[?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. [ 12.948707] audit: type=1400 audit(1513425887.317:6): avc: denied { map } for pid=3129 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-5,10.128.15.211' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 19.105320] audit: type=1400 audit(1513425893.474:7): avc: denied { map } for pid=3143 comm="syzkaller408102" path="/root/syzkaller408102534" 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 [ 19.138118] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 19.157486] kasan: CONFIG_KASAN_INLINE enabled [ 19.162104] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 19.169432] general protection fault: 0000 [#1] SMP KASAN [ 19.174934] Dumping ftrace buffer: [ 19.178438] (ftrace buffer empty) [ 19.182113] Modules linked in: [ 19.185290] CPU: 0 PID: 3143 Comm: syzkaller408102 Not tainted 4.15.0-rc3+ #224 [ 19.192710] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.202037] RIP: 0010:native_write_cr4+0x4/0x10 [ 19.206666] RSP: 0018:ffff8801c88b75a0 EFLAGS: 00010093 [ 19.211994] RAX: ffff8801ca65c5c0 RBX: 00000000001606f0 RCX: ffffffff811a2a92 [ 19.219232] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 19.226468] RBP: ffff8801c88b75a0 R08: 1ffff10039116e0f R09: 0000000000000004 [ 19.233703] R10: ffff8801c88b7510 R11: 0000000000000004 R12: 0000000000000093 [ 19.240941] R13: ffff8801ca65c5c0 R14: ffff8801db414850 R15: ffff8801db414850 [ 19.248177] FS: 0000000001512880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 19.256367] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.262213] CR2: 0000000000000000 CR3: 0000000005e22006 CR4: 00000000001626f0 [ 19.269450] Call Trace: [ 19.272007] hardware_disable+0x34a/0x4b0 [ 19.276128] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 19.280589] kvm_arch_hardware_disable+0x35/0xd0 [ 19.285311] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 19.289770] hardware_disable_nolock+0x30/0x40 [ 19.294318] on_each_cpu+0xca/0x1b0 [ 19.297911] hardware_disable_all_nolock+0x3e/0x50 [ 19.302804] kvm_put_kvm+0x956/0xdf0 [ 19.306488] ? kvm_clear_guest+0xb0/0xb0 [ 19.310516] ? kvm_irqfd_release+0xd1/0x120 [ 19.314803] ? lock_downgrade+0x980/0x980 [ 19.318924] ? _raw_spin_unlock_irq+0x27/0x70 [ 19.323383] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 19.328367] ? kvm_irqfd_release+0xdd/0x120 [ 19.332653] ? kvm_irqfd_release+0xdd/0x120 [ 19.336939] ? kvm_put_kvm+0xdf0/0xdf0 [ 19.340789] kvm_vm_release+0x42/0x50 [ 19.344557] __fput+0x327/0x7e0 [ 19.347805] ? fput+0x140/0x140 [ 19.351051] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 19.356898] ? _raw_spin_unlock_irq+0x27/0x70 [ 19.361361] ____fput+0x15/0x20 [ 19.364605] task_work_run+0x199/0x270 [ 19.368460] ? task_work_cancel+0x210/0x210 [ 19.372766] ? _raw_spin_unlock+0x22/0x30 [ 19.376880] ? switch_task_namespaces+0x87/0xc0 [ 19.381516] do_exit+0x9bb/0x1ad0 [ 19.384933] ? __kvm_gfn_to_hva_cache_init+0xbb0/0xbb0 [ 19.390175] ? mm_update_next_owner+0x930/0x930 [ 19.394807] ? find_held_lock+0x35/0x1d0 [ 19.398836] ? handle_mm_fault+0x248/0x8d0 [ 19.403048] ? find_held_lock+0x35/0x1d0 [ 19.407080] ? __do_page_fault+0x5f7/0xc90 [ 19.411282] ? lock_downgrade+0x980/0x980 [ 19.415398] ? down_read_trylock+0xdb/0x170 [ 19.419685] ? __do_page_fault+0x32d/0xc90 [ 19.423893] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 19.428440] ? vmacache_find+0x5f/0x280 [ 19.432383] ? up_read+0x1a/0x40 [ 19.435715] ? __do_page_fault+0x3d6/0xc90 [ 19.439912] ? task_work_run+0x1f4/0x270 [ 19.443942] ? __kvm_gfn_to_hva_cache_init+0xbb0/0xbb0 [ 19.449186] ? do_vfs_ioctl+0x486/0x1520 [ 19.453214] ? ioctl_preallocate+0x2b0/0x2b0 [ 19.457591] ? selinux_capable+0x40/0x40 [ 19.461620] ? __close_fd+0x222/0x360 [ 19.465402] do_group_exit+0x149/0x400 [ 19.469261] ? SyS_exit+0x30/0x30 [ 19.472684] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 19.477671] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 19.482393] SyS_exit_group+0x1d/0x20 [ 19.486158] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 19.490875] RIP: 0033:0x441c78 [ 19.494031] RSP: 002b:00007fffdaa06788 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 19.501701] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c78 [ 19.508937] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 19.516171] RBP: 00000000202b2800 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 19.523406] R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000009120 [ 19.530647] R13: 000000002aaaaaab R14: 0000000000000004 R15: 00000000202af000 [ 19.537889] 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 [ 19.556955] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801c88b75a0 [ 19.563069] ---[ end trace df895e61e45fdd5d ]--- [ 19.567794] Kernel panic - not syncing: Fatal exception [ 19.573709] Dumping ftrace buffer: [ 19.577226] (ftrace buffer empty) [ 19.580901] Kernel Offset: disabled [ 19.584491] Rebooting in 86400 seconds..