TX2 nvgpu lockup

@AastaLLL @WayneWWW

Hi. We are facing this gpu lockup issue on our current product which is based on 28.2. I can update to the newer release 32.4.4 with some difficulty (seem to have some issues that I need to debug). However I do need some confidence in the release.
Could you give me more information on the issue?
Is the cause of the lockup known?
Has the issue been fixed?
Is it possible to backport a fix to R28.2?

As you can see I have hit a similar bug in R32.4.2 - is this the same issue?
Is the issue related to this issue? If so, is the best option to go to R32.3.1 release?

Thanks,

Akmal