net: failure with "limit on … simultaneously alive goroutines is exceeded" on darwin-amd64-race builder

[bcmills]

2020-03-31T18:10:56-2d77d33/darwin-amd64-race

race: limit on 8128 simultaneously alive goroutines is exceeded, dying
FAIL	net	14.688s
FAIL
go tool dist: Failed: exit status 1

This is the first I've seen this error.

[ianlancetaylor]

For those who don't know, the error message is from the race detector.

https://github.com/llvm/llvm-project/blob/master/compiler-rt/lib/sanitizer_common/sanitizer_thread_registry.cpp#L152

[jarreds]

Seeing this error as well. I realize the test suite that's generating this is pretty extraordinary, but it would be great to have a knob we can turn to enable a higher number.

[ianlancetaylor]

@jarreds The race detector code is maintained as part of LLVM, outside of the Go project. That would be the place to ask.

[Deleplace]

Updated link to the race detector error message:

https://github.com/llvm/llvm-project/blob/5db826e4ce63a4d45a4695e5486841d08b86cd24/compiler-rt/lib/sanitizer_common/sanitizer_thread_registry.cpp#L150

[gopherbot]

Change https://golang.org/cl/333529 mentions this issue: runtime/race: update runtime (v3)