[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 18.172088] audit: type=1400 audit(1517780277.922:6): avc: denied { map } for pid=4141 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 '10.128.0.55' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 syzkaller login: [ 57.296154] audit: type=1400 audit(1517780317.046:7): avc: denied { map } for pid=4159 comm="syzkaller488952" path="/root/syzkaller488952633" 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 [ 57.589534] 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 [ 59.605131] kasan: CONFIG_KASAN_INLINE enabled [ 59.609848] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 59.617249] general protection fault: 0000 [#1] SMP KASAN [ 59.622777] Dumping ftrace buffer: [ 59.626289] (ftrace buffer empty) [ 59.629971] Modules linked in: [ 59.633139] CPU: 0 PID: 4586 Comm: syzkaller488952 Not tainted 4.15.0+ #296 [ 59.640217] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.649557] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 [ 59.654630] RSP: 0018:ffff8801adf3faf0 EFLAGS: 00010202 [ 59.659962] RAX: dffffc0000000000 RBX: ffff8801ad80ad40 RCX: ffffffff851a5940 [ 59.667206] RDX: 0000000000000045 RSI: 000000009833461d RDI: 0000000000000228 [ 59.674453] RBP: ffff8801adf3fd70 R08: 1ffff10035be7e9f R09: 0000000000000002 [ 59.681701] R10: ffff8801adf3f9c0 R11: 0000000000000000 R12: ffff8801ad859b40 [ 59.688952] R13: ffff8801adf3fd48 R14: 0000000000000000 R15: ffff8801adf3fc28 [ 59.696195] FS: 0000000001269940(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 59.704400] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.710255] CR2: 00000000205fafd2 CR3: 00000001ca944004 CR4: 00000000001606f0 [ 59.717514] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.724765] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.732005] Call Trace: [ 59.734581] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 59.739750] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 59.745176] ? selinux_socket_connect+0x311/0x730 [ 59.749996] ? lock_downgrade+0x980/0x980 [ 59.754121] ? lock_downgrade+0x980/0x980 [ 59.758242] ? selinux_socket_setsockopt+0x80/0x80 [ 59.763147] ? lock_release+0xa40/0xa40 [ 59.767098] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 59.772959] ? __check_object_size+0x8b/0x530 [ 59.777428] ? handle_mm_fault+0x476/0x930 [ 59.781639] ? __might_sleep+0x95/0x190 [ 59.785604] ? security_socket_connect+0x89/0xb0 [ 59.790343] SYSC_connect+0x213/0x4a0 [ 59.794120] ? SYSC_bind+0x410/0x410 [ 59.797811] ? do_page_fault+0xee/0x720 [ 59.801769] ? __do_page_fault+0xc90/0xc90 [ 59.805986] ? sock_map_fd+0x53/0x90 [ 59.809676] ? SyS_socket+0x12d/0x1d0 [ 59.813544] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 59.818375] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 59.823365] SyS_connect+0x24/0x30 [ 59.826880] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 59.831607] RIP: 0033:0x445df9 [ 59.834767] RSP: 002b:00007ffd504806c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 59.842444] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445df9 [ 59.849692] RDX: 000000000000002e RSI: 00000000205fafd2 RDI: 0000000000000005 [ 59.856933] RBP: 000000000000e8cb R08: 0000000000000000 R09: 0000000000000000 [ 59.864195] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 59.871443] R13: 0000000000000004 R14: 00000000006d4050 R15: 00000000004a7a2c [ 59.878695] Code: fe ff ff e8 70 4c 56 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 [ 59.897785] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801adf3faf0 [ 59.904402] ---[ end trace 7b740438d21cd50d ]--- [ 59.909174] Kernel panic - not syncing: Fatal exception [ 59.915025] Dumping ftrace buffer: [ 59.918550] (ftrace buffer empty) [ 59.922232] Kernel Offset: disabled [ 59.925833] Rebooting in 86400 seconds..