Check that dex pc is in a valid map.
Add new unit tests for dex pc being non-zero.
Bug: 73004673
Test: Ran unit tests.
Test: Ran art 137-cfi test on host for interpreter.
Change-Id: I09bbf96d0ed65fc1e5896e4ab2bc67867e3b7fdb
diff --git a/libunwindstack/Unwinder.cpp b/libunwindstack/Unwinder.cpp
index 6119ee0..644bfa8 100644
--- a/libunwindstack/Unwinder.cpp
+++ b/libunwindstack/Unwinder.cpp
@@ -54,13 +54,18 @@
frame->sp = regs_->sp();
MapInfo* info = maps_->Find(dex_pc);
- frame->map_start = info->start;
- frame->map_end = info->end;
- frame->map_offset = info->offset;
- frame->map_load_bias = info->load_bias;
- frame->map_flags = info->flags;
- frame->map_name = info->name;
- frame->rel_pc = dex_pc - info->start;
+ if (info != nullptr) {
+ frame->map_start = info->start;
+ frame->map_end = info->end;
+ frame->map_offset = info->offset;
+ frame->map_load_bias = info->load_bias;
+ frame->map_flags = info->flags;
+ frame->map_name = info->name;
+ frame->rel_pc = dex_pc - info->start;
+ } else {
+ frame->rel_pc = dex_pc;
+ return;
+ }
#if !defined(NO_LIBDEXFILE_SUPPORT)
if (dex_files_ == nullptr) {
diff --git a/libunwindstack/include/unwindstack/Unwinder.h b/libunwindstack/include/unwindstack/Unwinder.h
index e8af8b4..ebe7b0a 100644
--- a/libunwindstack/include/unwindstack/Unwinder.h
+++ b/libunwindstack/include/unwindstack/Unwinder.h
@@ -45,14 +45,14 @@
uint64_t sp;
std::string function_name;
- uint64_t function_offset;
+ uint64_t function_offset = 0;
std::string map_name;
- uint64_t map_offset;
- uint64_t map_start;
- uint64_t map_end;
- uint64_t map_load_bias;
- int map_flags;
+ uint64_t map_offset = 0;
+ uint64_t map_start = 0;
+ uint64_t map_end = 0;
+ uint64_t map_load_bias = 0;
+ int map_flags = 0;
};
class Unwinder {
diff --git a/libunwindstack/tests/RegsFake.h b/libunwindstack/tests/RegsFake.h
index 8f7d913..cd7f2ff 100644
--- a/libunwindstack/tests/RegsFake.h
+++ b/libunwindstack/tests/RegsFake.h
@@ -56,6 +56,7 @@
void FakeSetArch(ArchEnum arch) { fake_arch_ = arch; }
void FakeSetPc(uint64_t pc) { fake_pc_ = pc; }
void FakeSetSp(uint64_t sp) { fake_sp_ = sp; }
+ void FakeSetDexPc(uint64_t dex_pc) { dex_pc_ = dex_pc; }
void FakeSetReturnAddress(uint64_t return_address) { fake_return_address_ = return_address; }
void FakeSetReturnAddressValid(bool valid) { fake_return_address_valid_ = valid; }
diff --git a/libunwindstack/tests/UnwinderTest.cpp b/libunwindstack/tests/UnwinderTest.cpp
index 45cf907..09c6e04 100644
--- a/libunwindstack/tests/UnwinderTest.cpp
+++ b/libunwindstack/tests/UnwinderTest.cpp
@@ -98,6 +98,10 @@
info = new MapInfo(0x53000, 0x54000, 0, PROT_READ | PROT_WRITE, "/fake/fake.oat");
maps_.FakeAddMapInfo(info);
+ info = new MapInfo(0xa3000, 0xa4000, 0, PROT_READ | PROT_WRITE | PROT_EXEC, "/fake/fake.vdex");
+ info->load_bias = 0;
+ maps_.FakeAddMapInfo(info);
+
process_memory_.reset(new MemoryFake);
}
@@ -666,6 +670,88 @@
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
+TEST_F(UnwinderTest, dex_pc_in_map) {
+ ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
+ regs_.FakeSetPc(0x1000);
+ regs_.FakeSetSp(0x10000);
+ regs_.FakeSetDexPc(0xa3400);
+
+ Unwinder unwinder(64, &maps_, ®s_, process_memory_);
+ unwinder.Unwind();
+ EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
+
+ ASSERT_EQ(2U, 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);
+
+ frame = &unwinder.frames()[1];
+ EXPECT_EQ(1U, frame->num);
+ EXPECT_EQ(0U, frame->rel_pc);
+ EXPECT_EQ(0x1000U, frame->pc);
+ EXPECT_EQ(0x10000U, frame->sp);
+ EXPECT_EQ("Frame0", frame->function_name);
+ EXPECT_EQ(0U, frame->function_offset);
+ EXPECT_EQ("/system/fake/libc.so", frame->map_name);
+ EXPECT_EQ(0U, frame->map_offset);
+ EXPECT_EQ(0x1000U, frame->map_start);
+ EXPECT_EQ(0x8000U, frame->map_end);
+ EXPECT_EQ(0U, frame->map_load_bias);
+ EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
+}
+
+TEST_F(UnwinderTest, dex_pc_not_in_map) {
+ ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
+ regs_.FakeSetPc(0x1000);
+ regs_.FakeSetSp(0x10000);
+ regs_.FakeSetDexPc(0x50000);
+
+ Unwinder unwinder(64, &maps_, ®s_, process_memory_);
+ unwinder.Unwind();
+ EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
+
+ ASSERT_EQ(2U, unwinder.NumFrames());
+
+ auto* frame = &unwinder.frames()[0];
+ EXPECT_EQ(0U, frame->num);
+ EXPECT_EQ(0x50000U, frame->rel_pc);
+ EXPECT_EQ(0x50000U, frame->pc);
+ EXPECT_EQ(0x10000U, frame->sp);
+ EXPECT_EQ("", frame->function_name);
+ EXPECT_EQ(0U, frame->function_offset);
+ EXPECT_EQ("", frame->map_name);
+ EXPECT_EQ(0U, frame->map_offset);
+ EXPECT_EQ(0U, frame->map_start);
+ EXPECT_EQ(0U, frame->map_end);
+ EXPECT_EQ(0U, frame->map_load_bias);
+ EXPECT_EQ(0, frame->map_flags);
+
+ frame = &unwinder.frames()[1];
+ EXPECT_EQ(1U, frame->num);
+ EXPECT_EQ(0U, frame->rel_pc);
+ EXPECT_EQ(0x1000U, frame->pc);
+ EXPECT_EQ(0x10000U, frame->sp);
+ EXPECT_EQ("Frame0", frame->function_name);
+ EXPECT_EQ(0U, frame->function_offset);
+ EXPECT_EQ("/system/fake/libc.so", frame->map_name);
+ EXPECT_EQ(0U, frame->map_offset);
+ EXPECT_EQ(0x1000U, frame->map_start);
+ EXPECT_EQ(0x8000U, frame->map_end);
+ EXPECT_EQ(0U, frame->map_load_bias);
+ EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
+}
+
// Verify format frame code.
TEST_F(UnwinderTest, format_frame_static) {
FrameData frame;