[PATCH] uml: fix signal frame copy_user

The copy_user stuff in the signal frame code was broke.
Signed-off-by: NJeff Dike <jdike@addtoit.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

arch/um/sys-i386/signal.c

@@ -122,9 +122,9 @@ int copy_sc_from_user_tt(struct sigcontext *to, struct sigcontext *from,
 	int err;
 
 	to_fp = to->fpstate;
-	from_fp = from->fpstate;
 	sigs = to->oldmask;
 	err = copy_from_user(to, from, sizeof(*to));
+	from_fp = to->fpstate;
 	to->oldmask = sigs;
 	to->fpstate = to_fp;
 	if(to_fp != NULL)

arch/um/sys-x86_64/signal.c

@@ -109,10 +109,13 @@ int copy_sc_from_user_tt(struct sigcontext *to, struct sigcontext *from,
 	int err;
 
 	to_fp = to->fpstate;
-       from_fp = from->fpstate;
 	sigs = to->oldmask;
 	err = copy_from_user(to, from, sizeof(*to));
+	from_fp = to->fpstate;
+	to->fpstate = to_fp;
 	to->oldmask = sigs;
+	if(to_fp != NULL)
+		err |= copy_from_user(to_fp, from_fp, fpsize);
 	return(err);
 }
 
@@ -125,6 +128,10 @@ int copy_sc_to_user_tt(struct sigcontext *to, struct _fpstate *fp,
 	to_fp = (fp ? fp : (struct _fpstate *) (to + 1));
 	from_fp = from->fpstate;
 	err = copy_to_user(to, from, sizeof(*to));
+	if(from_fp != NULL){
+		err |= copy_to_user(&to->fpstate, &to_fp, sizeof(to->fpstate));
+		err |= copy_to_user(to_fp, from_fp, fpsize);
+	}
 	return(err);
 }