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xen-devel
RE: [Xen-devel] [HVM] Corruption of buffered_io_page
> read_pointer is the first member of buffered_ioreq_t, so on the hunch
that
> the corruption was occuring by something other than a wrong value
actually
> being written into the structure member, either overflowing a previous
> structure in memory or a pointer var mistake. I thus added a 64bit
dummy
> member to "pad" the buffered_ioreq_t structure at the start, and as I
had
> suspected, the bad value does get written into this dummy member
rather
> than the read_pointer. I haven't (yet) been able to track down what it
is
> that actually writes the bad value, and any help finding it would be
> welcome.
What compiler are you using? What guest OS? Are you using PV or emulated
drivers? Any idea if there are particular workloads that provoke the
problem?
Best,
Ian
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