Message-ID: <46CCA65B.4030201@linux.vnet.ibm.com>
Date: Thu, 23 Aug 2007 02:40:51 +0530
From: Balbir Singh <balbir@linux.vnet.ibm.com>
Reply-To: balbir@linux.vnet.ibm.com
Organization: IBM
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To: Kay Sievers <kay.sievers@vrfy.org>
CC: Andrew Morton <akpm@linux-foundation.org>,
       Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>,
       linux-kernel@vger.kernel.org, Greg KH <greg@kroah.com>
Subject: Re: [BUG] 2.6.23-rc3-mm1 - kernel BUG at net/core/skbuff.c:95!
References: <20070822020648.5ea3a612.akpm@linux-foundation.org> <46CC33EC.1040803@linux.vnet.ibm.com> <20070822085002.8a116f72.akpm@linux-foundation.org> <1187805493.5303.11.camel@lov.localdomain> <46CC88B3.6080000@linux.vnet.ibm.com> <1187816149.5303.44.camel@lov.localdomain>
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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.
> 

Same here.. I went through the new add_uevent_var() code. The only change
I found was that instead of using env->envp[env->envp_idx] as an argument
to vsnprintf(), the code looks semantically the same. Even with those
changes, the assignment of env->envp[env->envp_idx++] to &env->buf[
env->buflen] makes the semantics look similar.

I verified that the arguments to add_uevent_var() are sane. So at this
point, I am a little lost. I'll debug further and see if the socket
allocation is sufficient.

> Care to just "return 0" for the whole function, and try again? Just to
> rule out that this is the cause of the problem.
> 
> Thanks,
> Kay
> 


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