[....] Starting enhanced syslogd: rsyslogd[ 16.676092] audit: type=1400 audit(1520484951.966:5): avc: denied { syslog } for pid=4080 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: [ 22.205348] audit: type=1400 audit(1520484957.496:6): avc: denied { map } for pid=4221 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 '10.128.0.12' (ECDSA) to the list of known hosts. executing program [ 40.893473] audit: type=1400 audit(1520484976.184:7): avc: denied { map } for pid=4237 comm="syzkaller537249" path="/root/syzkaller537249070" 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 [ 46.048718] kasan: CONFIG_KASAN_INLINE enabled [ 46.053374] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 46.060738] general protection fault: 0000 [#1] SMP KASAN [ 46.066243] Dumping ftrace buffer: [ 46.069747] (ftrace buffer empty) [ 46.073424] Modules linked in: [ 46.076588] CPU: 0 PID: 4237 Comm: syzkaller537249 Not tainted 4.16.0-rc4+ #255 [ 46.084000] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.093333] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 46.098400] RSP: 0018:ffff8801b0357c78 EFLAGS: 00010206 [ 46.103729] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fd6f4 [ 46.110968] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 46.118205] RBP: ffff8801b0357c90 R08: 0000000000000000 R09: 1ffff1003606af0b [ 46.125442] R10: ffff8801b0357820 R11: 0000000000000001 R12: ffff8801b198f7d2 [ 46.132678] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b0357d08 [ 46.139917] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000008bad840 [ 46.148112] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 46.153962] CR2: 000055d87cd3f0f0 CR3: 00000001b0076003 CR4: 00000000001606f0 [ 46.161203] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.168441] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.175678] Call Trace: [ 46.178236] smc_shutdown+0x3ed/0x540 [ 46.182005] SyS_shutdown+0x137/0x290 [ 46.185773] ? SyS_getsockopt+0x340/0x340 [ 46.189891] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 46.195397] ? do_fast_syscall_32+0x156/0xf9f [ 46.199863] ? SyS_getsockopt+0x340/0x340 [ 46.203981] do_fast_syscall_32+0x3ec/0xf9f [ 46.208274] ? do_int80_syscall_32+0x9c0/0x9c0 [ 46.212822] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 46.218326] ? syscall_return_slowpath+0x550/0x550 [ 46.223223] ? syscall_return_slowpath+0x2ac/0x550 [ 46.228121] ? sysret32_from_system_call+0x5/0x3c [ 46.232933] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.237744] entry_SYSENTER_compat+0x70/0x7f [ 46.242121] RIP: 0023:0xf7f64c99 [ 46.245455] RSP: 002b:00000000ffa53eec EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 46.253127] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 46.260362] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 46.267600] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 46.274837] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 46.282072] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 46.289316] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 1c 2f 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 [ 46.308379] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b0357c78 [ 46.314998] ---[ end trace aff63c8d24da3b21 ]--- [ 46.319738] Kernel panic - not syncing: Fatal exception [ 46.325431] Dumping ftrace buffer: [ 46.328938] (ftrace buffer empty) [ 46.332619] Kernel Offset: disabled [ 46.336214] Rebooting in 86400 seconds..