[Samba] coredump and MIT-krb5 exits when a joined client windows7 try to login on

[luckydog xf]

hi, all,

   I'm using MIT-krb5 and it seems it's not quite stable.

   Everything seemed  fine and krb5, samba daemon started as well unless I
tried to use "ad\xxx" to login a windows7 machine.

  Here is part coredump log,

  :Sep 25 15:08:54 pdc.ad.pthl.hk samba[2579]:   /usr/sbin/krb5kdc: krb5k=
dc: starting...
:Sep 25 15:11:56 pdc.ad.pthl.hk samba[2579]:   /usr/sbin/krb5kdc: krb5k=
dc: do_tgs_req.c:826: process_tgs_req: Assertion `status !=3D ((void *)=
0)' failed.

# samba log.
 pdc samba[3674]: [2017/09/25 16:39:49.691723,  0]
../source4/kdc/kdc-service-mit.c:348(mitkdc_server_done)
 pdc samba[3674]:  The MIT KDC daemon died with exit status 6


  Environment: centos7,  3.10.0-327.el7.x86_64 and samba 4.7.0.