[....] Starting enhanced syslogd: rsyslogd[ 12.099653] audit: type=1400 audit(1513397781.847:5): avc: denied { syslog } for pid=2995 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: [ 17.685970] audit: type=1400 audit(1513397787.433:6): avc: denied { map } for pid=3135 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-1,10.128.15.223' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 24.268720] audit: type=1400 audit(1513397794.016:7): avc: denied { map } for pid=3149 comm="syzkaller656573" path="/root/syzkaller656573361" 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 executing program [ 24.429279] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 24.514950] kasan: CONFIG_KASAN_INLINE enabled [ 24.519582] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 24.526917] general protection fault: 0000 [#1] SMP KASAN [ 24.532422] Dumping ftrace buffer: [ 24.535925] (ftrace buffer empty) [ 24.539610] Modules linked in: [ 24.542772] CPU: 1 PID: 3149 Comm: syzkaller656573 Not tainted 4.15.0-rc2-mm1+ #39 [ 24.550441] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.559779] RIP: 0010:native_write_cr4+0x4/0x10 [ 24.564412] RSP: 0018:ffff8801c4d7f5a0 EFLAGS: 00010093 [ 24.569742] RAX: ffff8801c5e5c4c0 RBX: 00000000001606e0 RCX: ffffffff811a2d22 [ 24.576977] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000001606e0 [ 24.584218] RBP: ffff8801c4d7f5a0 R08: ffff8801c4d7f150 R09: ffff8801c5e5c4c0 [ 24.591461] R10: ffff8801c4d7f510 R11: ffffed00389afe2c R12: 0000000000000093 [ 24.598706] R13: ffff8801c5e5c4c0 R14: ffff8801db31a130 R15: ffff8801db31a130 [ 24.605943] FS: 00000000010c4880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 24.614134] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.619980] CR2: 0000000000000000 CR3: 0000000006225004 CR4: 00000000001626e0 [ 24.627216] Call Trace: [ 24.629777] hardware_disable+0x34a/0x4b0 [ 24.633894] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 24.638356] kvm_arch_hardware_disable+0x35/0xd0 [ 24.643083] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 24.647543] hardware_disable_nolock+0x30/0x40 [ 24.652103] on_each_cpu+0xca/0x1b0 [ 24.655784] hardware_disable_all_nolock+0x3e/0x50 [ 24.660678] kvm_put_kvm+0x956/0xde0 [ 24.664365] ? kvm_clear_guest+0xb0/0xb0 [ 24.668395] ? retint_kernel+0x10/0x10 [ 24.672264] ? kvm_irqfd_release+0xdd/0x120 [ 24.676551] ? kvm_irqfd_release+0xdd/0x120 [ 24.680839] ? kvm_put_kvm+0xde0/0xde0 [ 24.684693] kvm_vm_release+0x42/0x50 [ 24.688469] __fput+0x333/0x7f0 [ 24.691718] ? fput+0x140/0x140 [ 24.694966] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 24.700815] ? _raw_spin_unlock_irq+0x27/0x70 [ 24.705278] ____fput+0x15/0x20 [ 24.708530] task_work_run+0x199/0x270 [ 24.712384] ? task_work_cancel+0x210/0x210 [ 24.716671] ? _raw_spin_unlock+0x22/0x30 [ 24.720786] ? switch_task_namespaces+0x87/0xc0 [ 24.725429] do_exit+0x9bb/0x1ae0 [ 24.728850] ? hrtimer_try_to_cancel+0x51/0x5c0 [ 24.733484] ? mm_update_next_owner+0x930/0x930 [ 24.738117] ? __hrtimer_get_remaining+0x1c0/0x1c0 [ 24.743024] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 24.748874] ? _do_fork+0x2ae/0xf10 [ 24.752470] ? rcu_note_context_switch+0x710/0x710 [ 24.757362] ? fork_idle+0x2d0/0x2d0 [ 24.761041] ? __might_sleep+0x95/0x190 [ 24.764982] ? do_nanosleep+0x4fc/0x6e0 [ 24.768924] ? schedule_timeout_idle+0x90/0x90 [ 24.773481] ? memset+0x31/0x40 [ 24.776730] ? hrtimer_nanosleep+0x2cc/0x860 [ 24.781106] ? nanosleep_copyout+0x100/0x100 [ 24.785477] ? __might_sleep+0x95/0x190 [ 24.789420] ? kasan_check_write+0x14/0x20 [ 24.793619] ? _copy_from_user+0x99/0x110 [ 24.797737] ? __hrtimer_init+0x140/0x140 [ 24.801854] ? syscall_return_slowpath+0x550/0x550 [ 24.806750] do_group_exit+0x149/0x400 [ 24.810606] ? SyS_exit+0x30/0x30 [ 24.814027] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.819014] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.823742] SyS_exit_group+0x1d/0x20 [ 24.827510] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 24.832229] RIP: 0033:0x44bb68 [ 24.835383] RSP: 002b:00007ffd8d4994c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 24.843056] RAX: ffffffffffffffda RBX: 00007ff2767cd700 RCX: 000000000044bb68 [ 24.850291] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 24.857528] RBP: 00007ffd8d4992b0 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 24.864763] R10: 00007ff2767cd9d0 R11: 0000000000000246 R12: 0000000000000000 [ 24.871998] R13: 00007ffd8d4992af R14: 00007ff2767cd9c0 R15: 0000000000000000 [ 24.879251] 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 [ 24.898314] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801c4d7f5a0 [ 24.904427] ---[ end trace aa73e097d879e825 ]--- [ 24.909147] Kernel panic - not syncing: Fatal exception [ 24.914902] Dumping ftrace buffer: [ 24.918410] (ftrace buffer empty) [ 24.922087] Kernel Offset: disabled [ 24.925681] Rebooting in 86400 seconds..