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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 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 B7D3FC3A59B for ; Fri, 30 Aug 2019 14:55:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 93FE123429 for ; Fri, 30 Aug 2019 14:55:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727729AbfH3Ozy (ORCPT ); Fri, 30 Aug 2019 10:55:54 -0400 Received: from foss.arm.com ([217.140.110.172]:33504 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727791AbfH3Ozy (ORCPT ); Fri, 30 Aug 2019 10:55:54 -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 5EF86344; Fri, 30 Aug 2019 07:55:53 -0700 (PDT) Received: from [10.1.197.50] (e120937-lin.cambridge.arm.com [10.1.197.50]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id AB8053F703; Fri, 30 Aug 2019 07:55:52 -0700 (PDT) Subject: Re: [PATCH v3 08/11] kselftest: arm64: fake_sigreturn_missing_fpsimd To: Dave Martin Cc: linux-kselftest@vger.kernel.org, linux-arm-kernel@lists.infradead.org, shuah@kernel.org, andreyknvl@google.com References: <20190802170300.20662-1-cristian.marussi@arm.com> <20190802170300.20662-9-cristian.marussi@arm.com> <20190813162622.GF10425@arm.com> From: Cristian Marussi Message-ID: <35f30b95-5b0b-52f0-5b73-954713f0682d@arm.com> Date: Fri, 30 Aug 2019 15:55:49 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190813162622.GF10425@arm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Hi On 13/08/2019 17:26, Dave Martin wrote: > On Fri, Aug 02, 2019 at 06:02:57PM +0100, Cristian Marussi wrote: >> Added a simple fake_sigreturn testcase which builds a ucontext_t > > Add Ok > >> without the required fpsimd_context and place it onto the stack. >> Expects a SIGSEGV on test PASS. >> >> Signed-off-by: Cristian Marussi >> --- >> .../arm64/signal/testcases/.gitignore | 1 + >> .../testcases/fake_sigreturn_missing_fpsimd.c | 44 +++++++++++++++++++ >> 2 files changed, 45 insertions(+) >> create mode 100644 tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_missing_fpsimd.c >> >> diff --git a/tools/testing/selftests/arm64/signal/testcases/.gitignore b/tools/testing/selftests/arm64/signal/testcases/.gitignore >> index cf2a73599818..17d1c5e73319 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_el3 >> mangle_pstate_ssbs_regs >> fake_sigreturn_bad_magic >> fake_sigreturn_bad_size_for_magic0 >> +fake_sigreturn_missing_fpsimd >> diff --git a/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_missing_fpsimd.c b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_missing_fpsimd.c >> new file mode 100644 >> index 000000000000..b8dd57ce6844 >> --- /dev/null >> +++ b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_missing_fpsimd.c >> @@ -0,0 +1,44 @@ >> +/* SPDX-License-Identifier: GPL-2.0 */ >> +/* Copyright (C) 2019 ARM Limited */ >> + > > signal.h? > Ok >> +#include >> +#include >> + >> +#include "test_signals_utils.h" >> +#include "testcases.h" >> + >> +struct fake_sigframe sf; >> + >> +static int fake_sigreturn_missing_fpsimd_run(struct tdescr *td, >> + siginfo_t *si, ucontext_t *uc) >> +{ >> + size_t resv_sz, offset; >> + struct _aarch64_ctx *head = GET_SF_RESV_HEAD(sf); >> + >> + /* just to fill the ucontext_t with something real */ >> + if (!get_current_context(td, &sf.uc)) >> + return 1; >> + >> + resv_sz = GET_SF_RESV_SIZE(sf); >> + head = get_header(head, FPSIMD_MAGIC, resv_sz, &offset); >> + /* just give up and timeout if still not enough space */ >> + if (head && resv_sz - offset >= HDR_SZ) { >> + fprintf(stderr, "Mangling template header. Spare space:%zd\n", >> + resv_sz - offset); >> + /* Just overwrite fpsmid_context */ >> + write_terminator_record(head); >> + >> + ASSERT_BAD_CONTEXT(&sf.uc); >> + fake_sigreturn(&sf, sizeof(sf), 16); >> + } >> + >> + return 1; >> +} > > [...] > > Seems reasonable otherwise. > > Cheers > ---Dave > 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=-8.3 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,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 0318CC3A59B for ; Fri, 30 Aug 2019 14:56:15 +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 C579F2341B for ; 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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 1i3iJm-0002QG-L5; Fri, 30 Aug 2019 14:56:03 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i3iJd-0002Pk-Qm for linux-arm-kernel@lists.infradead.org; Fri, 30 Aug 2019 14:55:56 +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 5EF86344; Fri, 30 Aug 2019 07:55:53 -0700 (PDT) Received: from [10.1.197.50] (e120937-lin.cambridge.arm.com [10.1.197.50]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id AB8053F703; Fri, 30 Aug 2019 07:55:52 -0700 (PDT) Subject: Re: [PATCH v3 08/11] kselftest: arm64: fake_sigreturn_missing_fpsimd To: Dave Martin References: <20190802170300.20662-1-cristian.marussi@arm.com> <20190802170300.20662-9-cristian.marussi@arm.com> <20190813162622.GF10425@arm.com> From: Cristian Marussi Message-ID: <35f30b95-5b0b-52f0-5b73-954713f0682d@arm.com> Date: Fri, 30 Aug 2019 15:55:49 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190813162622.GF10425@arm.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190830_075554_904668_FB030B5C X-CRM114-Status: GOOD ( 15.49 ) 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, shuah@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org 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 Hi On 13/08/2019 17:26, Dave Martin wrote: > On Fri, Aug 02, 2019 at 06:02:57PM +0100, Cristian Marussi wrote: >> Added a simple fake_sigreturn testcase which builds a ucontext_t > > Add Ok > >> without the required fpsimd_context and place it onto the stack. >> Expects a SIGSEGV on test PASS. >> >> Signed-off-by: Cristian Marussi >> --- >> .../arm64/signal/testcases/.gitignore | 1 + >> .../testcases/fake_sigreturn_missing_fpsimd.c | 44 +++++++++++++++++++ >> 2 files changed, 45 insertions(+) >> create mode 100644 tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_missing_fpsimd.c >> >> diff --git a/tools/testing/selftests/arm64/signal/testcases/.gitignore b/tools/testing/selftests/arm64/signal/testcases/.gitignore >> index cf2a73599818..17d1c5e73319 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_el3 >> mangle_pstate_ssbs_regs >> fake_sigreturn_bad_magic >> fake_sigreturn_bad_size_for_magic0 >> +fake_sigreturn_missing_fpsimd >> diff --git a/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_missing_fpsimd.c b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_missing_fpsimd.c >> new file mode 100644 >> index 000000000000..b8dd57ce6844 >> --- /dev/null >> +++ b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_missing_fpsimd.c >> @@ -0,0 +1,44 @@ >> +/* SPDX-License-Identifier: GPL-2.0 */ >> +/* Copyright (C) 2019 ARM Limited */ >> + > > signal.h? > Ok >> +#include >> +#include >> + >> +#include "test_signals_utils.h" >> +#include "testcases.h" >> + >> +struct fake_sigframe sf; >> + >> +static int fake_sigreturn_missing_fpsimd_run(struct tdescr *td, >> + siginfo_t *si, ucontext_t *uc) >> +{ >> + size_t resv_sz, offset; >> + struct _aarch64_ctx *head = GET_SF_RESV_HEAD(sf); >> + >> + /* just to fill the ucontext_t with something real */ >> + if (!get_current_context(td, &sf.uc)) >> + return 1; >> + >> + resv_sz = GET_SF_RESV_SIZE(sf); >> + head = get_header(head, FPSIMD_MAGIC, resv_sz, &offset); >> + /* just give up and timeout if still not enough space */ >> + if (head && resv_sz - offset >= HDR_SZ) { >> + fprintf(stderr, "Mangling template header. Spare space:%zd\n", >> + resv_sz - offset); >> + /* Just overwrite fpsmid_context */ >> + write_terminator_record(head); >> + >> + ASSERT_BAD_CONTEXT(&sf.uc); >> + fake_sigreturn(&sf, sizeof(sf), 16); >> + } >> + >> + return 1; >> +} > > [...] > > Seems reasonable otherwise. > > Cheers > ---Dave > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel