From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D5956C433DF for ; Tue, 9 Jun 2020 20:51:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 953AE20734 for ; Tue, 9 Jun 2020 20:51:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726976AbgFIUvg (ORCPT ); Tue, 9 Jun 2020 16:51:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41348 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726909AbgFIUvf (ORCPT ); Tue, 9 Jun 2020 16:51:35 -0400 Received: from Galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E7234C05BD1E for ; Tue, 9 Jun 2020 13:51:34 -0700 (PDT) Received: from p5de0bf0b.dip0.t-ipconnect.de ([93.224.191.11] helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1jilCt-0001E2-Ga; Tue, 09 Jun 2020 22:50:51 +0200 Received: by nanos.tec.linutronix.de (Postfix, from userid 1000) id E50D510154A; Tue, 9 Jun 2020 22:50:50 +0200 (CEST) From: Thomas Gleixner To: Qian Cai Cc: Peter Zijlstra , LKML , Andy Lutomirski , Andrew Cooper , X86 ML , "Paul E. McKenney" , Alexandre Chartre , Frederic Weisbecker , Paolo Bonzini , Sean Christopherson , Masami Hiramatsu , Petr Mladek , Steven Rostedt , Joel Fernandes , Boris Ostrovsky , Juergen Gross , Brian Gerst , Mathieu Desnoyers , Josh Poimboeuf , Will Deacon , Tom Lendacky , Wei Liu , Michael Kelley , Jason Chen CJ , Zhao Yakui , Alexander Potapenko Subject: Re: [patch V9 10/39] x86/entry: Provide helpers for execute on irqstack In-Reply-To: <87zh9cnfmg.fsf@nanos.tec.linutronix.de> References: <87zh9cnfmg.fsf@nanos.tec.linutronix.de> Date: Tue, 09 Jun 2020 22:50:50 +0200 Message-ID: <87wo4gnetx.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain 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 Qian, Thomas Gleixner writes: >> BAD (after oom02) >> # cat /sys/kernel/debug/stackdepot/info >> Unique stacks: 140476 > > That's indeed odd. I try to reproduce and figure out what really breaks > here. I checked your config file and I think I know where this comes from. Can you plase disable KASAN just for testing purposes and compare before after again? Thanks, tglx