Commit b8a0255d authored by Vasily Kulikov's avatar Vasily Kulikov Committed by Linus Torvalds

include/linux/poison.h: use POISON_POINTER_DELTA for poison pointers

TIMER_ENTRY_STATIC and TAIL_MAPPING are defined as poison pointers which
should point to nowhere.  Redefine them using POISON_POINTER_DELTA
arithmetics to make sure they really point to non-mappable area declared
by the target architecture.
Signed-off-by: default avatarVasily Kulikov <segoon@openwall.com>
Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: Solar Designer <solar@openwall.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 6611d8d7
...@@ -27,14 +27,14 @@ ...@@ -27,14 +27,14 @@
* Magic number "tsta" to indicate a static timer initializer * Magic number "tsta" to indicate a static timer initializer
* for the object debugging code. * for the object debugging code.
*/ */
#define TIMER_ENTRY_STATIC ((void *) 0x74737461) #define TIMER_ENTRY_STATIC ((void *) 0x300 + POISON_POINTER_DELTA)
/********** mm/debug-pagealloc.c **********/ /********** mm/debug-pagealloc.c **********/
#define PAGE_POISON 0xaa #define PAGE_POISON 0xaa
/********** mm/page_alloc.c ************/ /********** mm/page_alloc.c ************/
#define TAIL_MAPPING ((void *) 0x01014A11 + POISON_POINTER_DELTA) #define TAIL_MAPPING ((void *) 0x400 + POISON_POINTER_DELTA)
/********** mm/slab.c **********/ /********** mm/slab.c **********/
/* /*
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment