From patchwork Mon Jun 1 17:55:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 225025 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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, 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 6FE58C433E2 for ; Mon, 1 Jun 2020 18:18:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 432DE207BB for ; Mon, 1 Jun 2020 18:18:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591035520; bh=VJCgLwsSNHwLmsfHycjLYWKHAkmJNu9lyn4RGGguDvQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=RfUHs18xUDcaAXPvRD0IudxQmdzi/13ym7CyxzL3fZA6Qd8S2kyqfCg3DMVw5SY21 nUru1qXRczNoHW0XQNQ8hYErcGQPB70Yav9OTBuWeShLZEFV/bQLigI7lgcqWi4B2w Jtu19ZY/rSYt9UPuNvqWzx7vYDwqDSTS/eKTaBUc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731687AbgFASSg (ORCPT ); Mon, 1 Jun 2020 14:18:36 -0400 Received: from mail.kernel.org ([198.145.29.99]:39548 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731630AbgFASSD (ORCPT ); Mon, 1 Jun 2020 14:18:03 -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 3021F2068D; Mon, 1 Jun 2020 18:18:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591035482; bh=VJCgLwsSNHwLmsfHycjLYWKHAkmJNu9lyn4RGGguDvQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=P0YNWeSvgh/Kyuco2eEFbSaey6hR1EKYBecmhRjrmRCWgfnwFcPVt10NX3wOH+j+t M5v5ki/iIRvMaaeksT2DW9A2Dts3EpT7pkt88MU6GCXAinaXvWkcLqakqvXWjffG3n dCtwY7+CQZT7ieAE8xGr1/e+Vv+5rLCaw/s5FI+0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Qiushi Wu , Jay Vosburgh , "David S. Miller" Subject: [PATCH 5.6 172/177] bonding: Fix reference count leak in bond_sysfs_slave_add. Date: Mon, 1 Jun 2020 19:55:10 +0200 Message-Id: <20200601174102.402758611@linuxfoundation.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200601174048.468952319@linuxfoundation.org> References: <20200601174048.468952319@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Qiushi Wu commit a068aab42258e25094bc2c159948d263ed7d7a77 upstream. kobject_init_and_add() takes reference even when it fails. If this function returns an error, kobject_put() must be called to properly clean up the memory associated with the object. Previous commit "b8eb718348b8" fixed a similar problem. Fixes: 07699f9a7c8d ("bonding: add sysfs /slave dir for bond slave devices.") Signed-off-by: Qiushi Wu Acked-by: Jay Vosburgh Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/bonding/bond_sysfs_slave.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/net/bonding/bond_sysfs_slave.c +++ b/drivers/net/bonding/bond_sysfs_slave.c @@ -149,8 +149,10 @@ int bond_sysfs_slave_add(struct slave *s err = kobject_init_and_add(&slave->kobj, &slave_ktype, &(slave->dev->dev.kobj), "bonding_slave"); - if (err) + if (err) { + kobject_put(&slave->kobj); return err; + } for (a = slave_attrs; *a; ++a) { err = sysfs_create_file(&slave->kobj, &((*a)->attr));