From f363d16fbb9374c0bd7f2757d412c287169094c9 Mon Sep 17 00:00:00 2001 From: Aaron Durbin Date: Wed, 16 May 2007 22:11:06 -0700 Subject: 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 Cc: Len Brown Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/acpi/numa.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/acpi/numa.c') diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c index 8fcd6a15517..a2efae8a4c4 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; -- cgit v1.2.3-18-g5258