From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 14F7DC4363A for ; Mon, 26 Oct 2020 16:27:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B7F9C22400 for ; Mon, 26 Oct 2020 16:27:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603729632; bh=Jj7dXCUIRqXuMcm2U5jO9g/0PrOCjPgS1uEqXYKx9+4=; h=Date:From:To:Cc:Subject:In-Reply-To:References:List-ID:From; b=QQjHwU60wTn+Jta66Pqjuoowfcp+UH9gRLA/zV8DrJ+S7FT+FT1rIMo9Qs1j30IuI g9B5hbWg1FuNV83cWy9dawWxfqQ+vnWM3BJVxevowlmZIUnQ+PIgeGdynurOaAr9v/ /KwfMNJjrDZq3CPkr9CWZlgALk6mDwpbeIY6rqhU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1785923AbgJZQ1L (ORCPT ); Mon, 26 Oct 2020 12:27:11 -0400 Received: from mail.kernel.org ([198.145.29.99]:35108 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1776154AbgJZQ1L (ORCPT ); Mon, 26 Oct 2020 12:27:11 -0400 Received: from kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net (unknown [163.114.132.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3EA8122284; Mon, 26 Oct 2020 16:27:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603729631; bh=Jj7dXCUIRqXuMcm2U5jO9g/0PrOCjPgS1uEqXYKx9+4=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=sU6hDYuxK0umlYJ7JKxuxkqaInVTgg/FxiXTyAxCHZCQPnYukLUK0zVC0+bZ1yvCv ONEmDgTmQazIwtgy5/j51GFR3absqH1+GVir8MyTeWmcM+l5ak1aBK0C4VpUF0ylnO 3WKGYvNcbTKEbotfFD+rr2haXp+qCW5eBeMXUOhA= Date: Mon, 26 Oct 2020 09:27:10 -0700 From: Jakub Kicinski To: Joakim Tjernlund Cc: "netdev@vger.kernel.org" Subject: Re: arping stuck with ENOBUFS in 4.19.150 Message-ID: <20201026092710.467c96e0@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net> In-Reply-To: References: <9bede0ef7e66729034988f2d01681ca88a5c52d6.camel@infinera.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Mon, 26 Oct 2020 12:58:16 +0000 Joakim Tjernlund wrote: > On Thu, 2020-10-22 at 17:19 +0200, Joakim Tjernlund wrote: > > strace arping -q -c 1 -b -U -I eth1 0.0.0.0 > > ... > > sendto(3, "\0\1\10\0\6\4\0\1\0\6\234\v\6 \v\v\v\v\377\377\377\377\377\3= 77\0\0\0\0", 28, 0, {sa_family=3DAF_PACKET, proto=3D0x806, if4, pkttype=3DP= ACKET_HOST, addr(6)=3D{1, ffffffffffff}, > > 20) =3D -1 ENOBUFS (No buffer space available) > > .... > > and then arping loops. > >=20 > > in 4.19.127 it was: > > sendto(3, "\0\1\10\0\6\4\0\1\0\6\234\5\271\362\n\322\212E\377\377\377\3= 77\377\377\0\0\0\0", 28, 0, {=E2=80=8Bsa_family=3DAF_PACKET, proto=3D0x806,= if4, pkttype=3DPACKET_HOST, addr(6)=3D{=E2=80=8B1, > > ffffffffffff}=E2=80=8B, 20) =3D 28 > >=20 > > Seems like something has changed the IP behaviour between now and then ? > > eth1 is UP but not RUNNING and has an IP address. Seems like nobody knows off the top of their heads. Any chance you can try 5.10-rc1 ? Or 5.9 ? Or some versions in between 4.19.127 and 4.19.150 to narrow down the search?