[....] Starting enhanced syslogd: rsyslogd[ 17.136195] audit: type=1400 audit(1518628347.449:5): avc: denied { syslog } for pid=4022 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: [ 23.390332] audit: type=1400 audit(1518628353.704:6): avc: denied { map } for pid=4161 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 '10.128.15.199' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 32.202200] audit: type=1400 audit(1518628362.516:7): avc: denied { map } for pid=4176 comm="syzkaller385040" path="/root/syzkaller385040800" 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 RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 32.468491] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 35.689183] kasan: CONFIG_KASAN_INLINE enabled [ 35.693959] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.701349] general protection fault: 0000 [#1] SMP KASAN [ 35.706864] Dumping ftrace buffer: [ 35.710373] (ftrace buffer empty) [ 35.714053] Modules linked in: [ 35.717222] CPU: 0 PID: 4786 Comm: syzkaller385040 Not tainted 4.16.0-rc1+ #311 [ 35.724637] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.733967] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 [ 35.739037] RSP: 0018:ffff8801b74a79a8 EFLAGS: 00010202 [ 35.744371] RAX: dffffc0000000000 RBX: ffff8801d0122c80 RCX: ffffffff851b2ed0 [ 35.751613] RDX: 0000000000000045 RSI: 00000000a3afd513 RDI: 0000000000000228 [ 35.758851] RBP: ffff8801b74a7c28 R08: 1ffff10036e94e77 R09: 0000000000000002 [ 35.766093] R10: ffff8801b74a7878 R11: 0000000000000000 R12: ffff8801cf858900 [ 35.773333] R13: ffff8801b74a7c00 R14: 0000000000000000 R15: ffff8801b74a7ae0 [ 35.780810] FS: 0000000001f62940(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 35.789015] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.794873] CR2: 0000000020e77000 CR3: 00000001bf849001 CR4: 00000000001606f0 [ 35.802118] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.809362] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.816615] Call Trace: [ 35.819196] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 35.824360] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 35.829704] ? selinux_socket_connect+0x311/0x730 [ 35.834517] ? lock_downgrade+0x980/0x980 [ 35.838636] ? selinux_socket_setsockopt+0x80/0x80 [ 35.843545] ? lock_release+0xa40/0xa40 [ 35.847499] ? trace_event_raw_event_sched_switch+0x810/0x810 [ 35.853356] ? __check_object_size+0x8b/0x530 [ 35.857823] ? __might_sleep+0x95/0x190 [ 35.861777] ? security_socket_connect+0x89/0xb0 [ 35.866508] SYSC_connect+0x213/0x4a0 [ 35.870289] ? SYSC_bind+0x410/0x410 [ 35.873979] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 35.878533] ? vmacache_find+0x5f/0x280 [ 35.882478] ? vmacache_update+0xfe/0x130 [ 35.886610] ? mm_fault_error+0x2c0/0x2c0 [ 35.890737] ? move_addr_to_kernel+0x60/0x60 [ 35.895117] SyS_connect+0x24/0x30 [ 35.898629] ? SyS_accept+0x30/0x30 [ 35.902227] do_syscall_64+0x282/0x940 [ 35.906084] ? __do_page_fault+0xc90/0xc90 [ 35.910298] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.915026] ? syscall_return_slowpath+0x550/0x550 [ 35.919945] ? syscall_return_slowpath+0x2ac/0x550 [ 35.924847] ? prepare_exit_to_usermode+0x350/0x350 [ 35.929836] ? retint_user+0x18/0x18 [ 35.933522] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.938340] entry_SYSCALL_64_after_hwframe+0x26/0x9b [ 35.943500] RIP: 0033:0x446db9 [ 35.946660] RSP: 002b:00007ffc804d6a78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 35.954339] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 0000000000446db9 [ 35.961591] RDX: 000000000000002e RSI: 0000000020e77000 RDI: 0000000000000005 [ 35.968844] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000004 [ 35.976087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc804d6aa0 [ 35.983329] R13: 00007ffc804d6b90 R14: 00007ffc804d6bb8 R15: 0000000000000000 [ 35.990576] Code: fe ff ff e8 a0 ce 55 fc 4c 89 fa 49 8d be 28 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 c6 04 02 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 df 09 00 00 4c 89 fa 48 b8 00 00 00 00 00 fc [ 36.009666] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801b74a79a8 [ 36.016305] ---[ end trace aff96a1d0ce3b307 ]--- [ 36.021056] Kernel panic - not syncing: Fatal exception [ 36.026817] Dumping ftrace buffer: [ 36.030333] (ftrace buffer empty) [ 36.034013] Kernel Offset: disabled [ 36.037613] Rebooting in 86400 seconds..