diff --git a/tests/Android.bp b/tests/Android.bp
index 3061142..ee49e65 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -62,7 +62,10 @@
         // For glibc.
         "-D__STDC_LIMIT_MACROS",
     ],
-    header_libs: ["libcutils_headers"],
+    header_libs: [
+        "libcutils_headers",
+        "gwp_asan_headers"
+    ],
     // Ensure that the tests exercise shadow call stack support and
     // the hint space PAC/BTI instructions.
     arch: {
@@ -571,6 +574,18 @@
     ],
 }
 
+cc_test_library {
+    name: "libBionicGwpAsanTests",
+    defaults: ["bionic_tests_defaults"],
+    srcs: [
+        "gwp_asan_test.cpp",
+    ],
+    include_dirs: [
+        "bionic/libc",
+    ],
+    static_libs: ["libbase"],
+}
+
 // -----------------------------------------------------------------------------
 // Fortify tests.
 // -----------------------------------------------------------------------------
@@ -735,6 +750,7 @@
         "libBionicStandardTests",
         "libBionicElfTlsTests",
         "libBionicFramePointerTests",
+        "libBionicGwpAsanTests",
         "libfortify1-tests-clang",
         "libfortify1-new-tests-clang",
         "libfortify2-tests-clang",
diff --git a/tests/gwp_asan_test.cpp b/tests/gwp_asan_test.cpp
new file mode 100644
index 0000000..b442f51
--- /dev/null
+++ b/tests/gwp_asan_test.cpp
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <gtest/gtest.h>
+#include <stdio.h>
+#include <string>
+
+#if defined(__BIONIC__)
+
+#include "gwp_asan/options.h"
+#include "platform/bionic/malloc.h"
+#include "utils.h"
+
+void RunGwpAsanTest(const char* test_name) {
+  ExecTestHelper eh;
+  eh.SetEnv({"GWP_ASAN_SAMPLE_RATE=1", "GWP_ASAN_PROCESS_SAMPLING=1", "GWP_ASAN_MAX_ALLOCS=40000",
+             nullptr});
+  std::string filter_arg = "--gtest_filter=";
+  filter_arg += test_name;
+  std::string exec(testing::internal::GetArgvs()[0]);
+  eh.SetArgs({exec.c_str(), "--gtest_also_run_disabled_tests", filter_arg.c_str()});
+  eh.Run([&]() { execve(exec.c_str(), eh.GetArgs(), eh.GetEnv()); },
+         /* expected_exit_status */ 0,
+         // |expected_output_regex|, ensure at least one test ran:
+         R"(\[  PASSED  \] [1-9]+0? test)");
+}
+
+// This file implements "torture testing" under GWP-ASan, where we sample every
+// single allocation. The upper limit for the number of GWP-ASan allocations in
+// the torture mode is is generally 40,000, so that svelte devices don't
+// explode, as this uses ~163MiB RAM (4KiB per live allocation).
+TEST(gwp_asan_integration, malloc_tests_under_torture) {
+  RunGwpAsanTest("malloc.*:-malloc.mallinfo*");
+}
+
+#endif  // defined(__BIONIC__)
diff --git a/tests/malloc_test.cpp b/tests/malloc_test.cpp
index f157ec4..8b8c90a 100644
--- a/tests/malloc_test.cpp
+++ b/tests/malloc_test.cpp
@@ -1010,18 +1010,6 @@
   AlignCheck();
 }
 
-// Force GWP-ASan on and verify all alignment checks still pass.
-TEST(malloc, align_check_gwp_asan) {
-#if defined(__BIONIC__)
-  bool force_init = true;
-  ASSERT_TRUE(android_mallopt(M_INITIALIZE_GWP_ASAN, &force_init, sizeof(force_init)));
-
-  AlignCheck();
-#else
-  GTEST_SKIP() << "bionic-only test";
-#endif
-}
-
 // Jemalloc doesn't pass this test right now, so leave it as disabled.
 TEST(malloc, DISABLED_alloc_after_fork) {
   // Both of these need to be a power of 2.
@@ -1371,17 +1359,24 @@
 #endif
 }
 
-TEST(android_mallopt, force_init_gwp_asan) {
 #if defined(__BIONIC__)
-  bool force_init = true;
-  ASSERT_TRUE(android_mallopt(M_INITIALIZE_GWP_ASAN, &force_init, sizeof(force_init)));
+using Action = android_mallopt_gwp_asan_options_t::Action;
+TEST(android_mallopt, DISABLED_multiple_enable_gwp_asan) {
+  android_mallopt_gwp_asan_options_t options;
+  options.program_name = "";  // Don't infer GWP-ASan options from sysprops.
+  options.desire = Action::DONT_TURN_ON_UNLESS_OVERRIDDEN;
+  // GWP-ASan should already be enabled. Trying to enable or disable it should
+  // always pass.
+  ASSERT_TRUE(android_mallopt(M_INITIALIZE_GWP_ASAN, &options, sizeof(options)));
+  options.desire = Action::TURN_ON_WITH_SAMPLING;
+  ASSERT_TRUE(android_mallopt(M_INITIALIZE_GWP_ASAN, &options, sizeof(options)));
+}
+#endif  // defined(__BIONIC__)
 
-  // Verify that trying to do the call again also passes no matter the
-  // value of force_init.
-  force_init = false;
-  ASSERT_TRUE(android_mallopt(M_INITIALIZE_GWP_ASAN, &force_init, sizeof(force_init)));
-  force_init = true;
-  ASSERT_TRUE(android_mallopt(M_INITIALIZE_GWP_ASAN, &force_init, sizeof(force_init)));
+TEST(android_mallopt, multiple_enable_gwp_asan) {
+#if defined(__BIONIC__)
+  // Always enable GWP-Asan, with default options.
+  RunGwpAsanTest("*.DISABLED_multiple_enable_gwp_asan");
 #else
   GTEST_SKIP() << "bionic extension";
 #endif
diff --git a/tests/utils.h b/tests/utils.h
index 284140a..296b6bf 100644
--- a/tests/utils.h
+++ b/tests/utils.h
@@ -270,6 +270,8 @@
   std::vector<const char*> env_;
   std::string output_;
 };
+
+void RunGwpAsanTest(const char* test_name);
 #endif
 
 class FdLeakChecker {