checkout for the FFDC information. It will surely exist either in the .nfy file, diag.log, or will create some trap file or coredumps. Once we have some bit of information from the ffdc, it will be easy to understand.
I will recommend you to open a PMR in such situation as 9.7 --FP4 is very recent there can be a possible bug which might not have been detected before the release.