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 2942BC35247 for ; Mon, 3 Feb 2020 16:20:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ED1F62087E for ; Mon, 3 Feb 2020 16:20:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580746851; bh=II7bm7gFnpRH7TiY1EXfjy9NpIByqTPjFSJhKZdIt90=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=S5h+nqGgA9leqYDoG9czQ/QvBcu/zCWKHFD35YjzNi9LeWkRgEiIA7QGRlTmpdLSm XXt3X7d474vsMk1XFI5cmq+m5VWdDNiy7UhhR8M8ccp6CQ+DpmJr2+3VKq4+yVYvWL nwV3O08xqluCnN8+/TQ+thpLmyUtBPAQAt1ciwSI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728979AbgBCQUu (ORCPT ); Mon, 3 Feb 2020 11:20:50 -0500 Received: from mail.kernel.org ([198.145.29.99]:60736 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728965AbgBCQUr (ORCPT ); Mon, 3 Feb 2020 11:20:47 -0500 Received: from localhost (unknown [104.132.45.99]) (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 0649D20838; Mon, 3 Feb 2020 16:20:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580746847; bh=II7bm7gFnpRH7TiY1EXfjy9NpIByqTPjFSJhKZdIt90=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hM/IHMxekaFawOQmfvExf32iNptlmq36JaGnZsyc0bQgDJjehbXdIap5UdRCGKYl2 GkUtJdh9lGXOkbcRtpXhMiYCiuims+LADPJcTbuLo4kefQUoFkXKztGce+pcNgPgUd +WGoB8uIyjWT5cxIcJyi+W8qKcqvNHc1QDv+Mgos= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hans Verkuil , Sean Young , Mauro Carvalho Chehab , syzbot+6bf9606ee955b646c0e1@syzkaller.appspotmail.com Subject: [PATCH 4.4 30/53] media: dvb-usb/dvb-usb-urb.c: initialize actlen to 0 Date: Mon, 3 Feb 2020 16:19:22 +0000 Message-Id: <20200203161908.525791856@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200203161902.714326084@linuxfoundation.org> References: <20200203161902.714326084@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Hans Verkuil commit 569bc8d6a6a50acb5fcf07fb10b8d2d461fdbf93 upstream. This fixes a syzbot failure since actlen could be uninitialized, but it was still used. Syzbot link: https://syzkaller.appspot.com/bug?extid=6bf9606ee955b646c0e1 Reported-and-tested-by: syzbot+6bf9606ee955b646c0e1@syzkaller.appspotmail.com Signed-off-by: Hans Verkuil Acked-by: Sean Young Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Greg Kroah-Hartman --- drivers/media/usb/dvb-usb/dvb-usb-urb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/media/usb/dvb-usb/dvb-usb-urb.c +++ b/drivers/media/usb/dvb-usb/dvb-usb-urb.c @@ -11,7 +11,7 @@ int dvb_usb_generic_rw(struct dvb_usb_device *d, u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen, int delay_ms) { - int actlen,ret = -ENOMEM; + int actlen = 0, ret = -ENOMEM; if (!d || wbuf == NULL || wlen == 0) return -EINVAL;