[xml/sgml-pkgs] Bug#742258: libxml2: [wheezy] race condition causing crash in gnome-shell

[Josselin Mouette]

Package: libxml2
Version: 2.8.0+dfsg1-7+nmu2
Severity: important
Tags: wheezy patch

Hi,

I have found the probable cause of a number hard-to-reproduce,
hard-to-debug gnome-shell failures on wheezy, especially when a11y is
enabled.
The problem is identical to LP#962604 but the crash can happen in a wide
number of libxml2 functions.

It is caused by a race condition in libxml2 which can occur only when
some functions are used several times from different threads.

The bug is fixed upstream:
https://git.gnome.org/browse/libxml2/commit/?id=7a2215dbcd4882e45f618c5f78f8d975b7c47ed3
I’m attaching the patch.

Since it’s mostly about GNOME, I can ask the release team and do the
upload myself if you want.

Thanks for considering.
-- 
.''`.      Josselin Mouette
: :' :
`. `'
  `-
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