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acpi: check for pxm_to_node_map overflow

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It is hardly (if ever) possible but in case of broken _PXM entry we could
reach out of pxm_to_node_map array bounds in acpi_map_pxm_to_node() call.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Cyrill Gorcunov 2009-03-04 11:55:29 -08:00 committed by Len Brown
parent 176f9c1804
commit 27ce341983
1 changed files with 1 additions and 1 deletions
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2
drivers/acpi/numa.c
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@ -277,7 +277,7 @@ int acpi_get_node(acpi_handle *handle)
int pxm, node = -1;
pxm = acpi_get_pxm(handle);
if (pxm >= 0)
if (pxm >= 0 && pxm < MAX_PXM_DOMAINS)
node = acpi_map_pxm_to_node(pxm);
return node;