[?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. [ 11.971889] audit: type=1400 audit(1513535771.325:6): avc: denied { map } for pid=3130 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-1,10.128.0.13' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 18.112310] audit: type=1400 audit(1513535777.466:7): avc: denied { map } for pid=3144 comm="syzkaller372143" path="/root/syzkaller372143750" 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 [ 18.144989] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 18.164832] kasan: CONFIG_KASAN_INLINE enabled [ 18.169436] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 18.176774] general protection fault: 0000 [#1] SMP KASAN [ 18.182282] Dumping ftrace buffer: [ 18.185786] (ftrace buffer empty) [ 18.189464] Modules linked in: [ 18.192623] CPU: 1 PID: 3144 Comm: syzkaller372143 Not tainted 4.15.0-rc3+ #225 [ 18.200029] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.209357] RIP: 0010:native_write_cr4+0x4/0x10 [ 18.214002] RSP: 0018:ffff8801c8d175a0 EFLAGS: 00010093 [ 18.219333] RAX: ffff8801ca26a700 RBX: 00000000001606e0 RCX: ffffffff811a2a92 [ 18.226566] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000001606e0 [ 18.233800] RBP: ffff8801c8d175a0 R08: 1ffff100391a2e0f R09: 0000000000000004 [ 18.241038] R10: ffff8801c8d17510 R11: 0000000000000004 R12: 0000000000000093 [ 18.248271] R13: ffff8801ca26a700 R14: ffff8801db514850 R15: ffff8801db514850 [ 18.255511] FS: 00000000006e9880(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 18.263698] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.269542] CR2: 0000000000000000 CR3: 0000000005e22004 CR4: 00000000001626e0 [ 18.276778] Call Trace: [ 18.279335] hardware_disable+0x34a/0x4b0 [ 18.283449] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 18.287909] kvm_arch_hardware_disable+0x35/0xd0 [ 18.292634] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 18.297100] hardware_disable_nolock+0x30/0x40 [ 18.301647] on_each_cpu+0xca/0x1b0 [ 18.305239] hardware_disable_all_nolock+0x3e/0x50 [ 18.310134] kvm_put_kvm+0x956/0xdf0 [ 18.313816] ? kvm_clear_guest+0xb0/0xb0 [ 18.317847] ? kvm_irqfd_release+0xd1/0x120 [ 18.322133] ? lock_downgrade+0x980/0x980 [ 18.326253] ? _raw_spin_unlock_irq+0x27/0x70 [ 18.330714] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 18.335694] ? kvm_irqfd_release+0xdd/0x120 [ 18.339980] ? kvm_irqfd_release+0xdd/0x120 [ 18.344264] ? kvm_put_kvm+0xdf0/0xdf0 [ 18.348115] kvm_vm_release+0x42/0x50 [ 18.351882] __fput+0x327/0x7e0 [ 18.355128] ? fput+0x140/0x140 [ 18.358374] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 18.364915] ? _raw_spin_unlock_irq+0x27/0x70 [ 18.369375] ____fput+0x15/0x20 [ 18.372637] task_work_run+0x199/0x270 [ 18.376488] ? task_work_cancel+0x210/0x210 [ 18.380772] ? _raw_spin_unlock+0x22/0x30 [ 18.384884] ? switch_task_namespaces+0x87/0xc0 [ 18.389519] do_exit+0x9bb/0x1ad0 [ 18.392935] ? __kvm_gfn_to_hva_cache_init+0xbb0/0xbb0 [ 18.398176] ? mm_update_next_owner+0x930/0x930 [ 18.402808] ? find_held_lock+0x35/0x1d0 [ 18.406837] ? handle_mm_fault+0x248/0x8d0 [ 18.411038] ? find_held_lock+0x35/0x1d0 [ 18.415073] ? __do_page_fault+0x5f7/0xc90 [ 18.419271] ? lock_downgrade+0x980/0x980 [ 18.423399] ? user_return_notifier_unregister+0x23d/0x360 [ 18.428988] ? uprobe_post_sstep_notifier+0x120/0x120 [ 18.434139] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 18.438689] ? kvm_on_user_return+0xe1/0x3c0 [ 18.443062] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 18.448044] ? trace_hardirqs_on+0xd/0x10 [ 18.452157] ? kvm_on_user_return+0x286/0x3c0 [ 18.456619] ? trace_hardirqs_off+0xd/0x10 [ 18.460821] ? exit_to_usermode_loop+0x198/0x310 [ 18.465553] ? ioctl_preallocate+0x2b0/0x2b0 [ 18.469932] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 18.475437] ? selinux_capable+0x40/0x40 [ 18.479465] ? __close_fd+0x222/0x360 [ 18.483235] do_group_exit+0x149/0x400 [ 18.487090] ? prepare_exit_to_usermode+0x340/0x340 [ 18.492075] ? SyS_exit+0x30/0x30 [ 18.495493] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 18.500472] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 18.505195] SyS_exit_group+0x1d/0x20 [ 18.508960] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 18.513678] RIP: 0033:0x441c38 [ 18.516833] RSP: 002b:00007fff2334a088 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 18.524514] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000441c38 [ 18.531747] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 18.538980] RBP: 00000000006cd018 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 18.546212] R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000404040 [ 18.553445] R13: 00000000004040d0 R14: 0000000000000000 R15: 0000000000000000 [ 18.560686] 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 [ 18.580707] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801c8d175a0 [ 18.586819] ---[ end trace cb3defb8badcc797 ]--- [ 18.591536] Kernel panic - not syncing: Fatal exception [ 18.597651] Dumping ftrace buffer: [ 18.601157] (ftrace buffer empty) [ 18.604829] Kernel Offset: disabled [ 18.608421] Rebooting in 86400 seconds..