From patchwork Fri Jul 24 15:31:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tom Parkin X-Patchwork-Id: 1335802 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=katalix.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=katalix.com header.i=@katalix.com header.a=rsa-sha256 header.s=mail header.b=LPA/dXGI; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4BCtVP3w1Xz9sR4 for ; Sat, 25 Jul 2020 01:32:13 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726854AbgGXPcJ (ORCPT ); Fri, 24 Jul 2020 11:32:09 -0400 Received: from mail.katalix.com ([3.9.82.81]:56778 "EHLO mail.katalix.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726636AbgGXPcI (ORCPT ); Fri, 24 Jul 2020 11:32:08 -0400 Received: from localhost.localdomain (82-69-49-219.dsl.in-addr.zen.co.uk [82.69.49.219]) (Authenticated sender: tom) by mail.katalix.com (Postfix) with ESMTPSA id D05B78ADAF; Fri, 24 Jul 2020 16:32:05 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=katalix.com; s=mail; t=1595604726; bh=UgSb0iFXmTqnJKlU4S8N/MUH/Vhb8QabiqMjW0CzHEo=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References:From; z=From:=20Tom=20Parkin=20|To:=20netdev@vger.ke rnel.org|Cc:=20jchapman@katalix.com,=0D=0A=09Tom=20Parkin=20|Subject:=20[PATCH=208/9]=20l2tp:=20remove=20BUG_ON =20refcount=20value=20in=20l2tp_session_free|Date:=20Fri,=2024=20J ul=202020=2016:31:56=20+0100|Message-Id:=20<20200724153157.9366-9- tparkin@katalix.com>|In-Reply-To:=20<20200724153157.9366-1-tparkin @katalix.com>|References:=20<20200724153157.9366-1-tparkin@katalix .com>; b=LPA/dXGIJJAlLbxC9Lv/LgnRuTDzQ5oCxrIFeC/7SId7YpwqzoVyyHsKLSv+NFDpH ASU/5Oa4mrYB6U1QngrmUy6SEq6fRo/DWq2qa0Auq6Jt16RNrkUA8mg1fdm2pkSRVR MKSpt1RfLMofg9khH9Ob3L5Wevc7rFB72VMl31OLuLMNviqx/CoPRHSegdwhTlmaPB 9OgDSdsQT9wgGdZ7W0ofcYM7ykEL5hSMmvujc1HiaDdlBAdWy3jqbOagPzQvkqq0T4 GqZhsqb7SB5jzXjd+2eDWglPnkjWg1plfeC9ylASeKAU61QaQ6qnz2jztS49Ku4DJU QqRBFpq7Lc8tw== From: Tom Parkin To: netdev@vger.kernel.org Cc: jchapman@katalix.com, Tom Parkin Subject: [PATCH 8/9] l2tp: remove BUG_ON refcount value in l2tp_session_free Date: Fri, 24 Jul 2020 16:31:56 +0100 Message-Id: <20200724153157.9366-9-tparkin@katalix.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200724153157.9366-1-tparkin@katalix.com> References: <20200724153157.9366-1-tparkin@katalix.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org l2tp_session_free is only called by l2tp_session_dec_refcount when the reference count reaches zero, so it's of limited value to validate the reference count value in l2tp_session_free itself. Signed-off-by: Tom Parkin --- net/l2tp/l2tp_core.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index e228480fa529..50548c61b91e 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -1563,8 +1563,6 @@ void l2tp_session_free(struct l2tp_session *session) { struct l2tp_tunnel *tunnel = session->tunnel; - BUG_ON(refcount_read(&session->ref_count) != 0); - if (tunnel) { BUG_ON(tunnel->magic != L2TP_TUNNEL_MAGIC); l2tp_tunnel_dec_refcount(tunnel);