linux-kernel - Re: linux-next: build warning after merge of the cifs tree

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Date:	Tue, 19 Oct 2010 10:48:10 -0500
From:	Shirish Pargaonkar <shirishpargaonkar@...il.com>
To:	Jeff Layton <jlayton@...ba.org>
Cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	Steve French <smfrench@...il.com>, linux-cifs@...r.kernel.org,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: linux-next: build warning after merge of the cifs tree

On Tue, Oct 19, 2010 at 8:13 AM, Jeff Layton <jlayton@...ba.org> wrote:
> On Tue, 19 Oct 2010 16:21:20 +1100
> Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
>> Hi Steve,
>>
>> On Fri, 24 Sep 2010 13:55:31 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>> >
>> > After merging the irqflags tree, today's linux-next build (powerpc
>> > ppc64_defconfig) produced this warning:
>> >
>> > fs/cifs/sess.c: In function 'CIFS_SessSetup':
>> > fs/cifs/sess.c:595: warning: unused variable 'blob_len'
>> >
>> > Introduced by commit 15f6bdfb9914b0c41848f874719911ba053be931 ("cifs
>> > NTLMv2/NTLMSSP ntlmv2 within ntlmssp autentication code").
>> > CONFIG_CIFS_UPCALL is not set in this build.
>>
>> I am still getting this ...
>>
>
> Yep. Looks clearly broken. blob_len is also declared twice in that
> function which is just plain wrong. What probably makes the most sense
> is to make it a u16 and get rid of the second declaration lower in the
> function. But, there's another semi-related problem here too...
>
> blob_len gets assigned the return value of build_ntlmssp_auth_blob.
> That function however doesn't have any mechanism to pass back an
> error, even though it calls setup_ntlmv2_rsp and that function can
> return one.
>
> The whole house of cards needs a bit of rework I think...
>
> Shirish, since you're already doing work in this area, can you fix that
> too?
>
> Thanks,
> --
> Jeff Layton <jlayton@...ba.org>
>

Looking into it.
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