linux-kernel - Re: [V2][PATCH 2/6] x86, nmi: create new NMI handler routines

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Date:	Wed, 24 Aug 2011 13:46:09 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Don Zickus <dzickus@...hat.com>
Cc:	x86@...nel.org, Andi Kleen <andi@...stfloor.org>,
	Robert Richter <robert.richter@....com>, ying.huang@...el.com,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [V2][PATCH 2/6] x86, nmi: create new NMI handler routines

On Tue, 2011-08-23 at 17:11 -0400, 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);
> +
> +       retval = __setup_nmi(type, action);
> +
> +       if (retval)
> +               kfree(action);

you just leaked your kstrndup().

> +       
> +       return retval;
> +} 
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