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[2620:137:e000::1:20]) by mx.google.com with ESMTP id dm2-20020a170907948200b0072f4445483fsi10331068ejc.906.2022.07.20.11.35.30; Wed, 20 Jul 2022 11:35:55 -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=@gmail.com header.s=20210112 header.b=oOtz9PsB; 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=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236771AbiGTSFM (ORCPT + 99 others); Wed, 20 Jul 2022 14:05:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56486 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236682AbiGTSFJ (ORCPT ); Wed, 20 Jul 2022 14:05:09 -0400 Received: from mail-pj1-x102d.google.com (mail-pj1-x102d.google.com [IPv6:2607:f8b0:4864:20::102d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F24D4B33; Wed, 20 Jul 2022 11:05:05 -0700 (PDT) Received: by mail-pj1-x102d.google.com with SMTP id l14-20020a17090a72ce00b001f20ed3c55dso3016381pjk.5; Wed, 20 Jul 2022 11:05:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=YWTDneNY8P5vWW2QTCkwFAjSMu7YWo8lKAMC6oCSaaQ=; b=oOtz9PsBinTflz88HKUTWrJh15Cle1xn8l7q18DcwWR4RAQQoC1u4AiUoWdbGWqesa 62bNh9C6BftUhOKODBoCr/KkXyz9BeZkLIw7iOlBiHkRUzEkts542clfCFazWIHo4cq0 eDo8cdN3gyi3x8DSn8uwPy8crW/bairzY9qvpP1bGcHdIRL3aZDrk1yg6qvDA0Fj3JXp d+kdlb5JmQ5RnOGq+xgkxrpa3j8vmneroyZgjaE1LRiW+aaunRjbo4eu6y4pcpz/qLkD KzylACtgOLbHjyysmtuUB5LfKCwwCQRhvLzvpaL/68Yzm7dnzisw3BClyDoYi0lcYzLa MPag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to; bh=YWTDneNY8P5vWW2QTCkwFAjSMu7YWo8lKAMC6oCSaaQ=; b=3nkKKYJVnmM4K7eS9oHBWT55CQe5RtIWN0Vpjx53K6TvLma59pSU8W+jvtygkn1KVT bqai3ORJRd8k0auX/VjYE66vqbODswUoZBE1kSyiPNLxVs0NkHQRHy+pmvOc/s/j3/82 iVQbeHWdtACHIQw4PAf001+b58S31GRsqrLC/h8MJJ78IkmbzsaMY6Y1mtAXOVIAVTMM LgeHwXw+JW+36B/4zthG5Cvl6cA0kqjjcUCuhRmGhJgn1t3F75f/cxjP85tW10w/uM0W e8FlgkR1hltQ3IhbZ26BnRZeWGrHhd+ZareevDvlVXp7AbqKsvsqbKHZMODap+P5/EPh TOJQ== X-Gm-Message-State: AJIora8BgsDAH8CfmTTNJQWR5iEk9iDL4VJkCY238x9EymZy3R3QyTvu uXSafFPfKwA8RZcqHBfr6GI= X-Received: by 2002:a17:90b:2243:b0:1f0:b0a:e40c with SMTP id hk3-20020a17090b224300b001f00b0ae40cmr7053364pjb.76.1658340305346; Wed, 20 Jul 2022 11:05:05 -0700 (PDT) Received: from localhost ([2620:10d:c090:400::5:f3dd]) by smtp.gmail.com with ESMTPSA id r18-20020a632b12000000b00415d873b7a2sm12030959pgr.11.2022.07.20.11.05.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Jul 2022 11:05:04 -0700 (PDT) Sender: Tejun Heo Date: Wed, 20 Jul 2022 08:05:03 -1000 From: Tejun Heo To: Mukesh Ojha Cc: Imran Khan , lizefan.x@bytedance.com, hannes@cmpxchg.org, tglx@linutronix.de, steven.price@arm.com, peterz@infradead.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: Query regarding deadlock involving cgroup_threadgroup_rwsem and cpu_hotplug_lock Message-ID: References: <8245b710-8acb-d8e6-7045-99a5f71dad4e@oracle.com> <26d0e4cc-be0e-2c12-6174-dfbb1edb1ed6@oracle.com> <224b19f3-912d-b858-7af4-185b8e55bc66@quicinc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <224b19f3-912d-b858-7af4-185b8e55bc66@quicinc.com> X-Spam-Status: No, score=-1.5 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_EF,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE, SPF_PASS autolearn=no 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 Wed, Jul 20, 2022 at 05:31:51PM +0530, Mukesh Ojha wrote: > Looks like these patches are the fixes. > > https://lore.kernel.org/all/YtDvN0wJ6CKaEPN8@slm.duckdns.org/#r > > Would let Tejun confirm this . Yeah, looks like the same issue. I'll write up a patch later this week / early next unless someone beats me to it. Thanks. -- tejun