Received: by 2002:a25:ca44:0:0:0:0:0 with SMTP id a65csp174650ybg; Mon, 27 Jul 2020 19:33:37 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwLkvpVd1RjvLw8twDnjPoucuV8MGgzkuOEPvYmUSYrAsArPtIWiYRy92WZAq4SgDQxhzcg X-Received: by 2002:a05:6402:1b1c:: with SMTP id by28mr24039584edb.270.1595903617745; Mon, 27 Jul 2020 19:33:37 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1595903617; cv=none; d=google.com; s=arc-20160816; b=mq83PofOJ6WG6T4UZlyJ2j7pbFMxaKC3I2oCr6fjs0tQwb7Em2Dn5eVpvDKHwaC5/q JqJ05B4JlNCrW0qBOqZ2yK2wizIy2pu8uLfS9EERWgFZ68MajqHk621nZViGLV4zQ7y9 uIe2JYOvq4E0QbCpX0zydZgeQu36edNMZnZ96ACajoz2j61gV31nxyTQYBC4ukIo16A1 4adU9WqYyQGbgXZ/O0k5XcscvjhHwbTxQFDToCcVQvnALeWVh1I6tP5vbmvOpl/cDwqR nuE9Gd7GznyVMlNmpd/pf7S98NbjjGCVqSHBrxc9vJX6sm37yUUackrlnloLPxVYJl9Z Kn5A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:message-id:date:references :in-reply-to:subject:cc:to:from:dkim-signature; bh=GVppKHacNBK9byV2AhBgk8LPoELuuI3KrLw/+QEzQ/Y=; b=mTLaDFa9M3b0Y71RTCyhnX0oFv8YL4icdxyRMP0eVUAF576UoAs8k8WDRVPUpa0lFd 9PlhLJr/+7TEo68PUOM8/fJia/s8xyBqR+MUvOewKm9V2hM7KF9efQ1LNRzD8+gH3LvF xcjIkNo0PC1bnHaqpEzElNkfqfvmuR+QJLbSz+pEcYuDR9g7oRlFCt4rWT9vIpzN6aor 4E9v2/tOKlbTpJzug1AFms7ewv/VIbWM0OtWJ62JBLekrT+KMrzmyvVBQ6IbD23sZndu 88WaLfvJZJiWI61SD8ChQRWQye2qp58wLaYET/aHrwfBAeDKgduD607Kzle5lcAMw1/Q XSZQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ellerman.id.au header.s=201909 header.b=pjVPeiiB; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id mb9si3264628ejb.536.2020.07.27.19.33.15; Mon, 27 Jul 2020 19:33:37 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@ellerman.id.au header.s=201909 header.b=pjVPeiiB; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726899AbgG1Cck (ORCPT + 99 others); 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