[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 17.654081] audit: type=1400 audit(1520091380.300:6): avc: denied { map } for pid=4222 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 '10.128.0.14' (ECDSA) to the list of known hosts. net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 syzkaller login: [ 42.577548] audit: type=1400 audit(1520091405.224:7): avc: denied { map } for pid=4240 comm="syzkaller710705" path="/root/syzkaller710705418" 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: File exists RTNETLINK answers: File exists RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 43.015802] 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 [ 43.381185] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 43.387296] 8021q: adding VLAN 0 to HW filter on device bond0 executing program executing program executing program executing program [ 43.425205] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 43.463773] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 54.982141] kasan: CONFIG_KASAN_INLINE enabled [ 54.986822] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 54.994365] general protection fault: 0000 [#1] SMP KASAN [ 54.999879] Dumping ftrace buffer: [ 55.003389] (ftrace buffer empty) [ 55.007070] Modules linked in: [ 55.010250] CPU: 1 PID: 7692 Comm: syzkaller710705 Not tainted 4.16.0-rc3+ #338 [ 55.017674] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.027013] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 [ 55.032086] RSP: 0018:ffff8801b3f1f9a8 EFLAGS: 00010202 [ 55.037418] RAX: dffffc0000000000 RBX: ffff8801b41d4400 RCX: ffffffff854a6dd0 [ 55.044665] RDX: 0000000000000045 RSI: 000000009c902119 RDI: 0000000000000228 [ 55.051907] RBP: ffff8801b3f1fc28 R08: 1ffff100367e3e77 R09: 0000000000000002 [ 55.059148] R10: ffff8801b3f1f878 R11: 0000000000000000 R12: ffff8801b4154d80 [ 55.066389] R13: ffff8801b3f1fc00 R14: 0000000000000000 R15: ffff8801b3f1fae0 [ 55.073637] FS: 00007fc500065700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 55.081836] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.087693] CR2: 00000000205fafd2 CR3: 00000001b42b2004 CR4: 00000000001606e0 [ 55.094937] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.102179] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.109419] Call Trace: [ 55.111994] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 55.117245] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 55.122588] ? selinux_socket_connect+0x311/0x730 [ 55.127409] ? lock_downgrade+0x980/0x980 [ 55.131529] ? selinux_socket_setsockopt+0x80/0x80 [ 55.136426] ? lock_release+0xa40/0xa40 [ 55.140373] ? check_same_owner+0x320/0x320 [ 55.144667] ? __check_object_size+0x8b/0x530 [ 55.149145] ? __might_sleep+0x95/0x190 [ 55.153097] ? security_socket_connect+0x89/0xb0 [ 55.157826] SYSC_connect+0x213/0x4a0 [ 55.161597] ? SYSC_bind+0x410/0x410 [ 55.165293] ? __handle_mm_fault+0x38c0/0x38c0 [ 55.169863] ? vmacache_find+0x5f/0x280 [ 55.173831] ? mm_fault_error+0x2c0/0x2c0 [ 55.177951] ? move_addr_to_kernel+0x60/0x60 [ 55.182354] SyS_connect+0x24/0x30 [ 55.185871] ? SyS_accept+0x30/0x30 [ 55.189470] do_syscall_64+0x281/0x940 [ 55.193328] ? __do_page_fault+0xc90/0xc90 [ 55.197531] ? _raw_spin_unlock_irq+0x27/0x70 [ 55.201995] ? finish_task_switch+0x1c1/0x7e0 [ 55.206463] ? syscall_return_slowpath+0x550/0x550 [ 55.211365] ? syscall_return_slowpath+0x2ac/0x550 [ 55.216272] ? prepare_exit_to_usermode+0x350/0x350 [ 55.221265] ? retint_user+0x18/0x18 [ 55.224969] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 55.229814] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 55.234994] RIP: 0033:0x448ae9 [ 55.238164] RSP: 002b:00007fc500064ce8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 55.245844] RAX: ffffffffffffffda RBX: 00000000006e5a04 RCX: 0000000000448ae9 [ 55.253084] RDX: 000000000000002e RSI: 00000000205fafd2 RDI: 0000000000000004 [ 55.260325] RBP: 00000000006e5a00 R08: 0000000000000000 R09: 0000000000000000 [ 55.267565] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 55.274808] R13: 00007fff19a0af7f R14: 00007fc5000659c0 R15: 0000000000000004 [ 55.282072] Code: fe ff ff e8 70 86 26 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 [ 55.301147] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801b3f1f9a8 [ 55.307765] ---[ end trace 06ab89e740254cfa ]--- [ 55.312510] Kernel panic - not syncing: Fatal exception [ 55.318369] Dumping ftrace buffer: [ 55.321902] (ftrace buffer empty) [ 55.325603] Kernel Offset: disabled [ 55.329215] Rebooting in 86400 seconds..