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[2620:137:e000::1:20]) by mx.google.com with ESMTP id hb44-20020a170907162c00b007269661baf2si691081ejc.475.2022.07.08.20.41.39; Fri, 08 Jul 2022 20:42:04 -0700 (PDT) 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; dkim=pass header.i=@google.com header.s=20210112 header.b=iBkxAOIe; 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; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229556AbiGIDfo (ORCPT + 99 others); Fri, 8 Jul 2022 23:35:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59776 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229513AbiGIDfl (ORCPT ); Fri, 8 Jul 2022 23:35:41 -0400 Received: from mail-wr1-x42e.google.com (mail-wr1-x42e.google.com [IPv6:2a00:1450:4864:20::42e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DA0EA7AC04 for ; Fri, 8 Jul 2022 20:35:39 -0700 (PDT) Received: by mail-wr1-x42e.google.com with SMTP id o4so630439wrh.3 for ; Fri, 08 Jul 2022 20:35:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Eey7hH9Ad5wTtBGMQlB14VhP6o1KUsyOeneAVPzdhf4=; b=iBkxAOIeZqtHJZhS282RPMkIwjnMNA7g3RsKbCP1QcM9TnGA6BqY20FNIaoBjWnCI+ lhpbimSfYe3JQIHQzmEDsQdtbJwh5KaDsZwb/IbxXICGGLu+bJls/1DoVuOeAGafwWJC cYjImOkLqTf/sto5wTZSfX8+IsVb/9FKOOOq+wLbX0g5C+DWG43w2Rhu5e1PqQ/3lJt1 XL7YzEOfThvOSKcxOr3qoAh4fecMnHE/rJ+5q7dLrUG0FRFjepsa4PLnDPERYPMDs33G Gb5Y1HXPzLKszAOqIeQECuP01O4vac4xSqHudNvEBXn8qrEq0wPyvtbQH7ZBMCrukbSH HPiA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Eey7hH9Ad5wTtBGMQlB14VhP6o1KUsyOeneAVPzdhf4=; b=nFplG3gQdw8rxTidPBT4GNonlsv31cw4vzqsR1JBzhqCRB1Z9T78qxb9C2QTLXJz+S y9e0Yb3CBfio0bqI3UF+/8uAZFV96eRpsds5qofXpumNSjMNhj/SZV9eudFhP2AE0Gy4 ZIaMCaI5PufmGrP68QoS13gFqjujOrKBKJSAjmM9fIt5PJj/v8/SBJWZZBhYjoX+Ppht uAuiWP1sJpewCL0bRmTq3Cxzd6fQ8oaUaA8DJrr5FxTWoXIhu6uveDrPNzgJi2aR3rm1 3+2crCihMFI4VyAU2TahT1XOqTs+p4LLv0AnadsZQJV628ggJWGtkD2J5kW8kwUlB4Z7 qG1Q== X-Gm-Message-State: AJIora/jFc8Il/4sxD56rlqZGIgkakA78LcOTlZvK95uKLtuxtPEJnGt gZB/GX0bQPLR+McGqUQaZ+LN6owJDbwisCFmkJHuRA== X-Received: by 2002:adf:e804:0:b0:21d:6e85:7550 with SMTP id o4-20020adfe804000000b0021d6e857550mr6400492wrm.337.1657337738375; Fri, 08 Jul 2022 20:35:38 -0700 (PDT) MIME-Version: 1.0 References: <20220708044847.531566-1-davidgow@google.com> <20220708044847.531566-3-davidgow@google.com> In-Reply-To: From: David Gow Date: Sat, 9 Jul 2022 11:35:27 +0800 Message-ID: Subject: Re: [PATCH v6 3/4] kunit: Taint the kernel when KUnit tests are run To: Shuah Khan Cc: Daniel Latypov , Andrew Morton , Brendan Higgins , "Guilherme G . Piccoli" , Sebastian Reichel , John Ogness , Joe Fradley , Luis Chamberlain , Nathan Chancellor , KUnit Development , "open list:KERNEL SELFTEST FRAMEWORK" , Andy Shevchenko , "open list:DOCUMENTATION" , Linux Kernel Mailing List , Jani Nikula , Lucas De Marchi , Aaron Tomlin , linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org, Michal Marek , Nick Desaulniers , Jonathan Corbet , Linux Kbuild mailing list , Greg KH , Masahiro Yamada , Kees Cook Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="0000000000002f36f105e357039a" X-Spam-Status: No, score=-17.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE,USER_IN_DEF_DKIM_WL,USER_IN_DEF_SPF_WL 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 --0000000000002f36f105e357039a Content-Type: text/plain; charset="UTF-8" On Sat, Jul 9, 2022 at 5:24 AM Shuah Khan wrote: > > On 7/8/22 3:22 PM, Shuah Khan wrote: > > On 7/8/22 3:00 PM, Daniel Latypov wrote: > >> On Fri, Jul 8, 2022 at 1:22 PM Shuah Khan wrote: > >>> > >>> On 7/7/22 10:48 PM, David Gow wrote: > >>>> Make KUnit trigger the new TAINT_TEST taint when any KUnit test is run. > >>>> Due to KUnit tests not being intended to run on production systems, and > >>>> potentially causing problems (or security issues like leaking kernel > >>>> addresses), the kernel's state should not be considered safe for > >>>> production use after KUnit tests are run. > >>>> > >>>> This both marks KUnit modules as test modules using MODULE_INFO() and > >>>> manually taints the kernel when tests are run (which catches builtin > >>>> tests). > >>>> > >>>> Acked-by: Luis Chamberlain > >>>> Tested-by: Daniel Latypov > >>>> Reviewed-by: Brendan Higgins > >>>> Signed-off-by: David Gow > >>>> --- > >>>> > >>>> No changes since v5: > >>>> https://lore.kernel.org/linux-kselftest/20220702040959.3232874-3-davidgow@google.com/ > >>>> > >>>> No changes since v4: > >>>> https://lore.kernel.org/linux-kselftest/20220701084744.3002019-3-davidgow@google.com/ > >>>> > >>> > >>> David, Brendan, Andrew, > >>> > >>> Just confirming the status of these patches. I applied v4 1/3 and v4 3/4 > >>> to linux-kselftest kunit for 5.20-rc1. > >>> I am seeing v5 and v6 now. Andrew applied v5 looks like. Would you like > >>> me to drop the two I applied? Do we have to refresh with v6? > >> > >> Just noting here that there'll be a merge conflict between this patch > >> (3/4) and some other patches lined up to go through the kunit tree: > >> https://patchwork.kernel.org/project/linux-kselftest/patch/20220625050838.1618469-2-davidgow@google.com/ > >> > >> Not sure how we want to handle that. > >> > > > > I can go drop the two patches and have Andrew carry the series through > > mm tree. > > > > Sorry spoke too soon. Yes there are others that might have conflicts as > Daniel pointed out: > > https://patchwork.kernel.org/project/linux-kselftest/patch/20220625050838.1618469-2-davidgow@google.com/ > > thanks, > -- Shuah > Thanks everyone for pointing these out. I've rebased the other series (the KUnit module support one: https://lore.kernel.org/linux-kselftest/20220709032001.819487-1-davidgow@google.com/ ) on top of this. If they all go in via the kselftest/kunit tree, everything should be fine now. 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