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| author | Aaron Durbin <adurbin@google.com> | 2007-05-16 22:11:06 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-17 05:23:04 -0700 |
| commit | f363d16fbb9374c0bd7f2757d412c287169094c9 (patch) | |
| tree | fc706493c5cca046934de190056756f7ce02422f /include/acpi | |
| parent | 0aa817f078b655d0ae36669169d73a5c8a388016 (diff) | |
| download | kernel_samsung_smdk4412-f363d16fbb9374c0bd7f2757d412c287169094c9.zip kernel_samsung_smdk4412-f363d16fbb9374c0bd7f2757d412c287169094c9.tar.gz kernel_samsung_smdk4412-f363d16fbb9374c0bd7f2757d412c287169094c9.tar.bz2 | |
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 'include/acpi')
| -rw-r--r-- | include/acpi/acpi_numa.h | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/include/acpi/acpi_numa.h b/include/acpi/acpi_numa.h index f9d2bde..b62cd36 100644 --- a/include/acpi/acpi_numa.h +++ b/include/acpi/acpi_numa.h @@ -11,11 +11,8 @@ #define MAX_PXM_DOMAINS (256) /* Old pxm spec is defined 8 bit */ #endif -extern int __cpuinitdata pxm_to_node_map[MAX_PXM_DOMAINS]; -extern int __cpuinitdata node_to_pxm_map[MAX_NUMNODES]; - -extern int __cpuinit pxm_to_node(int); -extern int __cpuinit node_to_pxm(int); +extern int pxm_to_node(int); +extern int node_to_pxm(int); extern int __cpuinit acpi_map_pxm_to_node(int); extern void __cpuinit acpi_unmap_pxm_to_node(int); |