diff options
| author | Takashi Iwai <tiwai@suse.de> | 2010-02-17 14:24:46 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2010-02-17 14:24:46 +0100 |
| commit | 7fb3a069bc5d3577409c2ae89f89cd264ff85816 (patch) | |
| tree | 7fe3ba3b95faeecb01e4feafb9288ef4b523c6b3 /include/linux/poison.h | |
| parent | 291186e049d7f8178ad31d43c38a53889f25d79e (diff) | |
| parent | 9d3415a8cc76ff65c6602a121ac318432c5cd7ba (diff) | |
Merge branch 'fix/misc' into topic/misc
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 7fc194aef8c..2110a81c5e2 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 **********/ /* |