Re: Data corruption in guest using KVM

[Aurelien Jarno <aurelien-rXXEIb44qovR7s880joybQ@public.gmane.org>]

On Sun, Jul 22, 2007 at 08:34:37PM +0300, Avi Kivity wrote:
> Aurelien Jarno wrote:
> > On Sun, Jul 22, 2007 at 04:46:19PM +0300, Avi Kivity wrote:
> >   
> >> If you do happen to get a same-size corruption, that may tell us more.
> >>
> >>     
> >
> > I have just got one same-size corruption building glibc 2.6 on 
> > GNU/kFreeBSD i386 (32-bit nonpae).
> >
> > One byte at address 0x9000 has been replaced by 0x00. Please find the
> > good and the bad file attached.
> >
> >   
> 
> Good.  We have one or two cross-page-boundary bugs.  The
> corruption-chase branch already fixes one (which is much more likely to
> be triggered by FreeBSD than Linux, if I understand the FreeBSD VM
> correctly).

I have got since then 3 more failures, all at page boundaries, mangling
1 to 3 bytes.

I am currently trying the patch from the corruption-chase branch.

-- 
  .''`.  Aurelien Jarno	            | GPG: 1024D/F1BCDB73
 : :' :  Debian developer           | Electrical Engineer
 `. `'   aurel32-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org         | aurelien-rXXEIb44qovR7s880joybQ@public.gmane.org
   `-    people.debian.org/~aurel32 | www.aurel32.net

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