Linus,

Please pull the latest safe-poison-pointers-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git safe-poison-pointers-for-linus

this has your suggested change to 0xdead000000000000 included.

Thanks,

Ingo

------------------>
Avi Kivity (1):
core, x86: make LIST_POISON less deadly

Ingo Molnar (1):
x86: change LIST_POISON to 0xdead000000000000


arch/x86/Kconfig | 5 +++++
include/linux/poison.h | 10 ++++++++--
2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index e0edaaa..0dbd040 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1019,6 +1019,11 @@ config ARCH_MEMORY_PROBE
def_bool X86_64
depends on MEMORY_HOTPLUG

+config ILLEGAL_POINTER_VALUE
+ hex
+ default 0 if X86_32
+ default 0xdead000000000000 if X86_64
+
source "mm/Kconfig"

config HIGHPTE
diff --git a/include/linux/poison.h b/include/linux/poison.h
index 9f31683..0d105a5 100644
--- a/include/linux/poison.h
+++ b/include/linux/poison.h
@@ -1,14 +1,20 @@
#ifndef _LINUX_POISON_H
#define _LINUX_POISON_H

+#ifdef CONFIG_ILLEGAL_POINTER_VALUE
+#define POISON_POINTER_DELTA CONFIG_ILLEGAL_POINTER_VALUE
+#else
+#define POISON_POINTER_DELTA 0L
+#endif
+
/********** include/linux/list.h **********/
/*
* 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 **********/
/*
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/