linux-kernel - Re: [PATCH] drivers: Conversions from kmalloc+memset to k(z|c)alloc.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 20 Jul 2006 19:25:16 +0200
From:	Panagiotis Issaris <takis@....org>
To:	"Daniel K." <daniel@...ded.net>
Cc:	Panagiotis Issaris <takis@...umba.uhasselt.be>,
	linux-kernel@...r.kernel.org, len.brown@...el.com,
	chas@....nrl.navy.mil, miquel@...uba.ar, kkeil@...e.de,
	benh@...nel.crashing.org, video4linux-list@...hat.com,
	rmk+mmc@....linux.org.uk, Neela.Kolli@...enio.com,
	jgarzik@...ox.com, vandrove@...cvut.cz, adaplas@....net,
	thomas@...ischhofer.net, weissg@...nna.at, philb@....org,
	linux-pcmcia@...ts.infradead.org, jkmaline@...hut.fi,
	paulus@...ba.org
Subject: Re: [PATCH] drivers: Conversions from kmalloc+memset to
	k(z|c)alloc.

Hi,

On wo, 2006-07-19 at 02:40 +0000, Daniel K. wrote:
> > [...] 
> > diff --git a/drivers/char/rio/riocmd.c b/drivers/char/rio/riocmd.c
> > index 4df6ab2..593940f 100644
> > --- a/drivers/char/rio/riocmd.c
> > +++ b/drivers/char/rio/riocmd.c
> > @@ -556,9 +556,7 @@ struct CmdBlk *RIOGetCmdBlk(void)
> >  {
> >  	struct CmdBlk *CmdBlkP;
> >  
> > -	CmdBlkP = (struct CmdBlk *)kmalloc(sizeof(struct CmdBlk), GFP_ATOMIC);
> > -	if (CmdBlkP)
> > -		memset(CmdBlkP, 0, sizeof(struct CmdBlk));
> > +	CmdBlkP = kzalloc(sizeof(struct CmdBlk), GFP_ATOMIC);
> >  	return CmdBlkP;
> >  }
> >  
> 
> Why not return kzalloc(...) here? Alternatively, return (type *) kzalloc(...),
> if you believe in explicit type casting of void pointers.
I figured someone might want to add extra code in f.e. RIOGetCmddBlk to
be able to debug/modify memory allocation behavior for the RIO driver
only. It does look a bit messy though. So I've updated it in my updated
patch.

Cheers,
Takis

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/