From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A78E31AED40 for ; Thu, 15 Aug 2024 15:35:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723736107; cv=none; b=TTD02ZXUeWfNNsG2MZr0FhWmuz2FDynO57lWqzmJghuKrgQhzEoJCI+OYGGxb4RuglbGxFw1OI3wYF7Lr4yVdRi/WNWLtkTUlZ1ncF8XpxRKNQ5sYpC5iT950YhIuUOynYGK+/TSqjz6ZZRpvCZmJYwZCpZunv/b3O5PXJGv3jo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723736107; c=relaxed/simple; bh=x8BoJ7d52qZ7IyL6xJcyH8DZnmk2NLjtc3UaRDkzoyg=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=BYdmfkGA/ehpCkXDd23pbf1nScVSilzoPKZKtNhiA9tYtOwJ3rjDHla5shEsaYQszF4pmrzt7Hpbn6ytkgFx/i5/T+C5WrBjsb0P0Yy2v57C4tkoDq2r2qCU23zaxby4rAVf6J+5U2/mxQRSd7luZmkueIkKUCKEkxbZj99oQQo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=AuMWz4sS; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="AuMWz4sS" Received: by smtp.kernel.org (Postfix) with ESMTPS id 3984BC4AF0F for ; Thu, 15 Aug 2024 15:35:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1723736107; bh=x8BoJ7d52qZ7IyL6xJcyH8DZnmk2NLjtc3UaRDkzoyg=; h=From:To:Subject:Date:In-Reply-To:References:From; b=AuMWz4sSgsYMOICb2dMh9SAWFakZt2aoYiV2MH2wC11aC0JPAjUOZDRrrUK3Lu3ez WmHyP2YI3Im4JBHbCEF0Fg1i9c2fry5IzoVvZ2DOVHtaXktijYsASqjoTkfKm2lAqJ n57twuCgZ4Ha4qupDJsTnxFA0VanIlvWHrMhinlPTtQhLWXtjN8f37sFB/tnCdnesR KGW74T9EuoW/Wh/AKrAEpfCTVKOleB9RmylPxhSLD28dd8reQ3lFrdCidR4KsrxRXb /6Iyc1S3zP7/6d3ksd2ji1PZCIIAs1ZvsudIxjMwQghpOSsvsBMUSCvn/cZDFXc1tP rybu18CPw8eVg== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 2A1C7C53BB8; Thu, 15 Aug 2024 15:35:07 +0000 (UTC) From: bugzilla-daemon@kernel.org To: kvm@vger.kernel.org Subject: [Bug 219161] VM with virtio-net doesn't receive large UDP packets (e.g 65507 bytes) from host Date: Thu, 15 Aug 2024 15:35:06 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo virtualization_kvm@kernel-bugs.osdl.org X-Bugzilla-Product: Virtualization X-Bugzilla-Component: kvm X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: seanjc@google.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: virtualization_kvm@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D219161 --- Comment #1 from Sean Christopherson (seanjc@google.com) --- On Thu, Aug 15, 2024, bugzilla-daemon@kernel.org wrote: > Large UDP packets (e.g 65507 bytes) are not received in VM using virtio-n= et > when sent from host to VM, while smaller packets are received successfull= y.=20 >=20 > The issue occurs with or without vhost enabled, and can be reproduce with > 6.5.0-rc5+ Is this 100% reproducible? And did it first show up in 6.5-rc5, i.e. does everything work as expected in 6.5-rc4? If so, bisecting will likely get y= ou a fast root cause and fix, unless someone happens to know a likely suspect. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=