From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D051EC433E1 for ; Thu, 20 Aug 2020 11:55:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AE570207BB for ; Thu, 20 Aug 2020 11:55:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597924525; bh=vHK/cYfCkH6S2lRCLbZoov92dZX5JyM42uxfEnSmiag=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=1tdMvIEwtSEau3v8ejkKUStc3dRHmIa949RTqjmYRwEv89YKm18Xe1I8C0lrTkv0i 2OYy/95lPGaqt2hXdMXMC7lY8xlCBItV1AMsA8Pbtt0zQXPV7GVBcPHg9Sfw1OGDrh XJbC8jXHQ+ypvBcUG9zZQPA7tk189ibH6d7FJkQo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729026AbgHTLzR (ORCPT ); Thu, 20 Aug 2020 07:55:17 -0400 Received: from mail.kernel.org ([198.145.29.99]:51860 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730517AbgHTKCk (ORCPT ); Thu, 20 Aug 2020 06:02:40 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8968722B43; Thu, 20 Aug 2020 10:02:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597917758; bh=vHK/cYfCkH6S2lRCLbZoov92dZX5JyM42uxfEnSmiag=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gyr+RrH/vIeMUmIr6pD851QrNot3jDOxgERucTrxV4Jw7cdk958RuB5Tg8l2uP//f oQyUK0gzeNdOHsf4awRPLCOiz+ExdEg4w2is5bCPBz/YEhwWx9v3/tDx08n/n+j/23 mX6GPJAK7NKVf2+rHLPASm5UIL7CG8Ght/syBWOg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hulk Robot , Wang Hai , David Teigland , Sasha Levin Subject: [PATCH 4.9 148/212] dlm: Fix kobject memleak Date: Thu, 20 Aug 2020 11:22:01 +0200 Message-Id: <20200820091609.889086978@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200820091602.251285210@linuxfoundation.org> References: <20200820091602.251285210@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Wang Hai [ Upstream commit 0ffddafc3a3970ef7013696e7f36b3d378bc4c16 ] Currently the error return path from kobject_init_and_add() is not followed by a call to kobject_put() - which means we are leaking the kobject. Set do_unreg = 1 before kobject_init_and_add() to ensure that kobject_put() can be called in its error patch. Fixes: 901195ed7f4b ("Kobject: change GFS2 to use kobject_init_and_add") Reported-by: Hulk Robot Signed-off-by: Wang Hai Signed-off-by: David Teigland Signed-off-by: Sasha Levin --- fs/dlm/lockspace.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c index b14bb2c460426..499f54f99891c 100644 --- a/fs/dlm/lockspace.c +++ b/fs/dlm/lockspace.c @@ -626,6 +626,9 @@ static int new_lockspace(const char *name, const char *cluster, wait_event(ls->ls_recover_lock_wait, test_bit(LSFL_RECOVER_LOCK, &ls->ls_flags)); + /* let kobject handle freeing of ls if there's an error */ + do_unreg = 1; + ls->ls_kobj.kset = dlm_kset; error = kobject_init_and_add(&ls->ls_kobj, &dlm_ktype, NULL, "%s", ls->ls_name); @@ -633,9 +636,6 @@ static int new_lockspace(const char *name, const char *cluster, goto out_recoverd; kobject_uevent(&ls->ls_kobj, KOBJ_ADD); - /* let kobject handle freeing of ls if there's an error */ - do_unreg = 1; - /* This uevent triggers dlm_controld in userspace to add us to the group of nodes that are members of this lockspace (managed by the cluster infrastructure.) Once it's done that, it tells us who the -- 2.25.1