[?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. [ 17.781068] audit: type=1400 audit(1517412988.611:6): avc: denied { map } for pid=4150 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 '10.128.15.215' (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 syzkaller login: [ 34.868369] audit: type=1400 audit(1517413005.699:7): avc: denied { map } for pid=4167 comm="syzkaller956355" path="/root/syzkaller956355198" 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 [ 35.258122] kasan: CONFIG_KASAN_INLINE enabled [ 35.262767] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.270153] general protection fault: 0000 [#1] SMP KASAN [ 35.275667] Dumping ftrace buffer: [ 35.279176] (ftrace buffer empty) [ 35.282856] Modules linked in: [ 35.286023] CPU: 0 PID: 4228 Comm: syzkaller956355 Not tainted 4.15.0+ #288 [ 35.293091] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.302434] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 [ 35.307511] RSP: 0018:ffff8801b1787af0 EFLAGS: 00010202 [ 35.312842] RAX: dffffc0000000000 RBX: ffff8801b14ce280 RCX: ffffffff85128a00 [ 35.320081] RDX: 0000000000000045 RSI: 0000000005b31f5d RDI: 0000000000000228 [ 35.327322] RBP: ffff8801b1787d70 R08: 1ffff100362f0e9f R09: 0000000000000002 [ 35.334565] R10: ffff8801b17879c0 R11: 0000000000000000 R12: ffff8801b1bc9200 [ 35.341805] R13: ffff8801b1787d48 R14: 0000000000000000 R15: ffff8801b1787c28 [ 35.349045] FS: 000000000227d880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 35.357250] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.363101] CR2: 00000000205fafd2 CR3: 00000001af4d8001 CR4: 00000000001606f0 [ 35.370342] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.377583] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.384821] Call Trace: [ 35.387386] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 35.392554] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 35.397889] ? selinux_socket_connect+0x311/0x730 [ 35.402705] ? lock_downgrade+0x980/0x980 [ 35.406821] ? lock_downgrade+0x980/0x980 [ 35.410940] ? selinux_socket_setsockopt+0x80/0x80 [ 35.415837] ? lock_release+0xa40/0xa40 [ 35.419785] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 35.425643] ? __check_object_size+0x25d/0x4f0 [ 35.430193] ? handle_mm_fault+0x410/0x8d0 [ 35.434401] ? __might_sleep+0x95/0x190 [ 35.438372] ? security_socket_connect+0x89/0xb0 [ 35.443109] SYSC_connect+0x213/0x4a0 [ 35.446881] ? SYSC_bind+0x410/0x410 [ 35.450570] ? do_page_fault+0xee/0x720 [ 35.454515] ? __do_page_fault+0xc90/0xc90 [ 35.458722] ? sock_map_fd+0x53/0x90 [ 35.462409] ? SyS_socket+0x12d/0x1d0 [ 35.466181] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 35.471004] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.476000] SyS_connect+0x24/0x30 [ 35.479512] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 35.484237] RIP: 0033:0x440bc9 [ 35.487398] RSP: 002b:00007ffcc736b378 EFLAGS: 00000207 ORIG_RAX: 000000000000002a [ 35.495077] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440bc9 [ 35.502319] RDX: 000000000000002e RSI: 00000000205fafd2 RDI: 0000000000000004 [ 35.509562] RBP: 00000000000089ae R08: 0000000000000000 R09: 0000000000000000 [ 35.516803] R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000000000 [ 35.524061] R13: 0000000000000003 R14: 00000000006ce050 R15: 00000000004a256e [ 35.531328] Code: fe ff ff e8 c0 05 5e 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 [ 35.550401] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801b1787af0 [ 35.557020] ---[ end trace bb6e72f7fed5187b ]--- [ 35.561768] Kernel panic - not syncing: Fatal exception [ 35.567481] Dumping ftrace buffer: [ 35.571002] (ftrace buffer empty) [ 35.574693] Kernel Offset: disabled [ 35.578289] Rebooting in 86400 seconds..