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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 968EBC61D99 for ; Thu, 23 Nov 2023 00:07:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229637AbjKWAGy (ORCPT ); Wed, 22 Nov 2023 19:06:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45180 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229453AbjKWAGx (ORCPT ); Wed, 22 Nov 2023 19:06:53 -0500 Received: from mail-pf1-f197.google.com (mail-pf1-f197.google.com [209.85.210.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A1F8F11F for ; Wed, 22 Nov 2023 16:06:50 -0800 (PST) Received: by mail-pf1-f197.google.com with SMTP id d2e1a72fcca58-6c4d0b51c7fso409384b3a.2 for ; Wed, 22 Nov 2023 16:06:50 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700698010; x=1701302810; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=eTdAz8rR/cyp5kTMf3sQ+1Xdn84UuzjX2VTkhXz5Uzo=; b=QL7QU1b0FBMr533XjYj3AjyofeVNz7HNCMm5ynhiRMuj5HasFYfeoT6zUspxKl/FWP uhyRZzMxMvv5OmlP/FOxdRIDw8PgB+TA+5Mu9SsLHLZu0uaorV6mwUv9dsFyrx5RLax7 rEhFDVBO3hl2czPEtAbbuMWv1VfomAMA6r3PzMzOvKk7Q8GwniCnP1byEPva83tLK4ao 6JxCIa1oh1zZqC1YoeZxbeLF+/WfkchB6FWFUd6fhbZXjK6OK92e069kMGD+RQHU4lsA uhUMZUT0Em5MTOit9MSyeWH+0ZMd8P3y515NTDCuBeVfwsENBUjQU0S0eFMk/f7JGP9S Sa9Q== X-Gm-Message-State: AOJu0YztzKMMAz0ABIMZKXBF95RXf0zAsp40rRdwWWtaEb6u5Es/ouj2 iaczSbKzq43bgNE9p5vlZDZuv+Myv7uqvAaTjQUQExAnhs211MU= X-Google-Smtp-Source: AGHT+IG2OO9lH5PEb+VcMwa2PtA3qnZlWCdgzyzzL+XluFlLlo0Om/02ILlHjViUzws2UfPsLHU47unbnYIaJhA3usG1zs8Cvh+O MIME-Version: 1.0 X-Received: by 2002:a05:6a00:1d19:b0:6c2:bca7:640b with SMTP id a25-20020a056a001d1900b006c2bca7640bmr1017193pfx.3.1700698010207; Wed, 22 Nov 2023 16:06:50 -0800 (PST) Date: Wed, 22 Nov 2023 16:06:50 -0800 In-Reply-To: <000000000000545a26060abf943b@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c4cb01060ac69c14@google.com> Subject: Re: [syzbot] [mptcp?] KMSAN: uninit-value in mptcp_incoming_options From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: [mptcp?] KMSAN: uninit-value in mptcp_incoming_options Author: eadavis@qq.com please test uninit-value in mptcp_incoming_options #syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git c2d5304e6c64 diff --git a/net/mptcp/options.c b/net/mptcp/options.c index cd15ec73073e..c53914012d01 100644 --- a/net/mptcp/options.c +++ b/net/mptcp/options.c @@ -108,6 +108,7 @@ static void mptcp_parse_option(const struct sk_buff *skb, mp_opt->suboptions |= OPTION_MPTCP_DSS; mp_opt->use_map = 1; mp_opt->mpc_map = 1; + mp_opt->use_ack = 0; mp_opt->data_len = get_unaligned_be16(ptr); ptr += 2; }