From: Jesper Juhl <jj@chaosbits.net>
Date: Mon, 22 Oct 2012 22:53:58 +0000 (+0200)
Subject: ACPI: Fix memory leak in acpi_bind_one()
X-Git-Tag: v3.7-rc3~9^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2978af545b9a1ed221e23fb24ae4559bec6ad70d;p=pandora-kernel.git

ACPI: Fix memory leak in acpi_bind_one()

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:'.

[rjw: The problem has been introduced by commit 1033f90 (ACPI: Allow
 ACPI binding with USB-3.0 hub), which is new in 3.7-rc.]

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Reviewed-by: Toshi Kani <toshi.kani@hp.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

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