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,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 37102C35247 for ; Mon, 3 Feb 2020 16:31:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ED3F621741 for ; Mon, 3 Feb 2020 16:31:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580747502; bh=KQRTBNGIx/d9uZvKRGCFrbPP4MYDMOG24kIsgdaTp+g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=d8rGidmyrsDo2BvDuxidzP/V6Z1yG9uqDmFOhK1EAvvPho92fLxWHcpnqWJpZ/RBA lTuHEFDDmqkAo9lV0TdhrJcwg4gw83znKkofIhr+94actzEhq49bxNTrO/c0oPAiPu b37iMYrL4D/VJnmSuqx6jmCCfu2kDzHg8X7JoFTo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729951AbgBCQbl (ORCPT ); Mon, 3 Feb 2020 11:31:41 -0500 Received: from mail.kernel.org ([198.145.29.99]:44930 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730248AbgBCQbh (ORCPT ); Mon, 3 Feb 2020 11:31:37 -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 98CB721775; Mon, 3 Feb 2020 16:31:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580747497; bh=KQRTBNGIx/d9uZvKRGCFrbPP4MYDMOG24kIsgdaTp+g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cYpRuovlT/3pnw0J+xqpXjiOmxi8i5wvREJLOFCGaKOFZdkHhxHeYWInBfLsb1M6u 3LzZII6SdMQAhDZY8ieKD+De3h9kcoEWGZTiP9kXP5wtQOGR4GopvHa0XOXvDc9rHZ 3CRHHUacScC1kDVOPdMg9uf+Nm1rQDFz+picWXAk= 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 4.19 19/70] media: dvb-usb/dvb-usb-urb.c: initialize actlen to 0 Date: Mon, 3 Feb 2020 16:19:31 +0000 Message-Id: <20200203161915.388634293@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200203161912.158976871@linuxfoundation.org> References: <20200203161912.158976871@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;