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=-16.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 8B439C11F8B for ; Tue, 6 Jul 2021 12:02:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 83836620DD for ; Tue, 6 Jul 2021 12:02:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239578AbhGFL7l (ORCPT ); Tue, 6 Jul 2021 07:59:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:47598 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237129AbhGFLf4 (ORCPT ); Tue, 6 Jul 2021 07:35:56 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 6A8F161396; Tue, 6 Jul 2021 11:25:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1625570742; bh=gfyQrmm1dVOTIuU+Zhlf4gBUzVj4BPQz7GTuUDGI3bA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YLCn4y4x4kx97/iHCFW5rBSlrMyaDuVLtUk8gk6a6Je6Hk9vOANvnrX8zrJuYg3WX 4o0kwZumCYey0PWgx2Rp6sEjUjwrU1fjlJZif2pp3+XoC0hAjyjQnEfQipLkDMH7CY DFtKsteiZ4p6ivsWygMtiuWVfiJUAhEEeGa8scT01qCdEGEEZZa49Ktht40FAVwj8L +3iXmSsUS5A6XbC8H98Qff8YMyy2qt3nwZERiZ/ttj7KhXaEaIrijDQmFA+yvTZPqR 3hQ/6DOxIWOk9Hhtz/RZzOtj//yjNp3mlL7E63qvJiPwvlSXr9/Ja/1nHsgUXcaaCy dYXxlnM6j9bog== 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 5.4 31/74] net: bcmgenet: check return value after calling platform_get_resource() Date: Tue, 6 Jul 2021 07:24:19 -0400 Message-Id: <20210706112502.2064236-31-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210706112502.2064236-1-sashal@kernel.org> References: <20210706112502.2064236-1-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 dbe18cdf6c1b..ce569b7d3b35 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmmii.c +++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c @@ -426,6 +426,10 @@ 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