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 36310C2BA83 for ; Fri, 7 Feb 2020 17:08:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 14114217BA for ; Fri, 7 Feb 2020 17:08:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727195AbgBGRIU (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: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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 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 ADFC1C2BA83 for ; Fri, 7 Feb 2020 17:15:14 +0000 (UTC) Received: from lists.ozlabs.org (unknown [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2B397214AF for ; Fri, 7 Feb 2020 17:15:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2B397214AF Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arndb.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 48Dhkm0vFTzDqgr for ; Sat, 8 Feb 2020 04:15:12 +1100 (AEDT) Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 48Dhhw5rnLzDqf6 for ; Sat, 8 Feb 2020 04:13:36 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=arndb.de Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) by bilbo.ozlabs.org (Postfix) with ESMTP id 48Dhhw2hcWz8shd for ; Sat, 8 Feb 2020 04:13:36 +1100 (AEDT) Received: by ozlabs.org (Postfix) id 48Dhhw2KNVz9sRl; Sat, 8 Feb 2020 04:13:36 +1100 (AEDT) Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=arndb.de (client-ip=212.227.126.187; helo=mout.kundenserver.de; envelope-from=arnd@arndb.de; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=arndb.de X-Greylist: delayed 308 seconds by postgrey-1.36 at bilbo; Sat, 08 Feb 2020 04:13:34 AEDT Received: from mout.kundenserver.de (mout.kundenserver.de [212.227.126.187]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 48Dhht5Y8Gz9sRX for ; Sat, 8 Feb 2020 04:13:34 +1100 (AEDT) Received: from mail-lj1-f172.google.com ([209.85.208.172]) by mrelayeu.kundenserver.de (mreue012 [212.227.15.129]) with ESMTPSA (Nemesis) id 1MSI6i-1j6oAt2xdQ-00SdUl for ; Fri, 07 Feb 2020 18:08:19 +0100 Received: by mail-lj1-f172.google.com with SMTP id v17so72486ljg.4 for ; Fri, 07 Feb 2020 09:08:18 -0800 (PST) X-Gm-Message-State: APjAAAVArC7TgcWNQzcud0h0/S0OvwJHUUfb9v8dz0p5hQQIZamhMT6/ mlJTishihraaVGEgGsrez++hNNW3gaS2f16Tuok= 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 Content-Type: text/plain; charset="UTF-8" X-Provags-ID: V03:K1:fdtBRiF7UB4mERUOcTVlOg7mSp4wF9WF7ALnFzXbfkPV1T6jeUR 1uQaQ+94jix1VZJcqlKP31Y9hAcTIYRLFvaTD78pEca1ZnQL5WyipDnA1pcFcPdIYjgRzRe xcUJsUxo5JnJnPX21mc9A0gPYkVlbX5eHZ6va/cGYkV2iauEsYWgzcyMPv0i4ZxCDWQzGXS LxIJs/jdHRr1+wA+NrXeQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:U5UzjEcUpo4=:dXUeruSHBIWWFuiIORVZKH gBvE4xEbbSJp9hCXsFegEYGunQwQMAOn+MVkHP0YVye/8eYJ+WpgYXOpg9SdanJR8DVlc5sJm 2yztCszcSXVuJ1sAImt3XDCkZlaq12ddhXCwu/R285oQwR90w9FDeSYhL1FAuEWQn1jqSjrPt UadaVxUj5Dk6/922dPm9vf/WlNdch4htCpkjilKQI+CivGS9EbgaqcLmXdPB44NZSCzIvWlTk 8+8Ngm+Z2DcW8toWUn4WVIsqzCYm8nIuR+lpBr9RGrrdbfA8KjLma1mWo+W6a7XbATaZACCC1 d3dK6/MKzKEWrnoGBw4dPI75XETCkWChAklGEbvW0UNRkNEFoo+bji+B9n8500w13uJ1P+tNr ymL6rOc/4VT1ldz2YoU+HwEEt4vF4N+EbkY5Jpcc1lf5fTmjKd5Mz3aN4V3XDOxU/XXPn/jc0 ginBYBDWflnNGXpo6p1U9b8B69nSXvk1wDCFSsiaYKa5I2SEKkm7qUp2blLYIh+BbOWKYIYsO Zb/kew0Azp4UnfOSmQgI4WXppSYRAdOR1Jydse4EZjy2zTZkbuPFrE2ekU3KfcuLYItcPiqmn J36xFaogQvnQNQoCgz9JOoZohsCirbeX1KbDoDhl99P3wZipAePSBlXADIwB1AN03kBX0KgWp FslCB3nFDZZ1EMtXMt756jYAgZEdYK3mvZ7ODfRYsyyZwaLjQX+RVk7L9k78mwgRWBjk8DR6q eQaaWGX9WhZjMeqwQAkQRIPST6anX8U0Cbn2+QDNMR9l1YKJ5ig7AD5QqWqQDRGMXTnhDd5LJ EWYTaDfQg6qC5XgE/14jBBUlEXovKWaHCTI7Xpe905xhw/09uk= X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: DTML , Darren Stevens , mad skateman , Linux Kernel Mailing List , linuxppc-dev@ozlabs.org, "contact@a-eon.com" , "R.T.Dickinson" , "netdev@vger.kernel.org" , Jakub Kicinski , Christoph Hellwig , Christian Zigotzky Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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