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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E037DC43334 for ; Mon, 13 Jun 2022 13:12:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1359306AbiFMNMz (ORCPT ); Mon, 13 Jun 2022 09:12:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43454 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1359296AbiFMNJq (ORCPT ); Mon, 13 Jun 2022 09:09:46 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B47931F639; Mon, 13 Jun 2022 04:19:58 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 5301660B6B; Mon, 13 Jun 2022 11:19:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5A001C3411F; Mon, 13 Jun 2022 11:19:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1655119197; bh=/iUON9WW6bsYbfVqaGxLRyqJA2zgabLnd46UiDlgoD8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=J8i3CLW5XAZP0ZAqQYZcixVwzclcv/QwDK//cP4cbVORVkhsed4Q1SblAj3Um+Zfo nYTqYryYl4AsW6QmBvO7CU466vCljOOjNE27ybxs/gvyh/ItgZ8g5ptYGUXQQnx61R ishp3jLJtMCV6XwvQwEq2PB9tjfaivE1ScSkENY8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Zhen Ni , Sasha Levin Subject: [PATCH 5.15 176/247] USB: host: isp116x: check return value after calling platform_get_resource() Date: Mon, 13 Jun 2022 12:11:18 +0200 Message-Id: <20220613094928.293478831@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220613094922.843438024@linuxfoundation.org> References: <20220613094922.843438024@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Zhen Ni [ Upstream commit 134a3408c2d3f7e23eb0e4556e0a2d9f36c2614e ] It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value. Signed-off-by: Zhen Ni Link: https://lore.kernel.org/r/20220302033716.31272-1-nizhen@uniontech.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/host/isp116x-hcd.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c index 8835f6bd528e..8c7f0991c21b 100644 --- a/drivers/usb/host/isp116x-hcd.c +++ b/drivers/usb/host/isp116x-hcd.c @@ -1541,10 +1541,12 @@ static int isp116x_remove(struct platform_device *pdev) iounmap(isp116x->data_reg); res = platform_get_resource(pdev, IORESOURCE_MEM, 1); - release_mem_region(res->start, 2); + if (res) + release_mem_region(res->start, 2); iounmap(isp116x->addr_reg); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(res->start, 2); + if (res) + release_mem_region(res->start, 2); usb_put_hcd(hcd); return 0; -- 2.35.1