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platform_system_core
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Merge "Change the 64 bit map address format."

This commit is contained in:
Christopher Ferris 2015-06-03 18:53:38 +00:00 committed by Gerrit Code Review
parent 59be5aedbf 862fe02919
commit 493cdcbb77
14 changed files with 979 additions and 45 deletions
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53
debuggerd/Android.mk
View File

@ -75,46 +75,55 @@ LOCAL_MULTILIB := both
include $(BUILD_EXECUTABLE)
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
debuggerd_test_src_files := \
utility.cpp \
test/dump_maps_test.cpp \
test/dump_memory_test.cpp \
test/elf_fake.cpp \
test/log_fake.cpp \
test/property_fake.cpp \
test/ptrace_fake.cpp \
test/selinux_fake.cpp \
LOCAL_MODULE := debuggerd_test
LOCAL_SHARED_LIBRARIES := \
debuggerd_shared_libraries := \
libbacktrace \
libbase \
libcutils \
LOCAL_C_INCLUDES += $(LOCAL_PATH)/test
LOCAL_CPPFLAGS := $(common_cppflags)
debuggerd_c_includes := \
$(LOCAL_PATH)/test \
debuggerd_cpp_flags := \
$(common_cppflags) \
-Wno-missing-field-initializers \
# Only build the host tests on linux.
ifeq ($(HOST_OS),linux)
include $(CLEAR_VARS)
LOCAL_MODULE := debuggerd_test
LOCAL_SRC_FILES := $(debuggerd_test_src_files)
LOCAL_SHARED_LIBRARIES := $(debuggerd_shared_libraries)
LOCAL_C_INCLUDES := $(debuggerd_c_includes)
LOCAL_CPPFLAGS := $(debuggerd_cpp_flags)
LOCAL_MODULE_STEM_32 := $(LOCAL_MODULE)32
LOCAL_MODULE_STEM_64 := $(LOCAL_MODULE)64
LOCAL_MULTILIB := both
include $(BUILD_HOST_NATIVE_TEST)
endif
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
utility.cpp \
test/dump_memory_test.cpp \
test/log_fake.cpp \
LOCAL_MODULE := debuggerd_test
LOCAL_SHARED_LIBRARIES := \
libbacktrace \
libbase \
LOCAL_C_INCLUDES += $(LOCAL_PATH)/test
LOCAL_CPPFLAGS := $(common_cppflags)
LOCAL_SRC_FILES := $(debuggerd_test_src_files)
LOCAL_SHARED_LIBRARIES := $(debuggerd_shared_libraries)
LOCAL_C_INCLUDES := $(debuggerd_c_includes)
LOCAL_CPPFLAGS := $(debuggerd_cpp_flags)
LOCAL_MODULE_STEM_32 := $(LOCAL_MODULE)32
LOCAL_MODULE_STEM_64 := $(LOCAL_MODULE)64
LOCAL_MULTILIB := both
include $(BUILD_NATIVE_TEST)

4
debuggerd/test/BacktraceMock.h
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@ -32,6 +32,10 @@ class BacktraceMapMock : public BacktraceMap {
public:
BacktraceMapMock() : BacktraceMap(0) {}
virtual ~BacktraceMapMock() {}
void AddMap(backtrace_map_t& map) {
maps_.push_back(map);
}
};

571
debuggerd/test/dump_maps_test.cpp Normal file
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@ -0,0 +1,571 @@
/*
* Copyright (C) 2015 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 <stdlib.h>
#include <memory>
#include <string>
#include <gtest/gtest.h>
#include <base/file.h>
#include "utility.h"
#include "BacktraceMock.h"
#include "elf_fake.h"
#include "host_signal_fixup.h"
#include "log_fake.h"
#include "ptrace_fake.h"
// In order to test this code, we need to include the tombstone.cpp code.
// Including it, also allows us to override the ptrace function.
#define ptrace ptrace_fake
#include "tombstone.cpp"
void dump_registers(log_t*, pid_t) {
}
void dump_memory_and_code(log_t*, Backtrace*) {
}
void dump_backtrace_to_log(Backtrace*, log_t*, char const*) {
}
class DumpMapsTest : public ::testing::Test {
protected:
virtual void SetUp() {
map_mock_.reset(new BacktraceMapMock());
backtrace_mock_.reset(new BacktraceMock(map_mock_.get()));
char tmp_file[256];
const char data_template[] = "/data/local/tmp/debuggerd_memory_testXXXXXX";
memcpy(tmp_file, data_template, sizeof(data_template));
int tombstone_fd = mkstemp(tmp_file);
if (tombstone_fd == -1) {
const char tmp_template[] = "/tmp/debuggerd_memory_testXXXXXX";
memcpy(tmp_file, tmp_template, sizeof(tmp_template));
tombstone_fd = mkstemp(tmp_file);
if (tombstone_fd == -1) {
abort();
}
}
if (unlink(tmp_file) == -1) {
abort();
}
log_.tfd = tombstone_fd;
log_.amfd = -1;
log_.crashed_tid = 12;
log_.current_tid = 12;
log_.should_retrieve_logcat = false;
resetLogs();
elf_set_fake_build_id("");
siginfo_t si;
si.si_signo = SIGPIPE;
ptrace_set_fake_getsiginfo(si);
}
virtual void TearDown() {
if (log_.tfd >= 0) {
close(log_.tfd);
}
}
std::unique_ptr<BacktraceMapMock> map_mock_;
std::unique_ptr<BacktraceMock> backtrace_mock_;
log_t log_;
};
TEST_F(DumpMapsTest, single_map) {
backtrace_map_t map;
#if defined(__LP64__)
map.start = 0x123456789abcd000UL;
map.end = 0x123456789abdf000UL;
#else
map.start = 0x1234000;
map.end = 0x1235000;
#endif
map_mock_->AddMap(map);
dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);
std::string tombstone_contents;
ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
const char* expected_dump = \
"\nmemory map:\n"
#if defined(__LP64__)
" 12345678'9abcd000-12345678'9abdefff --- 0 12000\n";
#else
" 01234000-01234fff --- 0 1000\n";
#endif
ASSERT_STREQ(expected_dump, tombstone_contents.c_str());
// Verify that the log buf is empty, and no error messages.
ASSERT_STREQ("", getFakeLogBuf().c_str());
ASSERT_STREQ("", getFakeLogPrint().c_str());
}
TEST_F(DumpMapsTest, single_map_elf_build_id) {
backtrace_map_t map;
#if defined(__LP64__)
map.start = 0x123456789abcd000UL;
map.end = 0x123456789abdf000UL;
#else
map.start = 0x1234000;
map.end = 0x1235000;
#endif
map.flags = PROT_READ;
map.name = "/system/lib/libfake.so";
map_mock_->AddMap(map);
elf_set_fake_build_id("abcdef1234567890abcdef1234567890");
dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);
std::string tombstone_contents;
ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
const char* expected_dump = \
"\nmemory map:\n"
#if defined(__LP64__)
" 12345678'9abcd000-12345678'9abdefff r-- 0 12000 /system/lib/libfake.so (BuildId: abcdef1234567890abcdef1234567890)\n";
#else
" 01234000-01234fff r-- 0 1000 /system/lib/libfake.so (BuildId: abcdef1234567890abcdef1234567890)\n";
#endif
ASSERT_STREQ(expected_dump, tombstone_contents.c_str());
// Verify that the log buf is empty, and no error messages.
ASSERT_STREQ("", getFakeLogBuf().c_str());
ASSERT_STREQ("", getFakeLogPrint().c_str());
}
// Even though build id is present, it should not be printed in either of
// these cases.
TEST_F(DumpMapsTest, single_map_no_build_id) {
backtrace_map_t map;
#if defined(__LP64__)
map.start = 0x123456789abcd000UL;
map.end = 0x123456789abdf000UL;
#else
map.start = 0x1234000;
map.end = 0x1235000;
#endif
map.flags = PROT_WRITE;
map_mock_->AddMap(map);
map.name = "/system/lib/libfake.so";
map_mock_->AddMap(map);
elf_set_fake_build_id("abcdef1234567890abcdef1234567890");
dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);
std::string tombstone_contents;
ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
const char* expected_dump = \
"\nmemory map:\n"
#if defined(__LP64__)
" 12345678'9abcd000-12345678'9abdefff -w- 0 12000\n"
" 12345678'9abcd000-12345678'9abdefff -w- 0 12000 /system/lib/libfake.so\n";
#else
" 01234000-01234fff -w- 0 1000\n"
" 01234000-01234fff -w- 0 1000 /system/lib/libfake.so\n";
#endif
ASSERT_STREQ(expected_dump, tombstone_contents.c_str());
// Verify that the log buf is empty, and no error messages.
ASSERT_STREQ("", getFakeLogBuf().c_str());
ASSERT_STREQ("", getFakeLogPrint().c_str());
}
TEST_F(DumpMapsTest, multiple_maps) {
backtrace_map_t map;
map.start = 0xa234000;
map.end = 0xa235000;
map_mock_->AddMap(map);
map.start = 0xa334000;
map.end = 0xa335000;
map.offset = 0xf000;
map.flags = PROT_READ;
map_mock_->AddMap(map);
map.start = 0xa434000;
map.end = 0xa435000;
map.offset = 0x1000;
map.load_base = 0xd000;
map.flags = PROT_WRITE;
map_mock_->AddMap(map);
map.start = 0xa534000;
map.end = 0xa535000;
map.offset = 0x3000;
map.load_base = 0x2000;
map.flags = PROT_EXEC;
map_mock_->AddMap(map);
map.start = 0xa634000;
map.end = 0xa635000;
map.offset = 0;
map.load_base = 0;
map.flags = PROT_READ | PROT_WRITE | PROT_EXEC;
map.name = "/system/lib/fake.so";
map_mock_->AddMap(map);
dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);
std::string tombstone_contents;
ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
const char* expected_dump = \
"\nmemory map:\n"
#if defined(__LP64__)
" 00000000'0a234000-00000000'0a234fff --- 0 1000\n"
" 00000000'0a334000-00000000'0a334fff r-- f000 1000\n"
" 00000000'0a434000-00000000'0a434fff -w- 1000 1000 (load base 0xd000)\n"
" 00000000'0a534000-00000000'0a534fff --x 3000 1000 (load base 0x2000)\n"
" 00000000'0a634000-00000000'0a634fff rwx 0 1000 /system/lib/fake.so\n";
#else
" 0a234000-0a234fff --- 0 1000\n"
" 0a334000-0a334fff r-- f000 1000\n"
" 0a434000-0a434fff -w- 1000 1000 (load base 0xd000)\n"
" 0a534000-0a534fff --x 3000 1000 (load base 0x2000)\n"
" 0a634000-0a634fff rwx 0 1000 /system/lib/fake.so\n";
#endif
ASSERT_STREQ(expected_dump, tombstone_contents.c_str());
// Verify that the log buf is empty, and no error messages.
ASSERT_STREQ("", getFakeLogBuf().c_str());
ASSERT_STREQ("", getFakeLogPrint().c_str());
}
TEST_F(DumpMapsTest, multiple_maps_fault_address_before) {
backtrace_map_t map;
map.start = 0xa434000;
map.end = 0xa435000;
map.offset = 0x1000;
map.load_base = 0xd000;
map.flags = PROT_WRITE;
map_mock_->AddMap(map);
map.start = 0xa534000;
map.end = 0xa535000;
map.offset = 0x3000;
map.load_base = 0x2000;
map.flags = PROT_EXEC;
map_mock_->AddMap(map);
map.start = 0xa634000;
map.end = 0xa635000;
map.offset = 0;
map.load_base = 0;
map.flags = PROT_READ | PROT_WRITE | PROT_EXEC;
map.name = "/system/lib/fake.so";
map_mock_->AddMap(map);
siginfo_t si;
si.si_signo = SIGBUS;
si.si_addr = reinterpret_cast<void*>(0x1000);
ptrace_set_fake_getsiginfo(si);
dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);
std::string tombstone_contents;
ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
const char* expected_dump = \
"\nmemory map: (fault address prefixed with --->)\n"
#if defined(__LP64__)
"--->Fault address falls at 00000000'00001000 before any mapped regions\n"
" 00000000'0a434000-00000000'0a434fff -w- 1000 1000 (load base 0xd000)\n"
" 00000000'0a534000-00000000'0a534fff --x 3000 1000 (load base 0x2000)\n"
" 00000000'0a634000-00000000'0a634fff rwx 0 1000 /system/lib/fake.so\n";
#else
"--->Fault address falls at 00001000 before any mapped regions\n"
" 0a434000-0a434fff -w- 1000 1000 (load base 0xd000)\n"
" 0a534000-0a534fff --x 3000 1000 (load base 0x2000)\n"
" 0a634000-0a634fff rwx 0 1000 /system/lib/fake.so\n";
#endif
ASSERT_STREQ(expected_dump, tombstone_contents.c_str());
// Verify that the log buf is empty, and no error messages.
ASSERT_STREQ("", getFakeLogBuf().c_str());
ASSERT_STREQ("", getFakeLogPrint().c_str());
}
TEST_F(DumpMapsTest, multiple_maps_fault_address_between) {
backtrace_map_t map;
map.start = 0xa434000;
map.end = 0xa435000;
map.offset = 0x1000;
map.load_base = 0xd000;
map.flags = PROT_WRITE;
map_mock_->AddMap(map);
map.start = 0xa534000;
map.end = 0xa535000;
map.offset = 0x3000;
map.load_base = 0x2000;
map.flags = PROT_EXEC;
map_mock_->AddMap(map);
map.start = 0xa634000;
map.end = 0xa635000;
map.offset = 0;
map.load_base = 0;
map.flags = PROT_READ | PROT_WRITE | PROT_EXEC;
map.name = "/system/lib/fake.so";
map_mock_->AddMap(map);
siginfo_t si;
si.si_signo = SIGBUS;
si.si_addr = reinterpret_cast<void*>(0xa533000);
ptrace_set_fake_getsiginfo(si);
dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);
std::string tombstone_contents;
ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
const char* expected_dump = \
"\nmemory map: (fault address prefixed with --->)\n"
#if defined(__LP64__)
" 00000000'0a434000-00000000'0a434fff -w- 1000 1000 (load base 0xd000)\n"
"--->Fault address falls at 00000000'0a533000 between mapped regions\n"
" 00000000'0a534000-00000000'0a534fff --x 3000 1000 (load base 0x2000)\n"
" 00000000'0a634000-00000000'0a634fff rwx 0 1000 /system/lib/fake.so\n";
#else
" 0a434000-0a434fff -w- 1000 1000 (load base 0xd000)\n"
"--->Fault address falls at 0a533000 between mapped regions\n"
" 0a534000-0a534fff --x 3000 1000 (load base 0x2000)\n"
" 0a634000-0a634fff rwx 0 1000 /system/lib/fake.so\n";
#endif
ASSERT_STREQ(expected_dump, tombstone_contents.c_str());
// Verify that the log buf is empty, and no error messages.
ASSERT_STREQ("", getFakeLogBuf().c_str());
ASSERT_STREQ("", getFakeLogPrint().c_str());
}
TEST_F(DumpMapsTest, multiple_maps_fault_address_in_map) {
backtrace_map_t map;
map.start = 0xa434000;
map.end = 0xa435000;
map.offset = 0x1000;
map.load_base = 0xd000;
map.flags = PROT_WRITE;
map_mock_->AddMap(map);
map.start = 0xa534000;
map.end = 0xa535000;
map.offset = 0x3000;
map.load_base = 0x2000;
map.flags = PROT_EXEC;
map_mock_->AddMap(map);
map.start = 0xa634000;
map.end = 0xa635000;
map.offset = 0;
map.load_base = 0;
map.flags = PROT_READ | PROT_WRITE | PROT_EXEC;
map.name = "/system/lib/fake.so";
map_mock_->AddMap(map);
siginfo_t si;
si.si_signo = SIGBUS;
si.si_addr = reinterpret_cast<void*>(0xa534040);
ptrace_set_fake_getsiginfo(si);
dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);
std::string tombstone_contents;
ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
const char* expected_dump = \
"\nmemory map: (fault address prefixed with --->)\n"
#if defined(__LP64__)
" 00000000'0a434000-00000000'0a434fff -w- 1000 1000 (load base 0xd000)\n"
"--->00000000'0a534000-00000000'0a534fff --x 3000 1000 (load base 0x2000)\n"
" 00000000'0a634000-00000000'0a634fff rwx 0 1000 /system/lib/fake.so\n";
#else
" 0a434000-0a434fff -w- 1000 1000 (load base 0xd000)\n"
"--->0a534000-0a534fff --x 3000 1000 (load base 0x2000)\n"
" 0a634000-0a634fff rwx 0 1000 /system/lib/fake.so\n";
#endif
ASSERT_STREQ(expected_dump, tombstone_contents.c_str());
// Verify that the log buf is empty, and no error messages.
ASSERT_STREQ("", getFakeLogBuf().c_str());
ASSERT_STREQ("", getFakeLogPrint().c_str());
}
TEST_F(DumpMapsTest, multiple_maps_fault_address_after) {
backtrace_map_t map;
map.start = 0xa434000;
map.end = 0xa435000;
map.offset = 0x1000;
map.load_base = 0xd000;
map.flags = PROT_WRITE;
map_mock_->AddMap(map);
map.start = 0xa534000;
map.end = 0xa535000;
map.offset = 0x3000;
map.load_base = 0x2000;
map.flags = PROT_EXEC;
map_mock_->AddMap(map);
map.start = 0xa634000;
map.end = 0xa635000;
map.offset = 0;
map.load_base = 0;
map.flags = PROT_READ | PROT_WRITE | PROT_EXEC;
map.name = "/system/lib/fake.so";
map_mock_->AddMap(map);
siginfo_t si;
si.si_signo = SIGBUS;
#if defined(__LP64__)
si.si_addr = reinterpret_cast<void*>(0x12345a534040UL);
#else
si.si_addr = reinterpret_cast<void*>(0xf534040UL);
#endif
ptrace_set_fake_getsiginfo(si);
dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);
std::string tombstone_contents;
ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
const char* expected_dump = \
"\nmemory map: (fault address prefixed with --->)\n"
#if defined(__LP64__)
" 00000000'0a434000-00000000'0a434fff -w- 1000 1000 (load base 0xd000)\n"
" 00000000'0a534000-00000000'0a534fff --x 3000 1000 (load base 0x2000)\n"
" 00000000'0a634000-00000000'0a634fff rwx 0 1000 /system/lib/fake.so\n"
"--->Fault address falls at 00001234'5a534040 after any mapped regions\n";
#else
" 0a434000-0a434fff -w- 1000 1000 (load base 0xd000)\n"
" 0a534000-0a534fff --x 3000 1000 (load base 0x2000)\n"
" 0a634000-0a634fff rwx 0 1000 /system/lib/fake.so\n"
"--->Fault address falls at 0f534040 after any mapped regions\n";
#endif
ASSERT_STREQ(expected_dump, tombstone_contents.c_str());
// Verify that the log buf is empty, and no error messages.
ASSERT_STREQ("", getFakeLogBuf().c_str());
ASSERT_STREQ("", getFakeLogPrint().c_str());
}
TEST_F(DumpMapsTest, multiple_maps_getsiginfo_fail) {
backtrace_map_t map;
map.start = 0xa434000;
map.end = 0xa435000;
map.offset = 0x1000;
map.load_base = 0xd000;
map.flags = PROT_WRITE;
map_mock_->AddMap(map);
siginfo_t si;
si.si_signo = 0;
ptrace_set_fake_getsiginfo(si);
dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);
std::string tombstone_contents;
ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
const char* expected_dump = \
"Cannot get siginfo for 100: Bad address\n"
"\nmemory map:\n"
#if defined(__LP64__)
" 00000000'0a434000-00000000'0a434fff -w- 1000 1000 (load base 0xd000)\n";
#else
" 0a434000-0a434fff -w- 1000 1000 (load base 0xd000)\n";
#endif
ASSERT_STREQ(expected_dump, tombstone_contents.c_str());
// Verify that the log buf is empty, and no error messages.
ASSERT_STREQ("DEBUG Cannot get siginfo for 100: Bad address\n",
getFakeLogBuf().c_str());
ASSERT_STREQ("", getFakeLogPrint().c_str());
}
TEST_F(DumpMapsTest, multiple_maps_check_signal_has_si_addr) {
backtrace_map_t map;
map.start = 0xa434000;
map.end = 0xa435000;
map.flags = PROT_WRITE;
map_mock_->AddMap(map);
for (int i = 1; i < 255; i++) {
ASSERT_TRUE(ftruncate(log_.tfd, 0) == 0);
ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
siginfo_t si;
si.si_signo = i;
si.si_addr = reinterpret_cast<void*>(0x1000);
ptrace_set_fake_getsiginfo(si);
dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);
std::string tombstone_contents;
ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
bool has_addr = false;
switch (si.si_signo) {
case SIGBUS:
case SIGFPE:
case SIGILL:
case SIGSEGV:
case SIGTRAP:
has_addr = true;
break;
}
const char* expected_addr_dump = \
"\nmemory map: (fault address prefixed with --->)\n"
#if defined(__LP64__)
"--->Fault address falls at 00000000'00001000 before any mapped regions\n"
" 00000000'0a434000-00000000'0a434fff -w- 0 1000\n";
#else
"--->Fault address falls at 00001000 before any mapped regions\n"
" 0a434000-0a434fff -w- 0 1000\n";
#endif
const char* expected_dump = \
"\nmemory map:\n"
#if defined(__LP64__)
" 00000000'0a434000-00000000'0a434fff -w- 0 1000\n";
#else
" 0a434000-0a434fff -w- 0 1000\n";
#endif
if (has_addr) {
ASSERT_STREQ(expected_addr_dump, tombstone_contents.c_str())
<< "Signal " << si.si_signo << " expected to include an address.";
} else {
ASSERT_STREQ(expected_dump, tombstone_contents.c_str())
<< "Signal " << si.si_signo << " is not expected to include an address.";
}
// Verify that the log buf is empty, and no error messages.
ASSERT_STREQ("", getFakeLogBuf().c_str());
ASSERT_STREQ("", getFakeLogPrint().c_str());
}
}

35
debuggerd/test/elf_fake.cpp Normal file
View File

@ -0,0 +1,35 @@
/*
* Copyright (C) 2015 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>
#include <string>
class Backtrace;
std::string g_build_id;
void elf_set_fake_build_id(const std::string& build_id) {
g_build_id = build_id;
}
bool elf_get_build_id(Backtrace*, uintptr_t, std::string* build_id) {
if (g_build_id != "") {
*build_id = g_build_id;
return true;
}
return false;
}

24
debuggerd/test/elf_fake.h Normal file
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@ -0,0 +1,24 @@
/*
* Copyright (C) 2015 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.
*/
#ifndef _DEBUGGERD_TEST_ELF_FAKE_H
#define _DEBUGGERD_TEST_ELF_FAKE_H
#include <string>
void elf_set_fake_build_id(const std::string&);
#endif // _DEBUGGERD_TEST_ELF_FAKE_H

65
debuggerd/test/host_signal_fixup.h Normal file
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@ -0,0 +1,65 @@
/*
* Copyright (C) 2015 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.
*/
#ifndef _DEBUGGERD_TEST_HOST_SIGNAL_FIXUP_H
#define _DEBUGGERD_TEST_HOST_SIGNAL_FIXUP_H
#include <signal.h>
#if !defined(__BIONIC__)
// In order to compile parts of debuggerd for the host, we need to
// define these values.
#if !defined(NSIGILL)
#define NSIGILL ILL_BADSTK
#endif
#if !defined(BUS_MCEERR_AR)
#define BUS_MCEERR_AR 4
#endif
#if !defined(BUS_MCEERR_AO)
#define BUS_MCEERR_AO 5
#endif
#if !defined(NSIGBUS)
#define NSIGBUS BUS_MCEERR_AO
#endif
#if !defined(NSIGFPE)
#define NSIGFPE FPE_FLTSUB
#endif
#if !defined(NSIGSEGV)
#define NSIGSEGV SEGV_ACCERR
#endif
#if !defined(TRAP_BRANCH)
#define TRAP_BRANCH 3
#endif
#if !defined(TRAP_HWBKPT)
#define TRAP_HWBKPT 4
#endif
#if !defined(NSIGTRAP)
#define NSIGTRAP TRAP_HWBKPT
#endif
#if !defined(SI_DETHREAD)
#define SI_DETHREAD -7
#endif
#endif
#endif // _DEBUGGERD_TEST_HOST_SIGNAL_FIXUP_H

44
debuggerd/test/log_fake.cpp
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@ -19,6 +19,13 @@
#include <string>
#include <base/stringprintf.h>
#include <log/log.h>
#include <log/logger.h>
// Forward declarations.
class Backtrace;
struct EventTagMap;
struct AndroidLogEntry;
std::string g_fake_log_buf;
@ -29,6 +36,14 @@ void resetLogs() {
g_fake_log_print = "";
}
std::string getFakeLogBuf() {
return g_fake_log_buf;
}
std::string getFakeLogPrint() {
return g_fake_log_print;
}
extern "C" int __android_log_buf_write(int, int, const char* tag, const char* msg) {
g_fake_log_buf += tag;
g_fake_log_buf += ' ';
@ -36,10 +51,6 @@ extern "C" int __android_log_buf_write(int, int, const char* tag, const char* ms
return 1;
}
std::string getFakeLogBuf() {
return g_fake_log_buf;
}
extern "C" int __android_log_print(int, const char* tag, const char* fmt, ...) {
g_fake_log_print += tag;
g_fake_log_print += ' ';
@ -54,6 +65,27 @@ extern "C" int __android_log_print(int, const char* tag, const char* fmt, ...) {
return 1;
}
std::string getFakeLogPrint() {
return g_fake_log_print;
extern "C" log_id_t android_name_to_log_id(const char*) {
return LOG_ID_SYSTEM;
}
extern "C" struct logger_list* android_logger_list_open(log_id_t, int, unsigned int, pid_t) {
return nullptr;
}
extern "C" int android_logger_list_read(struct logger_list*, struct log_msg*) {
return 0;
}
extern "C" EventTagMap* android_openEventTagMap(const char*) {
return nullptr;
}
extern "C" int android_log_processBinaryLogBuffer(
struct logger_entry*,
AndroidLogEntry*, const EventTagMap*, char*, int) {
return 0;
}
extern "C" void android_logger_list_free(struct logger_list*) {
}

45
debuggerd/test/property_fake.cpp Normal file
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@ -0,0 +1,45 @@
/*
* Copyright (C) 2015 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 <string.h>
#include <string>
#include <unordered_map>
#include <sys/system_properties.h>
std::unordered_map<std::string, std::string> g_properties;
extern "C" int property_set(const char* name, const char* value) {
if (g_properties.count(name) != 0) {
g_properties.erase(name);
}
g_properties[name] = value;
return 0;
}
extern "C" int property_get(const char* key, char* value, const char* default_value) {
if (g_properties.count(key) == 0) {
if (default_value == nullptr) {
return 0;
}
strncpy(value, default_value, PROP_VALUE_MAX-1);
} else {
strncpy(value, g_properties[key].c_str(), PROP_VALUE_MAX-1);
}
value[PROP_VALUE_MAX-1] = '\0';
return strlen(value);
}

53
debuggerd/test/ptrace_fake.cpp Normal file
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@ -0,0 +1,53 @@
/*
* Copyright (C) 2015 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 <errno.h>
#include <signal.h>
#include <stdarg.h>
#include <sys/ptrace.h>
#include <string>
#include "ptrace_fake.h"
siginfo_t g_fake_si = {.si_signo = 0};
void ptrace_set_fake_getsiginfo(const siginfo_t& si) {
g_fake_si = si;
}
#if !defined(__BIONIC__)
extern "C" long ptrace_fake(enum __ptrace_request request, ...) {
#else
extern "C" long ptrace_fake(int request, ...) {
#endif
if (request == PTRACE_GETSIGINFO) {
if (g_fake_si.si_signo == 0) {
errno = EFAULT;
return -1;
}
va_list ap;
va_start(ap, request);
va_arg(ap, int);
va_arg(ap, int);
siginfo_t* si = va_arg(ap, siginfo*);
va_end(ap);
*si = g_fake_si;
return 0;
}
return -1;
}

24
debuggerd/test/ptrace_fake.h Normal file
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@ -0,0 +1,24 @@
/*
* Copyright (C) 2015 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.
*/
#ifndef _DEBUGGERD_TEST_PTRACE_FAKE_H
#define _DEBUGGERD_TEST_PTRACE_FAKE_H
#include <signal.h>
void ptrace_set_fake_getsiginfo(const siginfo_t&);
#endif // _DEBUGGERD_TEST_PTRACE_FAKE_H

19
debuggerd/test/selinux_fake.cpp Normal file
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@ -0,0 +1,19 @@
/*
* Copyright (C) 2015 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.
*/
extern "C" int selinux_android_restorecon(const char*, unsigned int) {
return 0;
}

38
debuggerd/test/sys/system_properties.h Normal file
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@ -0,0 +1,38 @@
/*
* Copyright (C) 2015 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.
*/
#ifndef _DEBUGGERD_TEST_SYS_SYSTEM_PROPERTIES_H
#define _DEBUGGERD_TEST_SYS_SYSTEM_PROPERTIES_H
// This is just enough to get the property code to compile on
// the host.
#define PROP_NAME_MAX 32
#define PROP_VALUE_MAX 92
#endif // _DEBUGGERD_TEST_SYS_SYSTEM_PROPERTIES_H

37
debuggerd/tombstone.cpp
View File

@ -317,16 +317,28 @@ static void dump_stack(Backtrace* backtrace, log_t* log) {
}
}
static std::string get_addr_string(uintptr_t addr) {
std::string addr_str;
#if defined(__LP64__)
addr_str = android::base::StringPrintf("%08x'%08x",
static_cast<uint32_t>(addr >> 32),
static_cast<uint32_t>(addr & 0xffffffff));
#else
addr_str = android::base::StringPrintf("%08x", addr);
#endif
return addr_str;
}
static void dump_all_maps(Backtrace* backtrace, BacktraceMap* map, log_t* log, pid_t tid) {
bool print_fault_address_marker = false;
uintptr_t addr = 0;
siginfo_t si;
memset(&si, 0, sizeof(si));
if (ptrace(PTRACE_GETSIGINFO, tid, 0, &si)) {
_LOG(log, logtype::ERROR, "cannot get siginfo for %d: %s\n", tid, strerror(errno));
} else {
if (ptrace(PTRACE_GETSIGINFO, tid, 0, &si) != -1) {
print_fault_address_marker = signal_has_si_addr(si.si_signo);
addr = reinterpret_cast<uintptr_t>(si.si_addr);
} else {
_LOG(log, logtype::ERROR, "Cannot get siginfo for %d: %s\n", tid, strerror(errno));
}
_LOG(log, logtype::MAPS, "\n");
@ -335,8 +347,8 @@ static void dump_all_maps(Backtrace* backtrace, BacktraceMap* map, log_t* log, p
} else {
_LOG(log, logtype::MAPS, "memory map: (fault address prefixed with --->)\n");
if (map->begin() != map->end() && addr < map->begin()->start) {
_LOG(log, logtype::MAPS, "--->Fault address falls at %" PRIPTR " before any mapped regions\n",
addr);
_LOG(log, logtype::MAPS, "--->Fault address falls at %s before any mapped regions\n",
get_addr_string(addr).c_str());
print_fault_address_marker = false;
}
}
@ -346,15 +358,15 @@ static void dump_all_maps(Backtrace* backtrace, BacktraceMap* map, log_t* log, p
line = " ";
if (print_fault_address_marker) {
if (addr < it->start) {
_LOG(log, logtype::MAPS, "--->Fault address falls at %" PRIPTR " between mapped regions\n",
addr);
_LOG(log, logtype::MAPS, "--->Fault address falls at %s between mapped regions\n",
get_addr_string(addr).c_str());
print_fault_address_marker = false;
} else if (addr >= it->start && addr < it->end) {
line = "--->";
print_fault_address_marker = false;
}
}
line += android::base::StringPrintf("%" PRIPTR "-%" PRIPTR " ", it->start, it->end - 1);
line += get_addr_string(it->start) + '-' + get_addr_string(it->end - 1) + ' ';
if (it->flags & PROT_READ) {
line += 'r';
} else {
@ -372,7 +384,9 @@ static void dump_all_maps(Backtrace* backtrace, BacktraceMap* map, log_t* log, p
}
line += android::base::StringPrintf(" %8" PRIxPTR " %8" PRIxPTR,
it->offset, it->end - it->start);
bool space_needed = true;
if (it->name.length() > 0) {
space_needed = false;
line += " " + it->name;
std::string build_id;
if ((it->flags & PROT_READ) && elf_get_build_id(backtrace, it->start, &build_id)) {
@ -380,13 +394,16 @@ static void dump_all_maps(Backtrace* backtrace, BacktraceMap* map, log_t* log, p
}
}
if (it->load_base != 0) {
if (space_needed) {
line += ' ';
}
line += android::base::StringPrintf(" (load base 0x%" PRIxPTR ")", it->load_base);
}
_LOG(log, logtype::MAPS, "%s\n", line.c_str());
}
if (print_fault_address_marker) {
_LOG(log, logtype::MAPS, "--->Fault address falls at %" PRIPTR " after any mapped regions\n",
addr);
_LOG(log, logtype::MAPS, "--->Fault address falls at %s after any mapped regions\n",
get_addr_string(addr).c_str());
}
}

12
include/backtrace/BacktraceMap.h
View File

@ -33,13 +33,11 @@
#include <string>
struct backtrace_map_t {
backtrace_map_t(): start(0), end(0), flags(0) {}
uintptr_t start;
uintptr_t end;
uintptr_t offset;
uintptr_t load_base;
int flags;
uintptr_t start = 0;
uintptr_t end = 0;
uintptr_t offset = 0;
uintptr_t load_base = 0;
int flags = 0;
std::string name;
};