9d5a2c1f-d9d0-472b-8894-7d79b2235f58.md

uuid	url	categories	company	product
9d5a2c1f-d9d0-472b-8894-7d79b2235f58	https://web.archive.org/web/20161230103247/https://research.microsoft.com/en-us/um/people/mbj/Mars_Pathfinder/Authoritative_Account.html	postmortem	NASA

NASA's Mars Pathfinder spacecraft experienced system resets a few days after landing on Mars (1997). Debugging features were remotely enabled until the cause was found: a priority inversion problem in the VxWorks operating system. The OS software was remotely patched (all the way to Mars) to fix the problem by adding priority inheritance to the task scheduler.