commit c4c767736f371656af7e34c04a76a3b208b6946a
author Florian Mayer <fmayer@google.com> Thu Dec 12 06:28:47 2024 -0800
committer Florian Mayer <fmayer@google.com> Thu Dec 12 06:41:50 2024 -0800
tree 3f3c9fdd97ecc34d8c86d145ce9cea9fc0c1cb62
parent 6f4c51d7c9a66c62fa8b893d34103c5cae9739b9

Tests for unwinding and sigaltstack on thread stack

Test: atest android_unsafe_frame_pointer_chase
Bug: 318869521
Change-Id: I0f9646edb60b3328882383ad142b8135343e86bc

tests/android_unsafe_frame_pointer_chase_test.cpp

diff --git a/tests/android_unsafe_frame_pointer_chase_test.cpp b/tests/android_unsafe_frame_pointer_chase_test.cpp
index 7fa50e1..409cfab 100644
--- a/tests/android_unsafe_frame_pointer_chase_test.cpp
+++ b/tests/android_unsafe_frame_pointer_chase_test.cpp
@@ -124,6 +124,7 @@
   sigaction(SIGRTMIN, &s, nullptr);
 
   raise(SIGRTMIN);
+  sigaltstack(nullptr, nullptr);
   return nullptr;
 }
 
@@ -155,4 +156,25 @@
   munmap(stacks, kStackSize * 2);
 }
 
+static void* SigaltstackOnCallerStack(void*) {
+  char altstack[kStackSize];
+  SignalBacktraceThread(altstack);
+  EXPECT_TRUE(g_handler_called);
+  EXPECT_EQ(nullptr, g_handler_tester_result);
+  g_handler_called = false;
+  return nullptr;
+}
+
+TEST(android_unsafe_frame_pointer_chase, sigaltstack_on_main_thread) {
+  SigaltstackOnCallerStack(nullptr);
+}
+
+TEST(android_unsafe_frame_pointer_chase, sigaltstack_on_pthread) {
+  pthread_t t;
+  ASSERT_EQ(0, pthread_create(&t, nullptr, SigaltstackOnCallerStack, nullptr));
+  void* retval;
+  ASSERT_EQ(0, pthread_join(t, &retval));
+  EXPECT_EQ(nullptr, retval);
+}
+
 #endif // __BIONIC__