[....] Starting enhanced syslogd: rsyslogd[ 15.385790] audit: type=1400 audit(1519871758.328:5): avc: denied { syslog } for pid=4053 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: [ 20.190524] audit: type=1400 audit(1519871763.133:6): avc: denied { map } for pid=4193 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 '10.128.0.7' (ECDSA) to the list of known hosts. executing program [ 26.456177] audit: type=1400 audit(1519871769.399:7): avc: denied { map } for pid=4207 comm="syzkaller158079" path="/root/syzkaller158079776" 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 [ 31.712758] kasan: CONFIG_KASAN_INLINE enabled [ 31.717566] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 31.725154] general protection fault: 0000 [#1] SMP KASAN [ 31.730673] Dumping ftrace buffer: [ 31.734181] (ftrace buffer empty) [ 31.737859] Modules linked in: [ 31.741029] CPU: 0 PID: 4207 Comm: syzkaller158079 Not tainted 4.16.0-rc3+ #333 [ 31.748446] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.757773] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 31.762844] RSP: 0018:ffff8801b691fcc8 EFLAGS: 00010206 [ 31.768176] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fb6f4 [ 31.775416] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 31.782655] RBP: ffff8801b691fce0 R08: 0000000000000000 R09: 1ffff10036d23f15 [ 31.789894] R10: ffff8801b691f870 R11: 0000000000000001 R12: ffff8801b75b47d2 [ 31.797135] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b691fd58 [ 31.804376] FS: 000000000237b880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 31.812576] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.818428] CR2: 000000000235fa80 CR3: 00000001b6873006 CR4: 00000000001606f0 [ 31.825668] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.832906] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.840142] Call Trace: [ 31.842707] smc_shutdown+0x3ed/0x540 [ 31.846479] SyS_shutdown+0x137/0x290 [ 31.850249] ? SyS_getsockopt+0x340/0x340 [ 31.854369] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 31.859874] ? do_syscall_64+0xb7/0x940 [ 31.863819] ? SyS_getsockopt+0x340/0x340 [ 31.868026] do_syscall_64+0x281/0x940 [ 31.871887] ? __do_page_fault+0xc90/0xc90 [ 31.876091] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 31.880816] ? syscall_return_slowpath+0x550/0x550 [ 31.885713] ? syscall_return_slowpath+0x2ac/0x550 [ 31.890611] ? prepare_exit_to_usermode+0x350/0x350 [ 31.895603] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 31.900940] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.905754] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 31.910911] RIP: 0033:0x43fcb9 [ 31.914071] RSP: 002b:00007fffec933618 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 31.921747] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 31.928988] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 31.936234] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 31.943473] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 31.950713] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 31.957961] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 4c 3d 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 [ 31.977524] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b691fcc8 [ 31.984120] ---[ end trace fa57032682affede ]--- [ 31.988867] Kernel panic - not syncing: Fatal exception [ 31.994722] Dumping ftrace buffer: [ 31.998254] (ftrace buffer empty) [ 32.001935] Kernel Offset: disabled [ 32.005532] Rebooting in 86400 seconds..