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Date: Fri, 4 Feb 2011 14:09:44 -0800
From: Kees Cook <kees.cook@canonical.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, Joe Perches <joe@perches.com>,
        Rusty Russell <rusty@rustcorp.com.au>, Tejun Heo <tj@kernel.org>,
        Marcus Meissner <meissner@suse.de>,
        Jason Wessel <jason.wessel@windriver.com>,
        Eugene Teo <eugeneteo@kernel.org>,
        Bjorn Helgaas <bjorn.helgaas@hp.com>, Len Brown <len.brown@intel.com>,
        Changli Gao <xiaosuo@gmail.com>,
        Dan Rosenberg <drosenberg@vsecurity.com>
Subject: Re: [PATCH v2] use %pK for /proc/kallsyms and /proc/modules
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 <20110204140351.f9066af0.akpm@linux-foundation.org>
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Hi Andrew,

On Fri, Feb 04, 2011 at 02:03:51PM -0800, Andrew Morton wrote:
> kernel/kallsyms.c: In function 's_show':
> kernel/kallsyms.c:481: warning: format '%p' expects type 'void *', but argument 3 has type 'long unsigned int'
> kernel/kallsyms.c:484: warning: format '%p' expects type 'void *', but argument 3 has type 'long unsigned int'
> kernel/module.c: In function 'module_sect_show':
> kernel/module.c:1171: warning: format '%p' expects type 'void *', but argument 3 has type 'long unsigned int'
> kernel/module.c:1171: warning: format '%p' expects type 'void *', but argument 3 has type 'long unsigned int'
> 
> I'm struggling to see how this could have been compile-time or runtime
> tested?

I run-time tested it plenty. The thread contains the various discussions
about compile-time warnings, so I suspect in the last version, I didn't go
examine the warnings (since the origin of the other warnings went away).

I can send a patch to fix it up to cast everything to (void*) if you want?

-Kees

-- 
Kees Cook
Ubuntu Security Team