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,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 31D2DC433E1 for ; Mon, 17 Aug 2020 17:41:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0DED220716 for ; Mon, 17 Aug 2020 17:41:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597686110; bh=h6Fj3ETpMGOpPRh1EYAIBRsMwJkRuf4kml+PDi+3WTA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=IWPUdcM3+2I2TQLBYV4akI/Pd4Ordc/KAcZD6e2fz1XqwFslucFsG9air7vNTo+SK ao7ANgtyaDbKalgb0mkxCkMQtS3lWIyLUgosfi5ZrFWOzcQ88Hfqbq53iV540gNM9p yLsgBUNlHiIkNF+/3djbuN3nIPKYCnbhaO2t0/dQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731519AbgHQRlr (ORCPT ); Mon, 17 Aug 2020 13:41:47 -0400 Received: from mail.kernel.org ([198.145.29.99]:55714 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731078AbgHQQQj (ORCPT ); Mon, 17 Aug 2020 12:16:39 -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 5102722CAF; Mon, 17 Aug 2020 16:15:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597680956; bh=h6Fj3ETpMGOpPRh1EYAIBRsMwJkRuf4kml+PDi+3WTA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=O/QURIUEos7AxRnk4nqQQIseSB8gsgqq4B6DnhTAv22rdoCXoJm8g8gfXkP+ibPOv 5/49toUdvNv2NdWCWETX4ESwg8Ts3Q5nUJH8ExswgcQAjCs4p3qdbY0Dtjf+yz41v0 oe6fEYNI+bslap3USnnNr12Lt0iuUL2/lJ0tUR/8= 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 4.19 125/168] dlm: Fix kobject memleak Date: Mon, 17 Aug 2020 17:17:36 +0200 Message-Id: <20200817143739.928348964@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817143733.692105228@linuxfoundation.org> References: <20200817143733.692105228@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 f1261fa0af8a1..244b87e4dfe7f 100644 --- a/fs/dlm/lockspace.c +++ b/fs/dlm/lockspace.c @@ -633,6 +633,9 @@ 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); @@ -640,9 +643,6 @@ 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