[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 18.634868] audit: type=1400 audit(1519964026.617:6): avc: denied { map } for pid=4219 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 '10.128.0.43' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program syzkaller login: [ 24.955450] audit: type=1400 audit(1519964032.938:7): avc: denied { map } for pid=4233 comm="syzkaller722421" path="/root/syzkaller722421664" 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 [ 25.019071] kasan: CONFIG_KASAN_INLINE enabled [ 25.023860] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.031446] general protection fault: 0000 [#1] SMP KASAN [ 25.036969] Dumping ftrace buffer: [ 25.040479] (ftrace buffer empty) [ 25.044162] Modules linked in: [ 25.047329] CPU: 1 PID: 4248 Comm: syzkaller722421 Not tainted 4.16.0-rc3+ #335 [ 25.054744] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.064084] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 [ 25.069157] RSP: 0018:ffff8801b700f9a8 EFLAGS: 00010202 [ 25.074488] RAX: dffffc0000000000 RBX: ffff8801b0cb73c0 RCX: ffffffff854a6dd0 [ 25.081728] RDX: 0000000000000045 RSI: 000000009833461d RDI: 0000000000000228 [ 25.088967] RBP: ffff8801b700fc28 R08: 1ffff10036e01e77 R09: 0000000000000002 [ 25.096208] R10: ffff8801b700f878 R11: 0000000000000000 R12: ffff8801b0de76c0 [ 25.103461] R13: ffff8801b700fc00 R14: 0000000000000000 R15: ffff8801b700fae0 [ 25.110704] FS: 00007f2de92fb700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 25.118898] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.124749] CR2: 00000000205fafd2 CR3: 00000001b0b10001 CR4: 00000000001606e0 [ 25.131996] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.139243] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.146511] Call Trace: [ 25.149082] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 25.154247] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 25.159584] ? selinux_socket_connect+0x311/0x730 [ 25.164399] ? lock_downgrade+0x980/0x980 [ 25.168518] ? selinux_socket_setsockopt+0x80/0x80 [ 25.173420] ? lock_release+0xa40/0xa40 [ 25.177365] ? check_same_owner+0x320/0x320 [ 25.181661] ? __check_object_size+0x8b/0x530 [ 25.186134] ? __might_sleep+0x95/0x190 [ 25.190094] ? security_socket_connect+0x89/0xb0 [ 25.194830] SYSC_connect+0x213/0x4a0 [ 25.198605] ? SYSC_bind+0x410/0x410 [ 25.202291] ? find_held_lock+0x35/0x1d0 [ 25.206337] ? lock_release+0xa40/0xa40 [ 25.210284] ? __switch_to+0x6df/0x13c0 [ 25.214230] ? do_raw_spin_trylock+0x190/0x190 [ 25.218786] SyS_connect+0x24/0x30 [ 25.222297] ? SyS_accept+0x30/0x30 [ 25.225897] do_syscall_64+0x281/0x940 [ 25.229758] ? _raw_spin_unlock_irq+0x27/0x70 [ 25.234226] ? finish_task_switch+0x1c1/0x7e0 [ 25.238695] ? syscall_return_slowpath+0x550/0x550 [ 25.243598] ? syscall_return_slowpath+0x2ac/0x550 [ 25.248501] ? prepare_exit_to_usermode+0x350/0x350 [ 25.253490] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 25.258826] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.263656] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 25.268822] RIP: 0033:0x4468e9 [ 25.271981] RSP: 002b:00007f2de92fadb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 25.279661] RAX: ffffffffffffffda RBX: 00000000006e29fc RCX: 00000000004468e9 [ 25.286900] RDX: 000000000000002e RSI: 00000000205fafd2 RDI: 0000000000000006 [ 25.294142] RBP: 00000000006e29f8 R08: 00007f2de92fb700 R09: 0000000000000000 [ 25.301389] R10: 00007f2de92fb700 R11: 0000000000000246 R12: 0000000000000000 [ 25.308651] R13: 00007fff14b843af R14: 00007f2de92fb9c0 R15: 0000000000000003 [ 25.315907] 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 [ 25.335311] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801b700f9a8 [ 25.341942] ---[ end trace 06372ee7263d8657 ]--- [ 25.346708] Kernel panic - not syncing: Fatal exception [ 25.352570] Dumping ftrace buffer: [ 25.356087] (ftrace buffer empty) [ 25.359773] Kernel Offset: disabled [ 25.363370] Rebooting in 86400 seconds..