From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: io.c:164:d25v0 Weird HVM ioemulation status 1.
 domain_crash called from io.c:165
Date: Fri, 24 Apr 2015 09:31:28 -0400
Message-ID: <20150424133128.GB9192@l.oracle.com>
References: <286185080.20150424140236@eikelenboom.it>
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To: Sander Eikelenboom <linux@eikelenboom.it>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>, Paul Durrant <paul.durrant@citrix.com>, xen-devel <xen-devel@lists.xenproject.org>
List-Id: xen-devel@lists.xenproject.org

On Fri, Apr 24, 2015 at 02:02:36PM +0200, Sander Eikelenboom wrote:
> Hi, 
> 
> On Xen-unstable I encountered this non stopping logspam while trying to shutdown an HVM domain with 
> pci-passthrough:
> 
> (XEN) [2015-04-24 11:55:47.802] io.c:164:d25v0 Weird HVM ioemulation status 1.
> (XEN) [2015-04-24 11:55:47.802] domain_crash called from io.c:165
> (XEN) [2015-04-24 11:55:47.802] io.c:164:d25v0 Weird HVM ioemulation status 1.

And I saw as well with the latest unstable. Hadn't tried to narrow it down.

> (XEN) [2015-04-24 11:55:47.802] domain_crash called from io.c:165
> (XEN) [2015-04-24 11:55:47.802] io.c:164:d25v0 Weird HVM ioemulation status 1.
> (XEN) [2015-04-24 11:55:47.802] domain_crash called from io.c:165
> (XEN) [2015-04-24 11:55:47.802] io.c:164:d25v0 Weird HVM ioemulation status 1.
> (XEN) [2015-04-24 11:55:47.802] domain_crash called from io.c:165
> (XEN) [2015-04-24 11:55:47.802] io.c:164:d25v0 Weird HVM ioemulation status 1.
> (XEN) [2015-04-24 11:55:47.802] domain_crash called from io.c:165
> (XEN) [2015-04-24 11:55:47.802] io.c:164:d25v0 Weird HVM ioemulation status 1.
> (XEN) [2015-04-24 11:55:47.802] domain_crash called from io.c:165
> (XEN) [2015-04-24 11:55:47.802] io.c:164:d25v0 Weird HVM ioemulation status 1.
> (XEN) [2015-04-24 11:55:47.802] domain_crash called from io.c:165
> (XEN) [2015-04-24 11:55:47.802] io.c:164:d25v0 Weird HVM ioemulation status 1.
> (XEN) [2015-04-24 11:55:47.802] domain_crash called from io.c:165
> (XEN) [2015-04-24 11:55:47.802] io.c:164:d25v0 Weird HVM ioemulation status 1.
> (XEN) [2015-04-24 11:55:47.802] domain_crash called from io.c:165
> (XEN) [2015-04-24 11:55:47.802] io.c:164:d25v0 Weird HVM ioemulation status 1.
> (XEN) [2015-04-24 11:55:47.802] domain_crash called from io.c:165
> (XEN) [2015-04-24 11:55:47.802] io.c:164:d25v0 Weird HVM ioemulation status 1.
>  etc. etc. etc.
> 
> The domain had shutdown perfectly well on earlier occasions, but this time it
> kept running. It did drop from it's assigned 3 vpcu's to 1 vpcu, but it stalled 
> there.
> The log spam only stopped by destroying the guest.
> 
> Since i haven't seen it before, it's probably hard to replicate.
> 
> --
> Sander
> 
> 
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