[info] Using makefile-style concurrent boot in runlevel 2. [ 26.182596] audit: type=1800 audit(1540968032.550:21): pid=5540 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.108' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 68.702279] divide error: 0000 [#1] PREEMPT SMP KASAN [ 68.707739] CPU: 1 PID: 5698 Comm: syz-executor655 Not tainted 4.19.0+ #215 [ 68.714827] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.724174] RIP: 0010:vivid_vid_cap_s_dv_timings+0x60e/0x11e0 [ 68.730057] 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 [ 68.748941] RSP: 0018:ffff8801d70af670 EFLAGS: 00010246 [ 68.754287] RAX: 0000000000d59f80 RBX: ffff8801d764d400 RCX: 0000000000000001 [ 68.761537] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801d764d414 [ 68.768787] RBP: ffff8801d70af730 R08: 0000000000000001 R09: ffffed003973a024 [ 68.776347] R10: ffffed003973a024 R11: ffff8801cb9d0123 R12: ffff8801cb9d0080 [ 68.783609] R13: 1ffff1003ae15ed5 R14: 0000000000000000 R15: 0000000000000000 [ 68.790861] FS: 0000000000000000(0000) GS:ffff8801daf00000(0063) knlGS:0000000009b0b840 [ 68.799073] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 68.804940] CR2: 00000000080c23dc CR3: 00000001d79eb000 CR4: 00000000001406e0 [ 68.812264] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.819522] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.826777] Call Trace: [ 68.829357] ? v4l2_prio_open+0x140/0x140 [ 68.833488] ? vivid_vid_cap_s_std+0x230/0x230 [ 68.838057] vidioc_s_dv_timings+0xa4/0xc0 [ 68.842276] ? lock_downgrade+0x900/0x900 [ 68.846403] v4l_stub_s_dv_timings+0x4f/0x60 [ 68.850794] __video_do_ioctl+0x519/0xf00 [ 68.854929] ? usercopy_warn+0x110/0x110 [ 68.858975] ? v4l_s_fmt+0x990/0x990 [ 68.862673] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 68.868279] video_usercopy+0x5c1/0x1760 [ 68.872332] ? v4l_s_fmt+0x990/0x990 [ 68.876081] ? v4l_enumstd+0x70/0x70 [ 68.879785] ? __kernel_text_address+0xd/0x40 [ 68.884320] ? unwind_get_return_address+0x61/0xa0 [ 68.889243] ? __save_stack_trace+0x8d/0xf0 [ 68.893603] ? save_stack+0xa9/0xd0 [ 68.897222] ? save_stack+0x43/0xd0 [ 68.900833] ? __kasan_slab_free+0x102/0x150 [ 68.905224] ? kasan_slab_free+0xe/0x10 [ 68.909178] ? kmem_cache_free+0x83/0x290 [ 68.913309] ? putname+0xf2/0x130 [ 68.916747] ? do_sys_open+0x54d/0x700 [ 68.920700] ? __ia32_compat_sys_open+0x79/0xb0 [ 68.925372] ? do_fast_syscall_32+0x34d/0xfb2 [ 68.929849] ? entry_SYSENTER_compat+0x70/0x7f [ 68.934415] ? trace_hardirqs_off+0xb8/0x310 [ 68.938871] ? kasan_check_read+0x11/0x20 [ 68.943010] ? do_raw_spin_unlock+0xa7/0x330 [ 68.947399] ? trace_hardirqs_on+0x310/0x310 [ 68.951789] ? trace_hardirqs_off+0xb8/0x310 [ 68.956181] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.961707] ? check_preemption_disabled+0x48/0x280 [ 68.966727] ? video_usercopy+0x1760/0x1760 [ 68.971038] video_ioctl2+0x2c/0x33 [ 68.974647] v4l2_ioctl+0x154/0x1b0 [ 68.978376] ? video_devdata+0xa0/0xa0 [ 68.982250] v4l2_compat_ioctl32+0x5ff/0x5dc0 [ 68.986794] ? fget_raw+0x20/0x20 [ 68.990236] ? putname+0xf2/0x130 [ 68.993672] ? rcu_read_lock_sched_held+0x14f/0x180 [ 68.998671] ? get_v4l2_buffer32+0xe60/0xe60 [ 69.003059] ? putname+0xf7/0x130 [ 69.006493] ? do_fast_syscall_32+0x150/0xfb2 [ 69.010970] ? get_v4l2_buffer32+0xe60/0xe60 [ 69.015359] __ia32_compat_sys_ioctl+0x20e/0x630 [ 69.020097] do_fast_syscall_32+0x34d/0xfb2 [ 69.024400] ? do_int80_syscall_32+0x890/0x890 [ 69.028966] ? entry_SYSENTER_compat+0x68/0x7f [ 69.033529] ? trace_hardirqs_off_caller+0xbb/0x310 [ 69.038536] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 69.043357] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 69.048179] ? trace_hardirqs_on_caller+0x310/0x310 [ 69.053180] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 69.058179] ? prepare_exit_to_usermode+0x291/0x3b0 [ 69.063177] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 69.068001] entry_SYSENTER_compat+0x70/0x7f [ 69.072388] RIP: 0023:0xf7fc3a29 [ 69.075742] Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 69.094623] RSP: 002b:00000000ffdaa92c EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 69.102308] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000c0845657 [ 69.109558] RDX: 0000000020000000 RSI: 00000000ffdaaa74 RDI: 00000000ffdaaa7c [ 69.116986] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 69.124244] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 69.131498] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 69.138754] Modules linked in: [ 69.142301] ---[ end trace be394754b796f1d0 ]--- [ 69.147175] RIP: 0010:vivid_vid_cap_s_dv_timings+0x60e/0x11e0 [ 69.153183] 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 [ 69.172266] RSP: 0018:ffff8801d70af670 EFLAGS: 00010246 [ 69.177646] RAX: 0000000000d59f80 RBX: ffff8801d764d400 RCX: 0000000000000001 [ 69.184915] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801d764d414 [ 69.192175] RBP: ffff8801d70af730 R08: 0000000000000001 R09: ffffed003973a024 [ 69.199476] R10: ffffed003973a024 R11: ffff8801cb9d0123 R12: ffff8801cb9d0080 [ 69.206758] R13: 1ffff1003ae15ed5 R14: 0000000000000000 R15: 0000000000000000 [ 69.214044] FS: 0000000000000000(0000) GS:ffff8801dae00000(0063) knlGS:0000000009b0b840 [ 69.222252] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 69.228144] CR2: 0000000001e68000 CR3: 00000001d79eb000 CR4: 00000000001406f0 [ 69.235425] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 69.242681] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 69.249965] Kernel panic - not syncing: Fatal exception [ 69.256331] Kernel Offset: disabled [ 69.259955] Rebooting in 86400 seconds..