[....] Starting enhanced syslogd: rsyslogd[ 13.044930] audit: type=1400 audit(1516464884.856:5): avc: denied { syslog } for pid=3512 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: [ 19.231200] audit: type=1400 audit(1516464891.042:6): avc: denied { map } for pid=3651 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 '10.128.15.239' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program [ 95.551190] audit: type=1400 audit(1516464967.362:7): avc: denied { map } for pid=3668 comm="syzkaller466943" path="/root/syzkaller466943411" 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 executing program executing program executing program [ 149.522982] audit: type=1400 audit(1516465021.334:8): avc: denied { map } for pid=3735 comm="sh" path="/bin/dash" dev="sda1" ino=1473 scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 283.495065] kasan: CONFIG_KASAN_INLINE enabled [ 283.499765] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 283.507113] general protection fault: 0000 [#1] SMP KASAN [ 283.512919] Dumping ftrace buffer: [ 283.516428] (ftrace buffer empty) [ 283.520135] Modules linked in: [ 283.523304] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-rc8-mm1+ #59 [ 283.530199] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 283.539543] RIP: 0010:loopback_pos_update+0x182/0x1580 [ 283.544795] RSP: 0018:ffff8801db2076d8 EFLAGS: 00010006 [ 283.550135] RAX: dffffc0000000000 RBX: 0000000000000147 RCX: ffffffff842d37dd [ 283.557386] RDX: 0000000000000009 RSI: 00000000a8c1b747 RDI: 0000000000000048 [ 283.564636] RBP: ffff8801db207768 R08: 1ffff1003b640e2d R09: 000000000000000c [ 283.571878] R10: ffff8801db207628 R11: 0000000000000024 R12: 0000000000000000 [ 283.579129] R13: 00000000ffffbf88 R14: 1ffffffff0d01200 R15: 0000000000000000 [ 283.586372] FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 283.594575] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 283.600434] CR2: 000000002054bff0 CR3: 0000000006822002 CR4: 00000000001606f0 [ 283.607678] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 283.614917] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 283.622158] Call Trace: [ 283.624710] [ 283.626849] loopback_timer_function+0x6d/0x277 [ 283.631493] call_timer_fn+0x228/0x820 [ 283.635361] ? loopback_pointer+0x1a0/0x1a0 [ 283.639753] ? process_timeout+0x40/0x40 [ 283.643784] ? __run_timers+0x7e3/0xb70 [ 283.647748] ? lock_downgrade+0x980/0x980 [ 283.651881] ? debug_object_deactivate+0x364/0x560 [ 283.656791] ? lock_release+0xa40/0xa40 [ 283.660760] ? do_raw_spin_trylock+0x190/0x190 [ 283.665339] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 283.670343] ? loopback_pointer+0x1a0/0x1a0 [ 283.674644] ? loopback_pointer+0x1a0/0x1a0 [ 283.678950] __run_timers+0x7ee/0xb70 [ 283.682737] ? trigger_dyntick_cpu.isra.29+0x160/0x160 [ 283.687990] ? timerqueue_add+0x1e9/0x280 [ 283.692136] ? check_noncircular+0x20/0x20 [ 283.696343] ? enqueue_hrtimer+0x177/0x4b0 [ 283.700548] ? lock_release+0xa40/0xa40 [ 283.704493] ? retrigger_next_event+0x1e0/0x1e0 [ 283.709139] ? find_held_lock+0x35/0x1d0 [ 283.713175] ? clockevents_program_event+0x163/0x2e0 [ 283.718250] ? lock_downgrade+0x980/0x980 [ 283.722371] ? rcu_pm_notify+0xc0/0xc0 [ 283.726245] run_timer_softirq+0x4c/0x70 [ 283.730280] __do_softirq+0x2d7/0xb85 [ 283.734050] ? ktime_get+0x26f/0x3a0 [ 283.737740] ? __irqentry_text_end+0x1f8cf4/0x1f8cf4 [ 283.742817] ? do_timer+0x50/0x50 [ 283.746242] ? native_apic_msr_write+0x5c/0x80 [ 283.750802] ? lapic_next_event+0x54/0x80 [ 283.754943] ? clockevents_program_event+0x108/0x2e0 [ 283.760027] ? tick_program_event+0x83/0x100 [ 283.764415] ? rcu_pm_notify+0xc0/0xc0 [ 283.768278] irq_exit+0x1cc/0x200 [ 283.771701] smp_apic_timer_interrupt+0x16b/0x700 [ 283.776512] ? smp_reschedule_interrupt+0xe6/0x670 [ 283.781411] ? smp_call_function_single_interrupt+0x640/0x640 [ 283.787269] ? _raw_spin_lock+0x32/0x40 [ 283.791226] ? _raw_spin_unlock+0x22/0x30 [ 283.795344] ? handle_edge_irq+0x2b4/0x7c0 [ 283.799548] ? task_prio+0x40/0x40 [ 283.803072] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 283.807907] apic_timer_interrupt+0xa9/0xb0 [ 283.812212] [ 283.814442] RIP: 0010:native_safe_halt+0x6/0x10 [ 283.819084] RSP: 0018:ffffffff86807c38 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff11 [ 283.826768] RAX: dffffc0000000000 RBX: 1ffffffff0d00f8a RCX: 0000000000000000 [ 283.834011] RDX: 1ffffffff0d192a0 RSI: 0000000000000001 RDI: ffffffff868c9500 [ 283.841259] RBP: ffffffff86807c38 R08: 0000000000000000 R09: 0000000000000000 [ 283.848595] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 283.855832] R13: ffffffff86807cf0 R14: ffffffff87044ae0 R15: 0000000000000000 [ 283.863097] ? trace_hardirqs_on+0xd/0x10 [ 283.867218] default_idle+0xbf/0x430 [ 283.870903] ? __sched_text_end+0x4/0x4 [ 283.874862] ? rcu_eqs_special_set+0x1e0/0x1e0 [ 283.879424] ? tsc_verify_tsc_adjust+0xf6/0x3e0 [ 283.884066] ? set_cpu_sd_state_idle+0x1dc/0x2d0 [ 283.888792] ? mark_tsc_async_resets+0x30/0x30 [ 283.893357] arch_cpu_idle+0xa/0x10 [ 283.896964] default_idle_call+0x36/0x90 [ 283.900996] do_idle+0x24a/0x3b0 [ 283.904335] cpu_startup_entry+0x104/0x120 [ 283.908549] ? cpu_in_idle+0x20/0x20 [ 283.912230] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 283.917218] ? trace_hardirqs_on+0xd/0x10 [ 283.921349] rest_init+0xed/0xf0 [ 283.924688] start_kernel+0x7f1/0x819 [ 283.928470] ? mem_encrypt_init+0xb/0xb [ 283.932422] ? early_idt_handler_common+0x3b/0x60 [ 283.937245] ? x86_family+0x32/0x40 [ 283.940843] x86_64_start_reservations+0x2a/0x2c [ 283.945569] x86_64_start_kernel+0x77/0x7a [ 283.949776] secondary_startup_64+0xa5/0xb0 [ 283.954083] Code: 00 fc ff df 41 80 3c 06 00 0f 85 e0 11 00 00 49 8d 7f 48 48 b8 00 00 00 00 00 fc ff df 4c 8b 2d f5 57 53 02 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 b0 11 00 00 4d 89 ec 4d 2b 67 48 4d 89 6f 48 [ 283.973156] RIP: loopback_pos_update+0x182/0x1580 RSP: ffff8801db2076d8 [ 283.979895] ---[ end trace 78a3baf5bb92aa31 ]--- [ 283.984620] Kernel panic - not syncing: Fatal exception in interrupt [ 283.991460] Dumping ftrace buffer: [ 283.994969] (ftrace buffer empty) [ 283.998649] Kernel Offset: disabled [ 284.002247] Rebooting in 86400 seconds..