linux-kernel - Re: [V3][PATCH 2/6] x86, nmi: create new NMI handler routines

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Date:	Tue, 6 Sep 2011 12:53:12 -0400
From:	Don Zickus <dzickus@...hat.com>
To:	Robert Richter <robert.richter@....com>
Cc:	"x86@...nel.org" <x86@...nel.org>,
	Andi Kleen <andi@...stfloor.org>,
	Peter Zijlstra <peterz@...radead.org>,
	"ying.huang@...el.com" <ying.huang@...el.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"paulmck@...ux.vnet.ibm.com" <paulmck@...ux.vnet.ibm.com>
Subject: Re: [V3][PATCH 2/6] x86, nmi: create new NMI handler routines

On Tue, Sep 06, 2011 at 12:08:57PM +0200, Robert Richter wrote:
> On 25.08.11 12:45:44, Don Zickus wrote:
> > +int register_nmi_handler(unsigned int type, nmi_handler_t handler,
> > +			unsigned long nmiflags, const char *devname)
> > +{
> > +	struct nmiaction *action;
> > +	int retval;
> > +
> > +	if (!handler)
> > +		return -EINVAL;
> > +
> > +	action = kzalloc(sizeof(struct nmiaction), GFP_KERNEL);
> > +	if (!action)
> > +		return -ENOMEM;
> > +
> > +	action->handler = handler;
> > +	action->flags = nmiflags;
> > +	action->name = kstrndup(devname, NMI_MAX_NAMELEN, GFP_KERNEL);
> 
> Null pointer check is missing here.

Thanks.

Cheers,
Don
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