[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Xen 4.0.0x allows for data corruption in Dom0
On 03/09/2010 01:18 AM, James Harper wrote: >>> I can't think of a Xen failure-mode which would cause these symptoms >>> without also being massively obvious in other cases. (But "I can't >>> think of..." is where all the best bugs hide.) >>> >> >> But the corruptions always happen in 32-bytes chunks, which might >> suggest it's not a page-related problem (e.g. wrongly re-used page), > as >> in that case we would be observing (at least sometimes) much bigger >> chunks of corrupted data, I think. > > Based on your hex dump output, it appears to be the first 32 bytes of a > page, which does lend itself to the idea that it's a page allocated for > something with only the first 32 bytes used. > > You've stated that you are no longer set up to reproduce it, which is > unfortunate. If you find yourself in a position to try it again there > are bunch of things you could try to figure out on which end of the copy > the problem lies. > But everybody can try it with the kernels I provided, right? I'm not the only one person, who can do this... j. Attachment:
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