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| author | Ingo Molnar <mingo@elte.hu> | 2010-02-08 08:55:43 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-02-08 08:55:46 +0100 |
| commit | 6d3e0907b8b239d16720d144e2675ecf10d3bc3b (patch) | |
| tree | e0b0743b5f6f82b057cafc4f3687396a6e01a0b4 /include/linux/poison.h | |
| parent | 23577256953c870de9b724c3a2611ce7be6a1e4e (diff) | |
| parent | 50200df462023b187d80a99a52f5f2cfe3c86c26 (diff) | |
| download | kernel_samsung_aries-6d3e0907b8b239d16720d144e2675ecf10d3bc3b.zip kernel_samsung_aries-6d3e0907b8b239d16720d144e2675ecf10d3bc3b.tar.gz kernel_samsung_aries-6d3e0907b8b239d16720d144e2675ecf10d3bc3b.tar.bz2 | |
Merge branch 'sched/urgent' into sched/core
Merge reason: Merge dependent fix, update to latest -rc.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/poison.h')
| -rw-r--r-- | include/linux/poison.h | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/include/linux/poison.h b/include/linux/poison.h index 7fc194a..2110a81 100644 --- a/include/linux/poison.h +++ b/include/linux/poison.h @@ -2,13 +2,25 @@ #define _LINUX_POISON_H /********** include/linux/list.h **********/ + +/* + * Architectures might want to move the poison pointer offset + * into some well-recognized area such as 0xdead000000000000, + * that is also not mappable by user-space exploits: + */ +#ifdef CONFIG_ILLEGAL_POINTER_VALUE +# define POISON_POINTER_DELTA _AC(CONFIG_ILLEGAL_POINTER_VALUE, UL) +#else +# define POISON_POINTER_DELTA 0 +#endif + /* * These are non-NULL pointers that will result in page faults * under normal circumstances, used to verify that nobody uses * non-initialized list entries. */ -#define LIST_POISON1 ((void *) 0x00100100) -#define LIST_POISON2 ((void *) 0x00200200) +#define LIST_POISON1 ((void *) 0x00100100 + POISON_POINTER_DELTA) +#define LIST_POISON2 ((void *) 0x00200200 + POISON_POINTER_DELTA) /********** include/linux/timer.h **********/ /* |