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[PATCH] uml: Fix stack alignment

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Stack randomization needs to be conditional on the personality allowing it.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jeff Dike 2006-09-25 23:33:01 -07:00 • committed by Linus Torvalds
parent 91b165c059
commit 8f80e9466e
1 changed files with 2 additions and 1 deletions
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3
arch/um/kernel/process_kern.c
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@ -23,6 +23,7 @@
#include "linux/proc_fs.h" #include "linux/proc_fs.h"
#include "linux/ptrace.h" #include "linux/ptrace.h"
#include "linux/random.h" #include "linux/random.h"
#include "linux/personality.h"
#include "asm/unistd.h" #include "asm/unistd.h"
#include "asm/mman.h" #include "asm/mman.h"
#include "asm/segment.h" #include "asm/segment.h"
@ -476,7 +477,7 @@ int singlestepping(void * t)
#ifndef arch_align_stack #ifndef arch_align_stack
unsigned long arch_align_stack(unsigned long sp) 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; sp -= get_random_int() % 8192;
return sp & ~0xf; return sp & ~0xf;
} }