[....] Starting enhanced syslogd: rsyslogd[ 17.441462] audit: type=1400 audit(1517227018.103:5): avc: denied { syslog } for pid=4018 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: [ 23.262654] audit: type=1400 audit(1517227023.924:6): avc: denied { map } for pid=4160 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 '10.128.15.229' (ECDSA) to the list of known hosts. executing program [ 29.695316] audit: type=1400 audit(1517227030.357:7): avc: denied { map } for pid=4174 comm="syzkaller085651" path="/root/syzkaller085651998" 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 [ 29.729696] *** Guest State *** [ 29.733040] CR0: actual=0x0000000080000039, shadow=0x0000000080000019, gh_mask=fffffffffffffff7 [ 29.741895] CR4: actual=0x00000000000021e0, shadow=0x00000000000001a0, gh_mask=ffffffffffffe871 [ 29.750887] CR3 = 0x0000000000000000 [ 29.754634] RSP = 0x0000000000000000 RIP = 0x000000000000fff0 [ 29.760628] RFLAGS=0x00000002 DR7 = 0x0000000000000400 [ 29.766606] Sysenter RSP=0000000000000000 CS:RIP=0000:0000000000000000 [ 29.773280] CS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 [ 29.781263] DS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 [ 29.789237] SS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 [ 29.797219] ES: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 [ 29.805191] FS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 [ 29.813178] GS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 [ 29.821146] GDTR: limit=0x00000000, base=0x0000000000000000 [ 29.829128] LDTR: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 [ 29.837097] IDTR: limit=0x00000000, base=0x0000000000000000 [ 29.845087] TR: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 [ 29.853066] EFER = 0xfffffffffffffffc PAT = 0x0007040600070406 [ 29.859482] DebugCtl = 0x0000000000000000 DebugExceptions = 0x0000000000000000 [ 29.866936] Interruptibility = 00000000 ActivityState = 00000000 [ 29.873168] *** Host State *** [ 29.876360] RIP = 0xffffffff811be024 RSP = 0xffff8801b23bf3d8 [ 29.882349] CS=0010 SS=0018 DS=0000 ES=0000 FS=0000 GS=0000 TR=0040 [ 29.888761] FSBase=0000000000000000 GSBase=ffff8801db500000 TRBase=fffffe0000034000 [ 29.896567] GDTBase=fffffe0000032000 IDTBase=fffffe0000000000 [ 29.902454] CR0=0000000080050033 CR3=00000001b26d0006 CR4=00000000001626e0 [ 29.909647] Sysenter RSP=fffffe0000033200 CS:RIP=0010:ffffffff85a01bb0 [ 29.916328] EFER = 0x0000000000000d01 PAT = 0x0000000000000000 [ 29.922384] *** Control State *** [ 29.925836] PinBased=0000003f CPUBased=b6986dfa SecondaryExec=000000c2 [ 29.932498] EntryControls=0000d3ff ExitControls=0023efff [ 29.937956] ExceptionBitmap=00060042 PFECmask=00000000 PFECmatch=00000000 [ 29.944886] VMEntry: intr_info=00000000 errcode=00000000 ilen=00000000 [ 29.951557] VMExit: intr_info=00000000 errcode=00000000 ilen=00000000 [ 29.958134] reason=80000021 qualification=0000000000000000 [ 29.964453] IDTVectoring: info=00000000 errcode=00000000 [ 29.969899] TSC Offset = 0xffffffed784713d8 [ 29.974222] EPT pointer = 0x00000001b1c3501e [ 29.984389] kasan: CONFIG_KASAN_INLINE enabled [ 29.988977] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.996308] general protection fault: 0000 [#1] SMP KASAN [ 30.001814] Dumping ftrace buffer: [ 30.005322] (ftrace buffer empty) [ 30.009005] Modules linked in: [ 30.012172] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.15.0+ #195 [ 30.018459] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.027790] RIP: 0010:native_write_cr4+0x4/0x10 [ 30.032424] RSP: 0018:ffff8801db507ca8 EFLAGS: 00010006 [ 30.037755] RAX: ffff8801d9f10300 RBX: 00000000001606e0 RCX: ffffffff811a3202 [ 30.044999] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606e0 [ 30.052240] RBP: ffff8801db507ca8 R08: 0000000000000001 R09: ffff88021fff8048 [ 30.059479] R10: ffff88021fff8050 R11: ffff88021fff805d R12: 0000000000000006 [ 30.066721] R13: ffff8801d9f10300 R14: ffff8801db51d130 R15: ffff8801db51d130 [ 30.073960] FS: 0000000000000000(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 30.082153] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.088004] CR2: 00007f42b4252000 CR3: 0000000006a22002 CR4: 00000000001626e0 [ 30.095249] Call Trace: [ 30.097803] [ 30.099927] hardware_disable+0x34a/0x4b0 [ 30.104047] ? pvclock_read_flags+0x160/0x160 [ 30.108517] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 30.112993] kvm_arch_hardware_disable+0x35/0xd0 [ 30.117725] hardware_disable_nolock+0x30/0x40 [ 30.122280] flush_smp_call_function_queue+0x1f4/0x570 [ 30.127530] ? cpumask_weight+0x40/0x40 [ 30.131477] ? nr_iowait+0x210/0x210 [ 30.135161] ? tick_program_event+0x83/0x100 [ 30.139542] ? rcu_pm_notify+0xc0/0xc0 [ 30.143405] generic_smp_call_function_single_interrupt+0x13/0x30 [ 30.149606] smp_call_function_single_interrupt+0x103/0x640 [ 30.155297] ? smp_call_function_interrupt+0x640/0x640 [ 30.160543] ? _raw_spin_lock+0x32/0x40 [ 30.164487] ? _raw_spin_unlock+0x22/0x30 [ 30.168607] ? handle_edge_irq+0x2b4/0x7c0 [ 30.172812] ? task_prio+0x40/0x40 [ 30.176328] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.181142] ? tick_nohz_idle_enter+0x120/0x220 [ 30.185785] call_function_single_interrupt+0xa9/0xb0 [ 30.190941] [ 30.193149] RIP: 0010:native_safe_halt+0x6/0x10 [ 30.197784] RSP: 0018:ffff8801d9f1fcb0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff04 [ 30.205464] RAX: dffffc0000000000 RBX: 1ffff1003b3e3f99 RCX: 0000000000000000 [ 30.212703] RDX: 1ffffffff0d59198 RSI: 0000000000000001 RDI: ffffffff86ac8cc0 [ 30.219941] RBP: ffff8801d9f1fcb0 R08: ffffffff8163da00 R09: 0000000000000000 [ 30.227182] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 30.234422] R13: ffff8801d9f1fd68 R14: ffffffff8725b4e0 R15: 0000000000000000 [ 30.241670] ? tick_nohz_idle_enter+0x120/0x220 [ 30.246311] default_idle+0xbf/0x460 [ 30.249994] ? __sched_text_end+0x4/0x4 [ 30.253958] arch_cpu_idle+0xa/0x10 [ 30.257559] default_idle_call+0x36/0x90 [ 30.261593] do_idle+0x24a/0x3b0 [ 30.264930] ? complete+0x62/0x80 [ 30.268359] cpu_startup_entry+0x104/0x120 [ 30.272565] ? cpu_in_idle+0x20/0x20 [ 30.276255] start_secondary+0x40a/0x590 [ 30.280288] ? set_cpu_sibling_map+0x1660/0x1660 [ 30.285020] secondary_startup_64+0xa5/0xb0 [ 30.289318] 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 [ 30.308406] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db507ca8 [ 30.314526] ---[ end trace fb6a8b01a75ea8cb ]--- [ 30.319249] Kernel panic - not syncing: Fatal exception in interrupt [ 30.326203] Dumping ftrace buffer: [ 30.329715] (ftrace buffer empty) [ 30.333566] Kernel Offset: disabled [ 30.337160] Rebooting in 86400 seconds..