linux-kernel - Re: Linux 2.6.37-rc1 (floppy module load: no device found)

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Message-ID: <4CD4A272.8000000@oracle.com>
Date:	Fri, 05 Nov 2010 17:33:54 -0700
From:	Randy Dunlap <randy.dunlap@...cle.COM>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	Jens Axboe <jaxboe@...ionio.com>, Vivek Goyal <vgoyal@...hat.com>,
	David Miller <davem@...emloft.net>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux 2.6.37-rc1 (floppy module load: no device found)

On 11/05/10 16:36, Linus Torvalds wrote:
> On Fri, Nov 5, 2010 at 4:03 PM, Randy Dunlap <randy.dunlap@...cle.com> wrote:
>> On 11/05/10 15:10, Linus Torvalds wrote:
>>>
>>> Randy, is this one also related to that ipv6 percpu list corruption?
>>> IOW, does it go away with
>>>
>>>   http://patchwork.ozlabs.org/patch/69939/
>>>
>>> like one of your other reports did?
>>
>> The list_debug.c message goes away, but it still gets the GP fault.
> 
> Ok. I think there's a separate floppy.c bug introduced in commit
> 488211844e0c ("floppy: switch to one queue per drive instead of
> sharing a queue").
> 
> We do "put_disk()" on the disk device _before_ we then clean up the
> queue associated with that disk.
> 
> So maybe this trivial patch is in order?
> 
> Again - UNTESTED. Jens, Vivek?

That survives load/unload 3 times.

Tested-by: Randy Dunlap <randy.dunlap@...cle.com>


-- 
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
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