[Cluster-devel] [PATCH][GFS2] Bug 586009 - CVE-2010-1436 kernel: oops while cp from ext3 to gfs2 [rhel-6.0]

[Steven Whitehouse]

Hi,

Now in the -nmw git tree. Thanks,

Steve

On Fri, 2010-05-07 at 17:50 -0400, Abhijith Das wrote:
> This is the upstream/rhel6 fix for this bug. This patch differs
> from the RHEL5 fix (555754) which simply writes to the 8-byte 
> value field of the quota. In upstream/rhel6 quota code, we're
> required to write the entire quota (88 bytes) which can be split
> across a page boundary. We check for such quotas, and read/write
> the two parts from/to the corresponding pages holding these parts.
> 
> With this patch, I don't see the bug anymore using the reproducer
> in bz 555754. I successfully ran a couple of simple tests/mounts/
> umounts and it doesn't seem like this patch breaks anything else.
> 
> Resolves: rhbz#586009
> Signed-off-by: Abhi Das <adas at redhat.com>