From: Cristian Marussi <cristian.marussi@arm.com> To: linux-kselftest@vger.kernel.org, linux-arm-kernel@lists.infradead.org, shuah@kernel.org Cc: andreyknvl@google.com, dave.martin@arm.com Subject: [PATCH v3 08/11] kselftest: arm64: fake_sigreturn_missing_fpsimd Date: Fri, 2 Aug 2019 18:02:57 +0100 Message-ID: <20190802170300.20662-9-cristian.marussi@arm.com> (raw) In-Reply-To: <20190802170300.20662-1-cristian.marussi@arm.com> Added a simple fake_sigreturn testcase which builds a ucontext_t without the required fpsimd_context and place it onto the stack. Expects a SIGSEGV on test PASS. Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> --- .../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 */ + +#include <stdio.h> +#include <ucontext.h> + +#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; +} + +struct tdescr tde = { + .name = "FAKE_SIGRETURN_MISSING_FPSIMD", + .descr = "Triggers a fake sigreturn with a sigframe missing the mandatory fpsimd_context", + .sig_ok = SIGSEGV, + .timeout = 3, + .run = fake_sigreturn_missing_fpsimd_run, +}; -- 2.17.1
next prev parent reply index Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-08-02 17:02 [PATCH v3 00/11] Add arm64/signal initial kselftest support Cristian Marussi 2019-08-02 17:02 ` [PATCH v3 01/11] kselftest: arm64: introduce new boilerplate code Cristian Marussi 2019-08-13 16:23 ` Dave Martin 2019-08-27 12:14 ` Cristian Marussi 2019-08-02 17:02 ` [PATCH v3 02/11] kselftest: arm64: adds first test and common utils Cristian Marussi 2019-08-06 15:50 ` Cristian Marussi 2019-08-07 15:42 ` Cristian Marussi 2019-08-09 10:54 ` Cristian Marussi 2019-08-09 11:16 ` Dave Martin 2019-08-09 12:20 ` Cristian Marussi 2019-08-09 12:32 ` Dave Martin 2019-08-12 12:43 ` Amit Kachhap 2019-08-13 13:22 ` Cristian Marussi 2019-08-14 10:22 ` Amit Kachhap 2019-08-27 14:24 ` Cristian Marussi 2019-08-13 16:24 ` Dave Martin 2019-08-28 17:34 ` Cristian Marussi 2019-09-03 15:34 ` Dave Martin 2019-09-03 16:08 ` Cristian Marussi 2019-08-02 17:02 ` [PATCH v3 03/11] kselftest: arm64: mangle_pstate_invalid_daif_bits Cristian Marussi 2019-08-13 16:24 ` Dave Martin 2019-08-29 10:19 ` Cristian Marussi 2019-08-02 17:02 ` [PATCH v3 04/11] kselftest: arm64: mangle_pstate_invalid_mode_el Cristian Marussi 2019-08-13 16:24 ` Dave Martin 2019-08-29 11:50 ` Cristian Marussi 2019-08-02 17:02 ` [PATCH v3 05/11] kselftest: arm64: mangle_pstate_ssbs_regs Cristian Marussi 2019-08-13 16:25 ` Dave Martin 2019-08-29 15:35 ` Cristian Marussi 2019-08-02 17:02 ` [PATCH v3 06/11] kselftest: arm64: fake_sigreturn_bad_magic Cristian Marussi 2019-08-13 16:25 ` Dave Martin 2019-08-30 14:29 ` Cristian Marussi 2019-09-04 10:05 ` Dave Martin 2019-09-04 10:37 ` Cristian Marussi 2019-09-04 10:47 ` Dave Martin 2019-08-02 17:02 ` [PATCH v3 07/11] kselftest: arm64: fake_sigreturn_bad_size_for_magic0 Cristian Marussi 2019-08-13 16:25 ` Dave Martin 2019-08-30 14:49 ` Cristian Marussi 2019-08-02 17:02 ` Cristian Marussi [this message] 2019-08-13 16:26 ` [PATCH v3 08/11] kselftest: arm64: fake_sigreturn_missing_fpsimd Dave Martin 2019-08-30 14:55 ` Cristian Marussi 2019-08-02 17:02 ` [PATCH v3 09/11] kselftest: arm64: fake_sigreturn_duplicated_fpsimd Cristian Marussi 2019-08-13 16:26 ` Dave Martin 2019-08-30 15:11 ` Cristian Marussi 2019-08-02 17:02 ` [PATCH v3 10/11] kselftest: arm64: fake_sigreturn_bad_size Cristian Marussi 2019-08-13 16:26 ` Dave Martin 2019-08-30 15:21 ` Cristian Marussi 2019-08-02 17:03 ` [PATCH v3 11/11] kselftest: arm64: fake_sigreturn_misaligned_sp Cristian Marussi 2019-08-07 16:04 ` Cristian Marussi 2019-08-13 16:28 ` Dave Martin 2019-08-30 15:22 ` Cristian Marussi 2019-08-13 16:27 ` Dave Martin 2019-08-30 16:33 ` Cristian Marussi 2019-08-13 16:22 ` [PATCH v3 00/11] Add arm64/signal initial kselftest support Dave Martin 2019-08-30 16:40 ` Cristian Marussi 2019-09-02 10:53 ` Dave Martin 2019-09-02 11:30 ` Cristian Marussi
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