[PATCH] parisc: Consider stack randomization for mmap base only when necessary

[Alexandre Ghiti]

Do not offset mmap base address because of stack randomization if
current task does not want randomization.

Signed-off-by: Alexandre Ghiti <a...@ghiti.fr>
---
 arch/parisc/kernel/sys_parisc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c
index 376ea0d1b275..4407ac4c1d84 100644
--- a/arch/parisc/kernel/sys_parisc.c
+++ b/arch/parisc/kernel/sys_parisc.c
@@ -86,7 +86,8 @@ static unsigned long mmap_upper_limit(struct rlimit 
*rlim_stack)
                stack_base = STACK_SIZE_MAX;
 
        /* Add space for stack randomization. */
-       stack_base += (STACK_RND_MASK << PAGE_SHIFT);
+       if (current->flags & PF_RANDOMIZE)
+               stack_base += (STACK_RND_MASK << PAGE_SHIFT);
 
        return PAGE_ALIGN(STACK_TOP - stack_base);
 }
-- 
2.20.1