[....] Starting enhanced syslogd: rsyslogd[ 15.941351] audit: type=1400 audit(1519064457.747:5): avc: denied { syslog } for pid=4023 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: [ 18.800063] audit: type=1400 audit(1519064460.605:6): avc: denied { map } for pid=4161 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 '10.128.15.219' (ECDSA) to the list of known hosts. [ 25.105632] audit: type=1400 audit(1519064466.911:7): avc: denied { map } for pid=4175 comm="syzkaller409308" path="/root/syzkaller409308176" 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 [ 25.116889] IPVS: ftp: loaded support on port[0] = 21 executing program [ 25.131581] audit: type=1400 audit(1519064466.911:8): avc: denied { sys_admin } for pid=4175 comm="syzkaller409308" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 25.170476] audit: type=1400 audit(1519064466.976:9): avc: denied { sys_chroot } for pid=4176 comm="syzkaller409308" capability=18 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program [ 25.195111] audit: type=1400 audit(1519064466.977:10): avc: denied { net_admin } for pid=4176 comm="syzkaller409308" capability=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 29.372137] kasan: CONFIG_KASAN_INLINE enabled [ 29.376859] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.384275] general protection fault: 0000 [#1] SMP KASAN [ 29.389792] Dumping ftrace buffer: [ 29.393309] (ftrace buffer empty) [ 29.396994] Modules linked in: [ 29.400165] CPU: 1 PID: 4888 Comm: syzkaller409308 Not tainted 4.16.0-rc2+ #320 [ 29.407585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.416922] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 [ 29.421994] RSP: 0018:ffff8801ab46f9a8 EFLAGS: 00010202 [ 29.427331] RAX: dffffc0000000000 RBX: ffff8801abed0d40 RCX: ffffffff851b5ed0 [ 29.434573] RDX: 0000000000000045 RSI: 00000000cf44bdaf RDI: 0000000000000228 [ 29.441821] RBP: ffff8801ab46fc28 R08: 1ffff1003568de77 R09: 0000000000000002 [ 29.449067] R10: ffff8801ab46f878 R11: 0000000000000000 R12: ffff8801d9b86480 [ 29.456311] R13: ffff8801ab46fc00 R14: 0000000000000000 R15: ffff8801ab46fae0 [ 29.463569] FS: 0000000001703880(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 29.471770] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.477624] CR2: 0000000020e77000 CR3: 00000001adb65004 CR4: 00000000001606e0 [ 29.484869] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.492113] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.499365] Call Trace: [ 29.501947] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 29.507124] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 29.512465] ? selinux_socket_connect+0x311/0x730 [ 29.517281] ? lock_downgrade+0x980/0x980 [ 29.521404] ? selinux_socket_setsockopt+0x80/0x80 [ 29.526302] ? lock_release+0xa40/0xa40 [ 29.530256] ? trace_event_raw_event_sched_switch+0x810/0x810 [ 29.536114] ? __check_object_size+0x8b/0x530 [ 29.540586] ? __might_sleep+0x95/0x190 [ 29.544628] ? security_socket_connect+0x89/0xb0 [ 29.549360] SYSC_connect+0x213/0x4a0 [ 29.553136] ? SYSC_bind+0x410/0x410 [ 29.556825] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 29.561378] ? vmacache_find+0x5f/0x280 [ 29.565322] ? vmacache_update+0xfe/0x130 [ 29.569480] ? mm_fault_error+0x2c0/0x2c0 [ 29.573601] ? move_addr_to_kernel+0x60/0x60 [ 29.577983] ? SyS_accept+0x30/0x30 [ 29.581583] SyS_connect+0x24/0x30 [ 29.585114] do_syscall_64+0x280/0x940 [ 29.588975] ? __do_page_fault+0xc90/0xc90 [ 29.593182] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 29.597912] ? syscall_return_slowpath+0x550/0x550 [ 29.602827] ? syscall_return_slowpath+0x2ac/0x550 [ 29.607730] ? prepare_exit_to_usermode+0x350/0x350 [ 29.612719] ? retint_user+0x18/0x18 [ 29.616405] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.621222] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 29.626387] RIP: 0033:0x4425f9 [ 29.629561] RSP: 002b:00000000007ef0d8 EFLAGS: 00000207 ORIG_RAX: 000000000000002a [ 29.637247] RAX: ffffffffffffffda RBX: 00000000007ef240 RCX: 00000000004425f9 [ 29.644490] RDX: 000000000000002e RSI: 0000000020e77000 RDI: 0000000000000004 [ 29.651740] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 29.658982] R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000000000 [ 29.666239] R13: 00000000000002c5 R14: 0000000000000003 R15: 0000000000000000 [ 29.673490] Code: fe ff ff e8 00 ad 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 [ 29.692649] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801ab46f9a8 [ 29.699289] ---[ end trace b3425409cb88f681 ]--- [ 29.704046] Kernel panic - not syncing: Fatal exception [ 29.709826] Dumping ftrace buffer: [ 29.713351] (ftrace buffer empty) [ 29.717034] Kernel Offset: disabled [ 29.720634] Rebooting in 86400 seconds..