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authorAaron Durbin <adurbin@google.com>2007-05-16 22:11:06 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-17 05:23:04 -0700
commitf363d16fbb9374c0bd7f2757d412c287169094c9 (patch)
treefc706493c5cca046934de190056756f7ce02422f /drivers/acpi/numa.c
parent0aa817f078b655d0ae36669169d73a5c8a388016 (diff)
downloadleg-kernel-f363d16fbb9374c0bd7f2757d412c287169094c9.tar.gz
acpi: fix potential call to a freed memory section.
Strip __cpuinit[data] from Node <-> PXM routines and supporting data structures. Also make pxm_to_node_map and node_to_pxm_map local to the numa acpi module. This fixes a bug triggered by the following conditions: - boot on a machine with a SLIT table defined - kernel is configured w/ CONFIG_HOTPLUG_CPU=n - cat /sys/devices/system/node/node*/distance This will cause an oops by calling into a freed memory section. In particular, on x86_64, __node_distance calls node_to_pxm(). Signed-off-by: Aaron Durbin <adurbin@google.com> Cc: Len Brown <lenb@kernel.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/acpi/numa.c')
-rw-r--r--drivers/acpi/numa.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index 8fcd6a15517f..a2efae8a4c4e 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -40,19 +40,19 @@ static nodemask_t nodes_found_map = NODE_MASK_NONE;
#define NID_INVAL -1
/* maps to convert between proximity domain and logical node ID */
-int __cpuinitdata pxm_to_node_map[MAX_PXM_DOMAINS]
+static int pxm_to_node_map[MAX_PXM_DOMAINS]
= { [0 ... MAX_PXM_DOMAINS - 1] = NID_INVAL };
-int __cpuinitdata node_to_pxm_map[MAX_NUMNODES]
+static int node_to_pxm_map[MAX_NUMNODES]
= { [0 ... MAX_NUMNODES - 1] = PXM_INVAL };
-int __cpuinit pxm_to_node(int pxm)
+int pxm_to_node(int pxm)
{
if (pxm < 0)
return NID_INVAL;
return pxm_to_node_map[pxm];
}
-int __cpuinit node_to_pxm(int node)
+int node_to_pxm(int node)
{
if (node < 0)
return PXM_INVAL;