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Re: [Xen-devel] Invalid length provided for SMBIOS data

It's in the public tree now.


On 2/10/06 6:52 pm, "Andrew D. Ball" <aball@xxxxxxxxxx> wrote:

> 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@xxxxxxxxxx> 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.
>>> _______________________________________________
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>>> Xen-devel@xxxxxxxxxxxxxxxxxxx
>>> http://lists.xensource.com/xen-devel

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