[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 18.962514] audit: type=1400 audit(1517790549.061:6): avc: denied { map } for pid=4152 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 '10.128.0.6' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 35.478479] audit: type=1400 audit(1517790565.577:7): avc: denied { map } for pid=4170 comm="syzkaller321970" path="/root/syzkaller321970499" 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 [ 35.483989] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 37.778109] kasan: CONFIG_KASAN_INLINE enabled [ 37.782792] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 37.790172] general protection fault: 0000 [#1] SMP KASAN [ 37.795683] Dumping ftrace buffer: [ 37.799202] (ftrace buffer empty) [ 37.802884] Modules linked in: [ 37.806051] CPU: 1 PID: 4483 Comm: syzkaller321970 Not tainted 4.15.0+ #296 [ 37.813117] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.822449] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 [ 37.827528] RSP: 0018:ffff8801b00efaf0 EFLAGS: 00010202 [ 37.832863] RAX: dffffc0000000000 RBX: ffff8801b1830300 RCX: ffffffff851a5940 [ 37.840101] RDX: 0000000000000045 RSI: 00000000dbdb95ae RDI: 0000000000000228 [ 37.847341] RBP: ffff8801b00efd70 R08: 1ffff1003601de9f R09: 0000000000000002 [ 37.854588] R10: ffff8801b00ef9c0 R11: 0000000000000000 R12: ffff8801b187e900 [ 37.861831] R13: ffff8801b00efd48 R14: 0000000000000000 R15: ffff8801b00efc28 [ 37.869852] FS: 00007f9ab11b1700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 37.878046] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.883900] CR2: 0000000020e71000 CR3: 00000001b0c95001 CR4: 00000000001606e0 [ 37.891143] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.898384] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.905623] Call Trace: [ 37.908187] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 37.913360] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 37.918697] ? selinux_socket_connect+0x311/0x730 [ 37.923512] ? lock_downgrade+0x980/0x980 [ 37.927632] ? selinux_socket_setsockopt+0x80/0x80 [ 37.932531] ? lock_release+0xa40/0xa40 [ 37.936475] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 37.942329] ? __check_object_size+0x8b/0x530 [ 37.946796] ? handle_mm_fault+0x476/0x930 [ 37.951004] ? __might_sleep+0x95/0x190 [ 37.954956] ? security_socket_connect+0x89/0xb0 [ 37.959687] SYSC_connect+0x213/0x4a0 [ 37.963460] ? SYSC_bind+0x410/0x410 [ 37.967150] ? do_page_fault+0xee/0x720 [ 37.971095] ? __do_page_fault+0xc90/0xc90 [ 37.975305] ? do_futex+0x22a0/0x22a0 [ 37.979078] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 37.983898] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 37.988885] SyS_connect+0x24/0x30 [ 37.992406] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 37.997131] RIP: 0033:0x4465e9 [ 38.000290] RSP: 002b:00007f9ab11b0da8 EFLAGS: 00000287 ORIG_RAX: 000000000000002a [ 38.007967] RAX: ffffffffffffffda RBX: 00000000006debfc RCX: 00000000004465e9 [ 38.015214] RDX: 0000000000000032 RSI: 0000000020e71000 RDI: 0000000000000008 [ 38.022463] RBP: 00000000006debf8 R08: 0000000000000000 R09: 0000000000000000 [ 38.029705] R10: 0000000000000000 R11: 0000000000000287 R12: 616e616d65733a72 [ 38.036946] R13: 5f7463656a626f3a R14: 755f6d6574737973 R15: 0000000000000013 [ 38.044193] 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 [ 38.063260] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801b00efaf0 [ 38.069881] ---[ end trace 1f1a01058158f11e ]--- [ 38.074631] Kernel panic - not syncing: Fatal exception [ 38.080442] Dumping ftrace buffer: [ 38.083953] (ftrace buffer empty) [ 38.087635] Kernel Offset: disabled [ 38.091231] Rebooting in 86400 seconds..