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 Subject: [PATCH v6 07/11] kselftest: arm64: fake_sigreturn_bad_size_for_magic0 Date: Tue, 10 Sep 2019 13:31:07 +0100 [thread overview] Message-ID: <20190910123111.33478-8-cristian.marussi@arm.com> (raw) In-Reply-To: <20190910123111.33478-1-cristian.marussi@arm.com> Add a simple fake_sigreturn testcase which builds a ucontext_t with a badly sized terminator record 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> --- v5 --> v6 - removed unneeded locals - removed unneeded timeout on failure v3 --> v4 - fix commit - add signal.h include - using new get_starting_head() helper - added test description --- .../fake_sigreturn_bad_size_for_magic0.c | 46 +++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_bad_size_for_magic0.c diff --git a/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_bad_size_for_magic0.c b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_bad_size_for_magic0.c new file mode 100644 index 000000000000..a44b88bfc81a --- /dev/null +++ b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_bad_size_for_magic0.c @@ -0,0 +1,46 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 ARM Limited + * + * Place a fake sigframe on the stack including a badly sized terminator + * record: on sigreturn Kernel must spot this attempt and the test case + * is expected to be terminated via SEGV. + */ + +#include <signal.h> +#include <ucontext.h> + +#include "test_signals_utils.h" +#include "testcases.h" + +struct fake_sigframe sf; + +static int fake_sigreturn_bad_size_for_magic0_run(struct tdescr *td, + siginfo_t *si, ucontext_t *uc) +{ + struct _aarch64_ctx *shead = GET_SF_RESV_HEAD(sf), *head; + + /* just to fill the ucontext_t with something real */ + if (!get_current_context(td, &sf.uc)) + return 1; + + /* at least HDR_SZ for the badly sized terminator. */ + head = get_starting_head(shead, HDR_SZ, GET_SF_RESV_SIZE(sf), NULL); + if (!head) + return 0; + + head->magic = 0; + head->size = HDR_SZ; + ASSERT_BAD_CONTEXT(&sf.uc); + fake_sigreturn(&sf, sizeof(sf), 0); + + return 1; +} + +struct tdescr tde = { + .name = "FAKE_SIGRETURN_BAD_SIZE_FOR_TERMINATOR", + .descr = "Trigger a sigreturn using non-zero size terminator", + .sig_ok = SIGSEGV, + .timeout = 3, + .run = fake_sigreturn_bad_size_for_magic0_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 Subject: [PATCH v6 07/11] kselftest: arm64: fake_sigreturn_bad_size_for_magic0 Date: Tue, 10 Sep 2019 13:31:07 +0100 [thread overview] Message-ID: <20190910123111.33478-8-cristian.marussi@arm.com> (raw) In-Reply-To: <20190910123111.33478-1-cristian.marussi@arm.com> Add a simple fake_sigreturn testcase which builds a ucontext_t with a badly sized terminator record 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> --- v5 --> v6 - removed unneeded locals - removed unneeded timeout on failure v3 --> v4 - fix commit - add signal.h include - using new get_starting_head() helper - added test description --- .../fake_sigreturn_bad_size_for_magic0.c | 46 +++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_bad_size_for_magic0.c diff --git a/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_bad_size_for_magic0.c b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_bad_size_for_magic0.c new file mode 100644 index 000000000000..a44b88bfc81a --- /dev/null +++ b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_bad_size_for_magic0.c @@ -0,0 +1,46 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 ARM Limited + * + * Place a fake sigframe on the stack including a badly sized terminator + * record: on sigreturn Kernel must spot this attempt and the test case + * is expected to be terminated via SEGV. + */ + +#include <signal.h> +#include <ucontext.h> + +#include "test_signals_utils.h" +#include "testcases.h" + +struct fake_sigframe sf; + +static int fake_sigreturn_bad_size_for_magic0_run(struct tdescr *td, + siginfo_t *si, ucontext_t *uc) +{ + struct _aarch64_ctx *shead = GET_SF_RESV_HEAD(sf), *head; + + /* just to fill the ucontext_t with something real */ + if (!get_current_context(td, &sf.uc)) + return 1; + + /* at least HDR_SZ for the badly sized terminator. */ + head = get_starting_head(shead, HDR_SZ, GET_SF_RESV_SIZE(sf), NULL); + if (!head) + return 0; + + head->magic = 0; + head->size = HDR_SZ; + ASSERT_BAD_CONTEXT(&sf.uc); + fake_sigreturn(&sf, sizeof(sf), 0); + + return 1; +} + +struct tdescr tde = { + .name = "FAKE_SIGRETURN_BAD_SIZE_FOR_TERMINATOR", + .descr = "Trigger a sigreturn using non-zero size terminator", + .sig_ok = SIGSEGV, + .timeout = 3, + .run = fake_sigreturn_bad_size_for_magic0_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:[~2019-09-10 12:31 UTC|newest] Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-09-10 12:31 [PATCH v6 00/11] Add arm64/signal initial kselftest support Cristian Marussi 2019-09-10 12:31 ` Cristian Marussi 2019-09-10 12:31 ` [PATCH v6 01/11] kselftest: arm64: extend toplevel skeleton Makefile Cristian Marussi 2019-09-10 12:31 ` Cristian Marussi 2019-09-17 13:42 ` Anders Roxell 2019-09-17 13:42 ` Anders Roxell 2019-09-17 15:17 ` Cristian Marussi 2019-09-17 15:17 ` Cristian Marussi 2019-09-17 15:29 ` shuah 2019-09-17 15:29 ` shuah 2019-09-17 15:58 ` Cristian Marussi 2019-09-17 15:58 ` Cristian Marussi 2019-09-17 16:16 ` shuah 2019-09-17 16:16 ` shuah 2019-09-17 16:05 ` Dave Martin 2019-09-17 16:05 ` Dave Martin 2019-09-17 16:18 ` shuah 2019-09-17 16:18 ` shuah 2019-09-18 10:17 ` Dave Martin 2019-09-18 10:17 ` Dave Martin 2019-09-18 10:59 ` Cristian Marussi 2019-09-18 10:59 ` Cristian Marussi 2019-10-07 18:22 ` Cristian Marussi 2019-10-07 18:22 ` Cristian Marussi 2019-09-10 12:31 ` [PATCH v6 02/11] kselftest: arm64: mangle_pstate_invalid_compat_toggle and common utils Cristian Marussi 2019-09-10 12:31 ` Cristian Marussi 2019-09-17 16:05 ` Dave Martin 2019-09-17 16:05 ` Dave Martin 2019-09-26 11:00 ` Cristian Marussi 2019-09-26 11:00 ` Cristian Marussi 2019-09-10 12:31 ` [PATCH v6 03/11] kselftest: arm64: mangle_pstate_invalid_daif_bits Cristian Marussi 2019-09-10 12:31 ` Cristian Marussi 2019-09-10 12:31 ` [PATCH v6 04/11] kselftest: arm64: mangle_pstate_invalid_mode_el[123][ht] Cristian Marussi 2019-09-10 12:31 ` Cristian Marussi 2019-09-10 12:31 ` [PATCH v6 05/11] kselftest: arm64: mangle_pstate_ssbs_regs Cristian Marussi 2019-09-10 12:31 ` Cristian Marussi 2019-09-17 16:05 ` Dave Martin 2019-09-17 16:05 ` Dave Martin 2019-10-07 18:23 ` Cristian Marussi 2019-10-07 18:23 ` Cristian Marussi 2019-10-08 15:07 ` Dave Martin 2019-10-08 15:07 ` Dave Martin 2019-09-10 12:31 ` [PATCH v6 06/11] kselftest: arm64: fake_sigreturn_bad_magic Cristian Marussi 2019-09-10 12:31 ` Cristian Marussi 2019-09-17 16:06 ` Dave Martin 2019-09-17 16:06 ` Dave Martin 2019-10-07 18:23 ` Cristian Marussi 2019-10-07 18:23 ` Cristian Marussi 2019-09-10 12:31 ` Cristian Marussi [this message] 2019-09-10 12:31 ` [PATCH v6 07/11] kselftest: arm64: fake_sigreturn_bad_size_for_magic0 Cristian Marussi 2019-09-10 12:31 ` [PATCH v6 08/11] kselftest: arm64: fake_sigreturn_missing_fpsimd Cristian Marussi 2019-09-10 12:31 ` Cristian Marussi 2019-09-10 12:31 ` [PATCH v6 09/11] kselftest: arm64: fake_sigreturn_duplicated_fpsimd Cristian Marussi 2019-09-10 12:31 ` Cristian Marussi 2019-09-17 16:06 ` Dave Martin 2019-09-17 16:06 ` Dave Martin 2019-09-10 12:31 ` [PATCH v6 10/11] kselftest: arm64: fake_sigreturn_bad_size Cristian Marussi 2019-09-10 12:31 ` Cristian Marussi 2019-09-10 12:31 ` [PATCH v6 11/11] kselftest: arm64: fake_sigreturn_misaligned_sp Cristian Marussi 2019-09-10 12:31 ` Cristian Marussi
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