[SPARC64]: Check copy_to_user() return value in sys_{sparc,sunos}32.c

Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc64/kernel/sys_sparc32.c

@@ -1598,7 +1598,8 @@ asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
 			    put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp))
 				error = -EFAULT;
 		}
-		copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
+		if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
+			error = -EFAULT;
 	}
 	return error;
 #endif

arch/sparc64/kernel/sys_sunos32.c

@@ -291,7 +291,8 @@ static int sunos_filldir(void * __buf, const char * name, int namlen,
 	put_user(ino, &dirent->d_ino);
 	put_user(namlen, &dirent->d_namlen);
 	put_user(reclen, &dirent->d_reclen);
-	copy_to_user(dirent->d_name, name, namlen);
+	if (copy_to_user(dirent->d_name, name, namlen))
+		return -EFAULT;
 	put_user(0, dirent->d_name + namlen);
 	dirent = (void __user *) dirent + reclen;
 	buf->curr = dirent;
@@ -371,7 +372,8 @@ static int sunos_filldirentry(void * __buf, const char * name, int namlen,
 	put_user(ino, &dirent->d_ino);
 	put_user(namlen, &dirent->d_namlen);
 	put_user(reclen, &dirent->d_reclen);
-	copy_to_user(dirent->d_name, name, namlen);
+	if (copy_to_user(dirent->d_name, name, namlen))
+		return -EFAULT;
 	put_user(0, dirent->d_name + namlen);
 	dirent = (void __user *) dirent + reclen;
 	buf->curr = dirent;