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

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Message-ID: <20141216092613.GF4856@mwanda>
Date:	Tue, 16 Dec 2014 12:26:13 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
Cc:	devel@...verdev.osuosl.org,
	Andreas Dilger <andreas.dilger@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Brilliantov Kirill Vladimirovich <brilliantov@...ox.ru>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Oleg Drokin <oleg.drokin@...el.com>,
	Greg Donald <gdonald@...il.com>, HPDD-discuss@...1.01.org
Subject: Re: [PATCH] staging: lustre: lustre: osc: lproc_osc.c: Fix for
 possible null pointer dereference

On Tue, Dec 16, 2014 at 12:07:19AM +0100, Rickard Strandqvist wrote:
> Hi Dan
> 
> Quite right! Had to try it.
> 
> Do nothing then?
> But you must agree that it is still ugly and confusing code.
> 

Yes.  I agree that it's confusing.  I also suspect that "obd" is never
NULL but I haven't actually looked and these things are sometimes
complicated to verify.

I fine with merging the patch as a cleanup.

Smatch has code to not warn about these but it's not 100% correct so
it still warns sometimes when it shouldn't.

regards,
dan carpenter

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