We need the output of "sh stack" to verify the cause of the crash; however, my guess is that this is potentially a new bug, and so you may want to open a case with the TAC so that they can submit a new bug report if necessary, or get you the latest 12.2T image that may have a fix.
Yes, this looks like a new bug. I would suggest you open a case with the TAC to try the latest 12.2T code, otherwise a bug report will need to be submitted. It will help the TAC is you can verify whether or not you can reproduce the problem, and what action may be causing the crash.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...