Should I free the pointer returned by native method manually?

[tison]

Here is the code snippet:

    public static void main(String[] args) throws Throwable {
        final Linker linker = Linker.nativeLinker();
        final SymbolLookup libc = linker.defaultLookup();
        final MethodHandle handle =
linker.downcallHandle(libc.find("getpwnam").orElseThrow(),
FunctionDescriptor.of(ValueLayout.ADDRESS, ValueLayout.ADDRESS));
        try (Arena arena = Arena.ofConfined()) {
            final MemorySegment passwd = (MemorySegment)
handle.invoke(arena.allocateUtf8String("tison"));
            System.out.println("passwd=" + passwd);
            System.out.println("pw_name=" +
passwd.reinterpret(Long.MAX_VALUE).get(ValueLayout.ADDRESS,
48).reinterpret(Long.MAX_VALUE).getUtf8String(0));
        }
    }

I wonder if I should explicitly free passwd that is returned from a
native method. If so, how? If not, how the Arena tracks it and free on
closed?

Best,
tison.