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=-0.8 required=3.0 tests=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 BCFC4C54E49 for ; Thu, 7 May 2020 23:07:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 94C16208D6 for ; Thu, 7 May 2020 23:07:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lca.pw header.i=@lca.pw header.b="irn2+fcr" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727853AbgEGXH0 (ORCPT ); Thu, 7 May 2020 19:07:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45246 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1727823AbgEGXHW (ORCPT ); Thu, 7 May 2020 19:07:22 -0400 Received: from mail-qt1-x842.google.com (mail-qt1-x842.google.com [IPv6:2607:f8b0:4864:20::842]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AED07C05BD09 for ; Thu, 7 May 2020 16:07:22 -0700 (PDT) Received: by mail-qt1-x842.google.com with SMTP id b1so552746qtt.1 for ; Thu, 07 May 2020 16:07:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lca.pw; s=google; h=content-transfer-encoding:from:mime-version:subject:date:message-id :references:cc:in-reply-to:to; bh=cDgv5RBBNmmZoeVkSdRHbb+p5n1j6gbGkVNuskYknK8=; b=irn2+fcrxp6NonlZzAmEkP+IcmaZPlVzbzxmfCG6lVabw4/G0dFt3sq6PNTCVMGxGG mHrxFYOqL919h6uaxEl0JW7dIaw8NB10ABm7DPmqf/EhfuWGsilf0Zdh4cihFDxim+Mo 2oiV63mSEiHMYHoenvD/gjwZA2LAweN8EWw+tYVdcFwe7a8XKwwE9AkeASQmt+OrM6Ud 66rqMK51DOb0gUzTcrOl8r0cDm0oT8FMB5ERjpMlkKlVh00sAuv1oGi7o++rQCXNEyy3 NK/+1D+NyYl6NPUHDAAe/3i2dWdBxPkf5biMBOG9YHzAaT3acw0lJR7KTsOkpXlpkwHt Jr4Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:content-transfer-encoding:from:mime-version :subject:date:message-id:references:cc:in-reply-to:to; bh=cDgv5RBBNmmZoeVkSdRHbb+p5n1j6gbGkVNuskYknK8=; b=I35EUaAX+xZWjSUgXUk6dIdpNLDbVY3eEIg60EIM2PoZrv1qau4aIv0nOeZo4dWS2B cT1QQWofcojfCysZJQECMClcnzIVcj7B2ZQsTJuln6bJSvl/5y/75BRe1biijMTtPLnG /UMbBLbn6u4gnhlsFOvwWx9SnWB+yTJG5JO8kKVk7RYOuxxcPte927kNTTvBGeKuxaNt jifHqJEnANk+hV++7mA/QgAQgyfrdm+kmlkei0tPjU+8e6ACK5cNuWORppVBa784LhDr ZrH5q81KUe5f/oUmwbfpzbSuYEV/ScNwysG6WqGMbhg6uQI2Y2S+768lpRTQbiEMziDK H1kw== X-Gm-Message-State: AGi0PuZORUrR00iZmEFspNBG5hVA8JxxQStHGAzGtYH5LrN39GiTkzUp CIv8OTjfa4ORC6Eihu/QbEfsnw== X-Google-Smtp-Source: APiQypJ8nv0rS/6ipD0+tlnjwjtkoEW9gBSgFlE4m3C077d6wO4jOE6P+FabQVeufE8QHwU+D1XMog== X-Received: by 2002:ac8:46c9:: with SMTP id h9mr16757891qto.128.1588892841789; Thu, 07 May 2020 16:07:21 -0700 (PDT) Received: from [192.168.1.183] (pool-71-184-117-43.bstnma.fios.verizon.net. [71.184.117.43]) by smtp.gmail.com with ESMTPSA id b126sm5170080qkc.119.2020.05.07.16.07.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 07 May 2020 16:07:21 -0700 (PDT) Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable From: Qian Cai Mime-Version: 1.0 (1.0) Subject: Re: [PATCH] kernel: add panic_on_taint Date: Thu, 7 May 2020 19:07:20 -0400 Message-Id: <6B423101-ACF4-49A3-AD53-ACBF87F1ABE0@lca.pw> References: <20200507221503.GL205881@optiplex-lnx> Cc: Andrew Morton , LKML , linux-doc@vger.kernel.org, kexec@lists.infradead.org, linux-fsdevel@vger.kernel.org, dyoung@redhat.com, Baoquan He , Jonathan Corbet , Luis Chamberlain , Kees Cook In-Reply-To: <20200507221503.GL205881@optiplex-lnx> To: Rafael Aquini X-Mailer: iPhone Mail (17D50) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > On May 7, 2020, at 6:15 PM, Rafael Aquini wrote: >=20 > It's a reasonable and self-contained feature that we have a valid use for.= =20 > I honestly fail to see it causing that amount of annoyance as you are=20 > suggesting here. It is not a big trouble yet, but keeping an obsolete patch that not very str= aightforward to figure out that it will be superseded by the panic_on_taint p= atch will only cause more confusion the longer it has stayed in linux-next. The thing is that even if you can=E2=80=99t get this panic_on_taint (the sup= erior solution) patch accepted for some reasons, someone else could still wo= rk on it until it get merged. Thus, I failed to see any possibility we will go back to the inferior soluti= on (mm-slub-add-panic_on_error-to-the-debug-facilities.patch) by all means.=