[ 11.929622] audit: type=1400 audit(1513525326.613:5): avc: denied { syslog } for pid=2984 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [....] Starting enhanced syslogd: rsyslogd[?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: [ 16.754861] audit: type=1400 audit(1513525331.439:6): avc: denied { map } for pid=3131 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-9,10.128.15.235' (ECDSA) to the list of known hosts. executing program [ 23.104478] audit: type=1400 audit(1513525337.789:7): avc: denied { map } for pid=3145 comm="syzkaller032040" path="/root/syzkaller032040957" 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 [ 23.139490] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 23.161417] kasan: CONFIG_KASAN_INLINE enabled [ 23.166041] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 23.173373] general protection fault: 0000 [#1] SMP KASAN [ 23.178875] Dumping ftrace buffer: [ 23.182377] (ftrace buffer empty) [ 23.186062] Modules linked in: [ 23.189221] CPU: 0 PID: 3145 Comm: syzkaller032040 Not tainted 4.15.0-rc2-mm1+ #39 [ 23.196890] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.206569] RIP: 0010:native_write_cr4+0x4/0x10 [ 23.211198] RSP: 0018:ffff8801c510f5a0 EFLAGS: 00010093 [ 23.216524] RAX: ffff8801c5856480 RBX: 00000000001606f0 RCX: ffffffff811a2d22 [ 23.223757] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 23.230990] RBP: ffff8801c510f5a0 R08: ffff8801c510f150 R09: ffff8801c5856480 [ 23.238227] R10: ffff8801c510f510 R11: ffffed0038a21e2c R12: 0000000000000093 [ 23.245460] R13: ffff8801c5856480 R14: ffff8801db21a130 R15: ffff8801db21a130 [ 23.252693] FS: 00000000023b7880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 23.260880] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.266724] CR2: 0000000000000000 CR3: 0000000006225004 CR4: 00000000001626f0 [ 23.273959] Call Trace: [ 23.276513] hardware_disable+0x34a/0x4b0 [ 23.280628] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 23.285090] kvm_arch_hardware_disable+0x35/0xd0 [ 23.289809] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 23.294528] hardware_disable_nolock+0x30/0x40 [ 23.299074] on_each_cpu+0xca/0x1b0 [ 23.302664] hardware_disable_all_nolock+0x3e/0x50 [ 23.307556] kvm_put_kvm+0x956/0xde0 [ 23.311238] ? kvm_clear_guest+0xb0/0xb0 [ 23.315267] ? lock_downgrade+0x980/0x980 [ 23.319387] ? do_raw_spin_trylock+0x190/0x190 [ 23.323937] ? _raw_spin_unlock_irq+0x27/0x70 [ 23.328397] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.333381] ? kvm_irqfd_release+0xdd/0x120 [ 23.337666] ? kvm_irqfd_release+0xdd/0x120 [ 23.341952] ? kvm_put_kvm+0xde0/0xde0 [ 23.345804] kvm_vm_release+0x42/0x50 [ 23.349570] __fput+0x333/0x7f0 [ 23.352815] ? fput+0x140/0x140 [ 23.356059] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 23.361910] ? _raw_spin_unlock_irq+0x27/0x70 [ 23.366378] ____fput+0x15/0x20 [ 23.370240] task_work_run+0x199/0x270 [ 23.374092] ? task_work_cancel+0x210/0x210 [ 23.378379] ? _raw_spin_unlock+0x22/0x30 [ 23.382491] ? switch_task_namespaces+0x87/0xc0 [ 23.387127] do_exit+0x9bb/0x1ae0 [ 23.390545] ? __kvm_gfn_to_hva_cache_init+0xbb0/0xbb0 [ 23.395789] ? mm_update_next_owner+0x930/0x930 [ 23.400426] ? find_held_lock+0x39/0x1d0 [ 23.404457] ? lock_downgrade+0x980/0x980 [ 23.408575] ? user_return_notifier_unregister+0x23d/0x360 [ 23.415294] ? uprobe_post_sstep_notifier+0x120/0x120 [ 23.422444] ? __handle_mm_fault+0x3dd0/0x3dd0 [ 23.429029] ? vmacache_update+0xfe/0x130 [ 23.434272] ? kvm_on_user_return+0xe1/0x3c0 [ 23.440467] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.447530] ? trace_hardirqs_on+0xd/0x10 [ 23.451641] ? kvm_on_user_return+0x286/0x3c0 [ 23.456105] ? trace_hardirqs_off+0xd/0x10 [ 23.460304] ? exit_to_usermode_loop+0x198/0x2f0 [ 23.465026] ? ioctl_preallocate+0x2b0/0x2b0 [ 23.469398] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 23.474899] ? selinux_capable+0x40/0x40 [ 23.478931] ? __close_fd+0x222/0x360 [ 23.482699] do_group_exit+0x149/0x400 [ 23.486550] ? prepare_exit_to_usermode+0x340/0x340 [ 23.491529] ? SyS_exit+0x30/0x30 [ 23.494955] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.499932] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 23.504653] SyS_exit_group+0x1d/0x20 [ 23.508417] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 23.513137] RIP: 0033:0x441c38 [ 23.516290] RSP: 002b:00007ffe294de608 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 23.523960] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000441c38 [ 23.531194] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 23.538427] RBP: 00000000006cd018 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 23.545676] R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000404040 [ 23.552912] R13: 00000000004040d0 R14: 0000000000000000 R15: 0000000000000000 [ 23.560152] 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 [ 23.579212] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801c510f5a0 [ 23.585324] ---[ end trace 19d1e715ff68bfcc ]--- [ 23.590041] Kernel panic - not syncing: Fatal exception [ 23.596187] Dumping ftrace buffer: [ 23.599702] (ftrace buffer empty) [ 23.603381] Kernel Offset: disabled [ 23.606972] Rebooting in 86400 seconds..