From patchwork Sun Jun 20 13:28:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 464434 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 40151C49EA3 for ; Sun, 20 Jun 2021 13:28:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 172996113E for ; Sun, 20 Jun 2021 13:28:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229694AbhFTNac (ORCPT ); Sun, 20 Jun 2021 09:30:32 -0400 Received: from smtp03.smtpout.orange.fr ([80.12.242.125]:41818 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229658AbhFTNa0 (ORCPT ); Sun, 20 Jun 2021 09:30:26 -0400 Received: from localhost.localdomain ([86.243.172.93]) by mwinf5d33 with ME id KRU82500G21Fzsu03RU97r; Sun, 20 Jun 2021 15:28:13 +0200 X-ME-Helo: localhost.localdomain X-ME-Auth: Y2hyaXN0b3BoZS5qYWlsbGV0QHdhbmFkb28uZnI= X-ME-Date: Sun, 20 Jun 2021 15:28:13 +0200 X-ME-IP: 86.243.172.93 From: Christophe JAILLET To: jesse.brandeburg@intel.com, anthony.l.nguyen@intel.com, davem@davemloft.net, kuba@kernel.org, david.m.ertman@intel.com, shiraz.saleem@intel.com Cc: intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET Subject: [PATCH] ice: Fix a memory leak in an error handling path in 'ice_pf_dcb_cfg()' Date: Sun, 20 Jun 2021 15:28:06 +0200 Message-Id: <0302ff0ced7f38b0076c08ce351477d338bbe548.1624195601.git.christophe.jaillet@wanadoo.fr> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org If this 'kzalloc()' fails we must free some resources as in all the other error handling paths of this function. Fixes: 348048e724a0 ("ice: Implement iidc operations") Signed-off-by: Christophe JAILLET --- 'event' is allocated and freed just a few lines below. It looks like a small structure, so maybe a better fix would be to avoid the kzalloc/kfree and use a local variable instead. Another solution --- drivers/net/ethernet/intel/ice/ice_dcb_lib.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c index 857dc62da7a8..926cf748c5ec 100644 --- a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c +++ b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c @@ -316,8 +316,10 @@ int ice_pf_dcb_cfg(struct ice_pf *pf, struct ice_dcbx_cfg *new_cfg, bool locked) /* Notify AUX drivers about impending change to TCs */ event = kzalloc(sizeof(*event), GFP_KERNEL); - if (!event) - return -ENOMEM; + if (!event) { + ret = -ENOMEM; + goto free_cfg; + } set_bit(IIDC_EVENT_BEFORE_TC_CHANGE, event->type); ice_send_event_to_aux(pf, event);