[?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. [ 18.449053] audit: type=1400 audit(1517635555.899:6): avc: denied { map } for pid=4103 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 '10.128.0.36' (ECDSA) to the list of known hosts. syzkaller login: [ 24.744694] audit: type=1400 audit(1517635562.195:7): avc: denied { map } for pid=4117 comm="syzkaller522426" path="/root/syzkaller522426446" 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 [ 30.871048] kasan: CONFIG_KASAN_INLINE enabled [ 30.875900] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.883287] general protection fault: 0000 [#1] SMP KASAN [ 30.888809] Dumping ftrace buffer: [ 30.892320] (ftrace buffer empty) [ 30.896001] Modules linked in: [ 30.899169] CPU: 1 PID: 6463 Comm: syzkaller522426 Not tainted 4.15.0+ #293 [ 30.906236] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.915573] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 [ 30.920643] RSP: 0018:ffff8801b2b0faf0 EFLAGS: 00010202 [ 30.925975] RAX: dffffc0000000000 RBX: ffff8801b231c400 RCX: ffffffff851a46a0 [ 30.933215] RDX: 0000000000000045 RSI: 0000000019ee5aa2 RDI: 0000000000000228 [ 30.940456] RBP: ffff8801b2b0fd70 R08: 1ffff10036561e9f R09: 0000000000000002 [ 30.947710] R10: ffff8801b2b0f9c0 R11: 0000000000000000 R12: ffff8801b23e2040 [ 30.954950] R13: ffff8801b2b0fd48 R14: 0000000000000000 R15: ffff8801b2b0fc28 [ 30.962194] FS: 00007fd880f77700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 30.970391] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.976243] CR2: 00000000205fafd2 CR3: 00000001b239c004 CR4: 00000000001606e0 [ 30.983489] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.990729] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.997970] Call Trace: [ 31.000536] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 31.005701] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 31.011038] ? selinux_socket_connect+0x311/0x730 [ 31.015854] ? lock_downgrade+0x980/0x980 [ 31.019977] ? selinux_socket_setsockopt+0x80/0x80 [ 31.024879] ? lock_release+0xa40/0xa40 [ 31.028826] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 31.034683] ? __check_object_size+0x25d/0x4f0 [ 31.039241] ? handle_mm_fault+0x476/0x930 [ 31.043463] ? __might_sleep+0x95/0x190 [ 31.047424] ? security_socket_connect+0x89/0xb0 [ 31.052154] SYSC_connect+0x213/0x4a0 [ 31.055937] ? SYSC_bind+0x410/0x410 [ 31.059624] ? do_page_fault+0xee/0x720 [ 31.063580] ? __do_page_fault+0xc90/0xc90 [ 31.067790] ? do_futex+0x22a0/0x22a0 [ 31.071561] ? SyS_socket+0x12d/0x1d0 [ 31.075338] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 31.080172] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.085185] SyS_connect+0x24/0x30 [ 31.088704] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 31.093428] RIP: 0033:0x4460b9 [ 31.096596] RSP: 002b:00007fd880f76db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 31.104274] RAX: ffffffffffffffda RBX: 00000000006debe4 RCX: 00000000004460b9 [ 31.111515] RDX: 000000000000002e RSI: 00000000205fafd2 RDI: 0000000000000004 [ 31.118758] RBP: 00000000006debe0 R08: 0000000000000000 R09: 0000000000000000 [ 31.126002] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 31.133242] R13: 00007ffc8446000f R14: 00007fd880f779c0 R15: 0000000000000001 [ 31.140491] Code: fe ff ff e8 10 5f 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 [ 31.159578] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801b2b0faf0 [ 31.166196] ---[ end trace 7002f48efe703783 ]--- [ 31.170949] Kernel panic - not syncing: Fatal exception [ 31.176678] Dumping ftrace buffer: [ 31.180191] (ftrace buffer empty) [ 31.183876] Kernel Offset: disabled [ 31.187474] Rebooting in 86400 seconds..