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=-7.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 28B88C433FF for ; Fri, 2 Aug 2019 17:04:03 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EC71F2173E for ; Fri, 2 Aug 2019 17:04:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Nahw11VC" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EC71F2173E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=HTHL/qwrwrfJvXDJnwEFxgZgG6dBDRY0y1g7qlQHEuk=; b=Nahw11VCWvHsvClE+vw4HItVo2 u7RM2f8vlZRB+oDC7i3O4DLeEzpq0fsFhDj1p1PkFuP845BdxHdAG2FAfbPnHRuT5/BMxECr128L1 5E/uAw8sLFjUsnsoTcMxJSRX8YyDEtpRBtzc+iBobVASoKXEjmlmbz9Pn3gafEZ95R8ckHOvgoiwC Of4YZiMJd3aCAvFUzn92J4vesXpzFtprBSLzmHKLXHh+pAp0ELDDsIiqlGHTpAkWCeQmBoRdXf7L2 zjnt+4/k1GnIwmPbbjiDFREnquxds2GnLQsN4oNut9ZfkRCplRMGOdmFWgN7Jox5xOS1eNgYQK5N2 /wOmtXjA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1htayC-0002gR-BU; Fri, 02 Aug 2019 17:03:56 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1htaxr-0002DO-CR for linux-arm-kernel@lists.infradead.org; Fri, 02 Aug 2019 17:03:37 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id E3F2F1597; Fri, 2 Aug 2019 10:03:33 -0700 (PDT) Received: from e120937-lin.cambridge.arm.com (e120937-lin.cambridge.arm.com [10.1.197.50]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 2391A3F575; Fri, 2 Aug 2019 10:03:33 -0700 (PDT) From: Cristian Marussi To: linux-kselftest@vger.kernel.org, linux-arm-kernel@lists.infradead.org, shuah@kernel.org Subject: [PATCH v3 03/11] kselftest: arm64: mangle_pstate_invalid_daif_bits Date: Fri, 2 Aug 2019 18:02:52 +0100 Message-Id: <20190802170300.20662-4-cristian.marussi@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190802170300.20662-1-cristian.marussi@arm.com> References: <20190802170300.20662-1-cristian.marussi@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190802_100335_466743_CDEFA7DD X-CRM114-Status: GOOD ( 11.84 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: andreyknvl@google.com, dave.martin@arm.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Added a simple mangle testcase which messes with the ucontext_t from within the sig_handler, trying to set PSTATE DAIF bits to an invalid value (masking everything). Expects SIGSEGV on test PASS. Signed-off-by: Cristian Marussi --- .../arm64/signal/testcases/.gitignore | 1 + .../mangle_pstate_invalid_daif_bits.c | 28 +++++++++++++++++++ 2 files changed, 29 insertions(+) create mode 100644 tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_daif_bits.c diff --git a/tools/testing/selftests/arm64/signal/testcases/.gitignore b/tools/testing/selftests/arm64/signal/testcases/.gitignore index 8651272e3cfc..8a0a29f0cc2a 100644 --- a/tools/testing/selftests/arm64/signal/testcases/.gitignore +++ b/tools/testing/selftests/arm64/signal/testcases/.gitignore @@ -1 +1,2 @@ mangle_pstate_invalid_compat_toggle +mangle_pstate_invalid_daif_bits diff --git a/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_daif_bits.c b/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_daif_bits.c new file mode 100644 index 000000000000..af899d4bb655 --- /dev/null +++ b/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_daif_bits.c @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (C) 2019 ARM Limited */ + +#include "test_signals_utils.h" +#include "testcases.h" + +static int mangle_invalid_pstate_run(struct tdescr *td, siginfo_t *si, + ucontext_t *uc) +{ + ASSERT_GOOD_CONTEXT(uc); + + /* + * This config should trigger a SIGSEGV by Kernel when it checks + * the sigframe consistency in valid_user_regs() routine. + */ + uc->uc_mcontext.pstate |= PSR_D_BIT | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT; + + return 1; +} + +struct tdescr tde = { + .sanity_disabled = true, + .name = "MANGLE_PSTATE_INVALID_DAIF_BITS", + .descr = "Mangling uc_mcontext with INVALID DAIF_BITS", + .sig_trig = SIGUSR1, + .sig_ok = SIGSEGV, + .run = mangle_invalid_pstate_run, +}; -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel