Received: by 2002:a05:6a10:206:0:0:0:0 with SMTP id 6csp1331406pxj; Fri, 21 May 2021 11:29:33 -0700 (PDT) X-Google-Smtp-Source: ABdhPJw786BU0RVzZ9wms2oFYctcpOe+Nt8XT3z2RTmnTJPMu07N6XuSGvMVnvVmyAI2iWNpqzjC X-Received: by 2002:a05:6402:2793:: with SMTP id b19mr12315617ede.191.1621621773361; Fri, 21 May 2021 11:29:33 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1621621773; cv=none; d=google.com; s=arc-20160816; b=NHq93BSq3M+fYoFaKJIX9iq0oKU1O89NCSFEBlbHFMA4uMveLobgGMCv03IBw3l9wE ywL9dkgE9oQnLBHW5LPPuY4gDQoXkdjQ8cYhe5fneqQm0unMRpu3jErWqe8dlk6OTfdQ +GMO34qT/05T0lRp9630JtBqOPv2q4GfuEhRI6C5o6fZagZDHLYhuLvLgc9AB+LUq1lE Mhgh+rYBSZj0PY0TZD1By1IwPeIRceLJ1pU6Rb6oVZhEaYmY/ON8zBpEjNW1TFn0jYBH vIkGsvzuBgl30xGplILq/ftcc92JeuEES4fPKRP5Kj2PTR6ErKt8/oCATRxefhKZBPp5 1shg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=Jp4zlznkpFx9tdWxRUV7M5qNhT0kZeoN0+qL2xikpYg=; b=c9fc6nisYKaaQ7TYKncQQEXJVQKaI9JtUI5QOYAfLURiWvUSzqjh8Axv2Fj4M933MS Zp8+xYESUM+nSYWsNADM7NykKkbvs3/jsjEL87AE1ojY0ET+2jHD5UbVjZCVXIuE/aun fF/j7ntuFuY9Cse9WeBy76nKEXPSoYobd6kd0rMjrZmZCgc2NNemekP/dBDQH6faaxxO ErfhxevavCDCiUk5R/GbKIKDuUnb9clXxFUOb8H4LR8mSzb8q9CPl+efLDe0MKjwiwPj c+Og57iWf3IboICXW9EhiUNUdmUpKgxqIhnBhvSifchYdR4HBdTy8T/eDnA7b4kHYXKu SdvQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@suse.com header.s=susede1 header.b=tUDSC0ac; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=suse.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id r17si5922834edd.427.2021.05.21.11.29.05; Fri, 21 May 2021 11:29:33 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@suse.com header.s=susede1 header.b=tUDSC0ac; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=suse.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235523AbhEUHOA (ORCPT + 99 others); Fri, 21 May 2021 03:14:00 -0400 Received: from mx2.suse.de ([195.135.220.15]:46274 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235561AbhEUHN4 (ORCPT ); Fri, 21 May 2021 03:13:56 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1621581150; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=Jp4zlznkpFx9tdWxRUV7M5qNhT0kZeoN0+qL2xikpYg=; b=tUDSC0acfymWbFBzvducaP0wBVLZV872XvCF1zTWwODsy2jEiNXR0Wct16zY9MAR/cPA5E ZnnPP/g09GFGnQKDlw9ml/F5DzOVHFiiVXUfEv6QZ17S3+DHJ5y7Hg6zoCcUedvqbLpfSS HWoQiMICrUiF5LgomVsUqQ1aIOO1Mag= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 734F1AC1A; Fri, 21 May 2021 07:12:30 +0000 (UTC) Date: Fri, 21 May 2021 09:12:30 +0200 From: Petr Mladek To: Andrew Morton Cc: Martin Liu , Nathan Chancellor , Nick Desaulniers , Tejun Heo , minchan@google.com, www@google.com, davidchao@google.com, jenhaochen@google.com, linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com Subject: Re: [PATCH] kthread: Fix kthread_mod_delayed_work vs kthread_cancel_delayed_work_sync race Message-ID: References: <20210513065458.941403-1-liumartin@google.com> <20210520144845.52755f3af700a902e07e2ee7@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210520144845.52755f3af700a902e07e2ee7@linux-foundation.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu 2021-05-20 14:48:45, Andrew Morton wrote: > On Thu, 13 May 2021 14:54:57 +0800 Martin Liu wrote: > > > We encountered a system hang issue while doing the tests. The callstack > > is as following > > > > ... > > > > Fixes: 37be45d49dec2 ("kthread: allow to cancel kthread work") > > Thanks. I added a cc:stable to this and shall hold it in -mm for a > couple of weeks to get exposure and testing before sending it to Linus > for 5.13. Sounds good to me. Thanks for taking care of it. Best Regards, Petr