[PATCH] copy_process return value fix

Rather than assuming that all the things which copy_process() calls want to
return -ENOMEM, correctly propagate the return values.

This turns out to be a no-op at present.

kernel/fork.c

@@ -380,7 +380,6 @@ static struct mm_struct * mm_init(struct mm_struct * mm)
 	return NULL;
 }
 
-
 /*
  * Allocate and initialize an mm_struct.
  */
@@ -562,7 +561,7 @@ static inline int copy_fs(unsigned long clone_flags, struct task_struct * tsk)
 	}
 	tsk->fs = __copy_fs_struct(current->fs);
 	if (!tsk->fs)
-		return -1;
+		return -ENOMEM;
 	return 0;
 }
 
@@ -697,7 +696,7 @@ static inline int copy_sighand(unsigned long clone_flags, struct task_struct * t
 	sig = kmem_cache_alloc(sighand_cachep, GFP_KERNEL);
 	tsk->sighand = sig;
 	if (!sig)
-		return -1;
+		return -ENOMEM;
 	spin_lock_init(&sig->siglock);
 	atomic_set(&sig->count, 1);
 	memcpy(sig->action, current->sighand->action, sizeof(sig->action));
@@ -715,7 +714,7 @@ static inline int copy_signal(unsigned long clone_flags, struct task_struct * ts
 	sig = kmem_cache_alloc(signal_cachep, GFP_KERNEL);
 	tsk->signal = sig;
 	if (!sig)
-		return -1;
+		return -ENOMEM;
 	atomic_set(&sig->count, 1);
 	sig->group_exit = 0;
 	sig->group_exit_code = 0;
@@ -860,23 +859,22 @@ static struct task_struct *copy_process(unsigned long clone_flags,
 	p->security = NULL;
 
 	retval = -ENOMEM;
-	if (security_task_alloc(p))
+	if ((retval = security_task_alloc(p)))
 		goto bad_fork_cleanup;
 	/* copy all the process information */
-	if (copy_semundo(clone_flags, p))
+	if ((retval = copy_semundo(clone_flags, p)))
 		goto bad_fork_cleanup_security;
-	if (copy_files(clone_flags, p))
+	if ((retval = copy_files(clone_flags, p)))
 		goto bad_fork_cleanup_semundo;
-	if (copy_fs(clone_flags, p))
+	if ((retval = copy_fs(clone_flags, p)))
 		goto bad_fork_cleanup_files;
-	if (copy_sighand(clone_flags, p))
+	if ((retval = copy_sighand(clone_flags, p)))
 		goto bad_fork_cleanup_fs;
-	if (copy_signal(clone_flags, p))
+	if ((retval = copy_signal(clone_flags, p)))
 		goto bad_fork_cleanup_sighand;
-	if (copy_mm(clone_flags, p))
+	if ((retval = copy_mm(clone_flags, p)))
 		goto bad_fork_cleanup_signal;
-	retval = copy_namespace(clone_flags, p);
-	if (retval)
+	if ((retval = copy_namespace(clone_flags, p)))
 		goto bad_fork_cleanup_mm;
 	retval = copy_thread(0, clone_flags, stack_start, stack_size, p, regs);
 	if (retval)