runtime/pprof: flaky test crash

[gopherbot]

#!watchflakes
post <- pkg == "runtime/pprof" && test == "" && !`panic: test timed out`

Bug automatically created to track these flakes.

— watchflakes

[gopherbot]

Found new matching flaky dashboard failures for:

#!watchflakes
post <- pkg == "runtime/pprof" && test == "" && !`panic: test timed out`

2022-09-06 15:44 linux-amd64-longtest go@32f68b5a runtime/pprof (log)

signal: segmentation fault (core dumped)

— watchflakes

[bcmills]

Duplicate of #54976