linux-kernel - Re: [PATCH 04/16] per-cpu run guest

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Message-Id: <200712261038.46376.rusty@rustcorp.com.au>
Date:	Wed, 26 Dec 2007 10:38:45 +1100
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Glauber de Oliveira Costa <gcosta@...hat.com>
Cc:	lguest@...abs.org, glommer@...il.com, linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org, rostedt@...dmis.org
Subject: Re: [PATCH 04/16] per-cpu run guest

On Friday 21 December 2007 00:33:44 Glauber de Oliveira Costa wrote:
> @@ -55,11 +55,15 @@ static int user_send_irq(struct lguest *lg, const
> unsigned long __user *input) static ssize_t read(struct file *file, char
> __user *user, size_t size,loff_t*o) {
>  	struct lguest *lg = file->private_data;
> +	struct lguest_vcpu *vcpu = NULL;
> +	unsigned int vcpu_id = *o;
>
>  	/* You must write LHREQ_INITIALIZE first! */
>  	if (!lg)
>  		return -EINVAL;
>
> +	vcpu = &lg->vcpus[vcpu_id];
> +

Better do a bounds check here!

Cheers,
Rusty.
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