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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


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: andreyknvl@google.com, dave.martin@arm.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


_______________________________________________
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2019-06-13 15:30 UTC|newest]

Thread overview: 74+ 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 ` Cristian Marussi
2019-06-13 11:13 ` [PATCH 01/13] kselftest: arm64: introduce new boilerplate code Cristian Marussi
2019-06-13 11:13   ` Cristian Marussi
2019-06-21 10:34   ` Dave Martin
2019-06-21 10:34     ` Dave Martin
2019-06-13 11:13 ` [PATCH 02/13] kselftest: arm64: adds arm64/signal support code Cristian Marussi
2019-06-13 11:13   ` Cristian Marussi
2019-06-21 10:35   ` Dave Martin
2019-06-21 10:35     ` Dave Martin
2019-06-28 18:53     ` Cristian Marussi
2019-06-28 18:53       ` Cristian Marussi
2019-06-13 11:13 ` [PATCH 03/13] kselftest: arm64: mangle_sp_misaligned Cristian Marussi
2019-06-13 11:13   ` Cristian Marussi
2019-06-21 10:35   ` Dave Martin
2019-06-21 10:35     ` Dave Martin
2019-07-02 15:39     ` Cristian Marussi
2019-07-02 15:39       ` Cristian Marussi
2019-07-03  8:39       ` Dave P Martin
2019-07-03  8:39         ` Dave P Martin
2019-06-13 11:13 ` [PATCH 04/13] kselftest: arm64: mangle_pc_invalid Cristian Marussi
2019-06-13 11:13   ` Cristian Marussi
2019-06-21 10:35   ` Dave Martin
2019-06-21 10:35     ` Dave Martin
2019-06-13 11:13 ` [PATCH 05/13] kselftest: arm64: mangle_pstate_invalid_daif_bits Cristian Marussi
2019-06-13 11:13   ` Cristian Marussi
2019-06-21 10:35   ` Dave Martin
2019-06-21 10:35     ` Dave Martin
2019-06-13 11:13 ` [PATCH 06/13] kselftest: arm64: mangle_pstate_invalid_state_toggle Cristian Marussi
2019-06-13 11:13   ` Cristian Marussi
2019-06-21 10:35   ` Dave Martin
2019-06-21 10:35     ` Dave Martin
2019-06-13 11:13 ` Cristian Marussi [this message]
2019-06-13 11:13   ` [PATCH 07/13] kselftest: arm64: mangle_pstate_invalid_mode_el? Cristian Marussi
2019-06-21 10:35   ` Dave Martin
2019-06-21 10:35     ` Dave Martin
2019-06-13 11:13 ` [PATCH 08/13] kselftest: arm64: mangle_pstate_ssbs_regs Cristian Marussi
2019-06-13 11:13   ` Cristian Marussi
2019-06-21 10:35   ` Dave Martin
2019-06-21 10:35     ` Dave Martin
2019-07-02 15:51     ` Cristian Marussi
2019-07-02 15:51       ` Cristian Marussi
2019-07-03  8:56       ` Dave Martin
2019-07-03  8:56         ` Dave Martin
2019-06-13 11:13 ` [PATCH 09/13] kselftest: arm64: fake_sigreturn_misaligned Cristian Marussi
2019-06-13 11:13   ` Cristian Marussi
2019-06-21 10:36   ` Dave Martin
2019-06-21 10:36     ` Dave Martin
2019-06-13 11:13 ` [PATCH 10/13] kselftest: arm64: fake_sigreturn_bad_magic Cristian Marussi
2019-06-13 11:13   ` Cristian Marussi
2019-06-21 10:36   ` Dave Martin
2019-06-21 10:36     ` Dave Martin
2019-07-03 17:41     ` Cristian Marussi
2019-07-03 17:41       ` Cristian Marussi
2019-06-13 11:13 ` [PATCH 11/13] kselftest: arm64: fake_sigreturn_bad_size Cristian Marussi
2019-06-13 11:13   ` Cristian Marussi
2019-06-21 10:36   ` Dave Martin
2019-06-21 10:36     ` Dave Martin
2019-07-03 17:46     ` Cristian Marussi
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
2019-06-13 11:13   ` Cristian Marussi
2019-06-21 10:36   ` Dave Martin
2019-06-21 10:36     ` Dave Martin
2019-07-03 17:50     ` Cristian Marussi
2019-07-03 17:50       ` Cristian Marussi
2019-06-13 11:13 ` [PATCH 13/13] kselftest: arm64: fake_sigreturn_overflow_reserved Cristian Marussi
2019-06-13 11:13   ` Cristian Marussi
2019-06-21 10:36   ` Dave Martin
2019-06-21 10:36     ` Dave Martin
2019-07-03 17:51     ` Cristian Marussi
2019-07-03 17:51       ` Cristian Marussi
2019-06-21 10:34 ` [PATCH 00/13] Add arm64/signal initial kselftest support Dave Martin
2019-06-21 10:34   ` Dave Martin

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