The patch titled
x86: don't randomize stack unless current->personality permits it
has been added to the -mm tree. Its filename is
x86-dont-randomize-stack-unless-current-personality-permits-it.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: x86: don't randomize stack unless current->personality permits it
From: Frank van Maarseveen <frankvm@xxxxxxxxxxx>
Do not randomize stack location unless current->personality permits it.
Signed-off-by: Frank van Maarseveen <frankvm@xxxxxxxxxxx>
Acked-by: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/i386/kernel/process.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN arch/i386/kernel/process.c~x86-dont-randomize-stack-unless-current-personality-permits-it arch/i386/kernel/process.c
--- a/arch/i386/kernel/process.c~x86-dont-randomize-stack-unless-current-personality-permits-it
+++ a/arch/i386/kernel/process.c
@@ -37,6 +37,7 @@
#include <linux/kallsyms.h>
#include <linux/ptrace.h>
#include <linux/random.h>
+#include <linux/personality.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@@ -919,7 +920,7 @@ asmlinkage int sys_get_thread_area(struc
unsigned long arch_align_stack(unsigned long sp)
{
- if (randomize_va_space)
+ if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
sp -= get_random_int() % 8192;
return sp & ~0xf;
}
_
Patches currently in -mm which might be from frankvm@xxxxxxxxxxx are
x86-dont-randomize-stack-unless-current-personality-permits-it.patch
-
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