[?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. [ 18.713317] audit: type=1400 audit(1518887877.069:6): avc: denied { map } for pid=4169 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 '10.128.0.27' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 24.998716] audit: type=1400 audit(1518887883.354:7): avc: denied { map } for pid=4183 comm="syzkaller392956" path="/root/syzkaller392956300" 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 [ 25.379136] kasan: CONFIG_KASAN_INLINE enabled [ 25.383824] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.391194] general protection fault: 0000 [#1] SMP KASAN [ 25.396718] Dumping ftrace buffer: [ 25.400240] (ftrace buffer empty) [ 25.403920] Modules linked in: [ 25.407088] CPU: 0 PID: 4238 Comm: syzkaller392956 Not tainted 4.16.0-rc1+ #226 [ 25.414503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.423836] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 [ 25.428914] RSP: 0018:ffff8801b139f958 EFLAGS: 00010202 [ 25.434248] RAX: dffffc0000000000 RBX: ffff8801b04aac40 RCX: ffffffff851b4ed0 [ 25.441489] RDX: 0000000000000045 RSI: 000000004e906c70 RDI: 0000000000000228 [ 25.448729] RBP: ffff8801b139fbd8 R08: 1ffff10036273e6d R09: 0000000000000002 [ 25.455969] R10: ffff8801b139f828 R11: 0000000000000000 R12: ffff8801b04a16c0 [ 25.463208] R13: ffff8801b139fbb0 R14: 0000000000000000 R15: ffff8801b139fa90 [ 25.470450] FS: 0000000000000000(0000) GS:ffff8801db400000(0063) knlGS:0000000009250840 [ 25.478646] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 25.484501] CR2: 00000000205fafd2 CR3: 00000001b2462006 CR4: 00000000001606f0 [ 25.491744] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.498985] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.506226] Call Trace: [ 25.508801] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 25.513966] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 25.519305] ? selinux_socket_connect+0x311/0x730 [ 25.524125] ? lock_downgrade+0x980/0x980 [ 25.528245] ? selinux_socket_setsockopt+0x80/0x80 [ 25.533146] ? lock_release+0xa40/0xa40 [ 25.537093] ? trace_event_raw_event_sched_switch+0x810/0x810 [ 25.542950] ? __check_object_size+0x8b/0x530 [ 25.547419] ? __might_sleep+0x95/0x190 [ 25.551374] ? security_socket_connect+0x89/0xb0 [ 25.556104] SYSC_connect+0x213/0x4a0 [ 25.559876] ? SYSC_bind+0x410/0x410 [ 25.563562] ? handle_mm_fault+0x43b/0x970 [ 25.567769] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 25.572333] ? vmacache_find+0x5f/0x280 [ 25.576282] ? up_read+0x1a/0x40 [ 25.579622] ? __do_page_fault+0x3d6/0xc90 [ 25.583837] SyS_connect+0x24/0x30 [ 25.587349] ? SyS_accept+0x30/0x30 [ 25.590952] do_fast_syscall_32+0x3ec/0xf9f [ 25.595250] ? do_int80_syscall_32+0x9c0/0x9c0 [ 25.599806] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.604536] ? syscall_return_slowpath+0x2ac/0x550 [ 25.609438] ? prepare_exit_to_usermode+0x350/0x350 [ 25.614428] ? retint_user+0x18/0x18 [ 25.618116] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.622939] entry_SYSENTER_compat+0x70/0x7f [ 25.627323] RIP: 0023:0xf7fa4c79 [ 25.630659] RSP: 002b:00000000ffd0744c EFLAGS: 00000207 ORIG_RAX: 000000000000016a [ 25.638337] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00000000205fafd2 [ 25.645579] RDX: 000000000000002e RSI: 0000000000000167 RDI: 0000000000000018 [ 25.652819] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 25.660077] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 25.667317] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 25.674566] Code: fe ff ff e8 00 bd 55 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 [ 25.693635] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801b139f958 [ 25.700237] ---[ end trace ff7dd081adee512c ]--- [ 25.704988] Kernel panic - not syncing: Fatal exception [ 25.710767] Dumping ftrace buffer: [ 25.714281] (ftrace buffer empty) [ 25.717971] Kernel Offset: disabled [ 25.721570] Rebooting in 86400 seconds..