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 07/13] kselftest: arm64: mangle_pstate_invalid_mode_el?
Date: Thu, 13 Jun 2019 12:13:29 +0100 [thread overview]
Message-ID: <20190613111335.7645-8-cristian.marussi@arm.com> (raw)
In-Reply-To: <20190613111335.7645-1-cristian.marussi@arm.com>
Added 3 simple mangle testcases that mess with the ucontext_t
from within the sig_handler, trying to toggle PSTATE mode bits to
trick the system into switching to EL1/EL2/EL3.
Expects SIGSEGV on test PASS.
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
---
.../arm64/signal/testcases/.gitignore | 3 +++
.../mangle_pstate_invalid_mode_el1.c | 25 +++++++++++++++++++
.../mangle_pstate_invalid_mode_el2.c | 25 +++++++++++++++++++
.../mangle_pstate_invalid_mode_el3.c | 25 +++++++++++++++++++
4 files changed, 78 insertions(+)
create mode 100644 tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_mode_el1.c
create mode 100644 tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_mode_el2.c
create mode 100644 tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_mode_el3.c
diff --git a/tools/testing/selftests/arm64/signal/testcases/.gitignore b/tools/testing/selftests/arm64/signal/testcases/.gitignore
index 91f7aee4b666..e7a1d998b650 100644
--- a/tools/testing/selftests/arm64/signal/testcases/.gitignore
+++ b/tools/testing/selftests/arm64/signal/testcases/.gitignore
@@ -2,3 +2,6 @@ mangle_sp_misaligned
mangle_pc_invalid
mangle_pstate_invalid_daif_bits
mangle_pstate_invalid_state_toggle
+mangle_pstate_invalid_mode_el1
+mangle_pstate_invalid_mode_el2
+mangle_pstate_invalid_mode_el3
diff --git a/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_mode_el1.c b/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_mode_el1.c
new file mode 100644
index 000000000000..9f5bde2e287f
--- /dev/null
+++ b/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_mode_el1.c
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2019 ARM Limited */
+
+#include "test_signals_utils.h"
+#include "testcases.h"
+
+static int mangle_invalid_pstate_run(struct tdescr *td, siginfo_t *si,
+ ucontext_t *uc)
+{
+ ASSERT_GOOD_CONTEXT(uc);
+
+ /* This config should trigger a SIGSEGV by Kernel */
+ uc->uc_mcontext.pstate |= PSR_MODE_EL1t;
+
+ return 1;
+}
+
+struct tdescr tde = {
+ .sanity_disabled = true,
+ .name = "MANGLE_PSTATE_INVALID_MODE_EL1t",
+ .descr = "Mangling uc_mcontext with INVALID MODE EL1t",
+ .sig_trig = SIGUSR1,
+ .sig_ok = SIGSEGV,
+ .run = mangle_invalid_pstate_run,
+};
diff --git a/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_mode_el2.c b/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_mode_el2.c
new file mode 100644
index 000000000000..667e04fadf7b
--- /dev/null
+++ b/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_mode_el2.c
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2019 ARM Limited */
+
+#include "test_signals_utils.h"
+#include "testcases.h"
+
+static int mangle_invalid_pstate_run(struct tdescr *td, siginfo_t *si,
+ ucontext_t *uc)
+{
+ ASSERT_GOOD_CONTEXT(uc);
+
+ /* This config should trigger a SIGSEGV by Kernel */
+ uc->uc_mcontext.pstate |= PSR_MODE_EL2t;
+
+ return 1;
+}
+
+struct tdescr tde = {
+ .sanity_disabled = true,
+ .name = "MANGLE_PSTATE_INVALID_MODE_EL2t",
+ .descr = "Mangling uc_mcontext with INVALID MODE EL2t",
+ .sig_trig = SIGUSR1,
+ .sig_ok = SIGSEGV,
+ .run = mangle_invalid_pstate_run,
+};
diff --git a/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_mode_el3.c b/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_mode_el3.c
new file mode 100644
index 000000000000..17abde0c6883
--- /dev/null
+++ b/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_mode_el3.c
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2019 ARM Limited */
+
+#include "test_signals_utils.h"
+#include "testcases.h"
+
+static int mangle_invalid_pstate_run(struct tdescr *td, siginfo_t *si,
+ ucontext_t *uc)
+{
+ ASSERT_GOOD_CONTEXT(uc);
+
+ /* This config should trigger a SIGSEGV by Kernel */
+ uc->uc_mcontext.pstate |= PSR_MODE_EL3t;
+
+ return 1;
+}
+
+struct tdescr tde = {
+ .sanity_disabled = true,
+ .name = "MANGLE_PSTATE_INVALID_MODE_EL3t",
+ .descr = "Mangling uc_mcontext with INVALID MODE EL3t",
+ .sig_trig = SIGUSR1,
+ .sig_ok = SIGSEGV,
+ .run = mangle_invalid_pstate_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 ` Cristian Marussi [this message]
2019-06-21 10:35 ` [PATCH 07/13] kselftest: arm64: mangle_pstate_invalid_mode_el? 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 ` [PATCH 13/13] kselftest: arm64: fake_sigreturn_overflow_reserved Cristian Marussi
2019-06-21 10:36 ` 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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