linux-kernel - Re: [RFC] perf: Prevent potential null dereference

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Message-ID: <20101206144954.GA25943@ghostprotocols.net>
Date:	Mon, 6 Dec 2010 12:49:55 -0200
From:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To:	Cyrill Gorcunov <gorcunov@...il.com>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [RFC] perf: Prevent potential null dereference

Em Mon, Dec 06, 2010 at 01:13:21AM +0300, Cyrill Gorcunov escreveu:
> On Thu, Dec 02, 2010 at 08:46:10PM -0200, Arnaldo Carvalho de Melo wrote:
> > Em Thu, Dec 02, 2010 at 11:41:08PM +0100, Frederic Weisbecker escreveu:
> > > On Fri, Dec 03, 2010 at 01:26:05AM +0300, Cyrill Gorcunov wrote:
> > > > In case if there is no memory we might hit null
> > > > dereference on accessing calloc'ed data.
> > > > 
> > > > Signed-off-by: Cyrill Gorcunov <gorcunov@...nvz.org>
> > > > CC: Arnaldo Carvalho de Melo <acme@...hat.com>
> > > > CC: Peter Zijlstra <peterz@...radead.org>
> > > > CC: Ingo Molnar <mingo@...e.hu>
> > > > CC: Frederic Weisbecker <fweisbec@...il.com>
> > > > ---
> ...
> > > 
> > > Good.
> > > 
> > > As a nit, not that it matters that much because we are very close to the starting code
> > > anyway, but it would be better to propagate the error to the callers.
> > 
> > I'm of the opinion that main() should be where exit() is allowed, and
> > even there... return would be better. 8-)
> > 
> > - Arnaldo
> > 
> 
> ok, sorry for delay, it seems the following would be liked
> more than first version ;)
> 

Hey, what tree is this agains? I guess tip/master, right? If so, I still
didn't got there :-\

- Arnaldo
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