[....] Starting enhanced syslogd: rsyslogd[ 13.670745] audit: type=1400 audit(1515739070.962:5): avc: denied { syslog } for pid=3387 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: [ 18.898979] audit: type=1400 audit(1515739076.190:6): avc: denied { map } for pid=3527 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 '10.128.0.45' (ECDSA) to the list of known hosts. [ 25.159063] audit: type=1400 audit(1515739082.450:7): avc: denied { map } for pid=3542 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 2018/01/12 06:38:02 parsed 1 programs 2018/01/12 06:38:02 executed programs: 0 [ 25.295332] audit: type=1400 audit(1515739082.585:8): avc: denied { map } for pid=3542 comm="syz-execprog" path="/root/syzkaller-shm132791188" 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 [ 25.488528] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 26.119831] kasan: CONFIG_KASAN_INLINE enabled [ 26.124813] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 26.132187] general protection fault: 0000 [#1] SMP KASAN [ 26.137703] Dumping ftrace buffer: [ 26.141215] (ftrace buffer empty) [ 26.144905] Modules linked in: [ 26.148078] CPU: 0 PID: 3549 Comm: syz-executor0 Not tainted 4.15.0-rc7+ #258 [ 26.155322] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.164664] RIP: 0010:native_write_cr4+0x4/0x10 [ 26.169303] RSP: 0018:ffff8801db207ca8 EFLAGS: 00010006 [ 26.174639] RAX: ffff8801be2e40c0 RBX: 00000000001606f0 RCX: ffffffff811a32c2 [ 26.181885] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 26.189158] RBP: ffff8801db207ca8 R08: 0000000000000001 R09: 000000000234f940 [ 26.196426] R10: ffff8801bdc67f28 R11: ffff8801be2e40c0 R12: 0000000000000006 [ 26.203850] R13: ffff8801be2e40c0 R14: ffff8801db21d130 R15: ffff8801db21d130 [ 26.211099] FS: 000000000234f940(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 26.219314] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.225174] CR2: 00007f1c4cb42000 CR3: 00000001bde1d003 CR4: 00000000001626f0 [ 26.232428] Call Trace: [ 26.234988] [ 26.237191] hardware_disable+0x34a/0x4b0 [ 26.241404] ? irq_work_sync+0x1a0/0x1a0 [ 26.245436] ? lock_downgrade+0x980/0x980 [ 26.249571] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 26.254072] kvm_arch_hardware_disable+0x35/0xd0 [ 26.259239] hardware_disable_nolock+0x30/0x40 [ 26.264033] flush_smp_call_function_queue+0x1f4/0x570 [ 26.269292] ? cpumask_weight+0x40/0x40 [ 26.273267] ? tick_program_event+0x83/0x100 [ 26.277674] ? rcu_pm_notify+0xc0/0xc0 [ 26.281542] generic_smp_call_function_single_interrupt+0x13/0x30 [ 26.287789] smp_call_function_single_interrupt+0x103/0x640 [ 26.293513] ? smp_call_function_interrupt+0x640/0x640 [ 26.298790] ? _raw_spin_lock+0x32/0x40 [ 26.302750] ? _raw_spin_unlock+0x22/0x30 [ 26.306889] ? handle_edge_irq+0x2b4/0x7c0 [ 26.311140] ? task_prio+0x40/0x40 [ 26.314684] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.319508] call_function_single_interrupt+0xa9/0xb0 [ 26.324681] [ 26.326900] RIP: 0010:do_wait+0x85a/0xa70 [ 26.331021] RSP: 0018:ffff8801bdc67b58 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff04 [ 26.338721] RAX: ffff8801be2e40c0 RBX: 1ffff10037b8cf94 RCX: ffffffff81424893 [ 26.345966] RDX: 0000000000000000 RSI: 00007ffed8fb4a9c RDI: ffff8801be2e4934 [ 26.353220] RBP: ffff8801bdc67d08 R08: 0000000000000001 R09: 000000000234f940 [ 26.360567] R10: ffff8801bdc67f28 R11: ffff8801be2e40c0 R12: 0000000000000000 [ 26.367838] R13: ffff8801bdc67d48 R14: 0000000000000000 R15: ffff8801bdc67d48 [ 26.375162] ? do_wait+0x853/0xa70 [ 26.378681] ? do_wait+0x853/0xa70 [ 26.382282] ? wait_consider_task+0x3420/0x3420 [ 26.387029] ? do_raw_spin_trylock+0x190/0x190 [ 26.391599] ? find_held_lock+0x35/0x1d0 [ 26.395641] ? __might_fault+0x110/0x1d0 [ 26.399679] ? lock_downgrade+0x980/0x980 [ 26.403805] kernel_wait4+0x1f5/0x370 [ 26.407586] ? SyS_waitid+0x50/0x50 [ 26.411198] ? __might_sleep+0x95/0x190 [ 26.415163] SYSC_wait4+0x134/0x140 [ 26.419973] ? kernel_wait4+0x370/0x370 [ 26.423934] ? put_timespec64+0xfc/0x180 [ 26.427993] ? nsecs_to_jiffies+0x30/0x30 [ 26.432166] ? entry_SYSCALL_64_fastpath+0x5/0x9a [ 26.437019] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.442016] SyS_wait4+0x2c/0x40 [ 26.445356] ? SyS_wait4+0x2c/0x40 [ 26.448892] entry_SYSCALL_64_fastpath+0x23/0x9a [ 26.453619] RIP: 0033:0x40ce4a [ 26.456781] RSP: 002b:00007ffed8fb4a78 EFLAGS: 00000246 ORIG_RAX: 000000000000003d [ 26.464460] RAX: ffffffffffffffda RBX: 000000000234f914 RCX: 000000000040ce4a [ 26.471701] RDX: 0000000040000001 RSI: 00007ffed8fb4a9c RDI: ffffffffffffffff [ 26.478947] RBP: 0000000000000030 R08: 0000000000000001 R09: 000000000234f940 [ 26.486205] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 26.493470] R13: 0000000000000014 R14: 00000000000065db R15: 0000000000000001 [ 26.500812] 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 [ 26.519922] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db207ca8 [ 26.526052] ---[ end trace a11fc460e739cdc6 ]--- [ 26.530795] Kernel panic - not syncing: Fatal exception in interrupt [ 26.537347] Dumping ftrace buffer: [ 26.540911] (ftrace buffer empty) [ 26.544679] Kernel Offset: disabled [ 26.548298] Rebooting in 86400 seconds..