[....] Starting enhanced syslogd: rsyslogd[ 12.323164] audit: type=1400 audit(1516795187.932:5): avc: denied { syslog } for pid=3499 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: [ 18.963802] audit: type=1400 audit(1516795194.572:6): avc: denied { map } for pid=3639 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 '10.128.0.27' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 25.241050] audit: type=1400 audit(1516795200.849:7): avc: denied { map } for pid=3653 comm="syzkaller109351" path="/root/syzkaller109351060" 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 [ 25.254657] capability: warning: `syzkaller109351' uses deprecated v2 capabilities in a way that may be insecure 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 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 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 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 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 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 [ 30.919971] WARNING: CPU: 1 PID: 3663 at drivers/vhost/vhost.c:646 vhost_dev_cleanup+0x1074/0x1690 [ 30.929146] Kernel panic - not syncing: panic_on_warn set ... [ 30.929146] [ 30.936517] CPU: 1 PID: 3663 Comm: syzkaller109351 Not tainted 4.15.0-rc9+ #277 [ 30.943934] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.953265] Call Trace: [ 30.955828] dump_stack+0x194/0x257 [ 30.959432] ? arch_local_irq_restore+0x53/0x53 [ 30.964080] ? vsnprintf+0x1ed/0x1900 [ 30.967856] panic+0x1e4/0x41c [ 30.971027] ? refcount_error_report+0x214/0x214 [ 30.975769] ? show_regs_print_info+0x18/0x18 [ 30.980247] ? __warn+0x1c1/0x200 [ 30.983679] ? vhost_dev_cleanup+0x1074/0x1690 [ 30.988236] __warn+0x1dc/0x200 [ 30.991490] ? vhost_dev_cleanup+0x1074/0x1690 [ 30.996049] report_bug+0x211/0x2d0 [ 30.999656] fixup_bug.part.11+0x37/0x80 [ 31.003694] do_error_trap+0x2d7/0x3e0 [ 31.007559] ? math_error+0x400/0x400 [ 31.011336] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.016327] ? trace_hardirqs_on+0xd/0x10 [ 31.020455] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.025276] do_invalid_op+0x1b/0x20 [ 31.028961] invalid_op+0x22/0x40 [ 31.032389] RIP: 0010:vhost_dev_cleanup+0x1074/0x1690 [ 31.037550] RSP: 0018:ffff8801bc51f8c8 EFLAGS: 00010293 [ 31.042886] RAX: ffff8801bc7da140 RBX: ffff88019f54f140 RCX: ffffffff84132694 [ 31.050128] RDX: 0000000000000000 RSI: 1ffff100378fb53b RDI: ffff88019f54f1e8 [ 31.057371] RBP: ffff8801bc51fa08 R08: 1ffff100378a3ebe R09: 0000000000000000 [ 31.064617] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff100378a3f24 [ 31.071859] R13: ffff88019f54f3d8 R14: ffff88019f54f200 R15: ffff88019f54f250 [ 31.079118] ? vhost_dev_cleanup+0x1074/0x1690 [ 31.083687] ? vhost_dev_cleanup+0x1074/0x1690 [ 31.088241] ? vhost_work_queue+0xc0/0xc0 [ 31.092367] ? vhost_dev_ioctl+0x1140/0x1140 [ 31.096750] ? wait_for_completion+0x770/0x770 [ 31.101314] ? rcu_read_lock_sched_held+0x108/0x120 [ 31.106302] ? kmem_cache_alloc_node_trace+0x370/0x750 [ 31.111559] vhost_dev_reset_owner+0x80/0x280 [ 31.116031] ? vhost_net_flush+0x209/0x2a0 [ 31.120239] ? vhost_dev_cleanup+0x1690/0x1690 [ 31.124798] ? mutex_unlock+0xd/0x10 [ 31.128488] ? vhost_net_stop_vq+0xc3/0xf0 [ 31.132704] vhost_net_ioctl+0xa85/0x1910 [ 31.136829] ? avc_has_extended_perms+0x7fa/0x12c0 [ 31.141738] ? find_held_lock+0x35/0x1d0 [ 31.145779] ? vhost_net_stop_vq+0xf0/0xf0 [ 31.149993] ? avc_ss_reset+0x110/0x110 [ 31.153944] ? lock_downgrade+0x980/0x980 [ 31.158069] ? lock_release+0xa40/0xa40 [ 31.162027] ? __lock_is_held+0xb6/0x140 [ 31.166092] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 31.171952] ? rcu_note_context_switch+0x710/0x710 [ 31.176862] ? vhost_net_stop_vq+0xf0/0xf0 [ 31.181071] do_vfs_ioctl+0x1b1/0x1520 [ 31.184930] ? _cond_resched+0x14/0x30 [ 31.188798] ? ioctl_preallocate+0x2b0/0x2b0 [ 31.193186] ? selinux_capable+0x40/0x40 [ 31.197227] ? SyS_futex+0x269/0x390 [ 31.200913] ? __fd_install+0x6cb/0x740 [ 31.204875] ? security_file_ioctl+0x89/0xb0 [ 31.209262] SyS_ioctl+0x8f/0xc0 [ 31.212607] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 31.217333] RIP: 0033:0x449849 [ 31.220498] RSP: 002b:00007fbfb6bc9da8 EFLAGS: 00000297 ORIG_RAX: 0000000000000010 [ 31.228178] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000449849 [ 31.235419] RDX: 0000000000000000 RSI: 000000000000af02 RDI: 0000000000000256 [ 31.242661] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 31.249903] R10: 0000000000000000 R11: 0000000000000297 R12: 00000000006dac20 [ 31.257149] R13: 6f68762f7665642f R14: 64696d2f7665642f R15: 000000000000000b [ 31.265028] Dumping ftrace buffer: [ 31.268607] (ftrace buffer empty) [ 31.272284] Kernel Offset: disabled [ 31.275884] Rebooting in 86400 seconds..