[....] Starting enhanced syslogd: rsyslogd[ 13.693946] audit: type=1400 audit(1516201884.039:5): avc: denied { syslog } for pid=3509 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?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. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 34.461803] audit: type=1400 audit(1516201904.807:6): avc: denied { map } for pid=3653 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 Warning: Permanently added '10.128.15.224' (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 executing program executing program executing program executing program executing program [ 40.576765] audit: type=1400 audit(1516201910.922:7): avc: denied { map } for pid=3665 comm="syzkaller522195" path="/root/syzkaller522195054" 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 executing program executing program executing program [ 41.268134] kasan: CONFIG_KASAN_INLINE enabled [ 41.272826] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 41.280199] general protection fault: 0000 [#1] SMP KASAN [ 41.285711] Dumping ftrace buffer: [ 41.289223] (ftrace buffer empty) [ 41.292908] Modules linked in: [ 41.296088] CPU: 1 PID: 3849 Comm: syzkaller522195 Not tainted 4.15.0-rc8+ #265 [ 41.303504] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.312846] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 [ 41.317919] RSP: 0018:ffff8801d93d7af0 EFLAGS: 00010202 [ 41.323254] RAX: dffffc0000000000 RBX: ffff8801bb4c83c0 RCX: ffffffff850248e0 [ 41.330495] RDX: 0000000000000045 RSI: 00000000364f900d RDI: 0000000000000228 [ 41.337744] RBP: ffff8801d93d7d70 R08: 1ffff1003b27ae9f R09: 0000000000000002 [ 41.344987] R10: ffff8801d93d79c0 R11: 0000000000000000 R12: ffff8801bb4d5200 [ 41.352228] R13: ffff8801d93d7d48 R14: 0000000000000000 R15: ffff8801d93d7c28 [ 41.359481] FS: 0000000001f2a880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 41.367678] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.373529] CR2: 00000000205fafd2 CR3: 00000001d97ee006 CR4: 00000000001606e0 [ 41.380773] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.388017] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.395271] Call Trace: [ 41.397957] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 41.403124] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 41.408464] ? selinux_socket_connect+0x311/0x730 [ 41.413281] ? lock_downgrade+0x980/0x980 [ 41.417408] ? lock_downgrade+0x980/0x980 [ 41.421526] ? selinux_socket_setsockopt+0x80/0x80 [ 41.426435] ? lock_release+0xa40/0xa40 [ 41.430383] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 41.436236] ? __check_object_size+0x25d/0x4f0 [ 41.440789] ? handle_mm_fault+0x410/0x8d0 [ 41.444995] ? __might_sleep+0x95/0x190 [ 41.448946] ? security_socket_connect+0x89/0xb0 [ 41.453675] SYSC_connect+0x213/0x4a0 [ 41.457465] ? SYSC_bind+0x410/0x410 [ 41.461153] ? do_page_fault+0xee/0x720 [ 41.465099] ? __do_page_fault+0xc90/0xc90 [ 41.469308] ? sock_map_fd+0x53/0x90 [ 41.472993] ? SyS_socket+0x12d/0x1d0 [ 41.476766] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 41.481580] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 41.486568] SyS_connect+0x24/0x30 [ 41.490080] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 41.494805] RIP: 0033:0x4407d9 [ 41.497974] RSP: 002b:00007ffc946da678 EFLAGS: 00000203 ORIG_RAX: 000000000000002a [ 41.505653] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004407d9 [ 41.512893] RDX: 000000000000002e RSI: 00000000205fafd2 RDI: 0000000000000005 [ 41.520132] RBP: 000000000000a130 R08: 0000000000000000 R09: 0000000000000000 [ 41.527371] R10: 0000000000000000 R11: 0000000000000203 R12: 0000000000000000 [ 41.534621] R13: 0000000000401cd0 R14: 0000000000000000 R15: 0000000000000000 [ 41.541872] Code: fe ff ff e8 e0 ce 6d 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 [ 41.560938] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801d93d7af0 [ 41.567559] ---[ end trace d70298e1fee7696d ]--- [ 41.572302] Kernel panic - not syncing: Fatal exception [ 41.577969] Dumping ftrace buffer: [ 41.581491] (ftrace buffer empty) [ 41.585186] Kernel Offset: disabled [ 41.588788] Rebooting in 86400 seconds..