We are running RHEL6.7 and CentrifyDC - client 5.1.0-497. The adclient frequently crashes and doesn't let anyone (including the service/admin accounts that are not AD authenticated) to login. Used serial console too but with success. Red Hat was contacted and analyzed the core dump for this issue. Per Red Hat the problem is known to them and may be addressed by Centrify. Below is the reference provided by Red Hat.
System unresponsive after Centrify's authentication suite daemon (adclient) crashes
https://access.redhat.com/solutions/1575493
Per Red Hat article the Root Cause seems to be :
The issue is an user space dead lock between a crashed adclient thread group and abrt-hook-ccpp, the process which writes the core dump data from the crashed adclient in case abrt-ccpp service is enabled. The abrt-hook-ccpp process can get stuck waiting for data from a socket from adclient (/var/centrifydc/daemon2), however it'll never finish as adclient is stopped/crashed and in turn also will not exit until core dump is written. Since adclient is used for authentication service (login, etc.), this can result in a perceived unresponsive or dead system.
So given the above information, any patches/solution availble for this problem?
Thanks.