[....] Starting enhanced syslogd: rsyslogd[ 11.437885] audit: type=1400 audit(1514153493.916:5): avc: denied { syslog } for pid=2990 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: [ 17.281413] audit: type=1400 audit(1514153499.760:6): avc: denied { map } for pid=3128 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-0,10.128.15.221' (ECDSA) to the list of known hosts. executing program [ 23.503517] audit: type=1400 audit(1514153505.982:7): avc: denied { map } for pid=3142 comm="syzkaller060735" path="/root/syzkaller060735474" 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 [ 23.539279] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 23.585029] kasan: CONFIG_KASAN_INLINE enabled [ 23.589645] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 23.596986] general protection fault: 0000 [#1] SMP KASAN [ 23.602644] Dumping ftrace buffer: [ 23.606236] (ftrace buffer empty) [ 23.609929] Modules linked in: [ 23.613095] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-rc5+ #237 [ 23.619725] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.629053] RIP: 0010:native_write_cr4+0x4/0x10 [ 23.633685] RSP: 0018:ffff8801db407ca8 EFLAGS: 00010006 [ 23.639017] RAX: ffffffff85e2c340 RBX: 00000000001606f0 RCX: ffffffff811a2f12 [ 23.646263] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 23.653499] RBP: ffff8801db407ca8 R08: 0000000000000001 R09: ffff88021fff8008 [ 23.660735] R10: ffff88021fff8010 R11: ffff88021fff801d R12: 0000000000000006 [ 23.669355] R13: ffffffff85e2c340 R14: ffff8801db415850 R15: ffff8801db415850 [ 23.676594] FS: 0000000000000000(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 23.684795] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.690650] CR2: 00007f3190561000 CR3: 0000000005e22002 CR4: 00000000001626f0 [ 23.697889] Call Trace: [ 23.700440] [ 23.702564] hardware_disable+0x34a/0x4b0 [ 23.706681] ? pvclock_read_flags+0x160/0x160 [ 23.711147] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 23.715613] kvm_arch_hardware_disable+0x35/0xd0 [ 23.720343] hardware_disable_nolock+0x30/0x40 [ 23.724895] flush_smp_call_function_queue+0x1f4/0x570 [ 23.730149] ? cpumask_weight+0x40/0x40 [ 23.734093] ? nr_iowait+0x210/0x210 [ 23.737773] ? tick_program_event+0x83/0x100 [ 23.742152] ? rcu_pm_notify+0xc0/0xc0 [ 23.746018] generic_smp_call_function_single_interrupt+0x13/0x30 [ 23.753053] smp_call_function_single_interrupt+0x103/0x640 [ 23.758734] ? smp_call_function_interrupt+0x640/0x640 [ 23.763981] ? _raw_spin_lock+0x32/0x40 [ 23.767929] ? _raw_spin_unlock+0x22/0x30 [ 23.772047] ? handle_edge_irq+0x2b4/0x7c0 [ 23.776249] ? task_prio+0x40/0x40 [ 23.779762] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 23.784573] ? tick_nohz_idle_enter+0x120/0x220 [ 23.789210] call_function_single_interrupt+0xa9/0xb0 [ 23.794370] [ 23.796578] RIP: 0010:native_safe_halt+0x6/0x10 [ 23.801210] RSP: 0018:ffffffff85e07c38 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff04 [ 23.808885] RAX: dffffc0000000000 RBX: 1ffffffff0bc0f8a RCX: 0000000000000000 [ 23.816122] RDX: 1ffffffff0bd9040 RSI: 0000000000000001 RDI: ffffffff85ec8200 [ 23.823366] RBP: ffffffff85e07c38 R08: ffffffff8163a3d0 R09: 0000000000000000 [ 23.830601] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 23.837836] R13: ffffffff85e07cf0 R14: ffffffff865de260 R15: 0000000000000000 [ 23.845081] ? tick_nohz_idle_enter+0x120/0x220 [ 23.849720] ? trace_hardirqs_on+0xd/0x10 [ 23.853832] default_idle+0xbf/0x460 [ 23.857515] ? __sched_text_end+0x4/0x4 [ 23.861467] arch_cpu_idle+0xa/0x10 [ 23.865076] default_idle_call+0x36/0x90 [ 23.869104] do_idle+0x24a/0x3b0 [ 23.872441] cpu_startup_entry+0x104/0x120 [ 23.876641] ? cpu_in_idle+0x20/0x20 [ 23.880320] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.885302] ? trace_hardirqs_on+0xd/0x10 [ 23.889425] rest_init+0xed/0xf0 [ 23.892758] start_kernel+0x7f1/0x819 [ 23.896531] ? mem_encrypt_init+0xb/0xb [ 23.900473] ? early_idt_handler_common+0x3b/0x60 [ 23.905286] ? x86_family+0x32/0x40 [ 23.908882] x86_64_start_reservations+0x2a/0x2c [ 23.913605] x86_64_start_kernel+0x77/0x7a [ 23.917812] secondary_startup_64+0xa5/0xb0 [ 23.922105] 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 [ 23.941186] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db407ca8 [ 23.947308] ---[ end trace a0669160716792f4 ]--- [ 23.952027] Kernel panic - not syncing: Fatal exception in interrupt [ 23.958945] Dumping ftrace buffer: [ 23.962457] (ftrace buffer empty) [ 23.966131] Kernel Offset: disabled [ 23.969733] Rebooting in 86400 seconds..