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author | Ingo Molnar <mingo@kernel.org> | 2019-12-30 08:10:51 +0100 |
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committer | Ingo Molnar <mingo@kernel.org> | 2019-12-30 08:10:51 +0100 |
commit | 28336be568bb473d16ba80db0801276fb4f1bbe5 (patch) | |
tree | cf2d7a56e6c3ea08139d8d9a5a58b296bd172136 /tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_compat_toggle.c | |
parent | 5cbaefe9743bf14c9d3106db0cc19f8cb0a3ca22 (diff) | |
parent | fd6988496e79a6a4bdb514a4655d2920209eb85d (diff) | |
download | linux-28336be568bb473d16ba80db0801276fb4f1bbe5.tar.gz linux-28336be568bb473d16ba80db0801276fb4f1bbe5.tar.bz2 linux-28336be568bb473d16ba80db0801276fb4f1bbe5.zip |
Merge tag 'v5.5-rc4' into locking/kcsan, to resolve conflicts
Conflicts:
init/main.c
lib/Kconfig.debug
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_compat_toggle.c')
-rw-r--r-- | tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_compat_toggle.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_compat_toggle.c b/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_compat_toggle.c new file mode 100644 index 000000000000..2cb118b0ba05 --- /dev/null +++ b/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_invalid_compat_toggle.c @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 ARM Limited + * + * Try to mangle the ucontext from inside a signal handler, toggling + * the execution state bit: this attempt must be spotted by Kernel and + * the test case is expected to be terminated via SEGV. + */ + +#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_MODE32_BIT; + + return 1; +} + +struct tdescr tde = { + .sanity_disabled = true, + .name = "MANGLE_PSTATE_INVALID_STATE_TOGGLE", + .descr = "Mangling uc_mcontext with INVALID STATE_TOGGLE", + .sig_trig = SIGUSR1, + .sig_ok = SIGSEGV, + .run = mangle_invalid_pstate_run, +}; |