[....] Starting enhanced syslogd: rsyslogd[ 11.108412] audit: type=1400 audit(1514301563.488:5): avc: denied { syslog } for pid=2994 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: [ 16.562256] audit: type=1400 audit(1514301568.941:6): 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-kasan-gce-7,10.128.0.49' (ECDSA) to the list of known hosts. executing program executing program executing program [ 22.770008] audit: type=1400 audit(1514301575.149:7): avc: denied { map } for pid=3149 comm="syzkaller674854" path="/root/syzkaller674854426" 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 [ 22.807393] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu executing program executing program executing program executing program [ 22.983245] kasan: CONFIG_KASAN_INLINE enabled [ 22.987856] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 22.995186] general protection fault: 0000 [#1] SMP KASAN [ 23.000688] Dumping ftrace buffer: [ 23.004192] (ftrace buffer empty) [ 23.007868] Modules linked in: [ 23.011028] CPU: 0 PID: 1604 Comm: udevd Not tainted 4.15.0-rc5+ #237 [ 23.017568] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.026895] RIP: 0010:native_write_cr4+0x4/0x10 [ 23.031525] RSP: 0000:ffff8801db407ca8 EFLAGS: 00010006 [ 23.036857] RAX: ffff8801d04e03c0 RBX: 00000000001606f0 RCX: ffffffff811a2f12 [ 23.044095] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 23.051333] RBP: ffff8801db407ca8 R08: 00007ff71d2e8200 R09: 00007ff71d08a7d0 [ 23.058570] R10: 7665642f7379732f R11: 00007ff71d0b9c10 R12: 0000000000000006 [ 23.065808] R13: ffff8801d04e03c0 R14: ffff8801db415850 R15: ffff8801db415850 [ 23.073046] FS: 00007ff71d92c7a0(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 23.081239] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.087085] CR2: 00007ff71d933000 CR3: 00000001d0b0f002 CR4: 00000000001626f0 [ 23.094322] Call Trace: [ 23.096872] [ 23.098994] hardware_disable+0x34a/0x4b0 [ 23.103112] ? irq_work_sync+0x1a0/0x1a0 [ 23.107141] ? lock_downgrade+0x980/0x980 [ 23.111265] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 23.115736] kvm_arch_hardware_disable+0x35/0xd0 [ 23.120457] hardware_disable_nolock+0x30/0x40 [ 23.125016] flush_smp_call_function_queue+0x1f4/0x570 [ 23.130263] ? cpumask_weight+0x40/0x40 [ 23.134204] ? tick_program_event+0x83/0x100 [ 23.138583] ? rcu_pm_notify+0xc0/0xc0 [ 23.142450] generic_smp_call_function_single_interrupt+0x13/0x30 [ 23.148650] smp_call_function_single_interrupt+0x103/0x640 [ 23.154328] ? smp_call_function_interrupt+0x640/0x640 [ 23.159570] ? _raw_spin_lock+0x32/0x40 [ 23.163513] ? _raw_spin_unlock+0x22/0x30 [ 23.167626] ? handle_edge_irq+0x2b4/0x7c0 [ 23.171829] ? task_prio+0x40/0x40 [ 23.175339] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 23.180158] call_function_single_interrupt+0xa9/0xb0 [ 23.185312] [ 23.187515] RIP: 0033:0x7ff71cb4f8d0 [ 23.191193] RSP: 002b:00007ffc2b1a0968 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff04 [ 23.198873] RAX: 0000000000000000 RBX: 0000000001314fc0 RCX: 00000000013150b0 [ 23.206115] RDX: 0000000000000000 RSI: 00007ff71cfd4f10 RDI: 00007ffc2b1a0970 [ 23.213356] RBP: 0000000000000001 R08: 00007ff71d2e8200 R09: 00007ff71d08a7d0 [ 23.220591] R10: 7665642f7379732f R11: 00007ff71d0b9c10 R12: 0000000000000001 [ 23.227827] R13: 00007ffc2b1a0a20 R14: 0000000001314e60 R15: 00000000012de030 [ 23.235068] 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 [ 23.254143] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db407ca8 [ 23.260262] ---[ end trace 9a9f17d9822ce016 ]--- [ 23.264981] Kernel panic - not syncing: Fatal exception in interrupt [ 23.271472] Dumping ftrace buffer: [ 23.274978] (ftrace buffer empty) [ 23.278656] Kernel Offset: disabled [ 23.282251] Rebooting in 86400 seconds..