[....] Starting enhanced syslogd: rsyslogd[ 15.013893] audit: type=1400 audit(1521894496.063:5): avc: denied { syslog } for pid=3885 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.224392] audit: type=1400 audit(1521894499.274:6): avc: denied { map } for pid=4025 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 '10.128.0.25' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program [ 24.621972] audit: type=1400 audit(1521894505.671:7): avc: denied { map } for pid=4039 comm="syzkaller762396" path="/root/syzkaller762396262" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.883424] list_del corruption, 0000000054a89bb5->next is LIST_POISON1 (00000000a63e4a19) [ 27.892064] ------------[ cut here ]------------ [ 27.897412] kernel BUG at lib/list_debug.c:47! [ 27.901994] invalid opcode: 0000 [#1] SMP KASAN [ 27.906658] Dumping ftrace buffer: [ 27.910201] (ftrace buffer empty) [ 27.913902] Modules linked in: [ 27.917092] CPU: 0 PID: 4851 Comm: syzkaller762396 Not tainted 4.16.0-rc6+ #364 [ 27.924525] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.933884] RIP: 0010:__list_del_entry_valid+0xd3/0x150 [ 27.939232] RSP: 0018:ffff8801d3ff71b8 EFLAGS: 00010086 [ 27.944592] RAX: 000000000000004e RBX: dead000000000200 RCX: 0000000000000000 [ 27.951852] RDX: 000000000000004e RSI: 1ffff1003a7fedec RDI: ffffed003a7fee2b [ 27.959111] RBP: ffff8801d3ff71d0 R08: ffff8801db227fc0 R09: 1ffff1003a7fed93 [ 27.966369] R10: ffff8801d3ff7090 R11: 0000000000000002 R12: dead000000000100 [ 27.973633] R13: ffff8801b6a2d458 R14: ffff8801b6a2d460 R15: ffff8801d27d1780 [ 27.980983] FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 27.989202] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.995078] CR2: 000000002001d000 CR3: 0000000006e22002 CR4: 00000000001606f0 [ 28.002339] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.009602] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.016862] Call Trace: [ 28.019441] ? remove_wait_queue+0x81/0x350 [ 28.023761] remove_wait_queue+0x90/0x350 [ 28.027920] ? add_wait_queue+0x290/0x290 [ 28.032063] ? fcntl_setlk+0x1100/0x1100 [ 28.036121] ? fsnotify+0x7b3/0x1140 [ 28.039864] vhost_poll_stop+0x46/0x90 [ 28.043753] vhost_net_stop_vq+0x90/0x120 [ 28.047898] ? vhost_net_open+0x6e0/0x6e0 [ 28.052044] vhost_net_release+0x49/0x190 [ 28.056206] __fput+0x327/0x7e0 [ 28.059496] ? fput+0x140/0x140 [ 28.062783] ? _raw_spin_unlock_irq+0x27/0x70 [ 28.067295] ____fput+0x15/0x20 [ 28.070576] task_work_run+0x199/0x270 [ 28.074469] ? task_work_cancel+0x210/0x210 [ 28.078792] ? _raw_spin_unlock+0x22/0x30 [ 28.082939] ? switch_task_namespaces+0x87/0xc0 [ 28.087617] do_exit+0x9bb/0x1ad0 [ 28.091088] ? mm_update_next_owner+0x930/0x930 [ 28.095759] ? perf_trace_run_bpf_submit+0x206/0x330 [ 28.100856] ? perf_trace_run_bpf_submit+0x206/0x330 [ 28.105957] ? perf_trace_run_bpf_submit+0x20d/0x330 [ 28.111070] ? perf_tp_event+0xae0/0xae0 [ 28.115136] ? perf_trace_lock+0x4d6/0x900 [ 28.119378] ? memset+0x31/0x40 [ 28.122669] ? perf_trace_lock+0x4d6/0x900 [ 28.126906] ? trace_event_raw_event_lock+0x340/0x340 [ 28.132115] ? trace_event_raw_event_lock+0x340/0x340 [ 28.137297] ? find_held_lock+0x35/0x1d0 [ 28.141375] ? kprobe_flush_task+0x1a3/0x5d0 [ 28.145779] ? trace_hardirqs_off+0x10/0x10 [ 28.150096] ? lock_downgrade+0x980/0x980 [ 28.154251] ? lock_release+0xa40/0xa40 [ 28.158227] ? memset+0x31/0x40 [ 28.161507] ? find_held_lock+0x35/0x1d0 [ 28.165587] ? get_signal+0x7a9/0x16d0 [ 28.169474] ? lock_downgrade+0x980/0x980 [ 28.173642] do_group_exit+0x149/0x400 [ 28.177526] ? do_raw_spin_trylock+0x190/0x190 [ 28.182105] ? SyS_exit+0x30/0x30 [ 28.185553] ? _raw_spin_unlock_irq+0x27/0x70 [ 28.190052] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 28.195079] get_signal+0x73a/0x16d0 [ 28.198824] ? ptrace_notify+0x130/0x130 [ 28.202896] ? __schedule+0x903/0x1ec0 [ 28.206808] ? __sched_text_start+0x8/0x8 [ 28.210982] do_signal+0x90/0x1e90 [ 28.214545] ? setup_sigcontext+0x7d0/0x7d0 [ 28.218885] ? schedule+0xf5/0x430 [ 28.222422] ? do_vfs_ioctl+0x486/0x1520 [ 28.226485] ? __schedule+0x1ec0/0x1ec0 [ 28.230499] ? exit_to_usermode_loop+0x8c/0x2f0 [ 28.235182] exit_to_usermode_loop+0x258/0x2f0 [ 28.239772] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 28.245313] ? fput+0xd2/0x140 [ 28.248506] ? SyS_ioctl+0x66/0xc0 [ 28.252054] do_syscall_64+0x6ec/0x940 [ 28.255930] ? __do_page_fault+0xc90/0xc90 [ 28.260155] ? _raw_spin_unlock_irq+0x27/0x70 [ 28.264648] ? finish_task_switch+0x1c1/0x7e0 [ 28.269143] ? syscall_return_slowpath+0x550/0x550 [ 28.274073] ? syscall_return_slowpath+0x2ac/0x550 [ 28.279003] ? prepare_exit_to_usermode+0x350/0x350 [ 28.284020] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 28.289394] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.294245] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 28.299420] RIP: 0033:0x44a8e9 [ 28.302603] RSP: 002b:00007f7ec8480da8 EFLAGS: 00000293 ORIG_RAX: 0000000000000010 [ 28.310303] RAX: 0000000000000000 RBX: 00000000006e29e4 RCX: 000000000044a8e9 [ 28.317562] RDX: 0000000020000340 RSI: 00000000400454ca RDI: 0000000000000005 [ 28.324820] RBP: 00000000006e29e0 R08: 0000000000000000 R09: 0000000000000000 [ 28.332084] R10: 0000000000000000 R11: 0000000000000293 R12: 6f68762f7665642f [ 28.339344] R13: 6475612f7665642f R14: 74656e2f7665642f R15: 0000000000000001 [ 28.346648] Code: 8f 00 00 00 49 8b 54 24 08 48 39 f2 75 3b 48 83 c4 08 b8 01 00 00 00 5b 41 5c 5d c3 4c 89 e2 48 c7 c7 00 80 40 86 e8 85 df fb fe <0f> 0b 48 c7 c7 60 80 40 86 e8 77 df fb fe 0f 0b 48 c7 c7 c0 80 [ 28.366030] RIP: __list_del_entry_valid+0xd3/0x150 RSP: ffff8801d3ff71b8 [ 28.372866] ---[ end trace bdcbea47fcda73ff ]--- [ 28.377611] Kernel panic - not syncing: Fatal exception [ 28.383414] Dumping ftrace buffer: [ 28.386931] (ftrace buffer empty) [ 28.390612] Kernel Offset: disabled [ 28.394213] Rebooting in 86400 seconds..