Received: by 2002:a05:6358:d09b:b0:dc:cd0c:909e with SMTP id jc27csp873125rwb; Thu, 1 Dec 2022 09:21:29 -0800 (PST) X-Google-Smtp-Source: AA0mqf5PGuKfZ+DdQYMijRns6pgdEOUwDMxZwK7c7KNTs8hAeiAVgap1JPZCt019RZwR3LOBAzdg X-Received: by 2002:a17:906:745:b0:7bd:f50f:a51c with SMTP id z5-20020a170906074500b007bdf50fa51cmr22882424ejb.285.1669915289086; Thu, 01 Dec 2022 09:21:29 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1669915289; cv=none; d=google.com; s=arc-20160816; b=qYQ0PMLRT8zy1YzgKM7hn9AumGY1WIlEtvBo/HdmT0bk1ywMX4FpXJSc0H8S751fv/ kkCm9iSGDXyZIbee2EajBR2I2LVMpIjLZO1m0J5KTJsUCc0pqwQWvdVvRnXlYTCwkK05 WCc9JwN+yeNuanOGSESKo5boH+by7ucWl66P1Ut+A/UwcwrGlW2UqVmCYf6f50h/8NpE AF3OgFy2lTk4X+9z5GI4ILgbh7ywHnBm7nWlq/pUJP7chaKFsmb0Y2PP9UoH28kQbQ3o k46dj+H8lVDLubUv1zAvD3S4j1PhUgulZMCkHsFcfsWr+IWvltj9DYTQBbu/qAqDMVGH lwbQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:subject:cc:to:from:date; bh=doBeMjjl7cbEKMRQDiLfCQAzfdesmielGTlGvfvvoRM=; b=mnRwqi0QMsAA6vI84HfcvMk53NnS3AYOBFgNk/Z2dDxYYW6dIgmhidKa2UJTpoUJn6 cGmKX5b5Jkz19sy0eDYp6RPZFPzQ0quT2juGDarg6MPXxzTD7j6LJD+rgjkL3NI4JL8h QpqKj4VtZ8mEYr0cGHYaRjIvYRM5JG187sjS97Lk8H3xj34cUSpVqLqspm+yJ+tnCVEL gUrjGo7eOSBGvZJpu7M4WgLEElvBkd4eG61ikMIsJUBVRbHbflMFvOg+C1ZUJZGm5VYv occJUyYjFsr0dhR9p2zpYS0aOenmtB7xAaEF4FLC66hq9n1AQ+NgMbs8TM3npYMlSIVX Zi4Q== ARC-Authentication-Results: i=1; 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 Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id oz34-20020a1709077da200b007adb3888afbsi4412843ejc.136.2022.12.01.09.21.06; Thu, 01 Dec 2022 09:21:29 -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 S231540AbiLAQlE (ORCPT + 82 others); Thu, 1 Dec 2022 11:41:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57984 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231826AbiLAQks (ORCPT ); Thu, 1 Dec 2022 11:40:48 -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 19545BBBE2 for ; Thu, 1 Dec 2022 08:40:47 -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 A7CC16207C for ; Thu, 1 Dec 2022 16:40:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 719A0C433C1; Thu, 1 Dec 2022 16:40:44 +0000 (UTC) Date: Thu, 1 Dec 2022 11:40:41 -0500 From: Steven Rostedt To: "Masami Hiramatsu (Google)" Cc: LKML , Borislav Petkov , Alexei Starovoitov , Linus Torvalds , Andrew Morton , Peter Zijlstra , Kees Cook , Josh Poimboeuf , KP Singh , Mark Rutland , Florent Revest , Greg Kroah-Hartman , Christoph Hellwig , Chris Mason Subject: Re: [RFC PATCH] panic: Add new taint flag for fault injection Message-ID: <20221201114041.7eb410b1@gandalf.local.home> In-Reply-To: <166991263326.311919.16890937584677289681.stgit@devnote3> References: <20221201234121.8925fdf83115747ac4ac116a@kernel.org> <166991263326.311919.16890937584677289681.stgit@devnote3> 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 Fri, 2 Dec 2022 01:37:13 +0900 "Masami Hiramatsu (Google)" wrote: > From: Masami Hiramatsu (Google) > > Since the function error injection framework in the fault injection > subsystem can change the function code flow forcibly, it may cause > unexpected behavior (but that is the purpose of this feature). > To identify this in the kernel oops message, add a new taint flag > for this, and set it if it is (and similar things in BPF) used. > > Signed-off-by: Masami Hiramatsu (Google) > Acked-by: Steven Rostedt (Google) -- Steve