linux-kernel - Re: [PATCH] crypto: x86/sha1: fix coverity CID 1195603

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Message-ID: <20140506211128.GA13218@amd.pavel.ucw.cz>
Date:	Tue, 6 May 2014 23:11:28 +0200
From:	Pavel Machek <pavel@....cz>
To:	Milos Vyletel <milos.vyletel@...il.com>
Cc:	Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"maintainer:X86 ARCHITECTURE..." <x86@...nel.org>,
	"open list:CRYPTO API" <linux-crypto@...r.kernel.org>,
	"open list:X86 ARCHITECTURE..." <linux-kernel@...r.kernel.org>,
	linux-coverity@...r.kernel.org
Subject: Re: [PATCH] crypto: x86/sha1: fix coverity CID 1195603

Hi!

> Most likely yes but I wanted to keep sha1_ssse3_mod_init consistent
> with sha256_ssse3_mod_init/sha512_ssse3_mod_init functions.


> > > Reported-by: <scan-admin@...erity.com>
> > > Signed-off-by: Milos Vyletel <milos.vyletel@...il.com>
> > > ---
> > >  arch/x86/crypto/sha1_ssse3_glue.c | 22 ++++++++++++----------
> > >  1 file changed, 12 insertions(+), 10 deletions(-)
> > >
> > > diff --git a/arch/x86/crypto/sha1_ssse3_glue.c
> > b/arch/x86/crypto/sha1_ssse3_glue.c
> > > index 74d16ef..5352196 100644
> > > --- a/arch/x86/crypto/sha1_ssse3_glue.c
> > > +++ b/arch/x86/crypto/sha1_ssse3_glue.c
> > > @@ -235,31 +235,33 @@ static bool __init avx2_usable(void)
> > >
> > >  static int __init sha1_ssse3_mod_init(void)
> > >  {
> > > -     char *algo_name;
> > > -
> >
> > Would simple "algo_name = NULL" be enough to fix this?

Dunno. I'd say that single-line change that is obviously right is
preferable to rewrite inspired by some other function.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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