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=-8.4 required=3.0 tests=DKIM_ADSP_ALL,DKIM_INVALID, DKIM_SIGNED,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 626F3ECE58F for ; Tue, 15 Oct 2019 20:20:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 355FA2083B for ; Tue, 15 Oct 2019 20:20:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=valentin-vidic.from.hr header.i=@valentin-vidic.from.hr header.b="iHkOuo1b" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729473AbfJOUUg (ORCPT ); Tue, 15 Oct 2019 16:20:36 -0400 Received: from valentin-vidic.from.hr ([94.229.67.141]:45561 "EHLO valentin-vidic.from.hr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726252AbfJOUUg (ORCPT ); Tue, 15 Oct 2019 16:20:36 -0400 X-Virus-Scanned: Debian amavisd-new at valentin-vidic.from.hr Received: by valentin-vidic.from.hr (Postfix, from userid 1000) id BD09E3BE3; Tue, 15 Oct 2019 22:20:31 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=valentin-vidic.from.hr; s=2017; t=1571170831; bh=r5jgY9ifSUvOUd+gKIcDCcH7C/V28agy969gTcxV0eA=; h=From:To:Cc:Subject:Date:From; b=iHkOuo1boWn8/LsMRocAMddV/OPGaik8ITt96W9ALN32dgiAjzcc1Ac6SVqhAXAln ridBilD6G2ihAVPkZImuUtOxHFoNNw4Al20QzxxNk35eIiAO4aCB5JM3xVxY3TFEZy jtY9h06zFu341M6o689XwDa7sH7gK8tZeUODS2+rfU5WjRl7peSI5PQh396iZaIRD8 MnVTMb1ky7oelvurQRKbNMq/patLb7x+5EmaklQG8gaEw7POPMv8reYGZ9g8LMi0do YZXsr5GpbFEF+3hqlolXAMma7Kc2eO9zcHh37zKpF9qapPZiwK0Bp+kUF0t+fmC7Vi vT9xNMvREnWbQ== From: Valentin Vidic To: "David S. Miller" Cc: Chuhong Yuan , linux-usb@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Valentin Vidic , syzbot+f1842130bbcfb335bac1@syzkaller.appspotmail.com Subject: [PATCH] net: usb: sr9800: fix uninitialized local variable Date: Tue, 15 Oct 2019 22:20:20 +0200 Message-Id: <20191015202020.29114-1-vvidic@valentin-vidic.from.hr> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Make sure res does not contain random value if the call to sr_read_cmd fails for some reason. Reported-by: syzbot+f1842130bbcfb335bac1@syzkaller.appspotmail.com Signed-off-by: Valentin Vidic --- drivers/net/usb/sr9800.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/usb/sr9800.c b/drivers/net/usb/sr9800.c index c5d4a0060124..681e0def6356 100644 --- a/drivers/net/usb/sr9800.c +++ b/drivers/net/usb/sr9800.c @@ -335,7 +335,7 @@ static void sr_set_multicast(struct net_device *net) static int sr_mdio_read(struct net_device *net, int phy_id, int loc) { struct usbnet *dev = netdev_priv(net); - __le16 res; + __le16 res = 0; mutex_lock(&dev->phy_mutex); sr_set_sw_mii(dev); -- 2.20.1