runtime: transparent hugepages on linux/mipsle causes segfaults

[josharian]

Split out from #26179. This was observed on the builder through much of the Go 1.11 cycle, until transparent hugepages were disabled. We should investigate and find out whether this is a kernel bug, a Go bug, or what.

cc @aclements @vstefanovic @milanknezevic

[odeke-em]

Thanks for filing this bug @josharian!

Unfortunately we didn't get to look at this bug for Go1.12 so I shall punt it to Go1.13 but I'll also page some more perhaps interested folks @laboger @billotosyr @cherrymui @randall77

[josharian]

cc also @mknyszek in case he is interested