[....] Starting enhanced syslogd: rsyslogd[ 10.652595] audit: type=1400 audit(1513506527.186:5): avc: denied { syslog } for pid=2982 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: [ 16.383985] audit: type=1400 audit(1513506532.917:6): avc: denied { map } for pid=3122 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-kasan-gce-4,10.128.0.39' (ECDSA) to the list of known hosts. executing program [ 22.517044] audit: type=1400 audit(1513506539.050:7): avc: denied { map } for pid=3136 comm="syzkaller044789" path="/root/syzkaller044789048" 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 [ 22.549576] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 22.562453] kasan: CONFIG_KASAN_INLINE enabled [ 22.567068] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 22.574399] general protection fault: 0000 [#1] SMP KASAN [ 22.579902] Dumping ftrace buffer: [ 22.583403] (ftrace buffer empty) [ 22.587078] Modules linked in: [ 22.590239] CPU: 0 PID: 3136 Comm: syzkaller044789 Not tainted 4.15.0-rc3+ #225 [ 22.597653] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 22.606978] RIP: 0010:native_write_cr4+0x4/0x10 [ 22.611608] RSP: 0018:ffff8801c8d075a0 EFLAGS: 00010093 [ 22.616935] RAX: ffff8801cb9622c0 RBX: 00000000001606f0 RCX: ffffffff811a2a92 [ 22.624170] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 22.631404] RBP: ffff8801c8d075a0 R08: 1ffff100391a0e0f R09: 0000000000000004 [ 22.638639] R10: ffff8801c8d07510 R11: 0000000000000004 R12: 0000000000000093 [ 22.645874] R13: ffff8801cb9622c0 R14: ffff8801db414850 R15: ffff8801db414850 [ 22.653110] FS: 000000000133e880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 22.661301] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.667145] CR2: 0000000000000000 CR3: 0000000005e22005 CR4: 00000000001626f0 [ 22.674382] Call Trace: [ 22.676939] hardware_disable+0x34a/0x4b0 [ 22.681055] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 22.685517] kvm_arch_hardware_disable+0x35/0xd0 [ 22.690236] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 22.694695] hardware_disable_nolock+0x30/0x40 [ 22.699240] on_each_cpu+0xca/0x1b0 [ 22.702834] hardware_disable_all_nolock+0x3e/0x50 [ 22.707728] kvm_put_kvm+0x956/0xdf0 [ 22.711409] ? kvm_clear_guest+0xb0/0xb0 [ 22.715438] ? kvm_irqfd_release+0xd1/0x120 [ 22.719726] ? lock_downgrade+0x980/0x980 [ 22.723846] ? _raw_spin_unlock_irq+0x27/0x70 [ 22.728308] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 22.733292] ? kvm_irqfd_release+0xdd/0x120 [ 22.737578] ? kvm_irqfd_release+0xdd/0x120 [ 22.741863] ? kvm_put_kvm+0xdf0/0xdf0 [ 22.745714] kvm_vm_release+0x42/0x50 [ 22.749480] __fput+0x327/0x7e0 [ 22.752732] ? fput+0x140/0x140 [ 22.755979] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 22.761829] ? _raw_spin_unlock_irq+0x27/0x70 [ 22.766293] ____fput+0x15/0x20 [ 22.769538] task_work_run+0x199/0x270 [ 22.773392] ? task_work_cancel+0x210/0x210 [ 22.777677] ? _raw_spin_unlock+0x22/0x30 [ 22.781796] ? switch_task_namespaces+0x87/0xc0 [ 22.786431] do_exit+0x9bb/0x1ad0 [ 22.789850] ? __kvm_gfn_to_hva_cache_init+0xbb0/0xbb0 [ 22.795100] ? mm_update_next_owner+0x930/0x930 [ 22.799735] ? mntput_no_expire+0x15e/0xa90 [ 22.804023] ? _raw_spin_unlock+0x22/0x30 [ 22.808140] ? mnt_get_count+0x150/0x150 [ 22.812174] ? find_held_lock+0x35/0x1d0 [ 22.816205] ? task_work_run+0x16c/0x270 [ 22.820229] ? lock_downgrade+0x980/0x980 [ 22.824342] ? mntput+0x66/0x90 [ 22.827587] ? lock_release+0xa40/0xa40 [ 22.831527] ? do_raw_spin_trylock+0x190/0x190 [ 22.836078] ? _raw_spin_unlock_irq+0x27/0x70 [ 22.840537] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 22.845520] ? trace_hardirqs_on+0xd/0x10 [ 22.849632] ? _raw_spin_unlock_irq+0x27/0x70 [ 22.854091] ? task_work_run+0x1f4/0x270 [ 22.858120] ? task_work_cancel+0x210/0x210 [ 22.862414] ? __kvm_gfn_to_hva_cache_init+0xbb0/0xbb0 [ 22.867655] ? do_vfs_ioctl+0x486/0x1520 [ 22.871685] ? ioctl_preallocate+0x2b0/0x2b0 [ 22.876068] ? selinux_capable+0x40/0x40 [ 22.880115] ? __close_fd+0x222/0x360 [ 22.883907] do_group_exit+0x149/0x400 [ 22.887770] ? SyS_exit+0x30/0x30 [ 22.891195] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 22.896206] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 22.900929] SyS_exit_group+0x1d/0x20 [ 22.904705] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 22.909423] RIP: 0033:0x441c98 [ 22.912577] RSP: 002b:00007ffcfa450ad8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 22.920255] RAX: ffffffffffffffda RBX: 00007ffcfa44f690 RCX: 0000000000441c98 [ 22.927490] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 22.934728] RBP: 0000000000000006 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 22.941963] R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000000000 [ 22.949198] R13: 00000000ffffffff R14: ffffffffffffffff R15: 00000000208f0000 [ 22.956442] 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 [ 22.975515] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801c8d075a0 [ 22.981630] ---[ end trace e758daa478f6e579 ]--- [ 22.986348] Kernel panic - not syncing: Fatal exception [ 22.992060] Dumping ftrace buffer: [ 22.995569] (ftrace buffer empty) [ 22.999246] Kernel Offset: disabled [ 23.002836] Rebooting in 86400 seconds..