Received: by 2002:a25:ad19:0:0:0:0:0 with SMTP id y25csp1964491ybi; Thu, 18 Jul 2019 01:08:55 -0700 (PDT) X-Google-Smtp-Source: APXvYqwRBnSY1yX46PPH15I99gmmCh+rFCAS6GBwUA1NnFgKpN8oNvMSTN6S0zxn1pBmhDZnpHhW X-Received: by 2002:a63:e213:: with SMTP id q19mr45726079pgh.180.1563437335397; Thu, 18 Jul 2019 01:08:55 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1563437335; cv=none; d=google.com; s=arc-20160816; b=X30I9uL4ppY+LhHIeCXH4rtySGzbIda6jmbroo3YbERjldVnJcGbU0IQI0D8JXpAiw Q+dXrYsmv/lGJg2hV+Et+HFxEZMSGqp+jdB+H0f9gCyWoA4Fa4lXV33iaA5SFzdmmyEh wkiXHc5BFJ8aKNy5tNSQbx5UxmVY0Bl+Ig3WlgFa1DbJglK1vom85LSoGAGzh9sGEAmF UlSQKYziy85e3QLYD9IgsN7vZOWpgJO3AHI/sVCBqZYjR/em2rssfI+pgbV0o/KBu4l2 xI6LSK7w0YE1KadlXsSCn8r6RSHqZoXenRVaMZezknFgPbhDSQb+R8lPUvtujzKpg8j/ eGxQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:user-agent:references :message-id:in-reply-to:subject:cc:to:from:date; bh=oDEThTvFULUiWf8J0AhUoyJxftweESOn4J9N1Iq3iPA=; b=0YyqiEkMu3M1kqZ7yzxVimH371EfRJhVh2HmC8hElKJGISzq+zr7tCQvdKPT38GdFl Oi+W7dS8M1JgnajPcs3q1LpKrIZqDQieeiGBNqGEwQ92+yNmy2jVxqRfgz4CSiH33exA kp7v5eZyjdbSRntAeG6DXkg4w9Cwos5QZh+n4ZcDoSEaBxqwNbQJRx6t0npgviXfOAyJ HjDFFoyUGLd1WvGVOPh05dCImaeOi8Y0qs6Nsj+34mN2sqUsP4HEkVQL4mrDK6ByaAwN 5pVjwbUbT1d7Ose/W62LQ+jlAmci7h9BwCE1CCrjccsmiU5ZSodzk5+unWhesI5rVk0e hIRQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id j74si1331332pje.12.2019.07.18.01.08.39; Thu, 18 Jul 2019 01:08:55 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726735AbfGRIIN (ORCPT + 99 others); Thu, 18 Jul 2019 04:08:13 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:56515 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726000AbfGRIIM (ORCPT ); Thu, 18 Jul 2019 04:08:12 -0400 Received: from pd9ef1cb8.dip0.t-ipconnect.de ([217.239.28.184] helo=nanos) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1ho1SK-00031f-H5; Thu, 18 Jul 2019 10:08:00 +0200 Date: Thu, 18 Jul 2019 10:07:58 +0200 (CEST) From: Thomas Gleixner To: luferry cc: "Peter Zijlstra (Intel)" , Rik van Riel , Greg Kroah-Hartman , Josh Poimboeuf , linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] smp: avoid generic_exec_single cause system lockup In-Reply-To: <20190718080308.48381-1-luferry@163.com> Message-ID: References: <20190718080308.48381-1-luferry@163.com> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 18 Jul 2019, luferry@163.com wrote: > From: luferry > > The race can reproduced by sending wait enabled IPI in softirq/irq env Which code path is doing that? Thanks, tglx