samba - Sep 2017 - coredump and MIT-krb5 exits when a joined client windows7 try to login on

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: krb5kdc:
starting...
:Sep 25 15:11:56 pdc.ad.pthl.hk samba[2579]:   /usr/sbin/krb5kdc: krb5kdc:
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.

[root at pdc samba]# kadmin.local
Authenticating as principal administrator/admin at AD.PTHL.HK with password.
kadmin.local:  listprincs
DESKTOP-K48D6J5$@AD.PTHL.HK
PDC$@AD.PTHL.HK
Administrator at AD.PTHL.HK
DC-MGMT$@AD.PTHL.HK
WIN7-PC$@AD.PTHL.HK
dns-pdc at AD.PTHL.HK
krbtgt at AD.PTHL.HK
Guest at AD.PTHL.HK
bob at AD.PTHL.HK
kadmin.local:  quit
Segmentation fault (core dumped)
[root at pdc samba]#


see above, coredump happened when using kadmin.local, here is log:

Sep 25 18:01:38 pdc kernel: kadmin.local[4814]: segfault at 38 ip
00007f58e7a2b119 sp 00007ffd436760f0 error 4 in samba.so[7f58e7a27000+a000]



On Mon, Sep 25, 2017 at 5:01 PM, luckydog xf <luckydogxf at gmail.com>
wrote:
> 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.
>