GNU bug report logs - #56606
29.0.50; recent master fails with "creating pipe: too many open files"

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Message #28 received at 56606-done <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Stephen Leake <stephen_leake <at> stephe-leake.org>
Cc: 56606-done <at> debbugs.gnu.org
Subject: Re: bug#56606: Acknowledgement (29.0.50; recent master fails with
 "creating pipe: too many open files")
Date: Tue, 19 Jul 2022 05:38:40 +0300

> From: Stephen Leake <stephen_leake <at> stephe-leake.org>
> Cc: 56606 <at> debbugs.gnu.org
> Date: Mon, 18 Jul 2022 17:04:05 -0700
> 
> Eli Zaretskii <eliz <at> gnu.org> writes:
> 
> >> Cc: 56606 <at> debbugs.gnu.org
> >> Date: Sun, 17 Jul 2022 13:20:12 +0300
> >> From: Eli Zaretskii <eliz <at> gnu.org>
> >> 
> >> > From: Stephen Leake <stephen_leake <at> stephe-leake.org>
> >> > Date: Sun, 17 Jul 2022 02:42:04 -0700
> >> > 
> >> > On emacs-devel, Eli said:
> >> > 
> >> > AFAICT, this loop in deactivate_process:
> >> > 
> >> >   /* Beware SIGCHLD hereabouts.  */
> >> > 
> >> >   for (i = 0; i < PROCESS_OPEN_FDS; i++)
> >> >     close_process_fd (&p->open_fd[i]);
> >> > 
> >> > doesn't close the last of the 4 descriptors opened by the 2 emacs_pipe
> >> > calls in make-pipe-process.  It calls 'close' with the right value,
> >> > and close returns zero, but the pipe stays open.  In Emacs 28, this
> >> > same loop successfully closes the descriptor.  I don't know why.
> >> > 
> >> > Perhaps bisecting could help.
> >> 
> >> I think commit a81669c could be the culprit.
> >
> > I hope I fixed this now on master.
> >
> 
> Yes, it is fixed, by 637436970f34f860d50f73a514b3bafd0c5cace7.

Thanks, I'm therefore closing this bug.

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