[PATCH] disable unshare(CLONE_VM) for now

[linux-2.6-omap-h63xx.git] / kernel / fork.c

diff --git a/kernel/fork.c b/kernel/fork.c
index ccdfbb16c86d541f035ebb844c372c23eef053d9..b373322ca4977a632bed40a38de125e9db482228 100644 (file)
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1478,9 +1478,7 @@ static int unshare_vm(unsigned long unshare_flags, struct mm_struct **new_mmp)
 
        if ((unshare_flags & CLONE_VM) &&
            (mm && atomic_read(&mm->mm_users) > 1)) {
-               *new_mmp = dup_mm(current);
-               if (!*new_mmp)
-                       return -ENOMEM;
+               return -EINVAL;
        }
 
        return 0;
@@ -1569,7 +1567,7 @@ asmlinkage long sys_unshare(unsigned long unshare_flags)
 
                if (new_sigh) {
                        sigh = current->sighand;
-                       current->sighand = new_sigh;
+                       rcu_assign_pointer(current->sighand, new_sigh);
                        new_sigh = sigh;
                }