linux-kernel - Re: [PATCH] xfs: fix possible NULL dereference

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Message-ID: <20131022203946.GB2797@dastard>
Date:	Wed, 23 Oct 2013 07:39:46 +1100
From:	Dave Chinner <david@...morbit.com>
To:	Geyslan Gregório Bem <geyslan@...il.com>
Cc:	Eric Sandeen <sandeen@...deen.net>, Ben Myers <bpm@....com>,
	Alex Elder <elder@...nel.org>,
	open list <linux-kernel@...r.kernel.org>,
	XFS FILESYSTEM <xfs@....sgi.com>
Subject: Re: [PATCH] xfs: fix possible NULL dereference

On Tue, Oct 22, 2013 at 08:12:51AM -0200, Geyslan Gregório Bem wrote:
> 2013/10/21 Dave Chinner <david@...morbit.com>:
> > On Mon, Oct 21, 2013 at 07:00:59PM -0500, Eric Sandeen wrote:
> >> On 10/21/13 6:56 PM, Dave Chinner wrote:
> >> > On Mon, Oct 21, 2013 at 06:18:49PM -0500, Ben Myers wrote:
> >
> > Yes, but to continue the Devil's Advocate argument, the purpose of
> > debug code isn't to enlightent the casual reader or drive-by
> > patchers - it's to make life easier for people who actually spend
> > time debugging the code. And the people who need the debug code
> > are expected to understand why an ASSERT is not necessary. :)
> >
> Dave, Eric and Ben,
> 
> This was catched by coverity (CID 102348).

You should have put that in the patch description.

Now I understand why there's been a sudden surge of irrelevant one
line changes from random people that have never touched XFS before.

<sigh>

Ok, lets churn the code just to shut the stupid checker up. This
doesn't fix a bug, it doesn't change behaviour, it just makes
coverity happy. Convert it to the for loop plus ASSERT I mentioned
in a previous message.

Cheers,

Dave.
-- 
Dave Chinner
david@...morbit.com
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