runtime: ReadMemStats fatal error: mappedReady and other memstats are not equal [1.21 backport] #64410
Description
@mknyszek requested issue #64401 to be considered for backport to the next 1.21 minor release.
@gopherbot Please open backport issues for Go 1.20 and Go 1.21.
I think it should just be backported. This can cause crashes in correct programs without a workaround, and the fix is very safe.