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=-20.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 6F4DFC11F91 for ; Tue, 6 Jul 2021 11:34:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6859061396 for ; Tue, 6 Jul 2021 11:34:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237642AbhGFLgU (ORCPT ); Tue, 6 Jul 2021 07:36:20 -0400 Received: from mail.kernel.org ([198.145.29.99]:35572 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234279AbhGFL1S (ORCPT ); Tue, 6 Jul 2021 07:27:18 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id B92A261C75; Tue, 6 Jul 2021 11:20:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1625570401; bh=n4e4i6b7pu+S+LOQhnplVOflen9SPRukJwk4NQNpG+A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CXtWmcqD9oPfW8Mx3Vpcw3UQVzp5fTOIwBMboFw1PDHWcBLP8ta28dphnQlUUo+xD iQtDumeXo2GRP4kBQ0+6T171boNTty1z0P8GK1juEPXKPgvdZAs448uO52SCoJTSA5 hFxKOg0k59zsYnyZTqT/gsD3Ybvu9uZ2h7x0gTVu5Qzfg2gwytM/8C5tPlfe4Q5UL8 uYh0tflCK1QAooyynIkJ8AdBdDYUrJxEJWQEFGcdbzbk5yfRRMZPf/ko3IvUgp2Npm LOewSXt3slE4M8GkpX516QS4SZ+j+/fXafvdYKPe67Cm0duqh0ncPPIkof9JzJ7jKp DLb+cXIiAFeOg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yang Yingliang , Florian Fainelli , "David S . Miller" , Sasha Levin , bcm-kernel-feedback-list@broadcom.com, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 5.12 071/160] net: bcmgenet: check return value after calling platform_get_resource() Date: Tue, 6 Jul 2021 07:16:57 -0400 Message-Id: <20210706111827.2060499-71-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210706111827.2060499-1-sashal@kernel.org> References: <20210706111827.2060499-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yang Yingliang [ Upstream commit 74325bf0104573c6dfce42837139aeef3f34be76 ] It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value. Signed-off-by: Yang Yingliang Acked-by: Florian Fainelli Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/broadcom/genet/bcmmii.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c index 5335244e4577..89d16c587bb7 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmmii.c +++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c @@ -423,6 +423,10 @@ static int bcmgenet_mii_register(struct bcmgenet_priv *priv) int id, ret; pres = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!pres) { + dev_err(&pdev->dev, "Invalid resource\n"); + return -EINVAL; + } memset(&res, 0, sizeof(res)); memset(&ppd, 0, sizeof(ppd)); -- 2.30.2