[....] Starting enhanced syslogd: rsyslogd[ 12.603754] audit: type=1400 audit(1513403579.281:5): avc: denied { syslog } for pid=2994 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: [ 19.756467] audit: type=1400 audit(1513403586.434:6): avc: denied { map } for pid=3134 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 'ci-upstream-mmots-kasan-gce-0,10.128.0.28' (ECDSA) to the list of known hosts. executing program [ 29.430904] audit: type=1400 audit(1513403596.108:7): avc: denied { map } for pid=3149 comm="syzkaller266847" path="/root/syzkaller266847111" 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 [ 29.500691] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu executing program executing program [ 29.841495] kasan: CONFIG_KASAN_INLINE enabled [ 29.846135] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.853482] general protection fault: 0000 [#1] SMP KASAN [ 29.858996] Dumping ftrace buffer: [ 29.862502] (ftrace buffer empty) [ 29.866179] Modules linked in: [ 29.869340] CPU: 0 PID: 3189 Comm: syzkaller266847 Not tainted 4.15.0-rc2-mm1+ #39 [ 29.877013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.886345] RIP: 0010:native_write_cr4+0x4/0x10 [ 29.890978] RSP: 0018:ffff8801c43275a0 EFLAGS: 00010093 [ 29.896308] RAX: ffff8801c2bc0340 RBX: 00000000001606f0 RCX: ffffffff811a2d22 [ 29.903547] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 29.910795] RBP: ffff8801c43275a0 R08: ffff8801c4327150 R09: ffff8801c2bc0340 [ 29.918048] R10: ffff8801c4327510 R11: ffffed0038864e2c R12: 0000000000000093 [ 29.925289] R13: ffff8801c2bc0340 R14: ffff8801db21a130 R15: ffff8801db21a130 [ 29.932528] FS: 00000000013f8880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 29.940720] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.946572] CR2: 0000000000000000 CR3: 0000000006225002 CR4: 00000000001626f0 [ 29.953809] Call Trace: [ 29.956367] hardware_disable+0x34a/0x4b0 [ 29.960485] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 29.964948] kvm_arch_hardware_disable+0x35/0xd0 [ 29.969667] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 29.974126] hardware_disable_nolock+0x30/0x40 [ 29.978676] on_each_cpu+0xca/0x1b0 [ 29.982268] hardware_disable_all_nolock+0x3e/0x50 [ 29.987162] kvm_put_kvm+0x956/0xde0 [ 29.990845] ? kvm_clear_guest+0xb0/0xb0 [ 29.994873] ? lock_downgrade+0x980/0x980 [ 29.998995] ? do_raw_spin_trylock+0x190/0x190 [ 30.003545] ? _raw_spin_unlock_irq+0x27/0x70 [ 30.008006] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 30.013000] ? kvm_irqfd_release+0xdd/0x120 [ 30.017284] ? kvm_irqfd_release+0xdd/0x120 [ 30.021572] ? kvm_put_kvm+0xde0/0xde0 [ 30.025424] kvm_vm_release+0x42/0x50 [ 30.029192] __fput+0x333/0x7f0 [ 30.032444] ? fput+0x140/0x140 [ 30.035694] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 30.041546] ? _raw_spin_unlock_irq+0x27/0x70 [ 30.046017] ____fput+0x15/0x20 [ 30.049268] task_work_run+0x199/0x270 [ 30.053122] ? task_work_cancel+0x210/0x210 [ 30.057409] ? _raw_spin_unlock+0x22/0x30 [ 30.061523] ? switch_task_namespaces+0x87/0xc0 [ 30.066163] do_exit+0x9bb/0x1ae0 [ 30.069593] ? hrtimer_try_to_cancel+0x51/0x5c0 [ 30.074236] ? mm_update_next_owner+0x930/0x930 [ 30.078872] ? __hrtimer_get_remaining+0x1c0/0x1c0 [ 30.083776] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 30.089636] ? _do_fork+0x2ae/0xf10 [ 30.093231] ? rcu_note_context_switch+0x710/0x710 [ 30.098135] ? fork_idle+0x2d0/0x2d0 [ 30.101814] ? __might_sleep+0x95/0x190 [ 30.105756] ? do_nanosleep+0x4fc/0x6e0 [ 30.109699] ? schedule_timeout_idle+0x90/0x90 [ 30.114254] ? memset+0x31/0x40 [ 30.117502] ? hrtimer_nanosleep+0x2cc/0x860 [ 30.121877] ? nanosleep_copyout+0x100/0x100 [ 30.126247] ? __might_sleep+0x95/0x190 [ 30.130187] ? kasan_check_write+0x14/0x20 [ 30.134387] ? _copy_from_user+0x99/0x110 [ 30.138504] ? __hrtimer_init+0x140/0x140 [ 30.142621] ? syscall_return_slowpath+0x550/0x550 [ 30.147518] do_group_exit+0x149/0x400 [ 30.151371] ? SyS_exit+0x30/0x30 [ 30.154791] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 30.159775] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.164501] SyS_exit_group+0x1d/0x20 [ 30.168269] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 30.172990] RIP: 0033:0x449009 [ 30.176147] RSP: 002b:00007ffcd254eb88 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 [ 30.183828] RAX: ffffffffffffffda RBX: 00007fd42927b700 RCX: 0000000000449009 [ 30.191064] RDX: 00000000004741a1 RSI: 0000000000000000 RDI: 0000000000000000 [ 30.198299] RBP: 00007ffcd254eb30 R08: 00000000006dd1c0 R09: 0000000000000000 [ 30.205532] R10: 00000000006dd144 R11: 0000000000000206 R12: 0000000000000000 [ 30.212768] R13: 00007ffcd254eb2f R14: 00007fd42927b9c0 R15: 0000000000000000 [ 30.220010] Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 44 0f 20 c0 5d [ 30.239074] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801c43275a0 [ 30.245188] ---[ end trace 98e53a59bc97d68f ]--- [ 30.249907] Kernel panic - not syncing: Fatal exception [ 30.255547] Dumping ftrace buffer: [ 30.259053] (ftrace buffer empty) [ 30.262729] Kernel Offset: disabled [ 30.266321] Rebooting in 86400 seconds..