[....] Starting enhanced syslogd: rsyslogd[ 10.189864] audit: type=1400 audit(1514413836.527:5): avc: denied { syslog } for pid=2996 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 periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. 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. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 15.512745] audit: type=1400 audit(1514413841.850:6): avc: denied { map } for pid=3135 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 '10.128.15.220' (ECDSA) to the list of known hosts. executing program executing program executing program [ 42.295245] audit: type=1400 audit(1514413868.632:7): avc: denied { map } for pid=3153 comm="syzkaller815535" path="/root/syzkaller815535992" 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 [ 42.347618] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing 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executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 52.951180] WARNING: CPU: 0 PID: 3203 at arch/x86/kvm/x86.c:7375 kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 [ 52.960613] Kernel panic - not syncing: panic_on_warn set ... [ 52.960613] [ 52.967970] CPU: 0 PID: 3203 Comm: syzkaller815535 Not tainted 4.15.0-rc4-next-20171221+ #78 [ 52.976538] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.985887] Call Trace: [ 52.988469] dump_stack+0x194/0x257 [ 52.992094] ? arch_local_irq_restore+0x53/0x53 [ 52.996761] ? vsnprintf+0x1ed/0x1900 [ 53.000559] panic+0x1e4/0x41c [ 53.003740] ? refcount_error_report+0x214/0x214 [ 53.008485] ? show_regs_print_info+0x18/0x18 [ 53.013003] ? __warn+0x1c1/0x200 [ 53.016452] ? kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 [ 53.021449] __warn+0x1dc/0x200 [ 53.024702] ? kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 [ 53.029695] report_bug+0x211/0x2d0 [ 53.033302] fixup_bug.part.11+0x37/0x80 [ 53.037351] do_error_trap+0x2d7/0x3e0 [ 53.041210] ? trace_hardirqs_on+0xd/0x10 [ 53.046027] ? math_error+0x400/0x400 [ 53.049813] ? __lock_is_held+0xb6/0x140 [ 53.053853] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 53.058671] do_invalid_op+0x1b/0x20 [ 53.062356] invalid_op+0x22/0x40 [ 53.065778] RIP: 0010:kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 [ 53.071373] RSP: 0018:ffff8801c7fa76b0 EFLAGS: 00010293 [ 53.076705] RAX: ffff8801c6590480 RBX: ffff88016c604000 RCX: ffffffff810df6b7 [ 53.083951] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff880172191a20 [ 53.091191] RBP: ffff8801c7fa7a40 R08: 1ffff1002e432ddb R09: 0000000000000001 [ 53.099651] R10: ffff8801c7fa7690 R11: 0000000000000000 R12: 0000000000000000 [ 53.106891] R13: ffff8801d2a86980 R14: ffff880172191800 R15: ffff880172191800 [ 53.114157] ? kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 [ 53.119159] ? mark_held_locks+0xaf/0x100 [ 53.123287] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 53.128362] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 53.133347] ? trace_hardirqs_on+0xd/0x10 [ 53.137469] ? free_object+0x150/0x230 [ 53.141326] ? kvm_arch_vcpu_runnable+0x560/0x560 [ 53.146136] ? debug_stats_show+0xd0/0xd0 [ 53.150258] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 53.155338] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 53.160336] ? debug_object_free+0x2f1/0x5a0 [ 53.164712] ? lockdep_init_map+0x9/0x10 [ 53.168745] ? debug_object_destroy+0x2b0/0x2b0 [ 53.173393] ? __wait_rcu_gp+0x230/0x340 [ 53.177436] ? synchronize_sched.part.65+0xac/0x100 [ 53.183055] ? synchronize_sched_expedited+0xf0/0xf0 [ 53.188127] ? call_rcu_bh+0x20/0x20 [ 53.191815] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 53.197671] ? put_pid+0x183/0x1f0 [ 53.201195] ? task_active_pid_ns+0xd0/0xd0 [ 53.205489] ? __might_sleep+0x95/0x190 [ 53.209441] kvm_vcpu_ioctl+0x6f1/0xff0 [ 53.213384] ? kvm_vcpu_ioctl+0x6f1/0xff0 [ 53.217511] ? kvm_vcpu_fault+0x520/0x520 [ 53.221639] ? find_held_lock+0x35/0x1d0 [ 53.225679] ? __fget+0x333/0x570 [ 53.229109] ? lock_downgrade+0x980/0x980 [ 53.233234] ? lock_release+0xa40/0xa40 [ 53.237182] ? __lock_is_held+0xb6/0x140 [ 53.241225] ? __fget+0x35c/0x570 [ 53.244661] ? iterate_fd+0x3f0/0x3f0 [ 53.248432] ? get_unused_fd_flags+0x190/0x190 [ 53.252994] ? kvm_vcpu_fault+0x520/0x520 [ 53.257112] do_vfs_ioctl+0x1b1/0x1520 [ 53.260970] ? _cond_resched+0x14/0x30 [ 53.264832] ? ioctl_preallocate+0x2b0/0x2b0 [ 53.269216] ? selinux_capable+0x40/0x40 [ 53.273253] ? SyS_futex+0x269/0x390 [ 53.276949] ? security_file_ioctl+0x89/0xb0 [ 53.281330] SyS_ioctl+0x8f/0xc0 [ 53.284672] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 53.289402] RIP: 0033:0x446ec9 [ 53.292566] RSP: 002b:00007f45612f2cb8 EFLAGS: 00000293 ORIG_RAX: 0000000000000010 [ 53.300248] RAX: ffffffffffffffda RBX: 00000000006dcc6c RCX: 0000000000446ec9 [ 53.309473] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000290 [ 53.316710] RBP: 00000000006dcc68 R08: 0000000000000000 R09: 0000000000000000 [ 53.323951] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 53.331365] R13: 00007fff1af89c9f R14: 00007f45612f39c0 R15: 000000000000000c [ 53.339595] Dumping ftrace buffer: [ 53.343176] (ftrace buffer empty) [ 53.346855] Kernel Offset: disabled [ 53.350450] Rebooting in 86400 seconds..