Test that ARCH_SHSTK_UNLOCK can't be called from normal (non-ptrace) context.
Signed-off-by: Bill Roberts <[email protected]> --- tools/testing/selftests/x86/test_shadow_stack.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tools/testing/selftests/x86/test_shadow_stack.c b/tools/testing/selftests/x86/test_shadow_stack.c index 3d6ca33edba4..cbe7ca4ebd90 100644 --- a/tools/testing/selftests/x86/test_shadow_stack.c +++ b/tools/testing/selftests/x86/test_shadow_stack.c @@ -1059,6 +1059,14 @@ int main(int argc, char *argv[]) { int ret = 0; + /* Test that ARCH_SHSTK_UNLOCK can't be called from normal (non-ptrace) context. */ + if (!ARCH_PRCTL(ARCH_SHSTK_UNLOCK, ARCH_SHSTK_SHSTK)) { + printf("[FAIL]\tARCH_SHSTK_UNLOCK should fail in a non-ptrace context\n"); + goto out; + } + + printf("[OK]\tCouldn't enable Shadow stack via UNLOCK\n"); + if (ARCH_PRCTL(ARCH_SHSTK_ENABLE, ARCH_SHSTK_SHSTK)) { printf("[SKIP]\tCould not enable Shadow stack\n"); return 1; -- 2.54.0
