Re: [Qemu-devel] qcow2 snaphot loading

[Clemens Kolbitsch]

On Tuesday 24 March 2009 09:16:08 Riku Voipio wrote:
> On Mon, Mar 23, 2009 at 05:45:08PM +0100, Clemens Kolbitsch wrote:
> > I just upgraded from rev. 6600 to head and ran into problems loading
> > snapshots (I also checked this with the 0.10.1 release on the homepage)
> > because the old revision keeps crashing my Xserver from time to time.
> >
> > "Error -22 when loading VM state".
>
> ..snip..
>
> > then, back in block.c (bdrv_check_byte_request):
>
> ...snip...
>
> > and snapshot loading exists with the error above. In case this is an
> > error, could someone have a look? Maybe, there is just no backwards
> > compatibility to old base images (which would be too bad, but at least
> > I'd know the problem).
>
> this was broken in svn commit 6677:
>
>       Fix CVE-2008-0928 - insufficient block device address range checking
> (Anthony Liguori)
>
> savevm writes to the block device after data...

Thanks for the quick reply! But...

... ehem... the bug was never fixed up to the head (6883) revision (nor in the 
official version on the homepage) ?!

If so, is there a patch to it? If not... well, the bug still exists! :(