[....] Starting enhanced syslogd: rsyslogd[ 12.575783] audit: type=1400 audit(1513557501.013:5): avc: denied { syslog } for pid=2993 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?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: [ 19.252361] audit: type=1400 audit(1513557507.690:6): avc: denied { map } for pid=3132 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-6,10.128.15.232' (ECDSA) to the list of known hosts. [ 25.507418] audit: type=1400 audit(1513557513.945:7): avc: denied { map } for pid=3146 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2017/12/18 00:38:34 parsed 1 programs 2017/12/18 00:38:34 executed programs: 0 [ 25.618589] audit: type=1400 audit(1513557514.056:8): avc: denied { map } for pid=3146 comm="syz-execprog" path="/root/syzkaller-shm788935507" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 25.669643] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 25.687700] kasan: CONFIG_KASAN_INLINE enabled [ 25.692291] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.699645] general protection fault: 0000 [#1] SMP KASAN [ 25.705151] Dumping ftrace buffer: [ 25.708656] (ftrace buffer empty) [ 25.712332] Modules linked in: [ 25.715501] CPU: 1 PID: 3155 Comm: syz-executor0 Not tainted 4.15.0-rc2-mm1+ #39 [ 25.722996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.732322] RIP: 0010:native_write_cr4+0x4/0x10 [ 25.736952] RSP: 0018:ffff8801c5d475a0 EFLAGS: 00010093 [ 25.742280] RAX: ffff8801c5da0180 RBX: 00000000001606e0 RCX: ffffffff811a2d22 [ 25.749519] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000001606e0 [ 25.756755] RBP: ffff8801c5d475a0 R08: ffff8801c5d47150 R09: ffff8801c5da0180 [ 25.763990] R10: ffff8801c5d47510 R11: ffffed0038ba8e2c R12: 0000000000000093 [ 25.771225] R13: ffff8801c5da0180 R14: ffff8801db31a130 R15: ffff8801db31a130 [ 25.778462] FS: 0000000001d4e940(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 25.786655] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.792502] CR2: 0000000000000000 CR3: 0000000006225005 CR4: 00000000001626e0 [ 25.799737] Call Trace: [ 25.802297] hardware_disable+0x34a/0x4b0 [ 25.806418] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 25.810880] kvm_arch_hardware_disable+0x35/0xd0 [ 25.815602] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 25.820062] hardware_disable_nolock+0x30/0x40 [ 25.824609] on_each_cpu+0xca/0x1b0 [ 25.828201] hardware_disable_all_nolock+0x3e/0x50 [ 25.833093] kvm_put_kvm+0x956/0xde0 [ 25.836783] ? kvm_clear_guest+0xb0/0xb0 [ 25.840810] ? lock_downgrade+0x980/0x980 [ 25.844932] ? do_raw_spin_trylock+0x190/0x190 [ 25.849480] ? _raw_spin_unlock_irq+0x27/0x70 [ 25.853939] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.858923] ? kvm_irqfd_release+0xdd/0x120 [ 25.863213] ? kvm_irqfd_release+0xdd/0x120 [ 25.867502] ? kvm_put_kvm+0xde0/0xde0 [ 25.871355] kvm_vm_release+0x42/0x50 [ 25.875124] __fput+0x333/0x7f0 [ 25.878381] ? fput+0x140/0x140 [ 25.881627] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 25.887476] ? _raw_spin_unlock_irq+0x27/0x70 [ 25.891939] ____fput+0x15/0x20 [ 25.895184] task_work_run+0x199/0x270 [ 25.899039] ? task_work_cancel+0x210/0x210 [ 25.903324] ? _raw_spin_unlock+0x22/0x30 [ 25.907435] ? switch_task_namespaces+0x87/0xc0 [ 25.912077] do_exit+0x9bb/0x1ae0 [ 25.915502] ? ttwu_do_wakeup+0x4d0/0x710 [ 25.919617] ? mm_update_next_owner+0x930/0x930 [ 25.924252] ? do_raw_spin_trylock+0x190/0x190 [ 25.928802] ? do_raw_spin_trylock+0x190/0x190 [ 25.933354] ? trace_hardirqs_off+0xd/0x10 [ 25.937554] ? _raw_spin_unlock_irqrestore+0xa6/0xba [ 25.942620] ? check_noncircular+0x20/0x20 [ 25.946823] ? migrate_swap_stop+0x970/0x970 [ 25.951195] ? SyS_futex+0x2d3/0x390 [ 25.954876] ? find_held_lock+0x39/0x1d0 [ 25.958907] ? retint_kernel+0x10/0x10 [ 25.962767] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.967752] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.972487] ? retint_kernel+0x10/0x10 [ 25.976344] ? _raw_spin_unlock_irq+0x56/0x70 [ 25.980807] do_group_exit+0x149/0x400 [ 25.984659] ? do_futex+0x2280/0x2280 [ 25.988428] ? SyS_exit+0x30/0x30 [ 25.991845] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.996827] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 26.001548] SyS_exit_group+0x1d/0x20 [ 26.005322] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 26.010043] RIP: 0033:0x452a09 [ 26.013197] RSP: 002b:00007ffcaeec8428 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 [ 26.020867] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000452a09 [ 26.028102] RDX: 000000000000021e RSI: 0000000000720618 RDI: 0000000000000000 [ 26.035336] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 26.042570] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffcaeec83d0 [ 26.049802] R13: 000000000071bea0 R14: 00000000000001f2 R15: 0000000000000002 [ 26.057044] 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 [ 26.076110] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801c5d475a0 [ 26.082220] ---[ end trace 0697a25ceebde3e1 ]--- [ 26.086936] Kernel panic - not syncing: Fatal exception [ 26.092293] Dumping ftrace buffer: [ 26.095796] (ftrace buffer empty) [ 26.099471] Kernel Offset: disabled [ 26.103064] Rebooting in 86400 seconds..