Re: Git pull stuck when Trace2 target set to Unix Stream Socket

[Taylor Blau <me@ttaylorr.com>]

On Mon, Apr 13, 2020 at 07:19:03PM +0200, Son Luong Ngoc wrote:
> Hi Taylor,
>
> Thanks for the swift reply.
>
> > On Apr 13, 2020, at 18:00, Taylor Blau <me@ttaylorr.com> wrote:
> > I doubt that this is important (for a reason that I'll point out below),
> > but it looks like your invocation here is malformed with the trailing
> > pipe character.
> >
> > Did you mean to redirect the output of rm away? If so, '2>&1 >/dev/null'
> > will do what you want.
> It was an emailing mistake. I meant to write
> > rm /tmp/git_trace.sock || true

For what it's worth, 'rm -f' would suffice, too, but it doesn't matter.

> So that the command is reproducible on repeated run.
> I must have deleted the remaining part by mistake.
>
> > Odd. From my memory, trace2 will give up trying to connect to the socket
> > (disabling itself and optionally printing a warning) if 'socket(2)' or
> > 'connect(2)' set the error bit. My guess above is that you don't have a
> > listening socket (because your shell is waiting for you to close the
> > '|'), so there's no connection to be made.
> There is definitely connection still, as I can still receive more events after interupting the stuck git command by Ctrl-C.
>
> > Odd. What version of Git are you using? Your description makes it
> > sound like it may be a bug, so I'd be curious to hear Jeff's
> > interpretation of things, too.
> 2.26.0 built from Master git/git
>
> For more info, I have created a paste to demonstrate the bug
> https://gist.github.com/sluongng/e14563e4ce3cc9545781ecd5a95169f6
> In which, I run `git pull origin` and `git version` on a relatively stale https://gitlab.com/gitlab-org/gitlab.git local copy.
>
> You can get more information from the trace in that paste.
> I have annotated the moment which the stuck happened with `It stucks HERE` phrase so look for it.

Hmm. It sounds like maybe there is a bug. If Jeff doesn't have time to
take a look, I'll try to figure out what's going on here.

> Cheers,
> Son Luong.

Thanks,
Taylor