[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 12.269579] audit: type=1400 audit(1515106052.533:6): avc: denied { map } for pid=3450 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 '10.128.0.33' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 18.420385] audit: type=1400 audit(1515106058.684:7): avc: denied { map } for pid=3465 comm="syzkaller045866" path="/root/syzkaller045866770" 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 [ 18.457830] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 18.486694] kasan: CONFIG_KASAN_INLINE enabled [ 18.491322] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 18.498652] general protection fault: 0000 [#1] SMP KASAN [ 18.504155] Dumping ftrace buffer: [ 18.507660] (ftrace buffer empty) [ 18.511335] Modules linked in: [ 18.514495] CPU: 1 PID: 3468 Comm: syzkaller045866 Not tainted 4.15.0-rc6-mm1+ #50 [ 18.522184] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.531510] RIP: 0010:native_write_cr4+0x4/0x10 [ 18.536141] RSP: 0018:ffff8801c02e7860 EFLAGS: 00010093 [ 18.541467] RAX: ffff8801bf69c040 RBX: 00000000001606e0 RCX: ffffffff8115d7c2 [ 18.548702] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000001606e0 [ 18.555956] RBP: ffff8801c02e7860 R08: ffffffff8105f787 R09: 0000000000000004 [ 18.563192] R10: ffff8801c02e7878 R11: 0000000000000001 R12: 0000000000000093 [ 18.570434] R13: ffff8801bf69c040 R14: ffff8801db51a130 R15: ffff8801db51a130 [ 18.577678] FS: 00007ff6b9401700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 18.585868] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.591714] CR2: 0000000000000000 CR3: 0000000005e22001 CR4: 00000000001626e0 [ 18.598952] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.606189] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.613423] Call Trace: [ 18.615981] hardware_disable+0x34a/0x4b0 [ 18.620094] ? smp_call_function_many+0x76/0x6e0 [ 18.624824] ? kvm_io_bus_get_dev+0x1b0/0x1b0 [ 18.629287] kvm_arch_hardware_disable+0x35/0xd0 [ 18.634014] ? kvm_io_bus_get_dev+0x1b0/0x1b0 [ 18.638477] hardware_disable_nolock+0x30/0x40 [ 18.643027] on_each_cpu+0xca/0x1b0 [ 18.646620] hardware_disable_all_nolock+0x3e/0x50 [ 18.651515] kvm_put_kvm+0x69c/0xa70 [ 18.655198] ? kvm_put_kvm+0xa70/0xa70 [ 18.659053] kvm_vm_release+0x42/0x50 [ 18.662820] __fput+0x291/0x6e0 [ 18.666066] ____fput+0x15/0x20 [ 18.669312] task_work_run+0x122/0x1a0 [ 18.673170] do_exit+0x7f4/0x2da0 [ 18.676592] ? mm_update_next_owner+0x690/0x690 [ 18.681235] ? find_held_lock+0x35/0x1e0 [ 18.685264] ? get_signal+0x644/0x1460 [ 18.689115] ? lock_downgrade+0x860/0x860 [ 18.693230] do_group_exit+0x108/0x320 [ 18.697090] get_signal+0x5e9/0x1460 [ 18.700774] do_signal+0x7f/0x1980 [ 18.704282] ? _raw_spin_unlock_irq+0x27/0x70 [ 18.708748] ? find_held_lock+0x35/0x1e0 [ 18.712776] ? setup_sigcontext+0x7d0/0x7d0 [ 18.717062] ? kvm_vcpu_fault+0x3d0/0x3d0 [ 18.721185] ? do_vfs_ioctl+0x439/0xfe0 [ 18.725124] ? selinux_file_ioctl+0x354/0x540 [ 18.729583] ? lock_downgrade+0x860/0x860 [ 18.733699] ? SyS_futex+0x1fd/0x2b0 [ 18.737388] ? exit_to_usermode_loop+0x3f/0x210 [ 18.742028] exit_to_usermode_loop+0x1aa/0x210 [ 18.746590] syscall_return_slowpath+0x383/0x430 [ 18.751314] entry_SYSCALL_64_fastpath+0x98/0x9a [ 18.756034] RIP: 0033:0x446189 [ 18.759189] RSP: 002b:00007ff6b9400cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 18.766861] RAX: fffffffffffffe00 RBX: 00000000006dbc3c RCX: 0000000000446189 [ 18.774105] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000006dbc3c [ 18.781341] RBP: 00000000006dbc38 R08: 0000000000000000 R09: 0000000000000000 [ 18.788575] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 18.795809] R13: 00007fff1b70b60f R14: 00007ff6b94019c0 R15: 000000000000000d [ 18.803050] 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 [ 18.822106] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801c02e7860 [ 18.828220] ---[ end trace e612c36a7125d87f ]--- [ 18.832938] Kernel panic - not syncing: Fatal exception [ 18.838298] Dumping ftrace buffer: [ 18.841806] (ftrace buffer empty) [ 18.845483] Kernel Offset: disabled [ 18.849075] Rebooting in 86400 seconds..