ndr_pull_share_mode_lock error after Upgrade from 4.1.19 to 4.2.7

[Dr. Hansjörg Maurer]

Hi

I upgraded a Centos-6 x86_64 based samba HA Cluster from
 4.1.19 to 4.2.7 with GPFS as storage backend

The packages are  self compiled.

During the upgrade I replaced the Centos CTDB (2.5.1) with the buildin
samba ctdb
It seems to work fine, client can access data, but when a client opens a
file for example with a text editor, samba logs


[2015/12/20 12:57:43.218450,  1]
../source3/locking/share_mode_lock.c:141(parse_share_modes)
  ndr_pull_share_mode_lock failed: Buffer Size Error
[2015/12/20 12:57:43.223911,  1] ../librpc/ndr/ndr.c:578(ndr_pull_error)
  ndr_pull_error(11): Pull bytes 4 (../librpc/ndr/ndr_basic.c:150)
[2015/12/20 12:57:43.223937,  1]
../source3/locking/share_mode_lock.c:141(parse_share_modes)
  ndr_pull_share_mode_lock failed: Buffer Size Error


Do you have an idea, what can cause this error-message and what I can do
to trace it down?

Regards

Hansjörg


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