From nobody Fri Dec 19 19:02:46 2025 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) (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 83125302742 for ; Fri, 7 Nov 2025 10:19:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.197 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762510749; cv=none; b=tz2K3C1AGzkQ0BPtS1hKHONYJfXURFuG03iiO30xvLGaSE9pS2X65+orcedjWfFoCfuM+j06ZNIkqU2JSdeArfrsc1hzfNcCzmIN6j5l68xL/nqzeEB395jz8t2heHBylptAHm7N78/maXTqCirXlndZhmo85xHfQ5wIeJJ3t80= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762510749; c=relaxed/simple; bh=EZGIFJvByxcAOCQSvKHDej+rtfnkrb9BQoDUbQxTito=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=jzNSMnRVrLJjG+ycq9I0Ih0tdqwfeRb6Os0aVParAg47DGT9Olm8Y4XRpOEmZbvPsVZtnmRYvoiD19UoPhYn9mQTx6ZYlQV3ertd1fxvIV2gKU3aL+1yFevl6oSD1DyDi7F2nibE5pArVguqxnao//zw6IJLCK+uYDc5K8lXap8= 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=209.85.166.197 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-f197.google.com with SMTP id e9e14a558f8ab-43324a2096fso5268035ab.0 for ; Fri, 07 Nov 2025 02:19:06 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1762510745; x=1763115545; 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=SXob5kzfRbZgBNTqpUba9bLDM5Reu1CH+ojzczzZ5Ic=; b=kSCfLxTFByVNgKuUv/g/Ni/9VJtOxZJ7TDWpt6h7Vb7QL6lLmqpt0ubKkAZx3q8t7T 7ZvExmd9mo+EDn1uJi7sQFoXSiKGS9B9fmDYxxP3QuUbJI3N95spmOEnqcMO4pAH7Fyp kkkIqAguWrqM9mAI/Fg0dsG7CGOZzOUDMwG8vd6nIm3P9Wn3U76EIGuNfZ69hRxtACem pTN3XOogfhFFChCELJNcxDnN19f/lRULjV/ZMs+BayHPlFf2kdm3R+YSnHkUO8Iq1ht+ rfSOveNc5UPf9ziRlLzcyqTEZdi/4UVICMXqRWSSRm3F8p9+5KOR3T3s9Q9a5AR+2Lz9 cxLg== X-Gm-Message-State: AOJu0YxeB5Psqkdf25iJEzSboGC+gaPAWK4jIEk8HT+r6getpdfSu3Xt 4jK20hlUpWJMHF4Oopn5xpLzORlko1Uphd3yAWo4IC3446PSxKJM3GuE4EYW3NTDSJ8mpwxd2E3 4n0GrH6YWV9We3cBg2Ht5ygcRHMRtGaYCnq4O59w0i9sGRAXVv2KugLm80nc= X-Google-Smtp-Source: AGHT+IGCrpu21wmKWX4aBYxZ7hOTdPZjYnyTfB43s6YVWt6bbL1oQzTUWJibhLRY2l3Kq5E5h6vT/cm08+IrcTyjrrBr4evvilAI Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:2304:b0:433:1cd2:2fe2 with SMTP id e9e14a558f8ab-4335f38f1c5mr40002685ab.7.1762510745686; Fri, 07 Nov 2025 02:19:05 -0800 (PST) Date: Fri, 07 Nov 2025 02:19:05 -0800 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: <690dc799.a70a0220.22f260.0034.GAE@google.com> Subject: Forwarded: [PATCH] net: core: fix KMSAN: unint value in tipc_rcv From: syzbot To: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: [PATCH] net: core: fix KMSAN: unint value in tipc_rcv Author: hariconscious@gmail.com #syz test diff --git a/net/tipc/msg.c b/net/tipc/msg.c index 76284fc538eb..4c22cce4be30 100644 --- a/net/tipc/msg.c +++ b/net/tipc/msg.c @@ -71,6 +71,8 @@ struct sk_buff *tipc_buf_acquire(u32 size, gfp_t gfp) skb =3D alloc_skb_fclone(BUF_OVERHEAD + size, gfp); if (skb) { + pr_info("tipc_buf_acquire data len: %d\n", skb->data_len); + memset(skb->data, 0, skb->data_len); skb_reserve(skb, BUF_HEADROOM); skb_put(skb, size); skb->next =3D NULL;