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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6DEEEC433F5 for ; Wed, 29 Dec 2021 17:32:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241131AbhL2RcQ (ORCPT ); Wed, 29 Dec 2021 12:32:16 -0500 Received: from verein.lst.de ([213.95.11.211]:38294 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241117AbhL2RcM (ORCPT ); Wed, 29 Dec 2021 12:32:12 -0500 Received: by verein.lst.de (Postfix, from userid 2407) id ACACB68AFE; Wed, 29 Dec 2021 18:32:09 +0100 (CET) Date: Wed, 29 Dec 2021 18:32:09 +0100 From: Christoph Hellwig To: Holger Kiehl Cc: linux-kernel , Christoph Hellwig Subject: Re: bpfilter: write fail messages with 5.15.x and centos 7.9.2009 Message-ID: <20211229173209.GA27943@lst.de> References: <71e27b99-ef9c-4563-833d-e6eab5419cdb@diagnostix.dwd.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <71e27b99-ef9c-4563-833d-e6eab5419cdb@diagnostix.dwd.de> User-Agent: Mutt/1.5.17 (2007-11-01) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org -32 is EPIPE. But it might be a good idea to include the relevant maintainers. On Wed, Dec 29, 2021 at 01:27:58PM +0000, Holger Kiehl wrote: > Hello, > > I just upgraded the kernel from 5.10.x to 5.15.12 on an old Centos > 7.9.2009 server. The kernel is build on a new fedora 35 system > via 'make binrpm-pkg'. With this I see the following errors: > > [ 232.140766] bpfilter: Loaded bpfilter_umh pid 6327 > [ 232.152144] bpfilter: write fail -32 > [ 232.187175] bpfilter: Loaded bpfilter_umh pid 6330 > [ 232.198540] bpfilter: write fail -32 > [ 232.234604] bpfilter: Loaded bpfilter_umh pid 6332 > [ 232.245916] bpfilter: write fail -32 > [ 232.281883] bpfilter: Loaded bpfilter_umh pid 6337 > [ 232.293222] bpfilter: write fail -32 > [ 232.335798] bpfilter: Loaded bpfilter_umh pid 6380 > [ 232.347157] bpfilter: write fail -32 > [ 244.411821] bpfilter: Loaded bpfilter_umh pid 6712 > [ 244.423216] bpfilter: write fail -32 > > These appear as soon as something is done via iptables (setting > something or just viewing). Is this something I need to worry > about? Under 5.10.81 I did not see these messages. > > In Jul 2020 I see a similar report 'bpfilter logging write errors in > dmesg', but could not find a solution. > > Any hint what I can do to fix this? > > Thanks, > Holger ---end quoted text---