Re: segfault in VM

[Chris Andrews <chris@nodnol.org>]

Keir Fraser wrote:
>>Keir Fraser wrote:
>>
>>>Clearly there's some fairly random memory corruption going on, which
>>>then causes segfaults (if the corruption hits code pages) and
>>>filesystem corruption (if the corruption hits buffer-cache pages).
>>
>> >
>>
>>>The "Bailing: not a -ve offset" and "GPF (0004):" messages are almost
>>>certainly just symptoms of executing a corrupted block of code. i.e.,
>>>the bug has already triggered some time ago - probably corrupted a
>>>page of glibc or the kernel.
>>>
>>>It would be interesting to see whether or not this is SMP-related.
>>>It's also interesting that someone said they couldn't reproduce
>>>corruption when using 2.6.7 for the non-privileged guest OSes.
>>
>>I'm seeing this corruption on a single CPU machine, with a single 2.4 
>>guest running but idle. I only ran one 2.6.7 guest, and I didn't give it 
>>any work, but it didn't take any load in the 2.4 guest to provoke problems.
> 
> 
> Do you mean a single 2.4 or 2.6 guest in addition to your 2.4 DOM0?

Yes, that's right. With just the 2.4 domain0 on its own, everything 
seems fine.


Chris.


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