From patchwork Thu Jun 13 11:13:31 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cristian Marussi X-Patchwork-Id: 10992315 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AA9341515 for ; Thu, 13 Jun 2019 15:30:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 990F920243 for ; Thu, 13 Jun 2019 15:30:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8D8232223E; Thu, 13 Jun 2019 15:30:35 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 27CD220243 for ; Thu, 13 Jun 2019 15:30:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728766AbfFMPae (ORCPT ); Thu, 13 Jun 2019 11:30:34 -0400 Received: from foss.arm.com ([217.140.110.172]:38158 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728764AbfFMLOi (ORCPT ); Thu, 13 Jun 2019 07:14:38 -0400 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 B28ED3EF; Thu, 13 Jun 2019 04:14:37 -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 43A9A3F694; Thu, 13 Jun 2019 04:16:20 -0700 (PDT) From: Cristian Marussi To: linux-kselftest@vger.kernel.org, linux-arm-kernel@lists.infradead.org, shuah@kernel.org Cc: dave.martin@arm.com, andreyknvl@google.com Subject: [PATCH 09/13] kselftest: arm64: fake_sigreturn_misaligned Date: Thu, 13 Jun 2019 12:13:31 +0100 Message-Id: <20190613111335.7645-10-cristian.marussi@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190613111335.7645-1-cristian.marussi@arm.com> References: <20190613111335.7645-1-cristian.marussi@arm.com> Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Added a simple fake_sigreturn testcase which builds a good ucontext_t and tries to place it onto the stack in a misaligned way. Expects a SIGSEGV on test PASS. Signed-off-by: Cristian Marussi --- .../arm64/signal/testcases/.gitignore | 1 + .../testcases/fake_sigreturn_misaligned.c | 30 +++++++++++++++++++ 2 files changed, 31 insertions(+) create mode 100644 tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_misaligned.c diff --git a/tools/testing/selftests/arm64/signal/testcases/.gitignore b/tools/testing/selftests/arm64/signal/testcases/.gitignore index c2972c3f33ca..3e6b26be6727 100644 --- a/tools/testing/selftests/arm64/signal/testcases/.gitignore +++ b/tools/testing/selftests/arm64/signal/testcases/.gitignore @@ -6,3 +6,4 @@ mangle_pstate_invalid_mode_el1 mangle_pstate_invalid_mode_el2 mangle_pstate_invalid_mode_el3 mangle_pstate_ssbs_regs +fake_sigreturn_misaligned diff --git a/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_misaligned.c b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_misaligned.c new file mode 100644 index 000000000000..d551858dd9dd --- /dev/null +++ b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_misaligned.c @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (C) 2019 ARM Limited */ + +#include + +#include "test_signals_utils.h" +#include "testcases.h" + +struct a_sigframe sf; + +static int fake_sigreturn_misaligned_run(struct tdescr *td, + siginfo_t *si, ucontext_t *uc) +{ + /* just to fill the ucontext_t with something real */ + if (!get_current_context(td, &sf.uc)) + return 1; + + /* Forcing sigframe on misaligned (=!16) SP */ + fake_sigreturn(&sf, sizeof(sf), 8); + + return 1; +} + +struct tdescr tde = { + .name = "FAKE_SIGRETURN_MISALIGNED_SP", + .descr = "Triggers a fake sigreturn with a misaligned sigframe on SP", + .sig_ok = SIGSEGV, + .timeout = 3, + .run = fake_sigreturn_misaligned_run, +};