[....] Starting enhanced syslogd: rsyslogd[ 15.577320] audit: type=1400 audit(1521205375.767:5): avc: denied { syslog } for pid=4073 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: [ 18.906836] audit: type=1400 audit(1521205379.096:6): avc: denied { map } for pid=4212 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 '10.128.10.21' (ECDSA) to the list of known hosts. executing program [ 37.911370] audit: type=1400 audit(1521205398.101:7): avc: denied { map } for pid=4229 comm="syzkaller854829" path="/root/syzkaller854829937" 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 [ 42.975120] kasan: CONFIG_KASAN_INLINE enabled [ 42.979812] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.987335] general protection fault: 0000 [#1] SMP KASAN [ 42.992844] Dumping ftrace buffer: [ 42.996351] (ftrace buffer empty) [ 43.000031] Modules linked in: [ 43.003197] CPU: 1 PID: 4229 Comm: syzkaller854829 Not tainted 4.16.0-rc5+ #356 [ 43.010611] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.019943] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 43.025012] RSP: 0018:ffff8801b92ffcc8 EFLAGS: 00010206 [ 43.030344] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 43.037590] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 43.044845] RBP: ffff8801b92ffce0 R08: 0000000000000000 R09: 1ffff1003725ff15 [ 43.052086] R10: ffff8801b92ff870 R11: 0000000000000001 R12: ffff8801b4c817d2 [ 43.059327] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b92ffd58 [ 43.066578] FS: 000000000134e880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 43.074772] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.080624] CR2: ffffffffff600400 CR3: 00000001b3f94001 CR4: 00000000001606e0 [ 43.088445] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.095685] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.102923] Call Trace: [ 43.105487] smc_shutdown+0x3ed/0x540 [ 43.109263] SyS_shutdown+0x137/0x290 [ 43.113036] ? SyS_getsockopt+0x340/0x340 [ 43.117159] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 43.122667] ? do_syscall_64+0xb7/0x940 [ 43.126609] ? SyS_getsockopt+0x340/0x340 [ 43.130727] do_syscall_64+0x281/0x940 [ 43.134584] ? __do_page_fault+0xc90/0xc90 [ 43.138789] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 43.144307] ? syscall_return_slowpath+0x550/0x550 [ 43.149207] ? syscall_return_slowpath+0x2ac/0x550 [ 43.154107] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 43.159440] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.164256] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 43.169413] RIP: 0033:0x43fcb9 [ 43.172572] RSP: 002b:00007ffc9af595c8 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 43.180246] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 43.187485] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 43.194726] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 43.201963] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 43.209201] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 43.216446] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac 20 11 fd 48 8d 7b 28 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 32 4c 8b 63 28 48 b8 00 00 00 00 00 fc ff df 49 [ 43.235515] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b92ffcc8 [ 43.242129] ---[ end trace 5f9f759d1a2225c6 ]--- [ 43.246873] Kernel panic - not syncing: Fatal exception [ 43.252590] Dumping ftrace buffer: [ 43.256101] (ftrace buffer empty) [ 43.259781] Kernel Offset: disabled [ 43.263378] Rebooting in 86400 seconds..