To begin the analysis of the potential hang condition use the IPCS VERBEXIT GRSTRACE command against the dump. Search for the MAJOR names SYSZTIOT and SYSIEA01. The resource which ABDUMP detected the possible deadlock situation for will have multiple tasks (TCBs) listed for the same MINOR name.
The information needed to debug the user ABEND will also be available within the dump. However, note that the dump will contain sensitive installation data since fetch protected storage is included in an SVC dump.