From: Cristian Marussi <cristian.marussi@arm.com>
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 13/13] kselftest: arm64: fake_sigreturn_overflow_reserved
Date: Thu, 13 Jun 2019 12:13:35 +0100 [thread overview]
Message-ID: <20190613111335.7645-14-cristian.marussi@arm.com> (raw)
In-Reply-To: <20190613111335.7645-1-cristian.marussi@arm.com>
Added a simple fake_sigreturn testcase which builds a ucontext_t
with the whole __reserved area overflowed with ESR_MAGIC headers
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 +
.../fake_sigreturn_overflow_reserved.c | 48 +++++++++++++++++++
2 files changed, 49 insertions(+)
create mode 100644 tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_overflow_reserved.c
diff --git a/tools/testing/selftests/arm64/signal/testcases/.gitignore b/tools/testing/selftests/arm64/signal/testcases/.gitignore
index 66ba865b3b7e..69a18391c220 100644
--- a/tools/testing/selftests/arm64/signal/testcases/.gitignore
+++ b/tools/testing/selftests/arm64/signal/testcases/.gitignore
@@ -10,3 +10,4 @@ fake_sigreturn_misaligned
fake_sigreturn_bad_magic
fake_sigreturn_bad_size
fake_sigreturn_bad_size_for_magic0
+fake_sigreturn_overflow_reserved
diff --git a/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_overflow_reserved.c b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_overflow_reserved.c
new file mode 100644
index 000000000000..eba109453a65
--- /dev/null
+++ b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_overflow_reserved.c
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2019 ARM Limited */
+
+#include <asm/sigcontext.h>
+#include <ucontext.h>
+#include <stdio.h>
+
+#include "test_signals_utils.h"
+#include "testcases.h"
+
+struct a_sigframe sf;
+
+static int fake_sigreturn_overflow_reserved_run(struct tdescr *td,
+ siginfo_t *si,
+ ucontext_t *uc)
+{
+ size_t offset = 0;
+ 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;
+
+ /* find the terminator, preserving existig headers */
+ head = get_terminator(head, GET_SF_RESV_SIZE(sf), &offset);
+ if (head) {
+ /* fill the __reserved area till the end */
+ do {
+ head->magic = ESR_MAGIC;
+ head->size = sizeof(struct esr_context);
+ offset += head->size;
+ head = GET_RESV_NEXT_HEAD(head);
+ } while (offset < GET_SF_RESV_SIZE(sf));
+
+ ASSERT_BAD_CONTEXT(&sf.uc);
+ fake_sigreturn(&sf, sizeof(sf), 16);
+ }
+
+ return 1;
+}
+
+struct tdescr tde = {
+ .name = "FAKE_SIGRETURN_OVERFLOW_RESERVED",
+ .descr = "Triggers a fake sigreturn with an overflowed sigframe",
+ .sig_ok = SIGSEGV,
+ .timeout = 3,
+ .run = fake_sigreturn_overflow_reserved_run,
+};
--
2.17.1
next prev parent reply other threads:[~2019-06-13 15:30 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-13 11:13 [PATCH 00/13] Add arm64/signal initial kselftest support Cristian Marussi
2019-06-13 11:13 ` [PATCH 01/13] kselftest: arm64: introduce new boilerplate code Cristian Marussi
2019-06-21 10:34 ` Dave Martin
2019-06-13 11:13 ` [PATCH 02/13] kselftest: arm64: adds arm64/signal support code Cristian Marussi
2019-06-21 10:35 ` Dave Martin
2019-06-28 18:53 ` Cristian Marussi
2019-06-13 11:13 ` [PATCH 03/13] kselftest: arm64: mangle_sp_misaligned Cristian Marussi
2019-06-21 10:35 ` Dave Martin
2019-07-02 15:39 ` Cristian Marussi
2019-07-03 8:39 ` Dave P Martin
2019-06-13 11:13 ` [PATCH 04/13] kselftest: arm64: mangle_pc_invalid Cristian Marussi
2019-06-21 10:35 ` Dave Martin
2019-06-13 11:13 ` [PATCH 05/13] kselftest: arm64: mangle_pstate_invalid_daif_bits Cristian Marussi
2019-06-21 10:35 ` Dave Martin
2019-06-13 11:13 ` [PATCH 06/13] kselftest: arm64: mangle_pstate_invalid_state_toggle Cristian Marussi
2019-06-21 10:35 ` Dave Martin
2019-06-13 11:13 ` [PATCH 07/13] kselftest: arm64: mangle_pstate_invalid_mode_el? Cristian Marussi
2019-06-21 10:35 ` Dave Martin
2019-06-13 11:13 ` [PATCH 08/13] kselftest: arm64: mangle_pstate_ssbs_regs Cristian Marussi
2019-06-21 10:35 ` Dave Martin
2019-07-02 15:51 ` Cristian Marussi
2019-07-03 8:56 ` Dave Martin
2019-06-13 11:13 ` [PATCH 09/13] kselftest: arm64: fake_sigreturn_misaligned Cristian Marussi
2019-06-21 10:36 ` Dave Martin
2019-06-13 11:13 ` [PATCH 10/13] kselftest: arm64: fake_sigreturn_bad_magic Cristian Marussi
2019-06-21 10:36 ` Dave Martin
2019-07-03 17:41 ` Cristian Marussi
2019-06-13 11:13 ` [PATCH 11/13] kselftest: arm64: fake_sigreturn_bad_size Cristian Marussi
2019-06-21 10:36 ` Dave Martin
2019-07-03 17:46 ` Cristian Marussi
2019-06-13 11:13 ` [PATCH 12/13] kselftest: arm64: fake_sigreturn_bad_size_for_magic0 Cristian Marussi
2019-06-21 10:36 ` Dave Martin
2019-07-03 17:50 ` Cristian Marussi
2019-06-13 11:13 ` Cristian Marussi [this message]
2019-06-21 10:36 ` [PATCH 13/13] kselftest: arm64: fake_sigreturn_overflow_reserved Dave Martin
2019-07-03 17:51 ` Cristian Marussi
2019-06-21 10:34 ` [PATCH 00/13] Add arm64/signal initial kselftest support Dave Martin
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