[?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. [ 18.183625] audit: type=1400 audit(1518837914.023:6): avc: denied { map } for pid=4155 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.34' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 syzkaller login: [ 24.448613] audit: type=1400 audit(1518837920.288:7): avc: denied { map } for pid=4169 comm="syzkaller347646" path="/root/syzkaller347646408" 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 [ 24.790181] ip (4235) used greatest stack depth: 16544 bytes left [ 24.822460] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 31.999144] kasan: CONFIG_KASAN_INLINE enabled [ 32.003815] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 32.011186] general protection fault: 0000 [#1] SMP KASAN [ 32.016706] Dumping ftrace buffer: [ 32.020216] (ftrace buffer empty) [ 32.023895] Modules linked in: [ 32.027060] CPU: 0 PID: 5461 Comm: syzkaller347646 Not tainted 4.16.0-rc1+ #315 [ 32.034472] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.043801] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 [ 32.048870] RSP: 0018:ffff8801d39c79a8 EFLAGS: 00010202 [ 32.054202] RAX: dffffc0000000000 RBX: ffff8801d380e000 RCX: ffffffff851b4ed0 [ 32.061443] RDX: 0000000000000045 RSI: 00000000418d701c RDI: 0000000000000228 [ 32.068686] RBP: ffff8801d39c7c28 R08: 1ffff1003a738e77 R09: 0000000000000002 [ 32.075934] R10: ffff8801d39c7878 R11: 0000000000000000 R12: ffff8801d381d200 [ 32.083172] R13: ffff8801d39c7c00 R14: 0000000000000000 R15: ffff8801d39c7ae0 [ 32.090414] FS: 00000000023c9880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 32.098608] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 32.104457] CR2: 00000000205fafd2 CR3: 00000001cce09001 CR4: 00000000001606f0 [ 32.111701] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 32.118938] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 32.126176] Call Trace: [ 32.128739] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 32.133901] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 32.139237] ? selinux_socket_connect+0x311/0x730 [ 32.144051] ? lock_downgrade+0x980/0x980 [ 32.148168] ? selinux_socket_setsockopt+0x80/0x80 [ 32.153065] ? lock_release+0xa40/0xa40 [ 32.157011] ? trace_event_raw_event_sched_switch+0x810/0x810 [ 32.162872] ? __check_object_size+0x8b/0x530 [ 32.167342] ? __might_sleep+0x95/0x190 [ 32.171294] ? security_socket_connect+0x89/0xb0 [ 32.176030] SYSC_connect+0x213/0x4a0 [ 32.179806] ? SYSC_bind+0x410/0x410 [ 32.183492] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 32.188044] ? vmacache_find+0x5f/0x280 [ 32.191999] ? mm_fault_error+0x2c0/0x2c0 [ 32.196123] ? move_addr_to_kernel+0x60/0x60 [ 32.200503] ? SyS_accept+0x30/0x30 [ 32.204101] SyS_connect+0x24/0x30 [ 32.207616] do_syscall_64+0x280/0x940 [ 32.211476] ? __do_page_fault+0xc90/0xc90 [ 32.215679] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 32.220406] ? syscall_return_slowpath+0x550/0x550 [ 32.225308] ? syscall_return_slowpath+0x2ac/0x550 [ 32.230208] ? prepare_exit_to_usermode+0x350/0x350 [ 32.235195] ? retint_user+0x18/0x18 [ 32.238881] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.243695] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 32.248854] RIP: 0033:0x445cd9 [ 32.252016] RSP: 002b:00007ffdf946db08 EFLAGS: 00000203 ORIG_RAX: 000000000000002a [ 32.259696] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 0000000000445cd9 [ 32.266937] RDX: 000000000000002e RSI: 00000000205fafd2 RDI: 0000000000000005 [ 32.274177] RBP: 0000000000007cf9 R08: 0000000000000000 R09: 0000000000000000 [ 32.281416] R10: 0000000000000000 R11: 0000000000000203 R12: 0000000000000000 [ 32.288654] R13: 0000000000402f40 R14: 0000000000000000 R15: 0000000000000000 [ 32.295899] Code: fe ff ff e8 00 bd 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 [ 32.314974] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801d39c79a8 [ 32.321593] ---[ end trace ddc3a3322165fef2 ]--- [ 32.326351] Kernel panic - not syncing: Fatal exception [ 32.332092] Dumping ftrace buffer: [ 32.335609] (ftrace buffer empty) [ 32.339319] Kernel Offset: disabled [ 32.342915] Rebooting in 86400 seconds..