[info] Using makefile-style concurrent boot in runlevel 2. [ 25.339161] audit: type=1800 audit(1541221142.532:21): pid=5517 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 '10.128.10.49' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 40.790744] kasan: CONFIG_KASAN_INLINE enabled [ 40.795510] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 40.802935] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 40.809167] CPU: 1 PID: 5674 Comm: syz-executor163 Not tainted 4.19.0-next-20181102+ #104 [ 40.817461] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.826901] RIP: 0010:vb2_vmalloc_put_userptr+0x73/0x250 [ 40.832390] Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 c2 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5e 08 48 8d 7b 09 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 72 01 00 00 [ 40.851314] RSP: 0018:ffff8801ba18f398 EFLAGS: 00010202 [ 40.856658] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff113ee10 [ 40.863913] RDX: 0000000000000001 RSI: ffffffff854f9f99 RDI: 0000000000000009 [ 40.871178] RBP: ffff8801ba18f3c8 R08: ffff8801d5f0c600 R09: ffffed003977ccba [ 40.878550] R10: ffff8801ba18f4c0 R11: ffff8801cbbe65d7 R12: ffffc90002551000 [ 40.885805] R13: 0000000000000000 R14: ffff8801d7bc2000 R15: ffff8801d7bc2000 [ 40.893061] FS: 0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 40.901429] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.907296] CR2: 000000000043e920 CR3: 000000000946a000 CR4: 00000000001406e0 [ 40.914567] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.921821] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.929067] Call Trace: [ 40.931642] __vb2_queue_free+0x4b1/0xa30 [ 40.935956] ? vb2_vmalloc_detach_dmabuf+0x80/0x80 [ 40.940885] ? __vb2_plane_dmabuf_put.isra.5+0x310/0x310 [ 40.946324] vb2_core_queue_release+0x62/0x80 [ 40.950861] _vb2_fop_release+0x1d2/0x2b0 [ 40.954999] vb2_fop_release+0x77/0xc0 [ 40.958974] vivid_fop_release+0x18e/0x440 [ 40.963251] ? vivid_remove+0x460/0x460 [ 40.967221] v4l2_release+0x224/0x3a0 [ 40.971012] __fput+0x3bc/0xa70 [ 40.974285] ? dev_debug_store+0x140/0x140 [ 40.978510] ? get_max_files+0x20/0x20 [ 40.982385] ? trace_hardirqs_on+0xbd/0x310 [ 40.986696] ? kasan_check_read+0x11/0x20 [ 40.990830] ? task_work_run+0x1af/0x2a0 [ 40.994873] ? trace_hardirqs_off_caller+0x300/0x300 [ 40.999960] ____fput+0x15/0x20 [ 41.003230] task_work_run+0x1e8/0x2a0 [ 41.007105] ? task_work_cancel+0x240/0x240 [ 41.011419] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 41.016947] ? switch_task_namespaces+0x9d/0xd0 [ 41.021674] do_exit+0x1ad1/0x26d0 [ 41.025276] ? mm_update_next_owner+0x990/0x990 [ 41.029942] ? kvfree+0x66/0x70 [ 41.033215] ? video_usercopy+0x79b/0x1750 [ 41.037439] ? v4l_s_fmt+0x990/0x990 [ 41.041256] ? v4l_enumstd+0x70/0x70 [ 41.044953] ? rcu_softirq_qs+0x20/0x20 [ 41.048911] ? is_bpf_text_address+0xd3/0x170 [ 41.053389] ? __kernel_text_address+0xd/0x40 [ 41.057879] ? unwind_get_return_address+0x61/0xa0 [ 41.062800] ? __save_stack_trace+0x8d/0xf0 [ 41.067111] ? save_stack+0x43/0xd0 [ 41.070725] ? __kasan_slab_free+0x102/0x150 [ 41.075121] ? kasan_slab_free+0xe/0x10 [ 41.079080] ? kmem_cache_free+0x83/0x290 [ 41.083214] ? do_sys_open+0x54d/0x700 [ 41.087112] ? __x64_sys_open+0x7e/0xc0 [ 41.091071] ? do_syscall_64+0x1b9/0x820 [ 41.095121] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.100468] ? trace_hardirqs_off+0xb8/0x310 [ 41.104862] ? kasan_check_read+0x11/0x20 [ 41.108996] ? do_raw_spin_unlock+0xa7/0x330 [ 41.113391] ? trace_hardirqs_on+0x310/0x310 [ 41.117796] ? video_usercopy+0x1750/0x1750 [ 41.122101] ? video_ioctl2+0x2c/0x33 [ 41.125886] ? v4l2_ioctl+0x15c/0x1b0 [ 41.129669] ? video_devdata+0xa0/0xa0 [ 41.133687] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.139308] ? do_vfs_ioctl+0x201/0x1790 [ 41.143372] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 41.148914] ? ioctl_preallocate+0x300/0x300 [ 41.153348] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.158874] ? __fget_light+0x2e9/0x430 [ 41.162855] ? fget_raw+0x20/0x20 [ 41.166290] ? rcu_read_lock_sched_held+0x14f/0x180 [ 41.171304] ? kmem_cache_free+0x24f/0x290 [ 41.175524] ? putname+0xf7/0x130 [ 41.178963] do_group_exit+0x177/0x440 [ 41.182855] ? trace_hardirqs_on+0xbd/0x310 [ 41.187231] ? __ia32_sys_exit+0x50/0x50 [ 41.191281] ? trace_hardirqs_off_caller+0x300/0x300 [ 41.196369] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.201887] ? ksys_ioctl+0x81/0xd0 [ 41.205498] __x64_sys_exit_group+0x3e/0x50 [ 41.209805] do_syscall_64+0x1b9/0x820 [ 41.213675] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 41.219028] ? syscall_return_slowpath+0x5e0/0x5e0 [ 41.223938] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.228761] ? trace_hardirqs_on_caller+0x310/0x310 [ 41.233758] ? prepare_exit_to_usermode+0x291/0x3b0 [ 41.238865] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.243696] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.248868] RIP: 0033:0x442da8 [ 41.252056] Code: Bad RIP value. [ 41.255406] RSP: 002b:00007ffc706a9758 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 41.263110] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000442da8 [ 41.270541] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 41.277802] RBP: 00000000004c2968 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 41.285054] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 41.292303] R13: 00000000006d4180 R14: 0000000000000000 R15: 0000000000000000 [ 41.299561] Modules linked in: [ 41.302865] ---[ end trace 521ce2ff0ac44fd4 ]--- [ 41.307942] RIP: 0010:vb2_vmalloc_put_userptr+0x73/0x250 [ 41.313442] Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 c2 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5e 08 48 8d 7b 09 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 72 01 00 00 [ 41.332428] RSP: 0018:ffff8801ba18f398 EFLAGS: 00010202 [ 41.337854] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff113ee10 [ 41.345236] RDX: 0000000000000001 RSI: ffffffff854f9f99 RDI: 0000000000000009 [ 41.352569] RBP: ffff8801ba18f3c8 R08: ffff8801d5f0c600 R09: ffffed003977ccba [ 41.359830] R10: ffff8801ba18f4c0 R11: ffff8801cbbe65d7 R12: ffffc90002551000 [ 41.367125] R13: 0000000000000000 R14: ffff8801d7bc2000 R15: ffff8801d7bc2000 [ 41.374435] FS: 0000000001a5c880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 41.382674] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.388537] CR2: 0000000000442d7e CR3: 000000000946a000 CR4: 00000000001406e0 [ 41.395817] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.403089] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.410386] Kernel panic - not syncing: Fatal exception [ 41.416664] Kernel Offset: disabled [ 41.420286] Rebooting in 86400 seconds..