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[2620:137:e000::1:20]) by mx.google.com with ESMTP id s2-20020a1709060c0200b00781a47397b1si2166337ejf.502.2022.11.21.07.56.54; Mon, 21 Nov 2022 07:57:17 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231311AbiKUPqV (ORCPT + 91 others); Mon, 21 Nov 2022 10:46:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45004 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232140AbiKUPqG (ORCPT ); Mon, 21 Nov 2022 10:46:06 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 12B6A5656C; Mon, 21 Nov 2022 07:45:53 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id A4D516129B; Mon, 21 Nov 2022 15:45:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 29E07C433C1; Mon, 21 Nov 2022 15:45:50 +0000 (UTC) Date: Mon, 21 Nov 2022 10:45:48 -0500 From: Steven Rostedt To: Alexei Starovoitov Cc: KP Singh , Chris Mason , Mark Rutland , Florent Revest , bpf , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Brendan Jackman , markowsky@google.com, Masami Hiramatsu , Xu Kuohai , LKML , Greg Kroah-Hartman , Linus Torvalds , Christoph Hellwig , Peter Zijlstra Subject: Re: [RFC 0/1] BPF tracing for arm64 using fprobe Message-ID: <20221121104548.4a7aa3de@gandalf.local.home> In-Reply-To: References: <20221108220651.24492-1-revest@chromium.org> <20221117121617.4e1529d3@gandalf.local.home> <20221117174030.0170cd36@gandalf.local.home> <20221118114519.2711d890@gandalf.local.home> <43d5d1f5-c01d-c0db-b421-386331c2b8c1@meta.com> <20221118130608.5ba89bd8@gandalf.local.home> <2ab2b854-723a-5f15-8c18-0b5730d1b535@meta.com> <20221121101537.674f5aca@gandalf.local.home> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-6.7 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_HI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 21 Nov 2022 07:40:11 -0800 Alexei Starovoitov wrote: > > > > As kprobes are set in most production environments, so is error injection. > > Do we really want error injection enabled on production environments? > > We absolutely want it enabled in production. > > > I don't. > > Speak for yourself, because your employer thinks otherwise. And speak for yourself! Just because you want it in production, does not mean that everyone else is forced to do so too. It's a DEBUG feature. It's in Kconfig.debug. Why is it enabled by default??? -- Steve