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=-0.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 8DFD9C35242 for ; Fri, 7 Feb 2020 17:08:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6FB00214AF for ; Fri, 7 Feb 2020 17:08:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727129AbgBGRIU (ORCPT ); Fri, 7 Feb 2020 12:08:20 -0500 Received: from mout.kundenserver.de ([212.227.17.24]:57065 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726867AbgBGRIU (ORCPT ); Fri, 7 Feb 2020 12:08:20 -0500 Received: from mail-lj1-f174.google.com ([209.85.208.174]) by mrelayeu.kundenserver.de (mreue109 [212.227.15.145]) with ESMTPSA (Nemesis) id 1MN5W7-1jGPTj1UO5-00J5cC; Fri, 07 Feb 2020 18:08:18 +0100 Received: by mail-lj1-f174.google.com with SMTP id d10so42636ljl.9; Fri, 07 Feb 2020 09:08:18 -0800 (PST) X-Gm-Message-State: APjAAAVG+HQjcCudOoMKOtklYFVo0H2f2va+Q5TUdse1BQZJvhZ/4iRd HBxOuhz1sy5wNEtN/aj4CSLlJr1jINKtQ5Uxxqg= X-Google-Smtp-Source: APXvYqw9u3WcxbpVw6rO3j9Ozu9XMB+H2m1FoTnlA7ltWTv2RF4oTSzNzORrzx5UZNelPR7iZjN33BiBam2VYEndX7Q= X-Received: by 2002:a2e:5056:: with SMTP id v22mr142178ljd.164.1581095297786; Fri, 07 Feb 2020 09:08:17 -0800 (PST) MIME-Version: 1.0 References: <20200203095325.24c3ab1c@cakuba.hsd1.ca.comcast.net> <87tv441gg1.fsf@mpe.ellerman.id.au> <42888ad2-71e0-6d03-ddff-3de6f0ee5d43@xenosoft.de> In-Reply-To: <42888ad2-71e0-6d03-ddff-3de6f0ee5d43@xenosoft.de> From: Arnd Bergmann Date: Fri, 7 Feb 2020 17:08:06 +0000 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: Latest Git kernel: avahi-daemon[2410]: ioctl(): Inappropriate ioctl for device To: Christian Zigotzky Cc: Michael Ellerman , Jakub Kicinski , Christophe Leroy , DTML , Darren Stevens , Linux Kernel Mailing List , linuxppc-dev@ozlabs.org, "contact@a-eon.com" , "R.T.Dickinson" , Christoph Hellwig , mad skateman , "netdev@vger.kernel.org" , Christian Zigotzky Content-Type: text/plain; charset="UTF-8" X-Provags-ID: V03:K1:v2NzRURWLNpNd5Vze0NOfOG4ZOZI6pKd6oWf7SO7mXuEZ0uoq11 KIi7GIY9VO6IemzyHMrVkk3L/+sEJALYga7ggOoqu41gIyuPangzZ85ag2fGOYOLXfj/V3B KM6ZABN5SojVwgP5IyTRC4koA0GQgVTFfleZnoZsj4VbZZ7kh94akKt2pa29f1yTbXEs452 +cxQF9hCDz6ciVAl4ia9Q== X-UI-Out-Filterresults: notjunk:1;V03:K0:16TBwXtvMN0=:qj5wbBvyRHNYDWfCZ3BwpA qStdA9EFKDLUeL/ZGWvDz3mniWDrTvEBPhJtQeL4qy4I94TEOIYFuC2MVyZkVHqYLw7u78Cqt oUIM/FNGMD7OMxizSxJpRCUebYacCpHVdGA/ZDCoUZIji0ijFQj2FiHsKIqKAoJFuVAOVZwX1 ukZ1z2S9FWHJxzOfTgBOLWdgkNIiTjLRqTJi+ofrTBaEghh2ApLBgT3ro2aU21Nw8/6jMJ5nr AKAdr29Mk8Pu5FWZYUUvSKHgyhcTknjtn+LzUv6TiCYA96rm7vn+yofxCZFK51BQ85SAWObdx WggGIUnZYkcJWmRvZcMA7zeuWgqBfsLV+0dAgJtz+ls6WBtQkOxT/MGksnJJ1u1OMi4wa4+cY DN2gjHIX0uHWJ/Aw16Hi3BhMLwp2vpFyKxJ4tUdGWC3I5xR0AR3HZ0DcUnBabmiHCpw8Qj+9A 3Epyj6TjxJKbvGvnrJKH84SW/12CgsyKsMi50gP2+2x4bFSXtFuRQmm/sm+om5wBxGn/bxSUc q0tCu5ptcBcD6M+tq3H2UiFb+9FvrYnDEJNVltp533eKm+NrR4CuuryA51DzWu/wW1o2TFzoG 05GEfPMRwlR5yFfgZ/4CNIeN0wOueVJZIu2K1mQXq8oUZ1gt5bobybPl05+abGodTrqZRYUW7 yB97MwPfdj6GA82JJ8jETSqnFeMvY6zk8HCcKjz+Nyl3y67qTgJg/hwx6Z3PNcGgV9MGdI/cD CzvbKtaDGXpKZBx7iAQxr5wasH69V0xCge4Zn/fexNjse+iD38J+9CcWuTYX/pN08DLBtSdsc EJtiJltwArGHWfypdLLs2zJolInjMeNS+sq6kivFpOn4tbiPdw= Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Fri, Feb 7, 2020 at 3:34 PM Christian Zigotzky wrote: > > Hello Arnd, > > We regularly compile and test Linux kernels every day during the merge > window. Since Thursday last week we have very high CPU usage because of > the avahi daemon on our desktop Linux systems (Ubuntu, Debian etc). The > avahi daemon produces a lot of the following log message. This generates > high CPU usage. > > Error message: avahi-daemon[2410]: ioctl(): Inappropriate ioctl for device > > strace /usr/sbin/avahi-daemon: > Thanks a lot for the detailed analysis, with this I immediately saw what went wrong in my original commit and I sent you a fix. Please test to ensure that this correctly addresses the problem. Arnd