diff options
| author | Takashi Iwai <tiwai@suse.de> | 2010-01-19 15:53:43 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2010-01-19 15:53:43 +0100 |
| commit | 9e4c84967ef027fe50a03cf48dd6da9519c8e60c (patch) | |
| tree | 21d6b8168670f22521f3bb703e3b9d1932566c1c /include/linux/poison.h | |
| parent | d2f2fcd2541bae004db7f4798ffd9d2cb75ae817 (diff) | |
| parent | 3fb4a508b8e7957aa899f32cd6d9d462e102c7ca (diff) | |
Merge branch 'fix/hda' into topic/hda
Conflicts:
sound/pci/hda/patch_realtek.c
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 7fc194aef8c2..2110a81c5e2a 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 **********/ /* |