linux-kernel - Re: 2.6.24-rc4-mm1 kobject changes broken with hvcs driver on powerpc

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Message-ID: <4758A1E7.9010201@linux.vnet.ibm.com>
Date:	Fri, 07 Dec 2007 06:59:11 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	Badari Pulavarty <pbadari@...il.com>
CC:	Greg KH <greg@...ah.com>,
	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	lkml <linux-kernel@...r.kernel.org>, rsa@...ibm.com,
	apw@...dowen.org, balbir@...ibm.com
Subject: Re: 2.6.24-rc4-mm1 kobject changes broken with hvcs driver on powerpc

Badari Pulavarty wrote:
> On Fri, 2007-12-07 at 00:28 +0530, Balbir Singh wrote:
>> Greg KH wrote:
>>
>>>> Why release the spinlock here? It's done after the count is incremented.
>>>> This patch does not seem correct.
>>> Doh, you are correct, I'll make sure that I fix this up before applying
>>> it.
>>>
>>> thanks,
>>>
>>> greg k-h
>> Hi, Greg,
>>
>> I ran some tests with the fixed up version of this patch and the system
>> fails to come up.
>>
>> I see the WARN_ON in lib/kref.c:33 and the system fails to boot beyond
>> that point. I have not yet found time to debug it though.
> 
> 
> Are you running into same issue, I am getting on my machine ? Are you
> using IPR driver ?
> 

Badari,

I am unable to get past lib/kref.c:33 and cut here. The machine just
stalls, I see no output at the console. I don't get a backtrace like you
do, even with xmon enabled :(

> Thanks,
> Badari
> 
> 


-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL
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