[....] Starting enhanced syslogd: rsyslogd[ 14.557641] audit: type=1400 audit(1520220820.696:5): avc: denied { syslog } for pid=4018 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: [ 18.591354] audit: type=1400 audit(1520220824.730:6): avc: denied { map } for pid=4158 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 '10.128.0.57' (ECDSA) to the list of known hosts. executing program [ 60.911586] audit: type=1400 audit(1520220867.050:7): avc: denied { map } for pid=4176 comm="syzkaller803053" path="/root/syzkaller803053105" 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 [ 66.017074] kasan: CONFIG_KASAN_INLINE enabled [ 66.021766] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 66.029152] general protection fault: 0000 [#1] SMP KASAN [ 66.034659] Dumping ftrace buffer: [ 66.038168] (ftrace buffer empty) [ 66.041851] Modules linked in: [ 66.045017] CPU: 1 PID: 4176 Comm: syzkaller803053 Not tainted 4.16.0-rc3+ #250 [ 66.052430] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.061766] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 66.066838] RSP: 0018:ffff8801bc8b7c78 EFLAGS: 00010206 [ 66.072170] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fc6f4 [ 66.079411] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 66.086653] RBP: ffff8801bc8b7c90 R08: 0000000000000000 R09: 1ffff10037916f0b [ 66.093893] R10: ffff8801bc8b7820 R11: 0000000000000001 R12: ffff8801bc9907d2 [ 66.101139] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801bc8b7d08 [ 66.108380] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000009eba840 [ 66.116576] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 66.122433] CR2: 000055a88d709480 CR3: 00000001bc85e006 CR4: 00000000001606e0 [ 66.129679] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.136917] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.144163] Call Trace: [ 66.146729] smc_shutdown+0x3ed/0x540 [ 66.150505] SyS_shutdown+0x137/0x290 [ 66.154275] ? SyS_getsockopt+0x340/0x340 [ 66.158396] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 66.163907] ? do_fast_syscall_32+0x156/0xf9f [ 66.168374] ? SyS_getsockopt+0x340/0x340 [ 66.172491] do_fast_syscall_32+0x3ec/0xf9f [ 66.176787] ? do_int80_syscall_32+0x9c0/0x9c0 [ 66.181338] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 66.186065] ? syscall_return_slowpath+0x550/0x550 [ 66.190965] ? syscall_return_slowpath+0x2ac/0x550 [ 66.195864] ? prepare_exit_to_usermode+0x350/0x350 [ 66.200854] ? sysret32_from_system_call+0x5/0x3c [ 66.205669] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 66.210483] entry_SYSENTER_compat+0x70/0x7f [ 66.214949] RIP: 0023:0xf7f1fc99 [ 66.218284] RSP: 002b:00000000fff60c7c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 66.225959] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 66.233198] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 66.240436] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 66.247674] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 66.254913] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 66.262161] 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 [ 66.281315] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801bc8b7c78 [ 66.287931] ---[ end trace 48f877dd3448e92d ]--- [ 66.292679] Kernel panic - not syncing: Fatal exception [ 66.298440] Dumping ftrace buffer: [ 66.301962] (ftrace buffer empty) [ 66.305649] Kernel Offset: disabled [ 66.309251] Rebooting in 86400 seconds..