From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1752229AbdIIRl3 (ORCPT <rfc822;w@1wt.eu>);
        Sat, 9 Sep 2017 13:41:29 -0400
Received: from mx4.wp.pl ([212.77.101.12]:57457 "EHLO mx4.wp.pl"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1751279AbdIIRl1 (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
        Sat, 9 Sep 2017 13:41:27 -0400
Date: Sat, 9 Sep 2017 19:41:21 +0200
From: Jakub Kicinski <kubakici@wp.pl>
To: LKML <linux-kernel@vger.kernel.org>
Subject: Module removal-related regression?
Message-ID: <20170909194121.39cd9f56@cakuba.netronome.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
X-WP-MailID: 4756df6c841ed9cbd12c5ed8cf8d637b
X-WP-AV: skaner antywirusowy Poczty Wirtualnej Polski
X-WP-SPAM: NO 000000A [MVNU]                               
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Hi!

I'm having trouble with modules on linux/master.  rmmod succeeds but the
module is still loaded and the refcount goes to 1:

#rmmod nfp; insmod ./src/nfp.ko nfp_pf_netdev=0 ; \
	/opt/netronome/bin/nfp-hwinfo -n 2  assembly.partno \
	lsmod | grep nfp; \
	rmmod nfp; \
	lsmod | grep nfp 
nfp                   249856  0 
nfp                   200704  1 

If I rmmod again the module will be actually unloaded.  The user space
is mostly Ubuntu 14.04.  Has anyone seen this?  I'm trying to bisect
now...