1 files changed, 3 insertions, 2 deletions

diff --git a/arch/um/sys-x86_64/signal.c b/arch/um/sys-x86_64/signal.c
index 9edf114faf79..af2f017617b4 100644
--- a/arch/um/sys-x86_64/signal.c
+++ b/arch/um/sys-x86_64/signal.c
@@ -191,8 +191,9 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
         struct task_struct *me = current;
 
         frame = (struct rt_sigframe __user *)
-                round_down(stack_top - sizeof(struct rt_sigframe), 16) - 8;
-        frame = (struct rt_sigframe __user *) ((unsigned long) frame - 128);
+                round_down(stack_top - sizeof(struct rt_sigframe), 16);
+        /* Subtract 128 for a red zone and 8 for proper alignment */
+        frame = (struct rt_sigframe __user *) ((unsigned long) frame - 128 - 8);
 
         if (!access_ok(VERIFY_WRITE, fp, sizeof(struct _fpstate)))
                 goto out;