Created attachment 1904134 [details]
Stack trace of abort

Description of problem:
libnss_sss is repeatedly aborting on an assertion in pthread_mutex_lock.  This is happening in mono during activity involving network access.

Version-Release number of selected component (if applicable):
2.7.3-1

How reproducible:
Frequent in my particular application.

Steps to Reproduce:
1. Run the duplicati backup program (runs within mono)
2. Attempt a network backup

Actual results:
mono aborts with a pthread_mutex_lock assertion fail.

Expected results:
Successful backup.

Additional info:
Reverting to sssd-client version 2.5.2-5 fixes the problem.