Re: bin/60275 (sh(1): race condition in signal handling on background subshell fork)

[riastradh%NetBSD.org@localhost]

Synopsis: sh(1): race condition in signal handling on background subshell fork

State-Changed-From-To: feedback->needs-pullups
State-Changed-By: riastradh%NetBSD.org@localhost
State-Changed-When: Tue, 19 May 2026 00:53:47 +0000
State-Changed-Why:
Thanks, I applied the following two changes to netbsd-11, and the test
passed over 10k trials (without the `sleep 0.01' part):

https://mail-index.netbsd.org/source-changes/2026/05/17/msg162060.html
https://mail-index.netbsd.org/source-changes/2026/05/18/msg162071.html

Haven't tried 10 or 9 yet but I would guess the same fix is needed.

(This isn't really an exotic issue: I hit this in practice as part of
the automatic tests for our new repository infrastructure!  And I've
been hitting it regularly for a while, causing one test to sporadically
fail, but only just investigated this week.)