From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
Subject: bug#26976: On Hydra,
	offload crashes while trying to build linux-libre source
Date: Thu, 27 Jul 2017 12:14:26 +0200
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To: Mark H Weaver <mhw@netris.org>
Cc: Artyom Poptsov <poptsov.artyom@gmail.com>, 26976-done@debbugs.gnu.org

Hello,

ludo@gnu.org (Ludovic Court=C3=A8s) skribis:

> I=E2=80=99ve pushed a workaround that seems to work (=E2=80=98guix copy=
=E2=80=99 commands that
> previously segfaulted on hydra.gnu.org no longer do):
>
>   https://git.savannah.gnu.org/cgit/guix.git/commit/?id=3D8e469b67f95cfe5=
b95405b503b8ee315fdf8ce66

The workaround has proved to work well for =E2=80=98guix offload=E2=80=99 a=
nd =E2=80=98guix
copy=E2=80=99 so I=E2=80=99m closing this bug on our side.

In Guile-SSH though, I think there=E2=80=99s still the potential for finali=
zers
getting called in a separate thread and triggering the issue we=E2=80=99ve =
seen
here.  Am I right, Artyom?

If I=E2=80=99m not mistaken, that calls for a fix as described in
<https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D26976#37>, namely
protecting libssh objects with mutexes.

Ludo=E2=80=99.