| Message ID | 20190404062622.26009-1-alex@ghiti.fr (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Headers | show |
| Series | parisc: Consider stack randomization for mmap base only when necessary | expand |
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); }
Do not offset mmap base address because of stack randomization if current task does not want randomization. Signed-off-by: Alexandre Ghiti <alex@ghiti.fr> --- arch/parisc/kernel/sys_parisc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)