There is currently a use after free error in the vfs_glusterfs AIO code, that can cause a crash, under high load.
The automated tests are executed on the build samba-4.2.4-15.Multi-threaded I/O from single client and multiple client is also executed. 100 connections from smbclient ha sbeen opened to read a single file but no smbd crash is seen. Marking the BZ to verified.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHSA-2016-0447.html