Commit c2820987 authored by Cristian Marussi's avatar Cristian Marussi Committed by Catalin Marinas
Browse files

kselftest: arm64: mangle_pstate_invalid_mode_el[123][ht] 



Add 6 simple mangle testcases that mess with the ucontext_t from within
the signal handler, trying to toggle PSTATE mode bits to trick the system
into switching to EL1/EL2/EL3 using both SP_EL0(t) and SP_ELx(h).
Expects SIGSEGV on test PASS.

Reviewed-by: default avatarDave Martin <Dave.Martin@arm.com>
Signed-off-by: default avatarCristian Marussi <cristian.marussi@arm.com>
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 0fc89f08

tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_mode_el1h.c

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// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (C) 2019 ARM Limited

 *

 * Try to mangle the ucontext from inside a signal handler, toggling

 * the mode bit to escalate exception level: this attempt must be spotted

 * by Kernel and the test case is expected to be termninated via SEGV.

 */



#include "test_signals_utils.h"

#include "testcases.h"



#include "mangle_pstate_invalid_mode_template.h"



DEFINE_TESTCASE_MANGLE_PSTATE_INVALID_MODE(1h);

tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_mode_el1t.c

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// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (C) 2019 ARM Limited

 *

 * Try to mangle the ucontext from inside a signal handler, toggling

 * the mode bit to escalate exception level: this attempt must be spotted

 * by Kernel and the test case is expected to be termninated via SEGV.

 */



#include "test_signals_utils.h"

#include "testcases.h"



#include "mangle_pstate_invalid_mode_template.h"



DEFINE_TESTCASE_MANGLE_PSTATE_INVALID_MODE(1t);

tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_mode_el2h.c

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// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (C) 2019 ARM Limited

 *

 * Try to mangle the ucontext from inside a signal handler, toggling

 * the mode bit to escalate exception level: this attempt must be spotted

 * by Kernel and the test case is expected to be termninated via SEGV.

 */



#include "test_signals_utils.h"

#include "testcases.h"



#include "mangle_pstate_invalid_mode_template.h"



DEFINE_TESTCASE_MANGLE_PSTATE_INVALID_MODE(2h);

tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_mode_el2t.c

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// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (C) 2019 ARM Limited

 *

 * Try to mangle the ucontext from inside a signal handler, toggling

 * the mode bit to escalate exception level: this attempt must be spotted

 * by Kernel and the test case is expected to be termninated via SEGV.

 */



#include "test_signals_utils.h"

#include "testcases.h"



#include "mangle_pstate_invalid_mode_template.h"



DEFINE_TESTCASE_MANGLE_PSTATE_INVALID_MODE(2t);

tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_mode_el3h.c

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// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (C) 2019 ARM Limited

 *

 * Try to mangle the ucontext from inside a signal handler, toggling

 * the mode bit to escalate exception level: this attempt must be spotted

 * by Kernel and the test case is expected to be termninated via SEGV.

 */



#include "test_signals_utils.h"

#include "testcases.h"



#include "mangle_pstate_invalid_mode_template.h"



DEFINE_TESTCASE_MANGLE_PSTATE_INVALID_MODE(3h);

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