On Fri, Oct 17, 2025 at 06:52:49PM +0900, Lauri Tirkkonen wrote:

quoted

If I unset SSH_AUTH_SOCK in my environment, then the test consistently
fails. But I'm somewhat amazed that nobody has complained about this
before. Surely somebody somewhere (especially CI!) is running t7528
without SSH_AUTH_SOCK set in the environment. Which makes wonder if I'm
missing something.

I believe the issue surfaced only now because prior to OpenSSH 10.1,
ssh-agent would put its socket in /tmp by default, not under $HOME. See
https://www.openssh.com/txt/release-10.1

Ah, of course. That explains it perfectly, thanks. So we're going to get
lots more reports as people upgrade. :)

We saw this failure in CI on Alpine Linux and worked around by adding -T
to the ssh-agent invocation in this test, but I suppose that won't work
for earlier releases of OpenSSH.

Yeah. We could either do something like "ssh-agent -T || ssh-agent", or
we could go with "ssh-agent -a" (which has been around since 2002, but
does raise the potential relative-path issue).

-Peff