linux-kernel - Re: [V9fs-developer] 9p: BUG: unable to handle kernel paging request at ffff880035698000

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Date:	Wed, 14 Mar 2012 21:12:25 +0200
From:	Sasha Levin <levinsasha928@...il.com>
To:	"M. Mohan Kumar" <mohan@...ibm.com>
Cc:	ericvh@...il.com, rminnich@...dia.gov, lucho@...kov.net,
	v9fs-developer@...ts.sourceforge.net,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Dave Jones <davej@...hat.com>
Subject: Re: [V9fs-developer] 9p: BUG: unable to handle kernel paging request
 at ffff880035698000

On Wed, Mar 14, 2012 at 7:35 AM, M. Mohan Kumar <mohan@...ibm.com> wrote:
> On 02/21/2012 09:53 PM, Sasha Levin wrote:
>>
>> Hi,
>>
>> I was using the KVM tool for tests with trinity on top of a virtio-9p
>> filesystem, and started seeing the BUGs below when I've put some pressure on
>> the 9p fs (not much, just started writing the logs from trinity to a 9p fs).
>
> Hi Sasha,
>
> You mentioned about testing with trinity, Where can I find this trinity ? Is
> is some test suite ? Were you running 9p as root?

I was using the fuzzer linked by davej in the previous mail.

9p was the root partition, and there was another 9p partition mounted
on top of that root 9p.

> Which kernel version you were using? Is this bug still reproducible?

It was running the linux-next kernel of the day I sent the mail, I
don't see it happening any more - but it could be because a lot of new
kernel bugs showed up and they happen before this 9p issue happens.
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