[?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. [ 17.455993] audit: type=1400 audit(1519222313.062:6): avc: denied { map } for pid=3977 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 '10.128.15.202' (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: [ 23.757443] audit: type=1400 audit(1519222319.364:7): avc: denied { map } for pid=3991 comm="syzkaller240626" path="/root/syzkaller240626208" 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 [ 24.355135] kasan: CONFIG_KASAN_INLINE enabled [ 24.359838] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 24.367240] general protection fault: 0000 [#1] SMP KASAN [ 24.372764] Dumping ftrace buffer: [ 24.376276] (ftrace buffer empty) [ 24.379959] Modules linked in: [ 24.383126] CPU: 0 PID: 4078 Comm: syzkaller240626 Not tainted 4.16.0-rc2+ #323 [ 24.390544] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.399884] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 [ 24.404957] RSP: 0018:ffff8801cee679a8 EFLAGS: 00010202 [ 24.410308] RAX: dffffc0000000000 RBX: ffff8801cf24ecc0 RCX: ffffffff851b65c0 [ 24.417552] RDX: 0000000000000045 RSI: 00000000671453b9 RDI: 0000000000000228 [ 24.424886] RBP: ffff8801cee67c28 R08: 1ffff10039dcce77 R09: 0000000000000002 [ 24.432131] R10: ffff8801cee67878 R11: 0000000000000000 R12: ffff8801ce5ae4c0 [ 24.439375] R13: ffff8801cee67c00 R14: 0000000000000000 R15: ffff8801cee67ae0 [ 24.446619] FS: 0000000001ff6880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 24.454819] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.460687] CR2: 0000000020000000 CR3: 00000001ce5c3001 CR4: 00000000001606f0 [ 24.467939] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.475184] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.482425] Call Trace: [ 24.484997] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 24.490171] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 24.495513] ? selinux_socket_connect+0x311/0x730 [ 24.500330] ? lock_downgrade+0x980/0x980 [ 24.504463] ? selinux_socket_setsockopt+0x80/0x80 [ 24.509364] ? lock_release+0xa40/0xa40 [ 24.513325] ? trace_event_raw_event_sched_switch+0x810/0x810 [ 24.519183] ? __check_object_size+0x8b/0x530 [ 24.523653] ? __might_sleep+0x95/0x190 [ 24.527606] ? security_socket_connect+0x89/0xb0 [ 24.532339] SYSC_connect+0x213/0x4a0 [ 24.536114] ? SYSC_bind+0x410/0x410 [ 24.539802] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 24.544358] ? vmacache_find+0x5f/0x280 [ 24.548307] ? vmacache_update+0xfe/0x130 [ 24.552440] ? mm_fault_error+0x2c0/0x2c0 [ 24.556565] ? move_addr_to_kernel+0x60/0x60 [ 24.560952] ? SyS_accept+0x30/0x30 [ 24.564554] SyS_connect+0x24/0x30 [ 24.568070] do_syscall_64+0x280/0x940 [ 24.571950] ? __do_page_fault+0xc90/0xc90 [ 24.576161] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.580898] ? syscall_return_slowpath+0x550/0x550 [ 24.585818] ? syscall_return_slowpath+0x2ac/0x550 [ 24.590725] ? prepare_exit_to_usermode+0x350/0x350 [ 24.595718] ? retint_user+0x18/0x18 [ 24.599412] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.604231] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 24.609396] RIP: 0033:0x441429 [ 24.612560] RSP: 002b:00007ffc2ec02d58 EFLAGS: 00000207 ORIG_RAX: 000000000000002a [ 24.620239] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441429 [ 24.627480] RDX: 000000000000002e RSI: 0000000020000000 RDI: 0000000000000004 [ 24.634722] RBP: 0000000000005f18 R08: 0000000000000000 R09: 0000000000000000 [ 24.641964] R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000000000 [ 24.649207] R13: 00000000006cd428 R14: 0000000000000000 R15: 0000000000000000 [ 24.656458] Code: fe ff ff e8 10 a6 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 [ 24.675551] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801cee679a8 [ 24.682269] ---[ end trace 81252e28a5652e68 ]--- [ 24.687042] Kernel panic - not syncing: Fatal exception [ 24.692797] Dumping ftrace buffer: [ 24.696318] (ftrace buffer empty) [ 24.700000] Kernel Offset: disabled [ 24.703600] Rebooting in 86400 seconds..