From patchwork Tue Feb 18 19:54:54 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: 231117 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 630A7C34026 for ; Tue, 18 Feb 2020 20:05:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3382424125 for ; Tue, 18 Feb 2020 20:05:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582056325; bh=yYZKeSyGawqNcMCw4ypNqgx7uLhMIDMRc5yLeMvZ3TI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=DmUzZAZRli33As0p79jS3215nNHfGTAmbjcgcjKu7CLSFBT4FW/ySCQjH4JXq29k7 8EUn4+f7BbT9goe/qVmLZXmHTMzBJ/TJVuXGVdxGsWMDpH+F1FpDtHU6UjjxaYtCL/ mNdkt8/1ge3U4hFm2G3qZuLYrAaupexAQA2TOi64= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728673AbgBRUB4 (ORCPT ); Tue, 18 Feb 2020 15:01:56 -0500 Received: from mail.kernel.org ([198.145.29.99]:41740 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728187AbgBRUBz (ORCPT ); Tue, 18 Feb 2020 15:01:55 -0500 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 9FA892465D; Tue, 18 Feb 2020 20:01:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582056115; bh=yYZKeSyGawqNcMCw4ypNqgx7uLhMIDMRc5yLeMvZ3TI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=u35cqI8unj6C7QfO03IrSR+MWRBIlxapaQ4LnhGLzrbUJC9NlN6XAmb7AVclMCkIy 9JypNUST0plnBi0Lg8+Z6Uqoxnw6iSOAfRASZiMqfnaj7qu229GtaoNUvSP1VG261a i3FKFRUaM7O49DIgVdAefcVjuXI1vDjMfsyBtVzo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Robert Richter , Borislav Petkov , John Garry Subject: [PATCH 5.5 33/80] EDAC/sysfs: Remove csrow objects on errors Date: Tue, 18 Feb 2020 20:54:54 +0100 Message-Id: <20200218190435.636693665@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200218190432.043414522@linuxfoundation.org> References: <20200218190432.043414522@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: Robert Richter commit 4d59588c09f2a2daedad2a544d4d1b602ab3a8af upstream. All created csrow objects must be removed in the error path of edac_create_csrow_objects(). The objects have been added as devices. They need to be removed by doing a device_del() *and* put_device() call to also free their memory. The missing put_device() leaves a memory leak. Use device_unregister() instead of device_del() which properly unregisters the device doing both. Fixes: 7adc05d2dc3a ("EDAC/sysfs: Drop device references properly") Signed-off-by: Robert Richter Signed-off-by: Borislav Petkov Tested-by: John Garry Cc: Link: https://lkml.kernel.org/r/20200212120340.4764-4-rrichter@marvell.com Signed-off-by: Greg Kroah-Hartman --- drivers/edac/edac_mc_sysfs.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/drivers/edac/edac_mc_sysfs.c +++ b/drivers/edac/edac_mc_sysfs.c @@ -447,8 +447,7 @@ error: csrow = mci->csrows[i]; if (!nr_pages_per_csrow(csrow)) continue; - - device_del(&mci->csrows[i]->dev); + device_unregister(&mci->csrows[i]->dev); } return err;