CVE-2012-4508 kernel: ext4: AIO vs fallocate stale data exposure
[dannf: backported to Debian's 2.6.32]

According to Ben :
> The original upstream commits were c278531d,
> 60d4616f and (most importantly)
> dee1f973 by Dmitry Monakhov
> <dmonakhov@openvz.org>.  They were backported into the RHEL 6 kernel by
> Lukas Czerner, according to its changelog.  Dann got this version from
> Oracle's redpatch repository, where, if I understand rightly, Jamie Iles
> attempted to regenerate Lukas's patch(es).

Cc: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>