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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 903B2C433FE for ; Tue, 9 Nov 2021 22:18:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7AC7761248 for ; Tue, 9 Nov 2021 22:18:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343571AbhKIWVD (ORCPT ); Tue, 9 Nov 2021 17:21:03 -0500 Received: from mail.kernel.org ([198.145.29.99]:41188 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245561AbhKIWUd (ORCPT ); Tue, 9 Nov 2021 17:20:33 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id C119461248; Tue, 9 Nov 2021 22:17:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1636496247; bh=4CRT7RCXMKiOsgu3ogcz06kWJVI2Tfh4ozMN2bCKil8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mNNIslf5Ttp1EMjEK+8uiSQE71j9avEujesk+b+vYb1Qy/Yf76Iz9Zk20dN1kA+Ss TfNwnL7Xyb3rOA2XN1NFMzJ+Z1B2itTUE8NO+xwFW4Y4zizoW4+nYIDC9ezIfHL4dn Ah60Yjp0wwcnf4o2orHnVD/AJAMehetFAwJyLuYXA2YgHRnflOFY3d1zzUybO7WnDB 2iEoSULcuOtB8FqfnTk/hoJ1h88M5/bzq1n7SdcmCgg/wtgb/bn1brlGKQZQDCKWJ2 cPjyUS7qqbQRO5ib7Y4KXyMm6nHRS2IZLi4Rj+M982Xe+4QfJcWjkMXiEvoBdzTSai kQ6+TfyKpipKg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yang Yingliang , Greg Kroah-Hartman , Sasha Levin , balbi@ti.com, linux-usb@vger.kernel.org Subject: [PATCH AUTOSEL 5.15 21/82] usb: musb: tusb6010: check return value after calling platform_get_resource() Date: Tue, 9 Nov 2021 17:15:39 -0500 Message-Id: <20211109221641.1233217-21-sashal@kernel.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211109221641.1233217-1-sashal@kernel.org> References: <20211109221641.1233217-1-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-usb@vger.kernel.org From: Yang Yingliang [ Upstream commit 14651496a3de6807a17c310f63c894ea0c5d858e ] It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value. Signed-off-by: Yang Yingliang Link: https://lore.kernel.org/r/20210915034925.2399823-1-yangyingliang@huawei.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/musb/tusb6010.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c index c968ecda42aa8..7ed4cc348d993 100644 --- a/drivers/usb/musb/tusb6010.c +++ b/drivers/usb/musb/tusb6010.c @@ -1104,6 +1104,11 @@ static int tusb_musb_init(struct musb *musb) /* dma address for async dma */ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!mem) { + pr_debug("no async dma resource?\n"); + ret = -ENODEV; + goto done; + } musb->async = mem->start; /* dma address for sync dma */ -- 2.33.0