@ianlancetaylor requested issue #42207 to be considered for backport to the next 1.14 minor release.

@gopherbot Please open backport issues.

This bug can cause a deadlock for programs that create threads in C code such that those threads call into Go code, if a signal is received at the wrong time. There is no workaround.

Note that CL 265759 had a bug in the test, and that CL 265778 (a test-only change) is also required.