Introduce hwasan mode for linker
This mode instructs the linker to search for libraries in hwasan
subdirectories of all library search paths. This is set up to contain a
hwasan-enabled copy of libc, which is needed for HWASan programs to
operate. There are two ways this mode can be enabled:
* for native binaries, by using the linker_hwasan64 symlink as its
interpreter
* for apps: by setting the LD_HWASAN environment variable in wrap.sh
Bug: 276930343
Change-Id: I0f4117a50091616f26947fbe37a28ee573b97ad0
diff --git a/tests/Android.bp b/tests/Android.bp
index 1949079..cd20cd7 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -1112,6 +1112,30 @@
}
cc_test {
+ name: "hwasan_test",
+ enabled: false,
+ // This does not use bionic_tests_defaults because it is not supported on
+ // host.
+ arch: {
+ arm64: {
+ enabled: true,
+ },
+ },
+ sanitize: {
+ hwaddress: true,
+ },
+ srcs: [
+ "hwasan_test.cpp",
+ ],
+ shared_libs: [
+ "libbase",
+ ],
+ data_libs: ["libtest_simple_hwasan", "libtest_simple_hwasan_nohwasan"],
+ header_libs: ["bionic_libc_platform_headers"],
+ test_suites: ["device-tests"],
+}
+
+cc_test {
name: "bionic-stress-tests",
defaults: [
"bionic_tests_defaults",
diff --git a/tests/dlfcn_test.cpp b/tests/dlfcn_test.cpp
index 3f70279..0c71b2a 100644
--- a/tests/dlfcn_test.cpp
+++ b/tests/dlfcn_test.cpp
@@ -971,9 +971,15 @@
}
#define ALTERNATE_PATH_TO_SYSTEM_LIB "/system/lib64/" ABI_STRING "/"
+#if __has_feature(hwaddress_sanitizer)
+#define PATH_TO_LIBC PATH_TO_SYSTEM_LIB "hwasan/libc.so"
+#define PATH_TO_BOOTSTRAP_LIBC PATH_TO_SYSTEM_LIB "bootstrap/hwasan/libc.so"
+#define ALTERNATE_PATH_TO_LIBC ALTERNATE_PATH_TO_SYSTEM_LIB "hwasan/libc.so"
+#else
#define PATH_TO_LIBC PATH_TO_SYSTEM_LIB "libc.so"
#define PATH_TO_BOOTSTRAP_LIBC PATH_TO_SYSTEM_LIB "bootstrap/libc.so"
#define ALTERNATE_PATH_TO_LIBC ALTERNATE_PATH_TO_SYSTEM_LIB "libc.so"
+#endif
TEST(dlfcn, dladdr_libc) {
#if defined(__GLIBC__)
diff --git a/tests/hwasan_test.cpp b/tests/hwasan_test.cpp
new file mode 100644
index 0000000..5c21495
--- /dev/null
+++ b/tests/hwasan_test.cpp
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <dlfcn.h>
+#include <stdlib.h>
+
+#include <gtest/gtest.h>
+
+#include <android-base/silent_death_test.h>
+#include <android-base/test_utils.h>
+
+using HwasanDeathTest = SilentDeathTest;
+
+TEST_F(HwasanDeathTest, UseAfterFree) {
+ EXPECT_DEATH(
+ {
+ void* m = malloc(1);
+ volatile char* x = const_cast<volatile char*>(reinterpret_cast<char*>(m));
+ *x = 1;
+ free(m);
+ *x = 2;
+ },
+ "use-after-free");
+}
+
+TEST_F(HwasanDeathTest, OutOfBounds) {
+ EXPECT_DEATH(
+ {
+ void* m = malloc(1);
+ volatile char* x = const_cast<volatile char*>(reinterpret_cast<char*>(m));
+ x[1] = 1;
+ },
+ "buffer-overflow");
+}
+
+// Check whether dlopen of /foo/bar.so checks /foo/hwasan/bar.so first.
+TEST(HwasanTest, DlopenAbsolutePath) {
+ std::string path = android::base::GetExecutableDirectory() + "/libtest_simple_hwasan.so";
+ ASSERT_EQ(0, access(path.c_str(), F_OK)); // Verify test setup.
+ std::string hwasan_path =
+ android::base::GetExecutableDirectory() + "/hwasan/libtest_simple_hwasan.so";
+ ASSERT_EQ(0, access(hwasan_path.c_str(), F_OK)); // Verify test setup.
+
+ void* handle = dlopen(path.c_str(), RTLD_NOW);
+ ASSERT_TRUE(handle != nullptr);
+ uint32_t* compiled_with_hwasan =
+ reinterpret_cast<uint32_t*>(dlsym(handle, "dlopen_testlib_compiled_with_hwasan"));
+ EXPECT_TRUE(*compiled_with_hwasan);
+ dlclose(handle);
+}
+
+TEST(HwasanTest, IsRunningWithHWasan) {
+ EXPECT_TRUE(running_with_hwasan());
+}
diff --git a/tests/libs/Android.bp b/tests/libs/Android.bp
index 8ae2257..a2fbe55 100644
--- a/tests/libs/Android.bp
+++ b/tests/libs/Android.bp
@@ -243,6 +243,38 @@
}
// -----------------------------------------------------------------------------
+// Libraries used by hwasan_test
+// -----------------------------------------------------------------------------
+cc_test_library {
+ name: "libtest_simple_hwasan",
+ arch: {
+ arm64: {
+ enabled: true,
+ },
+ },
+ sanitize: {
+ hwaddress: true,
+ },
+ relative_install_path: "hwasan",
+ enabled: false,
+ srcs: ["dlopen_testlib_simple_hwasan.cpp"],
+}
+
+cc_test_library {
+ // A weird name. This is the vanilla (non-HWASan) copy of the library that
+ // is used for the hwasan test.
+ name: "libtest_simple_hwasan_nohwasan",
+ arch: {
+ arm64: {
+ enabled: true,
+ },
+ },
+ stem: "libtest_simple_hwasan",
+ enabled: false,
+ srcs: ["dlopen_testlib_simple_hwasan.cpp"],
+}
+
+// -----------------------------------------------------------------------------
// Library used by dlext direct unload on the namespace boundary tests
// -----------------------------------------------------------------------------
cc_test_library {
diff --git a/tests/libs/dlopen_testlib_simple_hwasan.cpp b/tests/libs/dlopen_testlib_simple_hwasan.cpp
new file mode 100644
index 0000000..b92e05f
--- /dev/null
+++ b/tests/libs/dlopen_testlib_simple_hwasan.cpp
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdint.h>
+
+#if __has_feature(hwaddress_sanitizer)
+extern "C" uint32_t dlopen_testlib_compiled_with_hwasan = true;
+#else
+extern "C" uint32_t dlopen_testlib_compiled_with_hwasan = false;
+#endif
+
+extern "C" bool dlopen_testlib_simple_hwasan_func() {
+ return true;
+}