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, amit.kachhap@arm.com, suzuki.poulose@arm.com Subject: [PATCH v10 09/12] kselftest: arm64: fake_sigreturn_missing_fpsimd Date: Fri, 25 Oct 2019 18:57:14 +0100 [thread overview] Message-ID: <20191025175717.15154-10-cristian.marussi@arm.com> (raw) In-Reply-To: <20191025175717.15154-1-cristian.marussi@arm.com> Add 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. Reviewed-by: Dave Martin <Dave.Martin@arm.com> Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> --- v3 --> v4 - fix commit - added signal.h - added test description --- .../testcases/fake_sigreturn_missing_fpsimd.c | 50 +++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_missing_fpsimd.c 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..08ecd8073a1a --- /dev/null +++ b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_missing_fpsimd.c @@ -0,0 +1,50 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 ARM Limited + * + * Place a fake sigframe on the stack missing the mandatory FPSIMD + * record: on sigreturn Kernel must spot this attempt and the test + * case is expected to be terminated via SEGV. + */ + +#include <stdio.h> +#include <signal.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); + 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), 0); + } + + return 1; +} + +struct tdescr tde = { + .name = "FAKE_SIGRETURN_MISSING_FPSIMD", + .descr = "Triggers a sigreturn with a missing fpsimd_context", + .sig_ok = SIGSEGV, + .timeout = 3, + .run = fake_sigreturn_missing_fpsimd_run, +}; -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Cristian Marussi <cristian.marussi@arm.com> To: linux-kselftest@vger.kernel.org, linux-arm-kernel@lists.infradead.org, shuah@kernel.org Cc: amit.kachhap@arm.com, andreyknvl@google.com, dave.martin@arm.com, suzuki.poulose@arm.com Subject: [PATCH v10 09/12] kselftest: arm64: fake_sigreturn_missing_fpsimd Date: Fri, 25 Oct 2019 18:57:14 +0100 [thread overview] Message-ID: <20191025175717.15154-10-cristian.marussi@arm.com> (raw) In-Reply-To: <20191025175717.15154-1-cristian.marussi@arm.com> Add 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. Reviewed-by: Dave Martin <Dave.Martin@arm.com> Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> --- v3 --> v4 - fix commit - added signal.h - added test description --- .../testcases/fake_sigreturn_missing_fpsimd.c | 50 +++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_missing_fpsimd.c 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..08ecd8073a1a --- /dev/null +++ b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_missing_fpsimd.c @@ -0,0 +1,50 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 ARM Limited + * + * Place a fake sigframe on the stack missing the mandatory FPSIMD + * record: on sigreturn Kernel must spot this attempt and the test + * case is expected to be terminated via SEGV. + */ + +#include <stdio.h> +#include <signal.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); + 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), 0); + } + + return 1; +} + +struct tdescr tde = { + .name = "FAKE_SIGRETURN_MISSING_FPSIMD", + .descr = "Triggers a sigreturn with a missing fpsimd_context", + .sig_ok = SIGSEGV, + .timeout = 3, + .run = fake_sigreturn_missing_fpsimd_run, +}; -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-10-25 17:58 UTC|newest] Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-10-25 17:57 [PATCH v10 00/12] Add arm64/signal initial kselftest support Cristian Marussi 2019-10-25 17:57 ` Cristian Marussi 2019-10-25 17:57 ` [PATCH v10 01/12] kselftest: arm64: extend toplevel skeleton Makefile Cristian Marussi 2019-10-25 17:57 ` Cristian Marussi 2019-10-25 17:57 ` [PATCH v10 02/12] kselftest: arm64: mangle_pstate_invalid_compat_toggle and common utils Cristian Marussi 2019-10-25 17:57 ` Cristian Marussi 2019-10-25 17:57 ` [PATCH v10 03/12] kselftest: arm64: mangle_pstate_invalid_daif_bits Cristian Marussi 2019-10-25 17:57 ` Cristian Marussi 2019-10-25 17:57 ` [PATCH v10 04/12] kselftest: arm64: mangle_pstate_invalid_mode_el[123][ht] Cristian Marussi 2019-10-25 17:57 ` Cristian Marussi 2019-10-25 17:57 ` [PATCH v10 05/12] kselftest: arm64: extend test_init functionalities Cristian Marussi 2019-10-25 17:57 ` Cristian Marussi 2019-10-25 17:57 ` [PATCH v10 06/12] kselftest: arm64: add helper get_current_context Cristian Marussi 2019-10-25 17:57 ` Cristian Marussi 2019-10-25 17:57 ` [PATCH v10 07/12] kselftest: arm64: fake_sigreturn_bad_magic Cristian Marussi 2019-10-25 17:57 ` Cristian Marussi 2019-10-25 17:57 ` [PATCH v10 08/12] kselftest: arm64: fake_sigreturn_bad_size_for_magic0 Cristian Marussi 2019-10-25 17:57 ` Cristian Marussi 2019-10-25 17:57 ` Cristian Marussi [this message] 2019-10-25 17:57 ` [PATCH v10 09/12] kselftest: arm64: fake_sigreturn_missing_fpsimd Cristian Marussi 2019-10-25 17:57 ` [PATCH v10 10/12] kselftest: arm64: fake_sigreturn_duplicated_fpsimd Cristian Marussi 2019-10-25 17:57 ` Cristian Marussi 2019-10-25 17:57 ` [PATCH v10 11/12] kselftest: arm64: fake_sigreturn_bad_size Cristian Marussi 2019-10-25 17:57 ` Cristian Marussi 2019-10-25 17:57 ` [PATCH v10 12/12] kselftest: arm64: fake_sigreturn_misaligned_sp Cristian Marussi 2019-10-25 17:57 ` Cristian Marussi 2019-11-08 14:50 ` [PATCH v10 00/12] Add arm64/signal initial kselftest support Catalin Marinas 2019-11-08 14:50 ` Catalin Marinas
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