[?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. [ 12.004716] audit: type=1400 audit(1513458483.527:6): avc: denied { map } for pid=3127 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-kasan-gce-0,10.128.15.217' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 20.592635] audit: type=1400 audit(1513458492.115:7): avc: denied { map } for pid=3142 comm="syzkaller429302" path="/root/syzkaller429302696" 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 [ 20.625387] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 20.645018] kasan: CONFIG_KASAN_INLINE enabled [ 20.649629] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 20.656956] general protection fault: 0000 [#1] SMP KASAN [ 20.662458] Dumping ftrace buffer: [ 20.665959] (ftrace buffer empty) [ 20.669635] Modules linked in: [ 20.672793] CPU: 1 PID: 3142 Comm: syzkaller429302 Not tainted 4.15.0-rc3+ #224 [ 20.680201] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.689525] RIP: 0010:native_write_cr4+0x4/0x10 [ 20.694155] RSP: 0018:ffff8801ca6f75a0 EFLAGS: 00010093 [ 20.699480] RAX: ffff8801ca1c8700 RBX: 00000000001606e0 RCX: ffffffff811a2a92 [ 20.706712] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000001606e0 [ 20.713951] RBP: ffff8801ca6f75a0 R08: 1ffff100394dee0f R09: 0000000000000004 [ 20.721183] R10: ffff8801ca6f7510 R11: 0000000000000004 R12: 0000000000000093 [ 20.728415] R13: ffff8801ca1c8700 R14: ffff8801db514850 R15: ffff8801db514850 [ 20.735651] FS: 0000000001031880(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 20.743837] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.749682] CR2: 0000000000000000 CR3: 0000000005e22006 CR4: 00000000001626e0 [ 20.756916] Call Trace: [ 20.759470] hardware_disable+0x34a/0x4b0 [ 20.763585] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 20.768048] kvm_arch_hardware_disable+0x35/0xd0 [ 20.772769] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 20.777226] hardware_disable_nolock+0x30/0x40 [ 20.781772] on_each_cpu+0xca/0x1b0 [ 20.785363] hardware_disable_all_nolock+0x3e/0x50 [ 20.790255] kvm_put_kvm+0x956/0xdf0 [ 20.793936] ? kvm_clear_guest+0xb0/0xb0 [ 20.797963] ? kvm_irqfd_release+0xd1/0x120 [ 20.802248] ? lock_downgrade+0x980/0x980 [ 20.806372] ? _raw_spin_unlock_irq+0x27/0x70 [ 20.810830] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 20.815812] ? kvm_irqfd_release+0xdd/0x120 [ 20.820096] ? kvm_irqfd_release+0xdd/0x120 [ 20.824382] ? kvm_put_kvm+0xdf0/0xdf0 [ 20.828232] kvm_vm_release+0x42/0x50 [ 20.831998] __fput+0x327/0x7e0 [ 20.835246] ? fput+0x140/0x140 [ 20.838490] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 20.844337] ? _raw_spin_unlock_irq+0x27/0x70 [ 20.848796] ____fput+0x15/0x20 [ 20.852039] task_work_run+0x199/0x270 [ 20.855890] ? task_work_cancel+0x210/0x210 [ 20.860174] ? _raw_spin_unlock+0x22/0x30 [ 20.864287] ? switch_task_namespaces+0x87/0xc0 [ 20.868924] do_exit+0x9bb/0x1ad0 [ 20.872342] ? __kvm_gfn_to_hva_cache_init+0xbb0/0xbb0 [ 20.877583] ? mm_update_next_owner+0x930/0x930 [ 20.882214] ? find_held_lock+0x35/0x1d0 [ 20.886246] ? handle_mm_fault+0x248/0x8d0 [ 20.890444] ? find_held_lock+0x35/0x1d0 [ 20.894473] ? __do_page_fault+0x5f7/0xc90 [ 20.898670] ? lock_downgrade+0x980/0x980 [ 20.902787] ? user_return_notifier_unregister+0x23d/0x360 [ 20.908374] ? uprobe_post_sstep_notifier+0x120/0x120 [ 20.913525] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 20.918074] ? kvm_on_user_return+0xe1/0x3c0 [ 20.922448] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 20.927427] ? trace_hardirqs_on+0xd/0x10 [ 20.931540] ? kvm_on_user_return+0x286/0x3c0 [ 20.936005] ? trace_hardirqs_off+0xd/0x10 [ 20.940209] ? exit_to_usermode_loop+0x198/0x310 [ 20.944928] ? ioctl_preallocate+0x2b0/0x2b0 [ 20.949318] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 20.954819] ? selinux_capable+0x40/0x40 [ 20.959305] ? __close_fd+0x222/0x360 [ 20.963074] do_group_exit+0x149/0x400 [ 20.966934] ? prepare_exit_to_usermode+0x340/0x340 [ 20.971912] ? SyS_exit+0x30/0x30 [ 20.975331] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 20.980312] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 20.985032] SyS_exit_group+0x1d/0x20 [ 20.988802] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 20.993521] RIP: 0033:0x441c78 [ 20.996675] RSP: 002b:00007ffe68e20f68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 21.004363] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000441c78 [ 21.011597] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 21.018832] RBP: 00000000006cd018 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 21.026064] R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000404080 [ 21.033298] R13: 0000000000404110 R14: 0000000000000000 R15: 0000000000000000 [ 21.040538] 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 [ 21.059601] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801ca6f75a0 [ 21.065714] ---[ end trace ca14f0c15b26c251 ]--- [ 21.070429] Kernel panic - not syncing: Fatal exception [ 21.076180] Dumping ftrace buffer: [ 21.079683] (ftrace buffer empty) [ 21.083357] Kernel Offset: disabled [ 21.086951] Rebooting in 86400 seconds..