On 28/05/15 13:44, Stanislav German-Evtushenko wrote:
Eneko,
> I'm not kernel/IO expert in any way, but I think this test program has a race
condition, so it is not helping us diagnose the problem.
> We're writing to buffer x while it is in use by write syscall. This is
plainly wrong on userspace.
Yes, and this is exactly what is happening inside QEMU-KVM process and this is
what I wanted to demonstrate.
Ok, but this doesn't demonstrate the problem in qemu-kvm; only that
we're getting the same behaviour. Please note that I'm not saying there
isn't any bug in qemu; we must find a way to prove the bug, either
pointing to source code or with a correct test program (if you have done
so I missed it sorry).
Cheers,
Eneko
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