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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, 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 9AAF8C4161D for ; Mon, 10 May 2021 12:16:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 79B10613C8 for ; Mon, 10 May 2021 12:16:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344626AbhEJMP7 (ORCPT ); Mon, 10 May 2021 08:15:59 -0400 Received: from mail.kernel.org ([198.145.29.99]:44218 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236472AbhEJLIN (ORCPT ); Mon, 10 May 2021 07:08:13 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id E9B3D619B7; Mon, 10 May 2021 11:01:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620644491; bh=Hryb9EaU8CgLAEfMSXOv1F6UHB9Xx/U2+Y/8wmP8DtE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=p5qfPCFoIycb1OyrKSej2Xsuqn3keygwHQ/OqrvXQ6NRhB1LXSTBK0hwWie4j4e8K EeFFdCRHDkbtcj+pdwmh1iqg4Dk+rm1zgkiAtRSuCzlloOYHBsJolnRV+Jfbc2IlZw EnPjHw8dPc3Pv8Ah7Ifn/Vjmenocrt0EOrkcQnQg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Mathias Nyman , Sasha Levin Subject: [PATCH 5.12 103/384] xhci: check port array allocation was successful before dereferencing it Date: Mon, 10 May 2021 12:18:12 +0200 Message-Id: <20210510102018.277705080@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210510102014.849075526@linuxfoundation.org> References: <20210510102014.849075526@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: linux-kernel@vger.kernel.org From: Mathias Nyman [ Upstream commit 8a157d2ff104d2849c58226a1fd02365d7d60150 ] return if rhub->ports is null after rhub->ports = kcalloc_node() Klockwork reported issue Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20210406070208.3406266-2-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/host/xhci-mem.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 3708432f5f69..717c122f9449 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -2249,6 +2249,9 @@ static void xhci_create_rhub_port_array(struct xhci_hcd *xhci, return; rhub->ports = kcalloc_node(rhub->num_ports, sizeof(*rhub->ports), flags, dev_to_node(dev)); + if (!rhub->ports) + return; + for (i = 0; i < HCS_MAX_PORTS(xhci->hcs_params1); i++) { if (xhci->hw_ports[i].rhub != rhub || xhci->hw_ports[i].hcd_portnum == DUPLICATE_ENTRY) -- 2.30.2