[....] Starting enhanced syslogd: rsyslogd[ 16.844257] audit: type=1400 audit(1521039334.070:5): avc: denied { syslog } for pid=4092 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: [ 19.069682] audit: type=1400 audit(1521039336.295:6): avc: denied { map } for pid=4230 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 '10.128.0.62' (ECDSA) to the list of known hosts. executing program [ 31.361976] audit: type=1400 audit(1521039348.587:7): avc: denied { map } for pid=4245 comm="syzkaller279179" path="/root/syzkaller279179170" 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 [ 36.832136] kasan: CONFIG_KASAN_INLINE enabled [ 36.836974] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 36.844391] general protection fault: 0000 [#1] SMP KASAN [ 36.849905] Dumping ftrace buffer: [ 36.853413] (ftrace buffer empty) [ 36.857092] Modules linked in: [ 36.860258] CPU: 0 PID: 4245 Comm: syzkaller279179 Not tainted 4.16.0-rc5+ #352 [ 36.867672] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.877003] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 36.882071] RSP: 0018:ffff8801b27a7cc8 EFLAGS: 00010206 [ 36.887413] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 36.894653] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 36.901893] RBP: ffff8801b27a7ce0 R08: 0000000000000000 R09: 1ffff100364f4f15 [ 36.909131] R10: ffff8801b27a7870 R11: 0000000000000001 R12: ffff8801da4907d2 [ 36.916371] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b27a7d58 [ 36.923611] FS: 0000000001d80880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 36.931815] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.937667] CR2: 0000000000febe40 CR3: 00000001b1159003 CR4: 00000000001606f0 [ 36.944921] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.952177] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.959434] Call Trace: [ 36.962007] smc_shutdown+0x3ed/0x540 [ 36.965779] SyS_shutdown+0x137/0x290 [ 36.969549] ? SyS_getsockopt+0x340/0x340 [ 36.973670] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 36.979179] ? do_syscall_64+0xb7/0x940 [ 36.983125] ? SyS_getsockopt+0x340/0x340 [ 36.987241] do_syscall_64+0x281/0x940 [ 36.991106] ? __do_page_fault+0xc90/0xc90 [ 36.995308] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 37.000043] ? syscall_return_slowpath+0x550/0x550 [ 37.004942] ? syscall_return_slowpath+0x2ac/0x550 [ 37.009838] ? prepare_exit_to_usermode+0x350/0x350 [ 37.014825] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 37.020159] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.024972] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 37.030128] RIP: 0033:0x43fce9 [ 37.033290] RSP: 002b:00007ffd2500e5b8 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 37.040967] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fce9 [ 37.048204] RDX: 000000000043fce9 RSI: 0000000000000000 RDI: 0000000000000003 [ 37.055444] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 37.062682] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401610 [ 37.069921] R13: 00000000004016a0 R14: 0000000000000000 R15: 0000000000000000 [ 37.077187] 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 [ 37.096286] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b27a7cc8 [ 37.102889] ---[ end trace 55fdd0ac30e3ea0c ]--- [ 37.107632] Kernel panic - not syncing: Fatal exception [ 37.113346] Dumping ftrace buffer: [ 37.116855] (ftrace buffer empty) [ 37.120536] Kernel Offset: disabled [ 37.124141] Rebooting in 86400 seconds..