From patchwork Wed May 13 09:44:23 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: 225959 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=-6.9 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, 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 937EFCA90AF for ; Wed, 13 May 2020 09:59:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 65975206B8 for ; Wed, 13 May 2020 09:59:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1589363975; bh=pM95nrK/ZvH2xPCEa2KhKYz52Uj9sIGd6V9yKNOB8TM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=S+xRzENo5us9V0T5aykfs14/9EQ18Pa6jmqgku9Uv9cksHzITTWwEa4R4RqpdgDqK 6YLnNuOWy75PQXbpm3gxe11Ww9KZr7atnAsOUQEpEDsXMiU/JuIgCEdR9E9mvULJk+ BCC5rVbntDqZRDxLVv+QGaxpRLJlm2EFfmXxui98= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387910AbgEMJxL (ORCPT ); Wed, 13 May 2020 05:53:11 -0400 Received: from mail.kernel.org ([198.145.29.99]:54910 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387900AbgEMJxI (ORCPT ); Wed, 13 May 2020 05:53:08 -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 AD18C23128; Wed, 13 May 2020 09:53:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1589363587; bh=pM95nrK/ZvH2xPCEa2KhKYz52Uj9sIGd6V9yKNOB8TM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DBiS0J71Pw/0aAoodOaVXkh2xZgTxy8jdLwasDLPRvyc6hxU5EGWItcc8gmtgnDr7 cyH/PUoAZg2ZPIUl4e2225Hky50ex3Jo0gu1uoyy805a/ASkbx6LagD+3W4WZJLuq9 CH32xvVRj2M1Ss0ZjasVbtxuZ25GdiuTSajfnmj4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Michael Chan , "David S. Miller" Subject: [PATCH 5.6 044/118] bnxt_en: Return error when allocating zero size context memory. Date: Wed, 13 May 2020 11:44:23 +0200 Message-Id: <20200513094421.147790032@linuxfoundation.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200513094417.618129545@linuxfoundation.org> References: <20200513094417.618129545@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: Michael Chan [ Upstream commit bbf211b1ecb891c7e0cc7888834504183fc8b534 ] bnxt_alloc_ctx_pg_tbls() should return error when the memory size of the context memory to set up is zero. By returning success (0), the caller may proceed normally and may crash later when it tries to set up the memory. Fixes: 08fe9d181606 ("bnxt_en: Add Level 2 context memory paging support.") Signed-off-by: Michael Chan Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -6662,7 +6662,7 @@ static int bnxt_alloc_ctx_pg_tbls(struct int rc; if (!mem_size) - return 0; + return -EINVAL; ctx_pg->nr_pages = DIV_ROUND_UP(mem_size, BNXT_PAGE_SIZE); if (ctx_pg->nr_pages > MAX_CTX_TOTAL_PAGES) {