runtime:cpu2: TestCgoCCodeSIGPROF failures

[gopherbot]

#!watchflakes
default <- pkg == "runtime:cpu2" && test == "TestCgoCCodeSIGPROF"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestCgoCCodeSIGPROF
=== PAUSE TestCgoCCodeSIGPROF

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "runtime:cpu2" && test == "TestCgoCCodeSIGPROF"

2025-09-22 18:37 gotip-linux-loong64 go@9b2d39b7 runtime:cpu2.TestCgoCCodeSIGPROF [SKIP] (log)

=== RUN   TestCgoCCodeSIGPROF
=== PAUSE TestCgoCCodeSIGPROF

— watchflakes

[randall77]

@golang/loong64