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Re: [Qemu-devel] qcow2 snaphot loading

From: Riku Voipio
Subject: Re: [Qemu-devel] qcow2 snaphot loading
Date: Tue, 24 Mar 2009 10:16:08 +0200
User-agent: Mutt/1.5.18 (2008-05-17)

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".


> then, back in block.c (bdrv_check_byte_request):


> 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...

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