[....] Starting enhanced syslogd: rsyslogd[ 12.354773] audit: type=1400 audit(1513540658.443:5): 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 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. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.247415] audit: type=1400 audit(1513540664.336:6): avc: denied { map } for pid=3133 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-0,10.128.0.49' (ECDSA) to the list of known hosts. executing program [ 36.429724] audit: type=1400 audit(1513540682.518:7): avc: denied { map } for pid=3150 comm="syzkaller032076" path="/root/syzkaller032076492" 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 [ 36.577301] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 36.693768] kasan: CONFIG_KASAN_INLINE enabled [ 36.698389] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 36.705727] general protection fault: 0000 [#1] SMP KASAN [ 36.711234] Dumping ftrace buffer: [ 36.714738] (ftrace buffer empty) [ 36.718415] Modules linked in: [ 36.721577] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-rc2-mm1+ #39 [ 36.728469] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.737795] RIP: 0010:native_write_cr4+0x4/0x10 [ 36.742426] RSP: 0018:ffff8801db207ca8 EFLAGS: 00010006 [ 36.747756] RAX: ffffffff8622f380 RBX: 00000000001606f0 RCX: ffffffff811a2d22 [ 36.755253] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 36.762490] RBP: ffff8801db207ca8 R08: 0000000000000001 R09: ffff88021fff8008 [ 36.769726] R10: ffff88021fff8010 R11: ffff88021fff801d R12: 0000000000000006 [ 36.776963] R13: ffffffff8622f380 R14: ffff8801db21a130 R15: ffff8801db21a130 [ 36.784204] FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 36.792397] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.798253] CR2: 00007f86c7ef5000 CR3: 0000000006225003 CR4: 00000000001626f0 [ 36.805488] Call Trace: [ 36.808037] [ 36.810156] hardware_disable+0x34a/0x4b0 [ 36.814269] ? pvclock_read_flags+0x160/0x160 [ 36.818731] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 36.823191] kvm_arch_hardware_disable+0x35/0xd0 [ 36.827916] hardware_disable_nolock+0x30/0x40 [ 36.832465] flush_smp_call_function_queue+0x1f4/0x570 [ 36.837708] ? cpumask_weight+0x40/0x40 [ 36.841647] ? nr_iowait+0x210/0x210 [ 36.845325] ? rcu_idle_exit+0x410/0x410 [ 36.849352] ? tick_program_event+0x83/0x100 [ 36.853725] ? hrtimer_interrupt+0x489/0x5f0 [ 36.858100] ? rcu_pm_notify+0xc0/0xc0 [ 36.861959] generic_smp_call_function_single_interrupt+0x13/0x30 [ 36.868159] smp_call_function_single_interrupt+0x103/0x640 [ 36.873837] ? smp_call_function_interrupt+0x640/0x640 [ 36.879080] ? _raw_spin_lock+0x32/0x40 [ 36.883023] ? _raw_spin_unlock+0x22/0x30 [ 36.887137] ? handle_edge_irq+0x2b4/0x7c0 [ 36.891339] ? task_prio+0x40/0x40 [ 36.894849] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.899661] call_function_single_interrupt+0xa9/0xb0 [ 36.904813] [ 36.907016] RIP: 0010:native_safe_halt+0x6/0x10 [ 36.911645] RSP: 0018:ffffffff86207d08 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff04 [ 36.919317] RAX: dffffc0000000000 RBX: 1ffffffff0c40fa4 RCX: 0000000000000000 [ 36.926554] RDX: 1ffffffff0c59734 RSI: 0000000000000001 RDI: ffffffff862cb9a0 [ 36.933791] RBP: ffffffff86207d08 R08: 0000000000000000 R09: 0000000000000000 [ 36.941026] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 36.948262] R13: ffffffff86207dc0 R14: ffffffff869eb920 R15: 0000000000000000 [ 36.956200] ? trace_hardirqs_on+0xd/0x10 [ 36.960313] default_idle+0xbf/0x430 [ 36.963994] ? __sched_text_end+0x4/0x4 [ 36.967935] ? rcu_eqs_special_set+0x1e0/0x1e0 [ 36.972492] ? tsc_verify_tsc_adjust+0xf6/0x3e0 [ 36.977125] ? set_cpu_sd_state_idle+0x1dc/0x2d0 [ 36.981844] ? mark_tsc_async_resets+0x30/0x30 [ 36.986395] arch_cpu_idle+0xa/0x10 [ 36.989986] default_idle_call+0x36/0x90 [ 36.994013] do_idle+0x24a/0x3b0 [ 36.997347] cpu_startup_entry+0x18/0x20 [ 37.001371] rest_init+0xed/0xf0 [ 37.004706] start_kernel+0x72e/0x754 [ 37.008471] ? mem_encrypt_init+0xb/0xb [ 37.012411] ? x86_family+0x32/0x40 [ 37.016003] ? load_ucode_bsp+0x1ea/0x1f6 [ 37.020117] x86_64_start_reservations+0x2a/0x2c [ 37.024839] x86_64_start_kernel+0x77/0x7a [ 37.029039] secondary_startup_64+0xa5/0xb0 [ 37.033331] 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 [ 37.052390] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db207ca8 [ 37.058854] ---[ end trace 4b1de80b46c18562 ]--- [ 37.063573] Kernel panic - not syncing: Fatal exception in interrupt [ 37.070065] Dumping ftrace buffer: [ 37.073570] (ftrace buffer empty) [ 37.077256] Kernel Offset: disabled [ 37.080850] Rebooting in 86400 seconds..