linux-kernel - Re: [PATCH] [resend] ACPI: Fix memory leak in acpi_bind

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Date:	Tue, 16 Oct 2012 12:14:16 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Jesper Juhl <jj@...osbits.net>
cc:	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	Len Brown <lenb@...nel.org>
Subject: Re: [PATCH] [resend] ACPI: Fix memory leak in acpi_bind_one()
 (fwd)

On Mon, 15 Oct 2012, Jesper Juhl wrote:

> Memory is allocated with kzalloc() and assigned to
> 'physical_node'. Then 'physical_node->node_id' is initialized with a
> call to 'find_first_zero_bit()', if that results in a value greater
> than ACPI_MAX_PHYSICAL_NODE we'll end up jumping to the 'err:' label
> and there leave the function and let 'physical_node' go out of scope
> and leak the memory we allocated.
> This patch fixes the leak by simply freeing the unused/unneeded memory
> pointed to by 'physical_node' just before we jump to 'err:'.
> 
> Signed-off-by: Jesper Juhl <jj@...osbits.net>

Acked-by: David Rientjes <rientjes@...gle.com>
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