[Milhouse]

Yes this particular crash has only happened once. The assert that fails is this one https://github.com/sahlberg/libnfs/blame.../pdu.c#L92

Are you able to re-test #0802 and confirm if this also crashes? If it has the same problem as #0803 (to be honest, I'd expect it to, assuming the problem is due to libnfs changes) then it will result in a segfault as non-debug enabled builds don't include the assert() statements, so you're most likely barrelling into whatever issue the assert is trying to detect.

Also, if you're able to reproduce the crash in the latest #0807 build, it would be worth trying RPi2 debug build #0807x which has the recent libnfs changes reverted (ie. libnfs HEAD is 68941809) and see if there is still a problem - this would definitely rule libnfs in or out. And since #0807x is debug-enabled, the asserts will be enabled.