Re: swiftmq 7.5.1 release notes

This is certainly not a problem with SwiftMQ but with the hotspot JVM:

#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  SIGBUS (0xa) at pc=0xffffffff7540b718, pid=24487, tid=27
#
# Java VM: Java HotSpot(TM) 64-Bit Server VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# j  java.lang.String.<init>([BLjava/lang/String;)V+0
#

So you might better look to upgrade the JVM, if possible.

SwiftMQ release notes are here.