[....] Starting enhanced syslogd: rsyslogd[ 12.745158] audit: type=1400 audit(1516557031.510:5): avc: denied { syslog } for pid=3511 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: [ 19.500573] audit: type=1400 audit(1516557038.266:6): avc: denied { map } for pid=3651 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 '10.128.0.53' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 43.082494] audit: type=1400 audit(1516557061.848:7): avc: denied { map } for pid=3668 comm="syzkaller375226" path="/root/syzkaller375226988" 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 46.807141] kasan: CONFIG_KASAN_INLINE enabled [ 46.811821] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 46.819216] general protection fault: 0000 [#1] SMP KASAN [ 46.824729] Dumping ftrace buffer: [ 46.828244] (ftrace buffer empty) [ 46.831927] Modules linked in: [ 46.835094] CPU: 1 PID: 4476 Comm: syzkaller375226 Not tainted 4.15.0-rc8+ #272 [ 46.842509] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.851843] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 [ 46.856916] RSP: 0018:ffff8801d4df7af0 EFLAGS: 00010202 [ 46.862250] RAX: dffffc0000000000 RBX: ffff8801d4c54940 RCX: ffffffff8502ac10 [ 46.869490] RDX: 0000000000000045 RSI: 000000004555bf53 RDI: 0000000000000228 [ 46.876731] RBP: ffff8801d4df7d70 R08: 1ffff1003a9bee9f R09: 0000000000000002 [ 46.883972] R10: ffff8801d4df79c0 R11: 0000000000000000 R12: ffff8801d53a4480 [ 46.891212] R13: ffff8801d4df7d48 R14: 0000000000000000 R15: ffff8801d4df7c28 [ 46.898455] FS: 0000000001770880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 46.906653] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.912504] CR2: 00000000205fafd2 CR3: 00000001d4cdc001 CR4: 00000000001606e0 [ 46.919747] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.926991] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.934231] Call Trace: [ 46.936800] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 46.941969] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 46.947310] ? selinux_socket_connect+0x311/0x730 [ 46.952125] ? lock_downgrade+0x980/0x980 [ 46.956247] ? lock_downgrade+0x980/0x980 [ 46.960366] ? selinux_socket_setsockopt+0x80/0x80 [ 46.965265] ? lock_release+0xa40/0xa40 [ 46.969220] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 46.975080] ? __check_object_size+0x25d/0x4f0 [ 46.979633] ? handle_mm_fault+0x410/0x8d0 [ 46.983844] ? __might_sleep+0x95/0x190 [ 46.987796] ? security_socket_connect+0x89/0xb0 [ 46.992527] SYSC_connect+0x213/0x4a0 [ 46.996301] ? SYSC_bind+0x410/0x410 [ 46.999994] ? do_page_fault+0xee/0x720 [ 47.003940] ? __do_page_fault+0xc90/0xc90 [ 47.008161] ? sock_map_fd+0x53/0x90 [ 47.011849] ? SyS_socket+0x12d/0x1d0 [ 47.015619] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 47.020436] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 47.025425] SyS_connect+0x24/0x30 [ 47.028960] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 47.033688] RIP: 0033:0x4407b9 [ 47.036862] RSP: 002b:00007ffd0970f8a8 EFLAGS: 00000207 ORIG_RAX: 000000000000002a [ 47.044540] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004407b9 [ 47.051783] RDX: 000000000000002e RSI: 00000000205fafd2 RDI: 0000000000000004 [ 47.059022] RBP: 000000000000b6d3 R08: 0000000000000000 R09: 0000000000000000 [ 47.066262] R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000000000 [ 47.073501] R13: 0000000000401cb0 R14: 0000000000000000 R15: 0000000000000000 [ 47.080750] Code: fe ff ff e8 90 7e 6d 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 e5 09 00 00 4c 89 fa 48 b8 00 00 00 00 00 fc [ 47.099835] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801d4df7af0 [ 47.106451] ---[ end trace e1b78dd4b38eed26 ]--- [ 47.111203] Kernel panic - not syncing: Fatal exception [ 47.116580] Dumping ftrace buffer: [ 47.120092] (ftrace buffer empty) [ 47.123772] Kernel Offset: disabled [ 47.127371] Rebooting in 86400 seconds..