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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 892D5C2D0C1 for ; Thu, 19 Dec 2019 19:10:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4F44224672 for ; Thu, 19 Dec 2019 19:10:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576782631; bh=yTxjhlA0GOCxsjuGn4rKAiPTxp3UhagqMA/rASlPzQ8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ERKle8w1m93r1FaVRc4WT6KhhT2Fdd77fY9NRbRBL6IALQIZFMQteJ7MWGcs25rQm 5lguB7n3Hxc0xgCDnDvCtl38lO8iwTh5auTRhM7rYaz2UgxkidN13ReMnNFu0hq60V GyFTUHf7r3bJnJQW8LvyM9Koubnl9i2slXc5RBBc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726945AbfLSTKa (ORCPT ); Thu, 19 Dec 2019 14:10:30 -0500 Received: from mail.kernel.org ([198.145.29.99]:57818 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728208AbfLSSjb (ORCPT ); Thu, 19 Dec 2019 13:39:31 -0500 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 77FFC24680; Thu, 19 Dec 2019 18:39:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576780771; bh=yTxjhlA0GOCxsjuGn4rKAiPTxp3UhagqMA/rASlPzQ8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WrycaBp6CbcQrZdlV7zrsPoR/uaCosViPN3+xxOjBl2UAdJGYIcEQMIoC5w5kR7+K vgyHsmIUkkrWcnXIHbmPO8pHnW5XYte+KUtmo5ht5GMsUrGQ09jHxi+7zQ4CR06DEF sOWjudj+kYaAsf/wCxkTCdX3CkvFRuS/7I8zLUm0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, YueHaibing , "David S. Miller" Subject: [PATCH 4.4 073/162] appletalk: Set error code if register_snap_client failed Date: Thu, 19 Dec 2019 19:33:01 +0100 Message-Id: <20191219183212.250605627@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20191219183150.477687052@linuxfoundation.org> References: <20191219183150.477687052@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 From: YueHaibing commit c93ad1337ad06a718890a89cdd85188ff9a5a5cc upstream. If register_snap_client fails in atalk_init, error code should be set, otherwise it will triggers NULL pointer dereference while unloading module. Fixes: 9804501fa122 ("appletalk: Fix potential NULL pointer dereference in unregister_snap_client") Signed-off-by: YueHaibing Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/appletalk/ddp.c | 1 + 1 file changed, 1 insertion(+) --- a/net/appletalk/ddp.c +++ b/net/appletalk/ddp.c @@ -1927,6 +1927,7 @@ static int __init atalk_init(void) ddp_dl = register_snap_client(ddp_snap_id, atalk_rcv); if (!ddp_dl) { pr_crit("Unable to register DDP with SNAP.\n"); + rc = -ENOMEM; goto out_sock; }