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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=no 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 6FB2CC433E0 for ; Tue, 7 Jul 2020 20:03:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 584CE206F6 for ; Tue, 7 Jul 2020 20:03:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728493AbgGGUDk (ORCPT ); Tue, 7 Jul 2020 16:03:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48090 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727995AbgGGUDk (ORCPT ); Tue, 7 Jul 2020 16:03:40 -0400 Received: from shards.monkeyblade.net (shards.monkeyblade.net [IPv6:2620:137:e000::1:9]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EB6BDC061755; Tue, 7 Jul 2020 13:03:39 -0700 (PDT) Received: from localhost (unknown [IPv6:2601:601:9f00:477::3d5]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id 6F237120F93E2; Tue, 7 Jul 2020 13:03:39 -0700 (PDT) Date: Tue, 07 Jul 2020 13:03:38 -0700 (PDT) Message-Id: <20200707.130338.363103542607640933.davem@davemloft.net> To: mcroce@linux.microsoft.com Cc: netdev@vger.kernel.org, sven.auhagen@voleatech.de, linux-kernel@vger.kernel.org, colin.king@canonical.com Subject: Re: [PATCH net-next] mvpp2: fix pointer check From: David Miller In-Reply-To: <20200707131913.25534-1-mcroce@linux.microsoft.com> References: <20200707131913.25534-1-mcroce@linux.microsoft.com> X-Mailer: Mew version 6.8 on Emacs 26.3 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Tue, 07 Jul 2020 13:03:39 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Matteo Croce Date: Tue, 7 Jul 2020 15:19:13 +0200 > From: Matteo Croce > > priv->page_pool is an array, so comparing against it will always return true. > Do a meaningful check by checking priv->page_pool[0] instead. > While at it, clear the page_pool pointers on deallocation, or when an > allocation error happens during init. > > Reported-by: Colin Ian King > Fixes: c2d6fe6163de ("mvpp2: XDP TX support") > Signed-off-by: Matteo Croce Applied.