDX: 0000000020000000 RSI: 00000000c0845657 RDI: 0000000000000003 [ 60.930383] RBP: 0000000000000000 R08: 000000000078b880 R09: 00000000004002e0 [ 60.937636] R10: 000000000000000f R11: 0000000000000213 R12: 000000000000ec6f [ 60.944887] R13: 0000000000402010 R14: 0000000000000000 R15: 0000000000000000 [ 60.952141] Modules linked in: [ 60.955885] ---[ end trace 423cbeb20573dd38 ]--- [ 60.960672] RIP: 0010:vivid_vid_cap_s_dv_timings+0x60e/0x11e0 [ 60.966635] 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 [ 60.985870] RSP: 0018:ffff8801d3a6f630 EFLAGS: 00010246 [ 60.991222] RAX: 0000000000d59f80 RBX: ffff8801d798a800 RCX: 0000000000000001 [ 60.998582] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801d798a814 [ 61.006080] RBP: ffff8801d3a6f6f0 R08: 0000000000000001 R09: ffffed00397f8024 [ 61.013343] R10: ffffed00397f8024 R11: ffff8801cbfc0123 R12: ffff8801cbfc0080 [ 61.020648] R13: 1ffff1003a74decd R14: 0000000000000000 R15: 0000000000000000 [ 61.027950] FS: 000000000078b880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 61.036195] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.042074] CR2: 00000000006cf090 CR3: 00000001d4a9d000 CR4: 00000000001406e0 [ 61.049388] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.056681] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.063937] Kernel panic - not syncing: Fatal exception [ 61.070173] Kernel Offset: disabled [ 61.073795] Rebooting in 86400 seconds..