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Date: Wed, 25 Nov 2009 14:22:43 +1100
From: Paul Mackerras <paulus@samba.org>
To: Nathan Fontenot <nfont@austin.ibm.com>
Subject: Re: [PATCH 3/3] CPU DLPAR  handling
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Nathan Fontenot writes:

> Register the pseries specific handlers for the powerpc architecture handlers
> for the cpu probe and release files.  This also implements the cpu DLPAR
> addition and removal of CPUS from the system.

...

> +	/* configure-connector reports cpus as living in the base
> +	 * directory of the device tree.  CPUs actually live in the
> +	 * cpus directory so we need to fixup the full_name.
> +	 */
> +	cpu_name = kzalloc(strlen(dn->full_name) + strlen("/cpus/") + 1,
> +			   GFP_KERNEL);
> +	if (!cpu_name) {
> +		dlpar_free_cc_nodes(dn);
> +		return -ENOMEM;
> +	}
> +
> +	sprintf(cpu_name, "/cpus/%s", dn->full_name);

I would have expected dn->full_name to start with a '/' already, in
which case this will end up with two consecutive slashes after
'cpus'.  I think that will probably cause problems.

Paul.