linux-kernel - Re: [BUG] 2.6.23-rc3-mm1 - kernel BUG at net/core/skbuff.c:95!

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Message-ID: <46CDD904.3050607@linux.vnet.ibm.com>
Date:	Fri, 24 Aug 2007 00:29:16 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	Kay Sievers <kay.sievers@...y.org>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, Greg KH <greg@...ah.com>
Subject: Re: [BUG] 2.6.23-rc3-mm1 - kernel BUG at net/core/skbuff.c:95!

Kay Sievers wrote:
> On Thu, 2007-08-23 at 00:34 +0530, Balbir Singh wrote:
>> Kay Sievers wrote:
>>>> gargh, sorry, that's probably due to my screwed up attempt to fix Kay's
>>>> screwed up
>>>> gregkh-driver-driver-core-change-add_uevent_var-to-use-a-struct.patch.
>>>>
>>>> Kay sent an update patch but it didn't arrive in time.
>>>>
>>>> Greg, if you haven't yet merged that, please do so asap?
>>>>
>>>> So what _should_ this:
>>>>
>>>> --- a/arch/powerpc/kernel/vio.c~fix-4-gregkh-driver-driver-core-change-add_uevent_var-to-use-a-struct
>>>> +++ a/arch/powerpc/kernel/vio.c
>>>> @@ -373,7 +373,7 @@ static int vio_hotplug(struct device *de
>>>>  	dn = dev->archdata.of_node;
>>>>  	if (!dn)
>>>>  		return -ENODEV;
>>>> -	cp = of_get_property(dn, "compatible", &length);
>>>> +	cp = of_get_property(dn, "compatible", &env->buflen);
>>>>  	if (!cp)
>>>>  		return -ENODEV;
>>>>  
>>>> _
>>>>
>>>> have done?
>>> Does replacing "&length" with "NULL" work? That's what's in the updated
>>> patch.
> 
>> replacing &length with NULL does not work for me. I get a message saying that
>> init terminated with signal 7.
> 
> Hi Balbir,
> ugh, I can't see what's going wrong here.
> 
> Care to just "return 0" for the whole function, and try again? Just to
> rule out that this is the cause of the problem.
> 

Hi, Kay,

I just confirmed, your NULL fix looks correct. The init got signal 7
problem occurs even if uevent_add_var() is commented out. I suspect that
we are seeing a machine exception, I'll debug that part now.

> Thanks,
> Kay
> 


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