From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757620AbdLRG7T (ORCPT ); Mon, 18 Dec 2017 01:59:19 -0500 Received: from mail-wm0-f68.google.com ([74.125.82.68]:32902 "EHLO mail-wm0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750805AbdLRG7S (ORCPT ); Mon, 18 Dec 2017 01:59:18 -0500 X-Google-Smtp-Source: ACJfBoujrRz77IqX3t+T3tW713P5W0huXsyeJflASZXPCmicO1ZKyG+P8pc30L8eLJLumyz+U2T68A== Subject: Re: [PATCH 1/2] x86/stacktrace: do not fail when regs on stack for ORC To: Josh Poimboeuf Cc: mingo@redhat.com, linux-kernel@vger.kernel.org, Thomas Gleixner , "H. Peter Anvin" , x86@kernel.org, Miroslav Benes References: <20171130080325.24785-1-jslaby@suse.cz> <20171130195710.cu2lsa47kwnow2hi@treble> <73526a6b-5083-78f1-8f76-d5f3ac52f958@suse.cz> <20171218033749.ihpwkjh7qfnilj4s@treble> From: Jiri Slaby Message-ID: <0dc9045b-c516-4c6e-23ab-de65c37f7a74@suse.cz> Date: Mon, 18 Dec 2017 07:59:15 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 MIME-Version: 1.0 In-Reply-To: <20171218033749.ihpwkjh7qfnilj4s@treble> Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/18/2017, 04:37 AM, Josh Poimboeuf wrote: > On Thu, Dec 14, 2017 at 10:58:35PM +0100, Jiri Slaby wrote: >>> return -EINVAL; >> >> Kthreads and idle tasks hit this error as they have no user regs on the >> stack obviously :). > > Doh, sorry, I forgot about that. FWIW and to be complete, as Mira Benes pointed out in some other thread, also zombies/dead tasks belong here which have emptied stack. thanks, -- js suse labs