---

yaml
---
r: 73425
b: refs/heads/master
c: 3c5fd9c
h: refs/heads/master
i:
  73423: d47c73f
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8fc543c8f004fc9dfe0a262dc452dfe2eca4589b
+refs/heads/master: 3c5fd9c77d609b51c0bab682c9d40cbb496ec6f1

trunk/kernel/futex_compat.c

@@ -30,6 +30,15 @@ fetch_robust_entry(compat_uptr_t *uentry, struct robust_list __user **entry,
 	return 0;
 }
 
+static void __user *futex_uaddr(struct robust_list *entry,
+				compat_long_t futex_offset)
+{
+	compat_uptr_t base = ptr_to_compat(entry);
+	void __user *uaddr = compat_ptr(base + futex_offset);
+
+	return uaddr;
+}
+
 /*
  * Walk curr->robust_list (very carefully, it's a userspace list!)
  * and mark any locks found there dead, and notify any waiters.
@@ -76,11 +85,12 @@ void compat_exit_robust_list(struct task_struct *curr)
 		 * A pending lock might already be on the list, so
 		 * dont process it twice:
 		 */
-		if (entry != pending)
-			if (handle_futex_death((void __user *)entry + futex_offset,
-						curr, pi))
-				return;
+		if (entry != pending) {
+			void __user *uaddr = futex_uaddr(entry, futex_offset);
 
+			if (handle_futex_death(uaddr, curr, pi))
+				return;
+		}
 		if (rc)
 			return;
 		uentry = next_uentry;
@@ -94,9 +104,11 @@ void compat_exit_robust_list(struct task_struct *curr)
 
 		cond_resched();
 	}
-	if (pending)
-		handle_futex_death((void __user *)pending + futex_offset,
-				   curr, pip);
+	if (pending) {
+		void __user *uaddr = futex_uaddr(pending, futex_offset);
+
+		handle_futex_death(uaddr, curr, pip);
+	}
 }
 
 asmlinkage long