From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E95B71F76A8 for ; Tue, 3 Dec 2024 15:28:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733239699; cv=none; b=lvgAfDGfOuvDv8hxER2hr7jns2orq1kcjr0bt+zzwQZuc7apuRTKdobYfehxU9Ycc1psncBJTKj2N5NfNyE3O3G5NNe+qwoXfAuLEzmGdlqqe3IW8gTZVClSnWh7aPwV4f+q9c5Z2QNqkFiux9S0M2wsQVGZWWxM3+4buG0QC4U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733239699; c=relaxed/simple; bh=KKArLD2PtA+0fQiwv05bnHE0KuyHHIErcEbFZSDiyew=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=bz9r9BZHE0orp8YbPLcShc1jYU+SYHDtuH6itfGF6Jv5vpmm3hXrBjxvinS1rh08TeFshKjEnfkyeiovXchFxGWKyDhuE1OiqpFmUJ6J1Yz59/xJnwpHpYh+9nLLv+lSx3sR234bQ6cJeal4bipVo1+GAK0/DJSmCeZudaBZD4U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.200 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f200.google.com with SMTP id e9e14a558f8ab-3a7c729bfbaso60249705ab.0 for ; Tue, 03 Dec 2024 07:28:16 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1733239696; x=1733844496; 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=szv38NxdIHplzP9jE1syYGjbmBichZ65BAZ5VuKYs4c=; b=QHYGikyYheWXlMELe87wIJli2C+Y/i5LNTe+1+5Ebl1zfCGZIOTSO48yJgLbR3vLfP dHl5Hw85TmVges0CGewVMPeGlMPFITFPJuNBxW3U9sRKBZuX1L6XVtU3Awezlbmcf5yS 2eEVY5BHOBlVn/bbtYTK0glWSZ1TV3kypQnw643IOu/VcxcklHddTJ5IOlgE19y5orti RgE5awEB6W5G7aLcCdUL9HHmrXoQZ9pX1xkGpMDoF2aMsaL5EyRw/N5DIzAKOL467S1K iemV5arHAaQX2sdisB9oIgTIhB/OKlCl+qg/shsLHIS8ghvcSBS3Tm9Snpwv5b7H154N p/AQ== X-Gm-Message-State: AOJu0Yx+nOH2E0Z8saO6OZGuUFzkOxCM9bjofcpTC1M0cM5MX7UXGrx/ 7gDNTM6lhEYd8lDr4ej9HbYhWY2Q5957P156u77WmBXZMIco8Zv9wnPSlrr0SSZVCsXsxnrKuvv ii13XAZhCiHEZabElc+XSlCeniUpTsMdkobSWpVaBXF29rm29rg5lqmQ= X-Google-Smtp-Source: AGHT+IGGghU1f+T3bgD6X4cCYNtk//AHyzTcS3oLLJ6CAUMiYKa64MMjFBqCEQb4cTBH34ACZAlLv/Cya8tuXSJ3YSBOqDc/YJzI Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:2164:b0:3a7:7811:1101 with SMTP id e9e14a558f8ab-3a7f9aa4753mr41859905ab.20.1733239696142; Tue, 03 Dec 2024 07:28:16 -0800 (PST) Date: Tue, 03 Dec 2024 07:28:16 -0800 In-Reply-To: <67409854.050a0220.363a1b.013f.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <674f2390.050a0220.17bd51.0047.GAE@google.com> Subject: Re: [syzbot] Re: KMSAN: uninit-value in ip6table_mangle_hook() From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com. *** Subject: Re: KMSAN: uninit-value in ip6table_mangle_hook() Author: dmantipov@yandex.ru #syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git cdd30ebb1b9f36159d66f088b61aee264e649d7a diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index 48fd53b98972..0d4a213ce145 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -1098,7 +1098,7 @@ int ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev, __u8 dsfield, unsigned int max_headroom = psh_hlen; __be16 payload_protocol; bool use_cache = false; - u8 hop_limit; + u8 hop_limit = 0; int err = -1; payload_protocol = skb_protocol(skb, true);