Received: by 2002:a25:8b91:0:0:0:0:0 with SMTP id j17csp4014029ybl; Mon, 3 Feb 2020 10:51:59 -0800 (PST) X-Google-Smtp-Source: APXvYqwiOYYb8c0g/jgPU5wtygaaUoEXDUA1ZAls+vQw+SQcOoEXM697OMu4/vnmxH25ku+OtN2G X-Received: by 2002:a05:6830:1555:: with SMTP id l21mr17869240otp.41.1580755919666; Mon, 03 Feb 2020 10:51:59 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1580755919; cv=none; d=google.com; s=arc-20160816; b=Rowkes6s7r1nB324KOhkTiWsPT9zqYtWkKijlH7gsH5nh0aqb3jlpchzxv3QvxdBL/ 9Y0n7fat/qvPVDw9NqfbeHwFIzBS2FGKEz6fB8bCzTaOydezPbt/TDX9Z52a4+3P0H6l t0anLaibRbKQeSq8tdZaDQrAUQTJj+uP8X6C0u7wgjPqsXorY9VM8YWKb6YXiXJOEG/H /xcqzWrJ5DSVoFh4UZtwDAXYb3NTH8EbZmZeaZV00ST7SCwR77+yF2hWTT2XfjmGkXXn EXKNwmP+ZqBegvzmAV0OeVAl/2YWG8gSwEU6T76PaPrEiM5OcRCNj3/Yw0/r4/rlYias FchA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :user-agent:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=wtHHqvjxS5oPH54Oe5lk4QwUdiip1MBhfBQu0/CV714=; b=0gZ6qoween74+NUsS0+hA8ScTz/Jr8BfYmqNER8ssGDiZ005RJ8uF/0N1ZkIEjnGT6 gethlS7WLD/NNL5MZC0Z5fx0JT1vjiT7Q1zmbR8kTaJ+Hr8gkFwKTDY7kGpvV+L3krQx tyb4y/1VnsC++cRh4hwZNRiMeFkHEENzFV/PCSi4sBz8UoeJRkHy8XGnyrVGMYRPCswE dd/XHhm7BdFCBL/5JGCPglzAoB0yKvrblvBVcCuNhhTSMZO4UWrSKrz9T3P3KSMawjEg +UHuimNu8fMAIEYVIdcTx1Kc7FQTzpZQUNw6DeI1y/O6v169OB80riOjrqo4FP3KJqJg wwjg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=ebAQPYBp; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id e26si4473261oii.88.2020.02.03.10.51.47; Mon, 03 Feb 2020 10:51:59 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=ebAQPYBp; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731507AbgBCQii (ORCPT + 99 others); Mon, 3 Feb 2020 11:38:38 -0500 Received: from mail.kernel.org ([198.145.29.99]:54526 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731506AbgBCQib (ORCPT ); Mon, 3 Feb 2020 11:38:31 -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 266F121775; Mon, 3 Feb 2020 16:38:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580747910; bh=KQRTBNGIx/d9uZvKRGCFrbPP4MYDMOG24kIsgdaTp+g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ebAQPYBptgzmtHmfexcATmOELJ9vFph8onkEXb+MVnbbRme8pNbRPNtRr9KeEEQTC hNC3T3HACYMYWcwjJCYD/10/3eriQLRT4CPL9oPc+B7gFeBKYDpKoIG1aXeUt2k31y 0MhYMEWNSAlzQs7j2p5TgCCRJWNK2SiDzOH9PFUc= 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 5.5 19/23] media: dvb-usb/dvb-usb-urb.c: initialize actlen to 0 Date: Mon, 3 Feb 2020 16:20:39 +0000 Message-Id: <20200203161906.309094277@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200203161902.288335885@linuxfoundation.org> References: <20200203161902.288335885@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 @@ -12,7 +12,7 @@ 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;