[....] Starting enhanced syslogd: rsyslogd[ 15.177270] audit: type=1400 audit(1521009798.999:5): avc: denied { syslog } for pid=4071 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: [ 17.696452] audit: type=1400 audit(1521009801.518:6): avc: denied { map } for pid=4210 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 '10.128.10.13' (ECDSA) to the list of known hosts. executing program [ 24.036712] audit: type=1400 audit(1521009807.858:7): avc: denied { map } for pid=4224 comm="syzkaller788071" path="/root/syzkaller788071550" 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 [ 29.152152] kasan: CONFIG_KASAN_INLINE enabled [ 29.156875] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.164264] general protection fault: 0000 [#1] SMP KASAN [ 29.169779] Dumping ftrace buffer: [ 29.173291] (ftrace buffer empty) [ 29.176978] Modules linked in: [ 29.180145] CPU: 1 PID: 4224 Comm: syzkaller788071 Not tainted 4.16.0-rc5+ #262 [ 29.187560] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.196890] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 29.201965] RSP: 0018:ffff8801b3a67c78 EFLAGS: 00010206 [ 29.207309] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 29.214556] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 29.221808] RBP: ffff8801b3a67c90 R08: 0000000000000000 R09: 1ffff1003674cf0b [ 29.229052] R10: ffff8801b3a67820 R11: 0000000000000001 R12: ffff8801ab1427d2 [ 29.236290] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b3a67d08 [ 29.243539] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000009b54840 [ 29.251747] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 29.257611] CR2: 0000000000fe3370 CR3: 00000001b4122003 CR4: 00000000001606e0 [ 29.264865] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.272112] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.279357] Call Trace: [ 29.281930] smc_shutdown+0x3ed/0x540 [ 29.285799] SyS_shutdown+0x137/0x290 [ 29.289575] ? SyS_getsockopt+0x340/0x340 [ 29.293709] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 29.299222] ? do_fast_syscall_32+0x156/0xf9f [ 29.303693] ? SyS_getsockopt+0x340/0x340 [ 29.307824] do_fast_syscall_32+0x3ec/0xf9f [ 29.312130] ? do_int80_syscall_32+0x9c0/0x9c0 [ 29.316691] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 29.321424] ? syscall_return_slowpath+0x550/0x550 [ 29.326326] ? syscall_return_slowpath+0x2ac/0x550 [ 29.331230] ? prepare_exit_to_usermode+0x350/0x350 [ 29.336222] ? sysret32_from_system_call+0x5/0x3c [ 29.341044] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.345867] entry_SYSENTER_compat+0x70/0x7f [ 29.350248] RIP: 0023:0xf7f8bc99 [ 29.353579] RSP: 002b:00000000ffa2f10c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 29.361257] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 29.368510] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 29.375760] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 29.383003] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 29.390246] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 29.397509] 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 [ 29.416669] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b3a67c78 [ 29.423298] ---[ end trace af084f2166801265 ]--- [ 29.428060] Kernel panic - not syncing: Fatal exception [ 29.433762] Dumping ftrace buffer: [ 29.437275] (ftrace buffer empty) [ 29.440963] Kernel Offset: disabled [ 29.444565] Rebooting in 86400 seconds..