[?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. [ 18.084944] audit: type=1400 audit(1520271071.222:6): avc: denied { map } for pid=4212 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 '10.128.0.16' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 35.263889] audit: type=1400 audit(1520271088.401:7): avc: denied { map } for pid=4230 comm="syzkaller832236" path="/root/syzkaller832236269" 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 [ 36.800104] kasan: CONFIG_KASAN_INLINE enabled [ 36.804768] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 36.812131] general protection fault: 0000 [#1] SMP KASAN [ 36.817640] Dumping ftrace buffer: [ 36.821146] (ftrace buffer empty) [ 36.824830] Modules linked in: [ 36.827997] CPU: 1 PID: 4748 Comm: syzkaller832236 Not tainted 4.16.0-rc4+ #341 [ 36.835412] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.844748] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 [ 36.849819] RSP: 0018:ffff8801cf91f9a8 EFLAGS: 00010202 [ 36.855639] RAX: dffffc0000000000 RBX: ffff8801b19b54c0 RCX: ffffffff854a7e70 [ 36.862877] RDX: 0000000000000045 RSI: 0000000024deec74 RDI: 0000000000000228 [ 36.870115] RBP: ffff8801cf91fc28 R08: 1ffff10039f23e77 R09: 0000000000000002 [ 36.877354] R10: ffff8801cf91f878 R11: 0000000000000000 R12: ffff8801b19be940 [ 36.884592] R13: ffff8801cf91fc00 R14: 0000000000000000 R15: ffff8801cf91fae0 [ 36.891832] FS: 00007fc93b76f700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 36.900026] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.905875] CR2: 0000000020000500 CR3: 00000001b25ff002 CR4: 00000000001606e0 [ 36.913117] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.920357] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.927594] Call Trace: [ 36.930159] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 36.935320] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 36.940656] ? selinux_socket_connect+0x311/0x730 [ 36.945467] ? lock_downgrade+0x980/0x980 [ 36.949584] ? selinux_socket_setsockopt+0x80/0x80 [ 36.954482] ? lock_release+0xa40/0xa40 [ 36.958428] ? check_same_owner+0x320/0x320 [ 36.962718] ? __check_object_size+0x8b/0x530 [ 36.967184] ? __might_sleep+0x95/0x190 [ 36.971134] ? security_socket_connect+0x89/0xb0 [ 36.975860] SYSC_connect+0x213/0x4a0 [ 36.979629] ? SYSC_bind+0x410/0x410 [ 36.983312] ? find_held_lock+0x35/0x1d0 [ 36.987351] ? lock_release+0xa40/0xa40 [ 36.991293] ? __switch_to+0x6df/0x13c0 [ 36.995236] ? do_raw_spin_trylock+0x190/0x190 [ 36.999787] SyS_connect+0x24/0x30 [ 37.003295] ? SyS_accept+0x30/0x30 [ 37.006894] do_syscall_64+0x281/0x940 [ 37.010751] ? _raw_spin_unlock_irq+0x27/0x70 [ 37.015215] ? finish_task_switch+0x1c1/0x7e0 [ 37.019678] ? syscall_return_slowpath+0x550/0x550 [ 37.024575] ? syscall_return_slowpath+0x2ac/0x550 [ 37.029472] ? prepare_exit_to_usermode+0x350/0x350 [ 37.034472] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 37.039805] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.044620] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 37.049780] RIP: 0033:0x4468e9 [ 37.052936] RSP: 002b:00007fc93b76edb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 37.060612] RAX: ffffffffffffffda RBX: 00000000006e29fc RCX: 00000000004468e9 [ 37.067848] RDX: 000000000000002e RSI: 0000000020000500 RDI: 0000000000000006 [ 37.075086] RBP: 00000000006e29f8 R08: 00007fc93b76f700 R09: 0000000000000000 [ 37.082329] R10: 00007fc93b76f700 R11: 0000000000000246 R12: 0000000000000000 [ 37.089568] R13: 00007ffc2157321f R14: 00007fc93b76f9c0 R15: 0000000000000003 [ 37.096815] Code: fe ff ff e8 c0 87 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 [ 37.115879] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801cf91f9a8 [ 37.122595] ---[ end trace 98a04fe7d15749d6 ]--- [ 37.127344] Kernel panic - not syncing: Fatal exception [ 37.133052] Dumping ftrace buffer: [ 37.136560] (ftrace buffer empty) [ 37.140239] Kernel Offset: disabled [ 37.143837] Rebooting in 86400 seconds..