linux-kernel - Re: [PATCH] vxlan: Wrong type passed to %pIS

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Message-ID: <87siehnbgt.fsf@rasmusvillemoes.dk>
Date:	Sat, 07 Feb 2015 13:38:10 +0100
From:	Rasmus Villemoes <linux@...musvillemoes.dk>
To:	Joe Perches <joe@...ches.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Pravin B Shelar <pshelar@...ira.com>,
	Nicolas Dichtel <nicolas.dichtel@...nd.com>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Dan Carpenter <dan.carpenter@...cle.com>
Subject: Re: [PATCH] vxlan: Wrong type passed to %pIS

On Sat, Feb 07 2015, Joe Perches <joe@...ches.com> wrote:

> On Sat, 2015-02-07 at 03:17 +0100, Rasmus Villemoes wrote:
>> src_ip is a pointer to a union vxlan_addr, one member of which is a
>> struct sockaddr. Passing a pointer to src_ip is wrong; one should pass
>> the value of src_ip itself. Since %pIS formally expects something of
>> type struct sockaddr*, let's pass a pointer to the appropriate union
>> member, though this of course doesn't change the generated code.
>
> Hello Rasmus
>
> Are you finding these mismatches by hand or
> are you using some tool?

I've extended smatch to do format checking (mostly for the %p
extensions; gcc already does all the other stuff just fine). I'll try
and see if I can get it on github sometime in the coming week.

Rasmus
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