As was done for RHEL 8.3 and GTS10, rebase valgrind to the latest upstream. This time 3.16.1 which includes fixes for two backported fixes compared to 3.16.0 in GTS10.
Thank you for the docs update, Mark. I've noticed that you've reviewed and approved the RHEL 8.3 release note text with the very same changes for Zuzana Zoubkova. If you don't mind, I'll reuse the same wording in the DTS 10 changelog.
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 (new packages: devtoolset-10-valgrind), 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/RHEA-2020:5287