From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) (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 14A371CD15 for ; Sat, 20 Sep 2025 17:01:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758387703; cv=none; b=WQorC1cJ2lswFPBuvdkN0s/Zqgg7s6QBBfs0LQmloCJD2FgZk+hUtx0DxEB9zRMZo6+qN1Vic9LUIHi4oxa20nBRyVSp/0q+OEydez2Yjy1S9Jz5adUjHAVDTqVoGI0iOy3/14v5N3gOs+DmHF0wJ286xhTu1Qx07E44THrQHn8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758387703; c=relaxed/simple; bh=fYHLnc6B7Sp5mOFfjYQLABWn+g3o/H5NmZbhNSbBVR8=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=Nm1ojxzhquYUez5XW0XoOxZEXzN8235vfybUI6g0Prw+1GH8QR5NDtqzWq17lk0wJ9ME+JoveYqxKo9zHmZACPRXzu7p9TJFSiZDOVKNo+joyBQggwhvaloh20kc8WJwJiJ8Oygx0NkuuYMc/xWFLZdS0ts6GW5ygoo9vFmHdT0= 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=209.85.166.199 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-f199.google.com with SMTP id e9e14a558f8ab-42408b5749aso57268665ab.1 for ; Sat, 20 Sep 2025 10:01:41 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1758387701; x=1758992501; 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=TcA9Yux/miLrkYq7N9DxyxygIxKwKnBgy4IPa8hHFPM=; b=HrC1BKcOSTuTqcVRXh/ymvruvsV3WVl7Ejr0o051I6t4GjPFqXnIbEXOmQH5h1iIqp x/yNqnJ8AuxufnlGEcbM4kpq2/Ri4AGb9lqP69LAbaETd2iATh7XxECA84oNxKdcYRz4 hVOGz0uAumDJmEFxCWH/jBlH/1xQ9B/+TC6dwRZrRHoeoj5nC+rbS5k17GdzbsLX9clE VEpcPBuD4ZCWB+hVbeE7G0ptq+fqGD2V9unbMzdrVYEyWRKM9lLUhc/MdQB2K2oGbydQ DwOFq6c9R4YM67Vy0sxGSFVnv8xO2KuQ5crTI5JMo/kc2TFCYmhJX1GPh/cxaPSpQV+R PtRA== X-Gm-Message-State: AOJu0Yx1Iz+H+ufhjKPJRBG+v+3iFmQ/YqSJvWQ4aEHraHbQqUxhLgyb qvRldyXsj2zKElvIBvQk6Hgd3yHC7VJf9xGkhRAZGpB5ojllv95wUKM9jAloQ5G0T76ae4mMA3t iZY0MyYgrz+25efFKVeayMVp+Kgd6ngKQgR1Xw8M1tRTgUPM4dxqllWBO20o= X-Google-Smtp-Source: AGHT+IHHOM8K6D5tDSlC55IhdCcYEBEcUuqNRWLrC/izmfHLsm/E3+Bjs+2wP2BUh3SgMDwV1jTz9HzU3/VxqMBggwByXqaHw5B3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1087:b0:424:29c:dded with SMTP id e9e14a558f8ab-424416e12b5mr138222895ab.8.1758387701255; Sat, 20 Sep 2025 10:01:41 -0700 (PDT) Date: Sat, 20 Sep 2025 10:01:41 -0700 In-Reply-To: <6880f58e.050a0220.248954.0001.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68ceddf5.050a0220.13cd81.001c.GAE@google.com> Subject: Forwarded: [PATCH v2 net] net/core : fix KMSAN: uninit value in tipc_rcv From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: [PATCH v2 net] net/core : fix KMSAN: uninit value in tipc_rcv Author: hariconscious@gmail.com From: HariKrishna Sagala --- #syz test diff --git a/net/tipc/node.c b/net/tipc/node.c index a07fb073368c..f64f653e775a 100644 --- a/net/tipc/node.c +++ b/net/tipc/node.c @@ -2117,6 +2117,8 @@ void tipc_rcv(struct net *net, struct sk_buff *skb, struct tipc_bearer *b) goto discard; __skb_queue_head_init(&xmitq); hdr = buf_msg(skb); + if(!hdr) + return -EINVAL; usr = msg_user(hdr); bc_ack = msg_bcast_ack(hdr);