[....] Starting enhanced syslogd: rsyslogd[ 16.413007] audit: type=1400 audit(1520220619.363:5): avc: denied { syslog } for pid=4088 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 OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.440139] audit: type=1400 audit(1520220621.390:6): avc: denied { map } for pid=4226 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 '10.128.0.38' (ECDSA) to the list of known hosts. executing program [ 24.763879] audit: type=1400 audit(1520220627.714:7): avc: denied { map } for pid=4240 comm="syzkaller368873" path="/root/syzkaller368873889" 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 [ 30.175160] kasan: CONFIG_KASAN_INLINE enabled [ 30.179874] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.187273] general protection fault: 0000 [#1] SMP KASAN [ 30.192790] Dumping ftrace buffer: [ 30.196300] (ftrace buffer empty) [ 30.199982] Modules linked in: [ 30.203148] CPU: 1 PID: 4240 Comm: syzkaller368873 Not tainted 4.16.0-rc3+ #340 [ 30.210563] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.219896] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 30.224967] RSP: 0018:ffff8801b1d77cc8 EFLAGS: 00010206 [ 30.230299] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fc6f4 [ 30.237540] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 30.244779] RBP: ffff8801b1d77ce0 R08: 0000000000000000 R09: 1ffff100363aef15 [ 30.252022] R10: ffff8801b1d77870 R11: 0000000000000001 R12: ffff8801b11257d2 [ 30.259264] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b1d77d58 [ 30.266506] FS: 0000000001d03880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 30.274701] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.280555] CR2: 0000000001be35c8 CR3: 00000001ad917004 CR4: 00000000001606e0 [ 30.287797] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.295037] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.302279] Call Trace: [ 30.304861] smc_shutdown+0x3ed/0x540 [ 30.308656] SyS_shutdown+0x137/0x290 [ 30.312428] ? SyS_getsockopt+0x340/0x340 [ 30.316551] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 30.322060] ? do_syscall_64+0xb7/0x940 [ 30.326004] ? SyS_getsockopt+0x340/0x340 [ 30.330127] do_syscall_64+0x281/0x940 [ 30.333986] ? __do_page_fault+0xc90/0xc90 [ 30.338190] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.342913] ? syscall_return_slowpath+0x550/0x550 [ 30.347814] ? syscall_return_slowpath+0x2ac/0x550 [ 30.352720] ? prepare_exit_to_usermode+0x350/0x350 [ 30.357706] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 30.363047] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.367863] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 30.373027] RIP: 0033:0x43fcb9 [ 30.376187] RSP: 002b:00007ffe8a498d98 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 30.383871] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 30.391112] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 30.398351] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 30.405590] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 30.412829] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 30.420076] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 3c 3f 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 [ 30.439145] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b1d77cc8 [ 30.445759] ---[ end trace 7b17b45b8ebf8520 ]--- [ 30.450515] Kernel panic - not syncing: Fatal exception [ 30.456247] Dumping ftrace buffer: [ 30.459759] (ftrace buffer empty) [ 30.463441] Kernel Offset: disabled [ 30.467036] Rebooting in 86400 seconds..