From nobody Sat Oct 4 19:17:44 2025 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) (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 E5F0A27AC57 for ; Wed, 13 Aug 2025 15:43:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.69 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755099817; cv=none; b=qw61PwqNr1unSyQolTzxwQ1YkBGBP9A/58pgelNPx0fyKV8CVZEHLGDcDttefkhnYp09GGJe94c78gG93imoln+fBswVMrytxhAPp2Do7lnrdRB1oEDa9fmEQBjnf9PkZ/woFkudSK0AyBANElX1TeN8G3RSVfiWLVVtNJl98hA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755099817; c=relaxed/simple; bh=EZqnd4QbylAM7e7aG7dM5lKczJ/kfENBtLDkC/RXE2o=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=eL09JnnE6/DBManCEEQnI5sHnGoAKTbiqPInwILuR2Lr6Z19sLldP1q+9+P7bZuFFYqkqadh1KUtkPl/rmrDscWrpSX61qttAWn7Vly88zAS0btZaPyX2lRv+xSolu8JyAW/KDj+KXADO7jpqUYj4oAwyJN20YiwbvhvjcyGVNc= 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=209.85.166.69 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-io1-f69.google.com with SMTP id ca18e2360f4ac-88177d99950so646879739f.1 for ; Wed, 13 Aug 2025 08:43:34 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755099814; x=1755704614; 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=T5elhorgIFMNLHmDqTJfQO7TzeV1TdRqPz9zCjpje9U=; b=sFwzKWszHckjFWhLS+65NzZZATwe4z7cRhwkdBmgImvDFvAXKJU7vb1sjSYdwqjCC9 noBFcd+8e3kSESuMWETJsy1PyY49gN9W7XHq27iQJw6rKfD+iNg60sEddxzV5GnHedPN jNpABfP3WKl82x1CFdFQFBtH9yysY8GDVLEyzy8kBwbvnuwjGn78k8WLcQuo+hL9+S88 dq0rbgTrWS9u4/p/CXwN7z3iIERfC74IHpG1lm45iSox37qB+GRZiS0iuIWIJYQZUyeI pKTXma6ZdLH0opEBQLJ3sCcQUo2P6dwXZmzasteF1vAxmZLmdsqw1iKzHv9mGnnnL967 wxQw== X-Gm-Message-State: AOJu0YxGnn4Aesb0XTQjR8gsF4Q4NVspf2TT68JENkok7yq2sz0dzhHq /RruPpP8Vz8mLzjO5ELTDUDW86fFIgcgB9o4N++lZ97Ri6cgtHBqDPQQkoTcXHMo46gujwF2X7I 3NHQfYufkbMrabp69oAnNQtUrlvb7ODDWAfhk+X2fXLY+qwJan9oxD4Xwxps= X-Google-Smtp-Source: AGHT+IGo5BB5FUqKPzCWaEgFfeaghkL5ATyJwTRacm+/s0J3m83F1O3T2M7b8fq8Og65OXgYqpprRG68XdAnh0mf4OnNxPQWulLh Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:13c6:b0:87c:30c6:a7cf with SMTP id ca18e2360f4ac-8842950b465mr613753239f.0.1755099814067; Wed, 13 Aug 2025 08:43:34 -0700 (PDT) Date: Wed, 13 Aug 2025 08:43:34 -0700 In-Reply-To: <689a3d92.050a0220.7f033.00ff.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <689cb2a6.050a0220.51d73.00bd.GAE@google.com> Subject: Forwarded: Re: [syzbot] [kvm?] [net?] [virt?] WARNING in virtio_transport_send_pkt_info From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com 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, syzkaller-bugs@googlegroups.com. *** Subject: Re: [syzbot] [kvm?] [net?] [virt?] WARNING in virtio_transport_sen= d_pkt_info Author: mst@redhat.com #syz test: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.g= it master diff --git a/net/core/datagram.c b/net/core/datagram.c index 94cc4705e91d..ab890448f3a2 100644 --- a/net/core/datagram.c +++ b/net/core/datagram.c @@ -642,6 +642,7 @@ int zerocopy_fill_skb_from_iter(struct sk_buff *skb, return -EFAULT; =20 length -=3D copied; + iov_iter_advance(from, copied); =20 skb->data_len +=3D copied; skb->len +=3D copied;