[....] Starting enhanced syslogd: rsyslogd[ 12.732921] audit: type=1400 audit(1516457918.707:5): avc: denied { syslog } for pid=3501 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: [ 17.390621] audit: type=1400 audit(1516457923.365:6): avc: denied { map } for pid=3642 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 '10.128.15.204' (ECDSA) to the list of known hosts. [ 26.391142] audit: type=1400 audit(1516457932.365:7): avc: denied { map } for pid=3657 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/01/20 14:18:52 parsed 1 programs 2018/01/20 14:18:52 executed programs: 0 [ 26.617843] audit: type=1400 audit(1516457932.592:8): avc: denied { map } for pid=3657 comm="syz-execprog" path="/root/syzkaller-shm929535060" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 26.804322] audit: type=1400 audit(1516457932.778:9): avc: denied { sys_admin } for pid=3662 comm="syz-executor3" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 26.834480] audit: type=1400 audit(1516457932.809:10): avc: denied { sys_chroot } for pid=3672 comm="syz-executor3" capability=18 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 28.127064] kasan: CONFIG_KASAN_INLINE enabled [ 28.131684] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.139027] general protection fault: 0000 [#1] SMP KASAN [ 28.144547] Dumping ftrace buffer: [ 28.148053] (ftrace buffer empty) [ 28.151730] Modules linked in: [ 28.154894] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.15.0-rc8+ #270 [ 28.161530] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.170868] RIP: 0010:loopback_pos_update+0x182/0x1580 [ 28.176113] RSP: 0018:ffff8801db3076d8 EFLAGS: 00010006 [ 28.181446] RAX: dffffc0000000000 RBX: 000000000000001e RCX: ffffffff8427742d [ 28.188685] RDX: 0000000000000009 RSI: 00000000cf575c05 RDI: 0000000000000048 [ 28.195928] RBP: ffff8801db307768 R08: 1ffff1003b660e2d R09: 000000000000000c [ 28.203170] R10: ffff8801db307628 R11: 0000000000000024 R12: 0000000000000000 [ 28.210412] R13: 00000000fffbda00 R14: 1ffffffff0d01200 R15: 0000000000000000 [ 28.217657] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 28.225851] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.231703] CR2: 00007f9f1af6bdb8 CR3: 0000000006822004 CR4: 00000000001606e0 [ 28.238943] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.246182] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.253427] Call Trace: [ 28.255981] [ 28.258116] loopback_timer_function+0x6d/0x277 [ 28.262760] call_timer_fn+0x228/0x820 [ 28.266628] ? loopback_pointer+0x1a0/0x1a0 [ 28.270922] ? process_timeout+0x40/0x40 [ 28.274955] ? __run_timers+0x7e3/0xb70 [ 28.278902] ? lock_downgrade+0x980/0x980 [ 28.283030] ? debug_object_deactivate+0x364/0x560 [ 28.287930] ? lock_release+0xa40/0xa40 [ 28.291877] ? do_raw_spin_trylock+0x190/0x190 [ 28.296439] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 28.301430] ? loopback_pointer+0x1a0/0x1a0 [ 28.305721] ? loopback_pointer+0x1a0/0x1a0 [ 28.310015] __run_timers+0x7ee/0xb70 [ 28.313790] ? _raw_spin_unlock_irqrestore+0xa6/0xba [ 28.318870] ? trigger_dyntick_cpu.isra.29+0x180/0x180 [ 28.324115] ? check_noncircular+0x20/0x20 [ 28.328328] ? timerqueue_add+0x1e9/0x280 [ 28.332452] ? enqueue_hrtimer+0x171/0x4a0 [ 28.336659] ? __remove_hrtimer+0x190/0x190 [ 28.340952] ? find_held_lock+0x35/0x1d0 [ 28.344989] ? clockevents_program_event+0x163/0x2e0 [ 28.350064] ? lock_downgrade+0x980/0x980 [ 28.354188] ? rcu_pm_notify+0xc0/0xc0 [ 28.358049] run_timer_softirq+0x4c/0x70 [ 28.362086] __do_softirq+0x2d7/0xb85 [ 28.365871] ? lock_downgrade+0x980/0x980 [ 28.369991] ? __irqentry_text_end+0x1f8cf4/0x1f8cf4 [ 28.375069] ? do_timer+0x50/0x50 [ 28.378492] ? native_apic_msr_write+0x5c/0x80 [ 28.383052] ? do_raw_spin_trylock+0x190/0x190 [ 28.387610] ? lapic_next_event+0x54/0x80 [ 28.391730] ? clockevents_program_event+0x108/0x2e0 [ 28.396805] ? tick_program_event+0x83/0x100 [ 28.401186] ? hrtimer_interrupt+0x46e/0x5e0 [ 28.405571] ? rcu_pm_notify+0xc0/0xc0 [ 28.409434] irq_exit+0x1cc/0x200 [ 28.412858] smp_apic_timer_interrupt+0x16b/0x700 [ 28.417669] ? smp_reschedule_interrupt+0xe6/0x670 [ 28.422567] ? smp_call_function_single_interrupt+0x640/0x640 [ 28.428425] ? _raw_spin_lock+0x32/0x40 [ 28.432375] ? _raw_spin_unlock+0x22/0x30 [ 28.436500] ? handle_edge_irq+0x2b4/0x7c0 [ 28.440710] ? task_prio+0x40/0x40 [ 28.444225] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.449062] ? tick_nohz_idle_enter+0x120/0x220 [ 28.453704] apic_timer_interrupt+0xa9/0xb0 [ 28.457994] [ 28.460209] RIP: 0010:native_safe_halt+0x6/0x10 [ 28.464843] RSP: 0018:ffff8801d9f77cb0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff11 [ 28.472532] RAX: dffffc0000000000 RBX: 1ffff1003b3eef99 RCX: 0000000000000000 [ 28.479780] RDX: 1ffffffff0d19190 RSI: 0000000000000001 RDI: ffffffff868c8c80 [ 28.487025] RBP: ffff8801d9f77cb0 R08: ffffffff8163d8e0 R09: 0000000000000000 [ 28.494266] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 28.501507] R13: ffff8801d9f77d68 R14: ffffffff870386e0 R15: 0000000000000000 [ 28.508760] ? tick_nohz_idle_enter+0x120/0x220 [ 28.513413] default_idle+0xbf/0x460 [ 28.517103] ? __sched_text_end+0x4/0x4 [ 28.521057] ? tick_nohz_idle_enter+0x125/0x220 [ 28.525699] arch_cpu_idle+0xa/0x10 [ 28.529316] default_idle_call+0x36/0x90 [ 28.533359] do_idle+0x24a/0x3b0 [ 28.536702] cpu_startup_entry+0x104/0x120 [ 28.540910] ? cpu_in_idle+0x20/0x20 [ 28.544602] start_secondary+0x40a/0x590 [ 28.548638] ? set_cpu_sibling_map+0x1660/0x1660 [ 28.553373] secondary_startup_64+0xa5/0xb0 [ 28.557671] 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 a5 1b 59 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 [ 28.576744] RIP: loopback_pos_update+0x182/0x1580 RSP: ffff8801db3076d8 [ 28.583472] ---[ end trace 11512089c286a17d ]--- [ 28.588206] Kernel panic - not syncing: Fatal exception in interrupt [ 28.595160] Dumping ftrace buffer: [ 28.598674] (ftrace buffer empty) [ 28.602353] Kernel Offset: disabled [ 28.605955] Rebooting in 86400 seconds..