netdev - Re: [RFC PATCH v6 00/16] Labeled networking patches for 2.6.28

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Date:	Wed, 1 Oct 2008 12:24:26 -0400
From:	Paul Moore <paul.moore@...com>
To:	James Morris <jmorris@...ei.org>
Cc:	selinux@...ho.nsa.gov, linux-security-module@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [RFC PATCH v6 00/16] Labeled networking patches for 2.6.28

On Tuesday 30 September 2008 9:34:24 pm James Morris wrote:
> I found some sparse warnings -- the last couple at least may need
> attention:
>
> $ make C=2 CF="-D__cold__=" SUBDIRS=net/netlabel

Ah ha!

At this point I have to admit a dirty little secret, I've never run 
sparse on any of my code before.  It isn't for a lack of trying it is 
just that I had no idea how to do so and googling for "sparse" and all 
the relevant Linux modifiers didn't result in much.  That command line 
helped quite a bit.

For others who may be interested you can find the sparse tool here:

 * http://www.kernel.org/pub/software/devel/sparse

... and it looks like the magic incantation is "make C={1,2}".  I have 
no idea what the "CF=..." bits do, James?

>   CHECK   net/netlabel/netlabel_user.c
>   CC      net/netlabel/netlabel_user.o
>   CHECK   net/netlabel/netlabel_kapi.c
>   CC      net/netlabel/netlabel_kapi.o
>   CHECK   net/netlabel/netlabel_domainhash.c
> net/netlabel/netlabel_domainhash.c:143:3: warning: symbol
> '_________p1' shadows an earlier one
> net/netlabel/netlabel_domainhash.c:143:3: originally declared here
> net/netlabel/netlabel_domainhash.c:143:3: warning: symbol
> '_________p1' shadows an earlier one
> net/netlabel/netlabel_domainhash.c:143:3: originally declared here
> net/netlabel/netlabel_domainhash.c:635:3: warning: symbol
> '_________p1' shadows an earlier one
> net/netlabel/netlabel_domainhash.c:635:3: originally declared here
> net/netlabel/netlabel_domainhash.c:635:3: warning: symbol
> '_________p1' shadows an earlier one
> net/netlabel/netlabel_domainhash.c:635:3: originally declared here CC
>      net/netlabel/netlabel_domainhash.o
>   CHECK   net/netlabel/netlabel_addrlist.c
>   CC      net/netlabel/netlabel_addrlist.o
>   CHECK   net/netlabel/netlabel_mgmt.c
>   CC      net/netlabel/netlabel_mgmt.o
>   CHECK   net/netlabel/netlabel_unlabeled.c
> net/netlabel/netlabel_unlabeled.c:265:2: warning: symbol
> '_________p1' shadows an earlier one
> net/netlabel/netlabel_unlabeled.c:265:2: originally declared here
> net/netlabel/netlabel_unlabeled.c:265:2: warning: symbol
> '_________p1' shadows an earlier one
> net/netlabel/netlabel_unlabeled.c:265:2: originally declared here
> net/netlabel/netlabel_unlabeled.c:1282:3: warning: symbol
> '_________p1' shadows an earlier one
> net/netlabel/netlabel_unlabeled.c:1282:3: originally declared here
> net/netlabel/netlabel_unlabeled.c:1282:3: warning: symbol
> '_________p1' shadows an earlier one
> net/netlabel/netlabel_unlabeled.c:1282:3: originally declared here CC
>      net/netlabel/netlabel_unlabeled.o
>   CHECK   net/netlabel/netlabel_cipso_v4.c
> net/netlabel/netlabel_cipso_v4.c:686:21: warning: incorrect type in
> argument 1 (different signedness)
> net/netlabel/netlabel_cipso_v4.c:686:21:    expected unsigned int
> [usertype] *skip_cnt
> net/netlabel/netlabel_cipso_v4.c:686:21:    got int *<noident>
> net/netlabel/netlabel_cipso_v4.c:622:2: warning: context imbalance in
> 'netlbl_cipsov4_list' - different lock contexts for basic block CC   
>   net/netlabel/netlabel_cipso_v4.o
>   LD      net/netlabel/built-in.o
>   Building modules, stage 2.
>   MODPOST 0 modules

Thanks, I went ahead and fixed all of the problems.  I'll send an 
updated patchset later after I can do a quick sanity test.

-- 
paul moore
linux @ hp
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