Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750918AbdISAXM (ORCPT ); Mon, 18 Sep 2017 20:23:12 -0400 Received: from mail-qt0-f176.google.com ([209.85.216.176]:52948 "EHLO mail-qt0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750747AbdISAXL (ORCPT ); Mon, 18 Sep 2017 20:23:11 -0400 X-Google-Smtp-Source: AOwi7QAOPrMNvFlpd5GjdJWjravKf9grhNG5IH8CUD2Hiy/AXCjWvnNOrYiEG2t5qPJYwYKKFXYH2w== Date: Mon, 18 Sep 2017 17:23:07 -0700 From: Tejun Heo To: Randy Dunlap Cc: Sriram V , linux-kernel@vger.kernel.org Subject: Re: Kernel Panic sysrq questions Message-ID: <20170919002306.GI378890@devbig577.frc2.facebook.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 589 Lines: 22 Hello, On Mon, Sep 18, 2017 at 03:35:36PM -0700, Randy Dunlap wrote: > > My Understanding is When a fatal panic happens, The Kernel is in > > frozen state (no workques > > or tasks get executed). > > > > Is my understanding correct or am i missing something here. > > Hi, > What kernel version? > > I don't see anything in the wq docs about that specific point. There's nothing workqueue specific there. Panic doesn't bring the system to a complete stop in general. If you wanna change how the system behaves post-panic, please take a look at panic= boot param. Thanks. -- tejun