.A deadlock no longer occurs when using SASL binds to Directory Server
Previously, a SASL bind to Directory Server could attempt using callbacks that were modified during the connection process. Consequently, a deadlock occurred, and Directory Server could terminated unexpectedly. With this update, the server uses a connection lock that prevents modifying IO layers and callbacks while they are in use. As a result, the deadlock no longer occurs when using SASL binds.
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 (389-ds-base bug fix and enhancement update), 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://access.redhat.com/errata/RHBA-2020:3894