Re: [Xen-devel] possible I/O emulation state machine issue

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 22/03/18 15:12, Jan Beulich wrote:
> Paul,
>
> our PV driver person has found a reproducible crash with ws2k8,
> triggered by one of the WHQL tests. The guest get crashed because
> the re-issue check of an ioreq close to the top of hvmemul_do_io()
> fails. I've handed him a first debugging patch, output of which
> suggests that we're dealing with a completely new request, which
> in turn would mean that we've run into stale STATE_IORESP_READY
> state:
>
> (XEN) d2v3: t=0/1 a=3c4/fed000f0 s=2/4 c=1/1 d=0/1 f=0/0 p=0/0 
> v=100/ffff831873f27a30
> (XEN) ----[ Xen-4.10.0_15-0  x86_64  debug=n   Tainted:  C   ]----

Irrespective of the issue at hand, can testing be tried with a debug
build to see if any of the assertions are hit?

~Andrew

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