diff --git a/libunwindstack/Elf.cpp b/libunwindstack/Elf.cpp
index 4723606..56a0679 100644
--- a/libunwindstack/Elf.cpp
+++ b/libunwindstack/Elf.cpp
@@ -194,26 +194,26 @@
   return true;
 }
 
-void Elf::GetInfo(Memory* memory, bool* valid, uint64_t* size) {
+bool Elf::GetInfo(Memory* memory, uint64_t* size) {
   if (!IsValidElf(memory)) {
-    *valid = false;
-    return;
+    return false;
   }
   *size = 0;
-  *valid = true;
 
-  // Now read the section header information.
   uint8_t class_type;
   if (!memory->ReadFully(EI_CLASS, &class_type, 1)) {
-    return;
+    return false;
   }
+
+  // Get the maximum size of the elf data from the header.
   if (class_type == ELFCLASS32) {
     ElfInterface32::GetMaxSize(memory, size);
   } else if (class_type == ELFCLASS64) {
     ElfInterface64::GetMaxSize(memory, size);
   } else {
-    *valid = false;
+    return false;
   }
+  return true;
 }
 
 bool Elf::IsValidPc(uint64_t pc) {
diff --git a/libunwindstack/MapInfo.cpp b/libunwindstack/MapInfo.cpp
index 64005ae..52b7535 100644
--- a/libunwindstack/MapInfo.cpp
+++ b/libunwindstack/MapInfo.cpp
@@ -53,10 +53,8 @@
     return nullptr;
   }
 
-  bool valid;
   uint64_t max_size;
-  Elf::GetInfo(memory.get(), &valid, &max_size);
-  if (!valid) {
+  if (!Elf::GetInfo(memory.get(), &max_size)) {
     // Init as if the whole file is an elf.
     if (memory->Init(name, 0)) {
       elf_offset = offset;
@@ -109,11 +107,7 @@
   // first part of the elf file. This is done if the linker rosegment
   // option is used.
   std::unique_ptr<MemoryRange> memory(new MemoryRange(process_memory, start, end - start, 0));
-  bool valid;
-  uint64_t max_size;
-  Elf::GetInfo(memory.get(), &valid, &max_size);
-  if (valid) {
-    // Valid elf, we are done.
+  if (Elf::IsValidElf(memory.get())) {
     return memory.release();
   }
 
diff --git a/libunwindstack/Unwinder.cpp b/libunwindstack/Unwinder.cpp
index 099cc9e..ee1cd1a 100644
--- a/libunwindstack/Unwinder.cpp
+++ b/libunwindstack/Unwinder.cpp
@@ -190,6 +190,12 @@
         FillInDexFrame();
         // Clear the dex pc so that we don't repeat this frame later.
         regs_->set_dex_pc(0);
+
+        // Make sure there is enough room for the real frame.
+        if (frames_.size() == max_frames_) {
+          last_error_.code = ERROR_MAX_FRAMES_EXCEEDED;
+          break;
+        }
       }
 
       FillInFrame(map_info, elf, rel_pc, step_pc, pc_adjustment);
diff --git a/libunwindstack/include/unwindstack/Elf.h b/libunwindstack/include/unwindstack/Elf.h
index f4cdbda..9af859d 100644
--- a/libunwindstack/include/unwindstack/Elf.h
+++ b/libunwindstack/include/unwindstack/Elf.h
@@ -94,7 +94,7 @@
 
   static bool IsValidElf(Memory* memory);
 
-  static void GetInfo(Memory* memory, bool* valid, uint64_t* size);
+  static bool GetInfo(Memory* memory, uint64_t* size);
 
   static uint64_t GetLoadBias(Memory* memory);
 
diff --git a/libunwindstack/tests/UnwinderTest.cpp b/libunwindstack/tests/UnwinderTest.cpp
index 4369030..831d3b5 100644
--- a/libunwindstack/tests/UnwinderTest.cpp
+++ b/libunwindstack/tests/UnwinderTest.cpp
@@ -946,6 +946,33 @@
   EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
 }
 
+TEST_F(UnwinderTest, dex_pc_max_frames) {
+  ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
+  regs_.set_pc(0x1000);
+  regs_.set_sp(0x10000);
+  regs_.FakeSetDexPc(0xa3400);
+
+  Unwinder unwinder(1, &maps_, &regs_, process_memory_);
+  unwinder.Unwind();
+  EXPECT_EQ(ERROR_MAX_FRAMES_EXCEEDED, unwinder.LastErrorCode());
+
+  ASSERT_EQ(1U, unwinder.NumFrames());
+
+  auto* frame = &unwinder.frames()[0];
+  EXPECT_EQ(0U, frame->num);
+  EXPECT_EQ(0x400U, frame->rel_pc);
+  EXPECT_EQ(0xa3400U, frame->pc);
+  EXPECT_EQ(0x10000U, frame->sp);
+  EXPECT_EQ("", frame->function_name);
+  EXPECT_EQ(0U, frame->function_offset);
+  EXPECT_EQ("/fake/fake.vdex", frame->map_name);
+  EXPECT_EQ(0U, frame->map_offset);
+  EXPECT_EQ(0xa3000U, frame->map_start);
+  EXPECT_EQ(0xa4000U, frame->map_end);
+  EXPECT_EQ(0U, frame->map_load_bias);
+  EXPECT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, frame->map_flags);
+}
+
 // Verify format frame code.
 TEST_F(UnwinderTest, format_frame_static) {
   FrameData frame;