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=-4.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 835E1C433E4 for ; Tue, 28 Jul 2020 02:32:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3AE6920775 for ; Tue, 28 Jul 2020 02:32:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ellerman.id.au header.i=@ellerman.id.au header.b="pjVPeiiB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726942AbgG1Cck (ORCPT ); Mon, 27 Jul 2020 22:32:40 -0400 Received: from bilbo.ozlabs.org ([203.11.71.1]:45771 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726541AbgG1Ccj (ORCPT ); Mon, 27 Jul 2020 22:32:39 -0400 Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4BG1115sGBz9sTj; Tue, 28 Jul 2020 12:32:37 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ellerman.id.au; s=201909; t=1595903558; bh=GVppKHacNBK9byV2AhBgk8LPoELuuI3KrLw/+QEzQ/Y=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=pjVPeiiBTIagXa4E93EO9ZTHN2JESxXsOXdz5cEZY3SxtPrEkItcko61k/i3vbklZ CawiMR+OssdGfPNCK+IbvIsAiMY4fr4Eet+dGsELz/2XviC4InQZlCn7rKEeH0FJE0 /kptzj1ZdRjUUSHI0cFYR8/1UqEmRiF8qboxXJVaLYKpcqIXcyOVF2D3guVk0S60md cjsMTtnvZuZ+rA5gUbJJ3V1bh2hFf+6iIMl0CoXmPmagfMU7Tkaf98lwV4DJ84SfNv jUeExm8DqOLXZbGLafozLXfJfaEAtm+phntYLJJscW6Hsmhl3qe3zvzjSonY3805ak vpFxI8xE5875A== From: Michael Ellerman To: Daniel Axtens , linuxppc-dev@ozlabs.org Cc: linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 4/5] powerpc/mm: Remove custom stack expansion checking In-Reply-To: <87tuxtrrvb.fsf@dja-thinkpad.axtens.net> References: <20200724092528.1578671-1-mpe@ellerman.id.au> <20200724092528.1578671-4-mpe@ellerman.id.au> <87tuxtrrvb.fsf@dja-thinkpad.axtens.net> Date: Tue, 28 Jul 2020 12:32:33 +1000 Message-ID: <87eeow74ji.fsf@mpe.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Daniel Axtens writes: > Hi Michael, > > I tested v1 of this. I ran the test from the bug with a range of stack > sizes, in a loop, for several hours and didn't see any crashes/signal > delivery failures. > > I retested v2 for a few minutes just to be sure, and I ran stress-ng's > stack, stackmmap and bad-altstack stressors to make sure no obvious > kernel bugs were exposed. Nothing crashed. > > All tests done on a P8 LE guest under KVM. > > On that basis: > > Tested-by: Daniel Axtens Thanks. Always nice to have someone review my patches! cheers