From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f69.google.com (mail-oo1-f69.google.com [209.85.161.69]) (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 66A2E1D31B9 for ; Sun, 7 Dec 2025 16:21:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765124483; cv=none; b=dBunrQ0PyNRLuPKJFbGXyaU73C042PvJipNPKHQlpnh45OAM7p6z85EHTCQpKgUS1SWZUkkreaWoblt7Gnp2DwaqxYnXjkhC6uQVVWaHnW8os6jyvlRp7iavJSobENAthfKFvcIIbI4NdIvROS081NlS0APDgq4v7JA0o1Ms1+4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765124483; c=relaxed/simple; bh=sqBd7teEmiqcWftfCyDPVX/qYuxigHNRX21NcR+fUHo=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To:Cc: Content-Type; b=lxrjDmxVumrWEv2Xq++wqcZcYukOem01AlHTObMqmLdgqVMQDCZu7JGRO7Jf3irg/zIdLrLpm9hS9Rls0/qPuH8DWUny05iQ83R3XYX8nXiq15erQOY6OpO6uenOyXY4UpZ2I4TNaLZQtEOpxaHCvCfjUN+Nor3eF8NaCtYP3Wo= 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=209.85.161.69 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-oo1-f69.google.com with SMTP id 006d021491bc7-65979a343e5so4684843eaf.1 for ; Sun, 07 Dec 2025 08:21:22 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1765124481; x=1765729281; h=cc: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=yK8hTqy8PVIXC39GgrO6qaY/nPQFjAa27XyPkw3RyI4=; b=hpzrQTOSPGKNi0xOdervSTnebCshk0zcoDgRjWb6As6Iw5SonnGiUYEuIjKucpg1g4 qzNrBbYsccswGYisL7xbG+erjeKFd8SBg7B4bjezIvTjOz6W1fZZu09MrWpiXO00tFMp Y15FqPyAqiljgsdt1mHTUPyqc46xqj/owGtfCm1AyfpEB7fFMXMb05di4KQlbxKvYl8w rYC7zOf/tVz421mELui5dgGF2l7IOwBE/PqNLpcBmZbFWiwqHIb0kYAFe5fEnX6cEQ30 +zZLh8aBH4xL3tUT0mmMbZRFxiuLmrWv9nCkONIwuQjSH1+67FDNcN4OG5q8W87Z83Oy 8kHA== X-Gm-Message-State: AOJu0YzJocn7kDjkY8tBXtMXtbz0f7pAvR6fVGjFDvUo3c0j4ThKLK8M hFtfkQysuO27ctsQTKyaf10AlEFBf2/fqqYG2gv6iFfndzL79tu/EuevmfpjbUiQkcsL+OVT35c a+5mIYNDJr4X6YVqUjef9PxIRiumYK+qT1Q3jCej1mOJhMLL7bHcIEM/aWvw= X-Google-Smtp-Source: AGHT+IFh9TFBCX0S1kX5TEG56FoAUjZgdDsIWiTZdA0k6Dts2hm119IsO72pnfLL7c7y4oRJxImuBbJhARYhHtIdJjk+xHXHmhI5 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1993:b0:659:9a49:8f4e with SMTP id 006d021491bc7-6599a8e16c5mr2094054eaf.19.1765124481552; Sun, 07 Dec 2025 08:21:21 -0800 (PST) Date: Sun, 07 Dec 2025 08:21:21 -0800 In-Reply-To: <20251207162109.113159-1-tayyabfarooq1997@outlook.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6935a981.a70a0220.38f243.0064.GAE@google.com> Subject: Re: [PATCH] memset skb to zero to avoid uninit value error from KMSAN From: syzbot To: syedtayyabfarooq08@gmail.com Cc: netdev@vger.kernel.org, syedtayyabfarooq08@gmail.com, tayyabfarooq1997@outlook.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" > Signed-off-by: Syed Tayyab Farooq > --- > > Hi syzbot, > > Please test this patch. > > #syz test: https://syzkaller.appspot.com/bug?extid=0e665e4b99cb925286a0 This crash does not have a reproducer. I cannot test it. > > Thanks, > Tayyab > > > net/phonet/af_phonet.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c > index a27efa4faa4e..9279decd680b 100644 > --- a/net/phonet/af_phonet.c > +++ b/net/phonet/af_phonet.c > @@ -208,6 +208,8 @@ static int pn_raw_send(const void *data, int len, struct net_device *dev, > if (skb == NULL) > return -ENOMEM; > > + memset(skb, 0, MAX_PHONET_HEADER + len); > + > if (phonet_address_lookup(dev_net(dev), pn_addr(dst)) == 0) > skb->pkt_type = PACKET_LOOPBACK; > > -- > 2.43.0 >