Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 30.402249] kauditd_printk_skb: 9 callbacks suppressed [ 30.402263] audit: type=1800 audit(1540940481.688:33): pid=5617 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 30.429337] audit: type=1800 audit(1540940481.688:34): pid=5617 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 55.361193] audit: type=1400 audit(1540940506.648:35): avc: denied { map } for pid=5798 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.65' (ECDSA) to the list of known hosts. executing program [ 61.908906] audit: type=1400 audit(1540940513.198:36): avc: denied { map } for pid=5810 comm="syz-executor474" path="/root/syz-executor474995421" dev="sda1" ino=2339 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 61.934628] kasan: CONFIG_KASAN_INLINE enabled [ 61.939701] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 61.947165] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 61.953538] CPU: 0 PID: 5810 Comm: syz-executor474 Not tainted 4.19.0+ #90 [ 61.960538] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.969898] RIP: 0010:vb2_vmalloc_put_userptr+0x73/0x250 [ 61.975341] 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 [ 61.994238] RSP: 0018:ffff8801b841f3b8 EFLAGS: 00010202 [ 61.999586] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff113e0ac [ 62.006839] RDX: 0000000000000001 RSI: ffffffff854c11d9 RDI: 0000000000000009 [ 62.014119] RBP: ffff8801b841f3e8 R08: ffff8801c176e200 R09: ffffed003962eb8b [ 62.021478] R10: ffff8801b841f4e0 R11: ffff8801cb175c5f R12: ffffc900025d5000 [ 62.028732] R13: 0000000000000000 R14: ffff8801c04c7d00 R15: ffff8801c04c7d00 [ 62.036091] FS: 0000000000000000(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 62.044302] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.050174] CR2: 000000000043e920 CR3: 000000000946a000 CR4: 00000000001406f0 [ 62.057498] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.064819] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.072077] Call Trace: [ 62.074665] __vb2_queue_free+0x4b1/0xa30 [ 62.078810] ? vb2_vmalloc_detach_dmabuf+0x80/0x80 [ 62.083721] ? __vb2_plane_dmabuf_put.isra.6+0x310/0x310 [ 62.089159] vb2_core_queue_release+0x62/0x80 [ 62.093646] _vb2_fop_release+0x1d2/0x2b0 [ 62.097780] vb2_fop_release+0x77/0xc0 [ 62.101656] vivid_fop_release+0x18e/0x440 [ 62.105872] ? vivid_remove+0x460/0x460 [ 62.109829] ? dev_debug_store+0x140/0x140 [ 62.114156] v4l2_release+0xfb/0x1a0 [ 62.117861] __fput+0x385/0xa30 [ 62.121124] ? get_max_files+0x20/0x20 [ 62.125003] ? trace_hardirqs_on+0xbd/0x310 [ 62.129313] ? kasan_check_read+0x11/0x20 [ 62.133445] ? task_work_run+0x1af/0x2a0 [ 62.137498] ? trace_hardirqs_off_caller+0x310/0x310 [ 62.142598] ____fput+0x15/0x20 [ 62.145871] task_work_run+0x1e8/0x2a0 [ 62.149747] ? task_work_cancel+0x240/0x240 [ 62.154063] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 62.159593] ? switch_task_namespaces+0x9d/0xd0 [ 62.164250] do_exit+0x1ad6/0x26d0 [ 62.167831] ? mm_update_next_owner+0x990/0x990 [ 62.172602] ? kvfree+0x66/0x70 [ 62.175876] ? video_usercopy+0x79b/0x1760 [ 62.180146] ? v4l_s_fmt+0x990/0x990 [ 62.183854] ? v4l_enumstd+0x70/0x70 [ 62.187553] ? rcu_softirq_qs+0x20/0x20 [ 62.191521] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 62.197049] ? avc_has_extended_perms+0xab2/0x15a0 [ 62.201965] ? avc_ss_reset+0x190/0x190 [ 62.205929] ? save_stack+0x43/0xd0 [ 62.209546] ? __kasan_slab_free+0x102/0x150 [ 62.213940] ? kasan_slab_free+0xe/0x10 [ 62.217901] ? kmem_cache_free+0x83/0x290 [ 62.222038] ? do_sys_open+0x54d/0x700 [ 62.225916] ? __x64_sys_open+0x7e/0xc0 [ 62.229878] ? do_syscall_64+0x1b9/0x820 [ 62.233925] ? kasan_check_read+0x11/0x20 [ 62.238062] ? perf_trace_sched_process_exec+0x860/0x860 [ 62.243496] ? video_usercopy+0x1760/0x1760 [ 62.247798] ? video_ioctl2+0x2c/0x33 [ 62.251591] ? v4l2_ioctl+0x15c/0x1b0 [ 62.255378] ? video_devdata+0xa0/0xa0 [ 62.259252] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 62.264778] ? do_vfs_ioctl+0x201/0x1720 [ 62.268826] ? ioctl_preallocate+0x300/0x300 [ 62.273231] ? selinux_file_mprotect+0x620/0x620 [ 62.277981] ? rcu_read_lock_sched_held+0x14f/0x180 [ 62.282991] ? kmem_cache_free+0x24b/0x290 [ 62.287212] ? putname+0xf7/0x130 [ 62.290662] do_group_exit+0x177/0x440 [ 62.294540] ? trace_hardirqs_on+0xbd/0x310 [ 62.298845] ? __ia32_sys_exit+0x50/0x50 [ 62.302898] ? trace_hardirqs_off_caller+0x310/0x310 [ 62.307994] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 62.313516] ? ksys_ioctl+0x81/0xd0 [ 62.317134] __x64_sys_exit_group+0x3e/0x50 [ 62.321444] do_syscall_64+0x1b9/0x820 [ 62.325318] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 62.330667] ? syscall_return_slowpath+0x5e0/0x5e0 [ 62.335576] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 62.340467] ? trace_hardirqs_on_caller+0x310/0x310 [ 62.345473] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 62.350475] ? prepare_exit_to_usermode+0x291/0x3b0 [ 62.355477] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 62.360428] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 62.365607] RIP: 0033:0x442da8 [ 62.368795] Code: Bad RIP value. [ 62.372221] RSP: 002b:00007ffcbb36cfa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 62.380043] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000442da8 [ 62.387298] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 62.394614] RBP: 00000000004c2968 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 62.401886] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 62.409144] R13: 00000000006d4180 R14: 0000000000000000 R15: 0000000000000000 [ 62.416404] Modules linked in: [ 62.420148] ---[ end trace 7c4b3df1d24caaf9 ]--- [ 62.425206] RIP: 0010:vb2_vmalloc_put_userptr+0x73/0x250 [ 62.430657] 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 [ 62.449765] RSP: 0018:ffff8801b841f3b8 EFLAGS: 00010202 [ 62.455198] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff113e0ac [ 62.462613] RDX: 0000000000000001 RSI: ffffffff854c11d9 RDI: 0000000000000009 [ 62.469949] RBP: ffff8801b841f3e8 R08: ffff8801c176e200 R09: ffffed003962eb8b [ 62.477243] R10: ffff8801b841f4e0 R11: ffff8801cb175c5f R12: ffffc900025d5000 [ 62.484577] R13: 0000000000000000 R14: ffff8801c04c7d00 R15: ffff8801c04c7d00 [ 62.491844] FS: 0000000000c93880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 62.500092] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.506108] CR2: 0000000000442d7e CR3: 000000000946a000 CR4: 00000000001406f0 [ 62.513381] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.520760] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.528074] Kernel panic - not syncing: Fatal exception [ 62.534316] Kernel Offset: disabled [ 62.537936] Rebooting in 86400 seconds..