linux-kernel - Re: [PATCH] staging: lustre: lustre: obdclass: lprocfs_status.c: Fix for possible null pointer dereference

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Date:	Mon, 15 Dec 2014 15:53:16 -0800
From:	Joe Perches <joe@...ches.com>
To:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
Cc:	Oleg Drokin <oleg.drokin@...el.com>,
	Andreas Dilger <andreas.dilger@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Julia Lawall <Julia.Lawall@...6.fr>,
	Greg Donald <gdonald@...il.com>,
	"John L. Hammond" <john.hammond@...el.com>,
	Andriy Skulysh <Andriy_Skulysh@...atex.com>,
	Fabian Frederick <fabf@...net.be>,
	James Simmons <uja.ornl@...il.com>, HPDD-discuss@...ts.01.org,
	devel@...verdev.osuosl.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] staging: lustre: lustre: obdclass: lprocfs_status.c:
 Fix for possible null pointer dereference

On Mon, 2014-12-15 at 23:23 +0100, Rickard Strandqvist wrote:
> Hi Joe

Hello Rickard

> No, it does not look like end can be NULL then.
> Then remove the end != NULL instead?
> ...
>     if (end != NULL && *end == '.') {

Up to you.

> However, I am hesitant to the tolower()  I think double case is faster...?

I doubt code execution speed is paramount here.
Maybe see if the object code size is smaller one
way or the other.


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