From: "Andrew D. Ball" <aball@us.ibm.com>
To: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
Cc: xen-devel@lists.xensource.com,
"Daniel P. Berrange" <berrange@redhat.com>
Subject: Re: Invalid length provided for SMBIOS data
Date: Mon, 02 Oct 2006 13:52:45 -0400 [thread overview]
Message-ID: <1159811565.27206.27.camel@localhost> (raw)
In-Reply-To: <C1470751.1F0F%Keir.Fraser@cl.cam.ac.uk>
Is this in some sort of staging tree? I don't see it in xen-unstable.hg
yet. If so, can I pull it from somewhere?
Peace.
Andrew
On Mon, 2006-10-02 at 18:13 +0100, Keir Fraser wrote:
> I've checked in a simplification of the SMBIOS code as changeset 11686 in
> xen-unstable. Since this entirely removes the code that computes the table
> size 'ahead of time', it is very likely to fix this bug. We now *definitely*
> write the number of bytes that we actually emitted when constructing the
> tables. So unless the tables themselves are screwed, the length field must
> now surely be correct.
>
> -- Keir
>
> On 2/10/06 15:10, "Andrew D. Ball" <aball@us.ibm.com> wrote:
>
> > This is seriously broken -- I'll write a patch as soon as I can, unless
> > somebody beats me to it :-)
> >
> > Peace.
> > Andrew
> >
> > On Wed, 2006-09-27 at 19:03 +0100, Daniel P. Berrange wrote:
> >> I was running some tests of HVM guests on Fedora Core 6, test3 and came
> >> across a potential issue with SMBIOS data. When running dmidecode in the
> >> guest VMs it reports that the actual SMBIOS data size, does not match
> >> the advertised size. eg
> >>
> >> "Wrong DMI structures length: 439 bytes announced, structures occupy 363
> >> bytes."
> >>
> >> I've tried this in a variety of guest OS (RHEL-3 32-bit, RHEL-3 64-bit,
> >> RHEL-4 64-bit) all the same results. The host is running FC6 test3, but
> >> the bit of code responsible for constructing the SMBIOS tables is identical
> >> to that on the vanilla xen-unstable.hg repository. I'm not familiar
> >> enough with SMBIOS specs / code to determine where the mistake in the
> >> length calculation is though...
> >>
> >> Is anyone else seeing this length mismatch in HVM guests ?
> >>
> >> FYI, we're tracking this as
> >> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=207501
> >>
> >> Regards,
> >> Dan.
> >
> >
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@lists.xensource.com
> > http://lists.xensource.com/xen-devel
>
>
next prev parent reply other threads:[~2006-10-02 17:52 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-27 18:03 Invalid length provided for SMBIOS data Daniel P. Berrange
2006-10-02 14:10 ` Andrew D. Ball
2006-10-02 17:13 ` Keir Fraser
2006-10-02 17:52 ` Andrew D. Ball [this message]
2006-10-03 6:47 ` Keir Fraser
2006-10-03 20:08 ` Daniel P. Berrange
[not found] ` <1159802159.27206.15.camel@localhost>
[not found] ` <20061002154857.GA1730@redhat.com>
2006-10-02 17:49 ` Andrew D. Ball
2006-10-03 14:53 ` Andrew D. Ball
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