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=-8.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 EF77CC43613 for ; Thu, 20 Jun 2019 18:30:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CA4C020665 for ; Thu, 20 Jun 2019 18:30:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561055406; bh=AFn5wCoQqPg66QmVhEFeukUE3xE1xCkBNypIGfPx8FE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ID+8/xONdTIgCSqTsleImRu7o/5liROFp/kCLC3ox4LENMaBynRdZkKr9abyiQ7X5 FU8GBALu1WuzcVOeIIrVcm5j50CJcTrZ2FsmwHrQ+cOBncqOAvHu4neIePudwlAOxB Mup98qJxyIeUaYvbRV9qUs8S4SxgMTHGA4Xz5cZY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727276AbfFTSBh (ORCPT ); Thu, 20 Jun 2019 14:01:37 -0400 Received: from mail.kernel.org ([198.145.29.99]:51398 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727272AbfFTSBh (ORCPT ); Thu, 20 Jun 2019 14:01:37 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6FE65214AF; Thu, 20 Jun 2019 18:01:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561053696; bh=AFn5wCoQqPg66QmVhEFeukUE3xE1xCkBNypIGfPx8FE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=U98VEMrF6B6sxNsbzlpOkgE8DTHwY2pv9DMxTWYo9sDLwNIil964BTZcuIE1KF1l2 zViIyBVA//2cE657xdRj6hMVr7YfQ5SfTYByeA2NGxbLlPWneiGC9WZoOujmik45Ze etSXp3Uy8LUXqKEJGOIXe5QUsl3rjG7i0emnWVko= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Varun Prakash , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 4.4 80/84] scsi: libcxgbi: add a check for NULL pointer in cxgbi_check_route() Date: Thu, 20 Jun 2019 19:57:17 +0200 Message-Id: <20190620174349.020609384@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190620174337.538228162@linuxfoundation.org> References: <20190620174337.538228162@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org [ Upstream commit cc555759117e8349088e0c5d19f2f2a500bafdbd ] ip_dev_find() can return NULL so add a check for NULL pointer. Signed-off-by: Varun Prakash Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/cxgbi/libcxgbi.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c index f3bb7af4e984..5eaf14c15590 100644 --- a/drivers/scsi/cxgbi/libcxgbi.c +++ b/drivers/scsi/cxgbi/libcxgbi.c @@ -634,6 +634,10 @@ static struct cxgbi_sock *cxgbi_check_route(struct sockaddr *dst_addr) if (ndev->flags & IFF_LOOPBACK) { ndev = ip_dev_find(&init_net, daddr->sin_addr.s_addr); + if (!ndev) { + err = -ENETUNREACH; + goto rel_neigh; + } mtu = ndev->mtu; pr_info("rt dev %s, loopback -> %s, mtu %u.\n", n->dev->name, ndev->name, mtu); -- 2.20.1