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[2620:137:e000::1:20]) by mx.google.com with ESMTP id nk21-20020a17090b195500b00263a985aba5si2385872pjb.149.2023.07.07.09.10.52; Fri, 07 Jul 2023 09:11:08 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@gmx.de header.s=s31663417 header.b=WCnxCyh9; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gmx.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231245AbjGGPkC (ORCPT + 99 others); Fri, 7 Jul 2023 11:40:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37572 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229458AbjGGPkB (ORCPT ); Fri, 7 Jul 2023 11:40:01 -0400 Received: from mout.gmx.net (mout.gmx.net [212.227.15.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D6F6EB2 for ; Fri, 7 Jul 2023 08:39:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.de; s=s31663417; t=1688744379; x=1689349179; i=efault@gmx.de; bh=ylP9+ZNDPQYbfTTId9obf9+rw4X1x3mXi09x7g9dYNs=; h=X-UI-Sender-Class:Subject:From:To:Cc:Date:In-Reply-To:References; b=WCnxCyh96RU6pF7u97rwFX4JGKeRa0E5DfXpWoQZcFdXtRWaiA0Bb8Qj1CdGSLqfPqv3z3a JBa6g7Luz9IwiLBrCwLNyjyPgi5yeAp0Lp14sri1Db0zmqaw33Oa4n9PVA2g+34+B67CXhBKj jLng0AOzpzESV3hE93GecizGjK5aoIBneY/TxijCOfLlgaEWbSey1bk49yV+bn9rZwYaOZoxd g5bxmieK8rmG0cg1JqQrzlSu7yit9gra+YnIa757FDQAxUP2rjUifh+RuEtnTa885l89ZBh/o Wpafe4aB5orypm7KJPwV5s10vYgHEDtBBq1G8H0F52aaAC8aY3UQ== X-UI-Sender-Class: 724b4f7f-cbec-4199-ad4e-598c01a50d3a Received: from homer.fritz.box ([212.114.172.125]) by mail.gmx.net (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1Ml6qM-1pYogZ2Clg-00lVFm; Fri, 07 Jul 2023 17:39:39 +0200 Message-ID: Subject: Re: Fwd: Possible race in rt_mutex_adjust_prio_chain From: Mike Galbraith To: Peter Zijlstra , Henry Wu Cc: linux-kernel@vger.kernel.org, Thomas Gleixner Date: Fri, 07 Jul 2023 17:39:38 +0200 In-Reply-To: <20230707125942.GB2883469@hirez.programming.kicks-ass.net> References: <20230706120103.GJ2833176@hirez.programming.kicks-ass.net> <20230707125942.GB2883469@hirez.programming.kicks-ass.net> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.42.4 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:eCtcbb9DASdA4l/kL+LDKIXXOpXcWwsb7tG7BoHQQEREjyn0op9 CRXUUt5MidEqkmYjBtW8ZmOTfDOC5b0bMsbqqx1zFhywCZOoJNcd+P7YwdUr4V5HNC4cqAM eAR6ZzL0QnKShfYBexOVXmkcQdJ4HbZaPJxa9Uwpj5rMOpBTrhxP21ztD5N8pyupg2WTqSZ IAnRaIA3+tVnRUMp2svPg== UI-OutboundReport: notjunk:1;M01:P0:FkJjkHtWmEY=;CW4UgzIDZvlNmuHjsCWn9qNbm/c n43YHQL2ytga9NRIVzxIzz+YhNgsN+xiN954qUC2pA1CI+XphSUTwj6nM96mrf/yCIGtDWmUR Jyc5BJqw/VhlSB8KeCG9qd1oDFi5qrT3RV/RG9lWXWnHE+CjMci9J/S/fLwl3RjfiLngwk7Vh XB35lFBX+dwKWcBe0+6sm7as9BxzSUY5RVniA2ZenRUiUY6aKAtsgBgN0yFPWuh5GYZ+sf2Wj 3jwzaLX38mgL4jVfLnBbMPZyYzT1USoGRKYAdkxHPt/yu00IGJPzOv4NuZaKplWa1m/W6i/2G Ja6YW/lPAS7jVtc481pQFpiGibmS5xuCpwqNY5s1454G0UJQ9mhYjLS9wb8RUZaJWA9ckUUij Y6x8xAN6i7dSeSsBceWVzxFGcjflqNX+wYQl9VGg9KOyvexDYXB3zDG4oqEAv0WnVs5zxaJRz k4iA5hDJUG97QG39q5YaTA3IFDR9aLgfgnvkYS9+uqY73x5w/1sPP07Tuqs5g6hSYQkNaQ4c8 EV+MYHpKrpGshxnFffDpbt2AFRtra4j0wVQvtwVyAZdBiu34u1O6MFN5XQOufo5V1AXP12iZy B4Sv+zkKJfLfuA4CoTimk8C3rmmyE4j2kw56iRrsvTgGDRzfRGfQSsPs5N11Szf0D+MOCUCkE m49MxdBpKDwIVx36aCitbROze+4cU6lV6PDm4HkRD4+IoZJqP/QA3K2/a5krcM8Cu/IzF2WPS OEgfQytbBgPgeDR3MhhtLONtHnppVLL6RY08aYFcmKRjaXT45nw6AMMwMqMDMi9SOUTJ5B4s1 Iqii9nAs8PesGH0GdB6z3dXyQQYAwRQtmCzH+BRt/MvNAUIUauuOz9RV6t0LB4LMvA6KYxCE/ Qt+QpXVGfOV2LY06Hq1nZvVtaMysjwoVI6lQRNciAmbZUcwrWYoKmqn3WLFCd+TTuz3KAstSS SV1VsXUkxBbO5wBNHss7I5foFU0= X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2023-07-07 at 14:59 +0200, Peter Zijlstra wrote: > > The below implements this duplication and seems to not insta-crash. RT bits of ww_mutex.h needed tree_entry -> tree.entry. Modulo that, RT seems content. -Mike