mirror of
https://github.com/yuzu-emu/breakpad.git
synced 2025-07-01 09:08:20 +00:00
f5123d7196
Added
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
to the beginning of all source files that didn't have it.
This ensures that configuration options are respected in all source
files. In particular, it ensures that the defines needed to fix Large
File System issues are set before including system headers.
More generally, it ensures consistency between the source files, and
avoids the possibility of ODR violations between source files that were
including config.h and source files that were not.
Process:
Ran
find . \( -name third_party -prune \) -o \( -name '.git*' -prune \) -o \( \( -name '*.cc' -o -name '*.c' \) -exec sed -i '0,/^#include/ s/^#include/#ifdef HAVE_CONFIG_H\n#include <config.h> \/\/ Must come first\n#endif\n\n#include/' {} + \)
and then manually fixed up src/common/linux/guid_creator.cc,
src/tools/solaris/dump_syms/testdata/dump_syms_regtest.cc,
src/tools/windows/dump_syms/testdata/dump_syms_regtest.cc,
src/common/stabs_reader.h, and src/common/linux/breakpad_getcontext.h.
BUG=google-breakpad:877
Fixed: google-breakpad:877
TEST=./configure && make && make check
TEST=Did the find/sed in ChromeOS's copy, ensured emerge-hana google-breakpad
worked and had fewer LFS violations.
TEST=Did the find/sed in Chrome's copy, ensured compiling hana, windows, linux, and
eve still worked (since Chrome doesn't used config.h)
Change-Id: I16cededbba0ea0c28e919b13243e35300999e799
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/4289676
Reviewed-by: Mike Frysinger <vapier@chromium.org>
718 lines
24 KiB
C++
718 lines
24 KiB
C++
// Copyright 2010 Google LLC
|
|
//
|
|
// 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.
|
|
// * Neither the name of Google LLC nor the names of its
|
|
// contributors may be used to endorse or promote products derived from
|
|
// this software without specific prior written permission.
|
|
//
|
|
// 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.
|
|
|
|
// exception_handler_test.cc: Unit tests for google_breakpad::ExceptionHandler
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h> // Must come first
|
|
#endif
|
|
|
|
#include <pthread.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/stat.h>
|
|
#include <unistd.h>
|
|
|
|
#include "breakpad_googletest_includes.h"
|
|
#include "client/mac/handler/exception_handler.h"
|
|
#include "common/linux/ignore_ret.h"
|
|
#include "common/mac/MachIPC.h"
|
|
#include "common/tests/auto_tempdir.h"
|
|
#include "google_breakpad/processor/minidump.h"
|
|
|
|
namespace google_breakpad {
|
|
// This acts as the log sink for INFO logging from the processor
|
|
// logging code. The logging output confuses XCode and makes it think
|
|
// there are unit test failures. testlogging.h handles the overriding.
|
|
std::ostringstream info_log;
|
|
}
|
|
|
|
namespace {
|
|
using std::string;
|
|
using google_breakpad::AutoTempDir;
|
|
using google_breakpad::ExceptionHandler;
|
|
using google_breakpad::MachPortSender;
|
|
using google_breakpad::MachReceiveMessage;
|
|
using google_breakpad::MachSendMessage;
|
|
using google_breakpad::Minidump;
|
|
using google_breakpad::MinidumpContext;
|
|
using google_breakpad::MinidumpException;
|
|
using google_breakpad::MinidumpMemoryList;
|
|
using google_breakpad::MinidumpMemoryRegion;
|
|
using google_breakpad::ReceivePort;
|
|
using testing::Test;
|
|
|
|
class ExceptionHandlerTest : public Test {
|
|
public:
|
|
void InProcessCrash(bool aborting);
|
|
AutoTempDir tempDir;
|
|
string lastDumpName;
|
|
};
|
|
|
|
static void Crasher() {
|
|
int* a = (int*)0x42;
|
|
|
|
fprintf(stdout, "Going to crash...\n");
|
|
fprintf(stdout, "A = %d", *a);
|
|
}
|
|
|
|
static void AbortCrasher() {
|
|
fprintf(stdout, "Going to crash...\n");
|
|
abort();
|
|
}
|
|
|
|
static void SoonToCrash(void(*crasher)()) {
|
|
crasher();
|
|
}
|
|
|
|
static bool MDCallback(const char* dump_dir, const char* file_name,
|
|
void* context, bool success) {
|
|
string path(dump_dir);
|
|
path.append("/");
|
|
path.append(file_name);
|
|
path.append(".dmp");
|
|
|
|
int fd = *reinterpret_cast<int*>(context);
|
|
IGNORE_RET(write(fd, path.c_str(), path.length() + 1));
|
|
close(fd);
|
|
exit(0);
|
|
// not reached
|
|
return true;
|
|
}
|
|
|
|
void ExceptionHandlerTest::InProcessCrash(bool aborting) {
|
|
// Give the child process a pipe to report back on.
|
|
int fds[2];
|
|
ASSERT_EQ(0, pipe(fds));
|
|
// Fork off a child process so it can crash.
|
|
pid_t pid = fork();
|
|
if (pid == 0) {
|
|
// In the child process.
|
|
close(fds[0]);
|
|
ExceptionHandler eh(tempDir.path(), NULL, MDCallback, &fds[1], true, NULL);
|
|
// crash
|
|
SoonToCrash(aborting ? &AbortCrasher : &Crasher);
|
|
// not reached
|
|
exit(1);
|
|
}
|
|
// In the parent process.
|
|
ASSERT_NE(-1, pid);
|
|
// Wait for the background process to return the minidump file.
|
|
close(fds[1]);
|
|
char minidump_file[PATH_MAX];
|
|
ssize_t nbytes = read(fds[0], minidump_file, sizeof(minidump_file));
|
|
ASSERT_NE(0, nbytes);
|
|
|
|
Minidump minidump(minidump_file);
|
|
ASSERT_TRUE(minidump.Read());
|
|
|
|
MinidumpException* exception = minidump.GetException();
|
|
ASSERT_TRUE(exception);
|
|
|
|
const MDRawExceptionStream* raw_exception = exception->exception();
|
|
ASSERT_TRUE(raw_exception);
|
|
|
|
if (aborting) {
|
|
EXPECT_EQ(MD_EXCEPTION_MAC_SOFTWARE,
|
|
raw_exception->exception_record.exception_code);
|
|
EXPECT_EQ(MD_EXCEPTION_CODE_MAC_ABORT,
|
|
raw_exception->exception_record.exception_flags);
|
|
} else {
|
|
EXPECT_EQ(MD_EXCEPTION_MAC_BAD_ACCESS,
|
|
raw_exception->exception_record.exception_code);
|
|
#if defined(__x86_64__)
|
|
EXPECT_EQ(MD_EXCEPTION_CODE_MAC_INVALID_ADDRESS,
|
|
raw_exception->exception_record.exception_flags);
|
|
#elif defined(__i386__)
|
|
EXPECT_EQ(MD_EXCEPTION_CODE_MAC_PROTECTION_FAILURE,
|
|
raw_exception->exception_record.exception_flags);
|
|
#endif
|
|
}
|
|
|
|
const MinidumpContext* context = exception->GetContext();
|
|
ASSERT_TRUE(context);
|
|
|
|
uint64_t instruction_pointer;
|
|
ASSERT_TRUE(context->GetInstructionPointer(&instruction_pointer));
|
|
|
|
// Ideally would like to sanity check that abort() is on the stack
|
|
// but that's hard.
|
|
MinidumpMemoryList* memory_list = minidump.GetMemoryList();
|
|
ASSERT_TRUE(memory_list);
|
|
MinidumpMemoryRegion* region =
|
|
memory_list->GetMemoryRegionForAddress(instruction_pointer);
|
|
EXPECT_TRUE(region);
|
|
|
|
// Child process should have exited with a zero status.
|
|
int ret;
|
|
ASSERT_EQ(pid, waitpid(pid, &ret, 0));
|
|
EXPECT_NE(0, WIFEXITED(ret));
|
|
EXPECT_EQ(0, WEXITSTATUS(ret));
|
|
}
|
|
|
|
TEST_F(ExceptionHandlerTest, InProcess) {
|
|
InProcessCrash(false);
|
|
}
|
|
|
|
TEST_F(ExceptionHandlerTest, InProcessAbort) {
|
|
InProcessCrash(true);
|
|
}
|
|
|
|
static bool DumpNameMDCallback(const char* dump_dir, const char* file_name,
|
|
void* context, bool success) {
|
|
ExceptionHandlerTest* self = reinterpret_cast<ExceptionHandlerTest*>(context);
|
|
if (dump_dir && file_name) {
|
|
self->lastDumpName = dump_dir;
|
|
self->lastDumpName += "/";
|
|
self->lastDumpName += file_name;
|
|
self->lastDumpName += ".dmp";
|
|
}
|
|
return true;
|
|
}
|
|
|
|
TEST_F(ExceptionHandlerTest, WriteMinidump) {
|
|
ExceptionHandler eh(tempDir.path(), NULL, DumpNameMDCallback, this, true,
|
|
NULL);
|
|
ASSERT_TRUE(eh.WriteMinidump());
|
|
|
|
// Ensure that minidump file exists and is > 0 bytes.
|
|
ASSERT_FALSE(lastDumpName.empty());
|
|
struct stat st;
|
|
ASSERT_EQ(0, stat(lastDumpName.c_str(), &st));
|
|
ASSERT_LT(0, st.st_size);
|
|
|
|
// The minidump should not contain an exception stream.
|
|
Minidump minidump(lastDumpName);
|
|
ASSERT_TRUE(minidump.Read());
|
|
|
|
MinidumpException* exception = minidump.GetException();
|
|
EXPECT_FALSE(exception);
|
|
}
|
|
|
|
TEST_F(ExceptionHandlerTest, WriteMinidumpWithException) {
|
|
ExceptionHandler eh(tempDir.path(), NULL, DumpNameMDCallback, this, true,
|
|
NULL);
|
|
ASSERT_TRUE(eh.WriteMinidump(true));
|
|
|
|
// Ensure that minidump file exists and is > 0 bytes.
|
|
ASSERT_FALSE(lastDumpName.empty());
|
|
struct stat st;
|
|
ASSERT_EQ(0, stat(lastDumpName.c_str(), &st));
|
|
ASSERT_LT(0, st.st_size);
|
|
|
|
// The minidump should contain an exception stream.
|
|
Minidump minidump(lastDumpName);
|
|
ASSERT_TRUE(minidump.Read());
|
|
|
|
MinidumpException* exception = minidump.GetException();
|
|
ASSERT_TRUE(exception);
|
|
const MDRawExceptionStream* raw_exception = exception->exception();
|
|
ASSERT_TRUE(raw_exception);
|
|
|
|
EXPECT_EQ(MD_EXCEPTION_MAC_BREAKPOINT,
|
|
raw_exception->exception_record.exception_code);
|
|
}
|
|
|
|
TEST_F(ExceptionHandlerTest, DumpChildProcess) {
|
|
const int kTimeoutMs = 2000;
|
|
// Create a mach port to receive the child task on.
|
|
char machPortName[128];
|
|
sprintf(machPortName, "ExceptionHandlerTest.%d", getpid());
|
|
ReceivePort parent_recv_port(machPortName);
|
|
|
|
// Give the child process a pipe to block on.
|
|
int fds[2];
|
|
ASSERT_EQ(0, pipe(fds));
|
|
|
|
// Fork off a child process to dump.
|
|
pid_t pid = fork();
|
|
if (pid == 0) {
|
|
// In the child process
|
|
close(fds[1]);
|
|
|
|
// Send parent process the task and thread ports.
|
|
MachSendMessage child_message(0);
|
|
child_message.AddDescriptor(mach_task_self());
|
|
child_message.AddDescriptor(mach_thread_self());
|
|
|
|
MachPortSender child_sender(machPortName);
|
|
if (child_sender.SendMessage(child_message, kTimeoutMs) != KERN_SUCCESS)
|
|
exit(1);
|
|
|
|
// Wait for the parent process.
|
|
uint8_t data;
|
|
read(fds[0], &data, 1);
|
|
exit(0);
|
|
}
|
|
// In the parent process.
|
|
ASSERT_NE(-1, pid);
|
|
close(fds[0]);
|
|
|
|
// Read the child's task and thread ports.
|
|
MachReceiveMessage child_message;
|
|
ASSERT_EQ(KERN_SUCCESS,
|
|
parent_recv_port.WaitForMessage(&child_message, kTimeoutMs));
|
|
mach_port_t child_task = child_message.GetTranslatedPort(0);
|
|
mach_port_t child_thread = child_message.GetTranslatedPort(1);
|
|
ASSERT_NE((mach_port_t)MACH_PORT_NULL, child_task);
|
|
ASSERT_NE((mach_port_t)MACH_PORT_NULL, child_thread);
|
|
|
|
// Write a minidump of the child process.
|
|
bool result = ExceptionHandler::WriteMinidumpForChild(child_task,
|
|
child_thread,
|
|
tempDir.path(),
|
|
DumpNameMDCallback,
|
|
this);
|
|
ASSERT_EQ(true, result);
|
|
|
|
// Ensure that minidump file exists and is > 0 bytes.
|
|
ASSERT_FALSE(lastDumpName.empty());
|
|
struct stat st;
|
|
ASSERT_EQ(0, stat(lastDumpName.c_str(), &st));
|
|
ASSERT_LT(0, st.st_size);
|
|
|
|
// Unblock child process
|
|
uint8_t data = 1;
|
|
IGNORE_RET(write(fds[1], &data, 1));
|
|
|
|
// Child process should have exited with a zero status.
|
|
int ret;
|
|
ASSERT_EQ(pid, waitpid(pid, &ret, 0));
|
|
EXPECT_NE(0, WIFEXITED(ret));
|
|
EXPECT_EQ(0, WEXITSTATUS(ret));
|
|
}
|
|
|
|
// Test that memory around the instruction pointer is written
|
|
// to the dump as a MinidumpMemoryRegion.
|
|
TEST_F(ExceptionHandlerTest, InstructionPointerMemory) {
|
|
// Give the child process a pipe to report back on.
|
|
int fds[2];
|
|
ASSERT_EQ(0, pipe(fds));
|
|
|
|
// These are defined here so the parent can use them to check the
|
|
// data from the minidump afterwards.
|
|
const uint32_t kMemorySize = 256; // bytes
|
|
const int kOffset = kMemorySize / 2;
|
|
// This crashes with SIGILL on x86/x86-64/arm.
|
|
const unsigned char instructions[] = { 0xff, 0xff, 0xff, 0xff };
|
|
|
|
pid_t pid = fork();
|
|
if (pid == 0) {
|
|
close(fds[0]);
|
|
ExceptionHandler eh(tempDir.path(), NULL, MDCallback, &fds[1], true, NULL);
|
|
// Get some executable memory.
|
|
char* memory =
|
|
reinterpret_cast<char*>(mmap(NULL,
|
|
kMemorySize,
|
|
PROT_READ | PROT_WRITE | PROT_EXEC,
|
|
MAP_PRIVATE | MAP_ANON,
|
|
-1,
|
|
0));
|
|
if (!memory)
|
|
exit(0);
|
|
|
|
// Write some instructions that will crash. Put them in the middle
|
|
// of the block of memory, because the minidump should contain 128
|
|
// bytes on either side of the instruction pointer.
|
|
memcpy(memory + kOffset, instructions, sizeof(instructions));
|
|
|
|
// Now execute the instructions, which should crash.
|
|
typedef void (*void_function)(void);
|
|
void_function memory_function =
|
|
reinterpret_cast<void_function>(memory + kOffset);
|
|
memory_function();
|
|
// not reached
|
|
exit(1);
|
|
}
|
|
// In the parent process.
|
|
ASSERT_NE(-1, pid);
|
|
close(fds[1]);
|
|
|
|
// Wait for the background process to return the minidump file.
|
|
close(fds[1]);
|
|
char minidump_file[PATH_MAX];
|
|
ssize_t nbytes = read(fds[0], minidump_file, sizeof(minidump_file));
|
|
ASSERT_NE(0, nbytes);
|
|
// Ensure that minidump file exists and is > 0 bytes.
|
|
struct stat st;
|
|
ASSERT_EQ(0, stat(minidump_file, &st));
|
|
ASSERT_LT(0, st.st_size);
|
|
|
|
// Child process should have exited with a zero status.
|
|
int ret;
|
|
ASSERT_EQ(pid, waitpid(pid, &ret, 0));
|
|
EXPECT_NE(0, WIFEXITED(ret));
|
|
EXPECT_EQ(0, WEXITSTATUS(ret));
|
|
|
|
// Read the minidump. Locate the exception record and the
|
|
// memory list, and then ensure that there is a memory region
|
|
// in the memory list that covers the instruction pointer from
|
|
// the exception record.
|
|
Minidump minidump(minidump_file);
|
|
ASSERT_TRUE(minidump.Read());
|
|
|
|
MinidumpException* exception = minidump.GetException();
|
|
MinidumpMemoryList* memory_list = minidump.GetMemoryList();
|
|
ASSERT_TRUE(exception);
|
|
ASSERT_TRUE(memory_list);
|
|
ASSERT_NE((unsigned int)0, memory_list->region_count());
|
|
|
|
MinidumpContext* context = exception->GetContext();
|
|
ASSERT_TRUE(context);
|
|
|
|
uint64_t instruction_pointer;
|
|
ASSERT_TRUE(context->GetInstructionPointer(&instruction_pointer));
|
|
|
|
MinidumpMemoryRegion* region =
|
|
memory_list->GetMemoryRegionForAddress(instruction_pointer);
|
|
EXPECT_TRUE(region);
|
|
|
|
EXPECT_EQ(kMemorySize, region->GetSize());
|
|
const uint8_t* bytes = region->GetMemory();
|
|
ASSERT_TRUE(bytes);
|
|
|
|
uint8_t prefix_bytes[kOffset];
|
|
uint8_t suffix_bytes[kMemorySize - kOffset - sizeof(instructions)];
|
|
memset(prefix_bytes, 0, sizeof(prefix_bytes));
|
|
memset(suffix_bytes, 0, sizeof(suffix_bytes));
|
|
EXPECT_TRUE(memcmp(bytes, prefix_bytes, sizeof(prefix_bytes)) == 0);
|
|
EXPECT_TRUE(memcmp(bytes + kOffset, instructions, sizeof(instructions)) == 0);
|
|
EXPECT_TRUE(memcmp(bytes + kOffset + sizeof(instructions),
|
|
suffix_bytes, sizeof(suffix_bytes)) == 0);
|
|
}
|
|
|
|
// Test that the memory region around the instruction pointer is
|
|
// bounded correctly on the low end.
|
|
TEST_F(ExceptionHandlerTest, InstructionPointerMemoryMinBound) {
|
|
// Give the child process a pipe to report back on.
|
|
int fds[2];
|
|
ASSERT_EQ(0, pipe(fds));
|
|
|
|
// These are defined here so the parent can use them to check the
|
|
// data from the minidump afterwards.
|
|
const uint32_t kMemorySize = 256; // bytes
|
|
const int kOffset = 0;
|
|
// This crashes with SIGILL on x86/x86-64/arm.
|
|
const unsigned char instructions[] = { 0xff, 0xff, 0xff, 0xff };
|
|
|
|
pid_t pid = fork();
|
|
if (pid == 0) {
|
|
close(fds[0]);
|
|
ExceptionHandler eh(tempDir.path(), NULL, MDCallback, &fds[1], true, NULL);
|
|
// Get some executable memory.
|
|
char* memory =
|
|
reinterpret_cast<char*>(mmap(NULL,
|
|
kMemorySize,
|
|
PROT_READ | PROT_WRITE | PROT_EXEC,
|
|
MAP_PRIVATE | MAP_ANON,
|
|
-1,
|
|
0));
|
|
if (!memory)
|
|
exit(0);
|
|
|
|
// Write some instructions that will crash. Put them at the start
|
|
// of the block of memory, to ensure that the memory bounding
|
|
// works properly.
|
|
memcpy(memory + kOffset, instructions, sizeof(instructions));
|
|
|
|
// Now execute the instructions, which should crash.
|
|
typedef void (*void_function)(void);
|
|
void_function memory_function =
|
|
reinterpret_cast<void_function>(memory + kOffset);
|
|
memory_function();
|
|
// not reached
|
|
exit(1);
|
|
}
|
|
// In the parent process.
|
|
ASSERT_NE(-1, pid);
|
|
close(fds[1]);
|
|
|
|
// Wait for the background process to return the minidump file.
|
|
close(fds[1]);
|
|
char minidump_file[PATH_MAX];
|
|
ssize_t nbytes = read(fds[0], minidump_file, sizeof(minidump_file));
|
|
ASSERT_NE(0, nbytes);
|
|
// Ensure that minidump file exists and is > 0 bytes.
|
|
struct stat st;
|
|
ASSERT_EQ(0, stat(minidump_file, &st));
|
|
ASSERT_LT(0, st.st_size);
|
|
|
|
// Child process should have exited with a zero status.
|
|
int ret;
|
|
ASSERT_EQ(pid, waitpid(pid, &ret, 0));
|
|
EXPECT_NE(0, WIFEXITED(ret));
|
|
EXPECT_EQ(0, WEXITSTATUS(ret));
|
|
|
|
// Read the minidump. Locate the exception record and the
|
|
// memory list, and then ensure that there is a memory region
|
|
// in the memory list that covers the instruction pointer from
|
|
// the exception record.
|
|
Minidump minidump(minidump_file);
|
|
ASSERT_TRUE(minidump.Read());
|
|
|
|
MinidumpException* exception = minidump.GetException();
|
|
MinidumpMemoryList* memory_list = minidump.GetMemoryList();
|
|
ASSERT_TRUE(exception);
|
|
ASSERT_TRUE(memory_list);
|
|
ASSERT_NE((unsigned int)0, memory_list->region_count());
|
|
|
|
MinidumpContext* context = exception->GetContext();
|
|
ASSERT_TRUE(context);
|
|
|
|
uint64_t instruction_pointer;
|
|
ASSERT_TRUE(context->GetInstructionPointer(&instruction_pointer));
|
|
|
|
MinidumpMemoryRegion* region =
|
|
memory_list->GetMemoryRegionForAddress(instruction_pointer);
|
|
EXPECT_TRUE(region);
|
|
|
|
EXPECT_EQ(kMemorySize / 2, region->GetSize());
|
|
const uint8_t* bytes = region->GetMemory();
|
|
ASSERT_TRUE(bytes);
|
|
|
|
uint8_t suffix_bytes[kMemorySize / 2 - sizeof(instructions)];
|
|
memset(suffix_bytes, 0, sizeof(suffix_bytes));
|
|
EXPECT_TRUE(memcmp(bytes + kOffset, instructions, sizeof(instructions)) == 0);
|
|
EXPECT_TRUE(memcmp(bytes + kOffset + sizeof(instructions),
|
|
suffix_bytes, sizeof(suffix_bytes)) == 0);
|
|
}
|
|
|
|
// Test that the memory region around the instruction pointer is
|
|
// bounded correctly on the high end.
|
|
TEST_F(ExceptionHandlerTest, InstructionPointerMemoryMaxBound) {
|
|
// Give the child process a pipe to report back on.
|
|
int fds[2];
|
|
ASSERT_EQ(0, pipe(fds));
|
|
|
|
// These are defined here so the parent can use them to check the
|
|
// data from the minidump afterwards.
|
|
// Use 4k here because the OS will hand out a single page even
|
|
// if a smaller size is requested, and this test wants to
|
|
// test the upper bound of the memory range.
|
|
const uint32_t kMemorySize = 4096; // bytes
|
|
// This crashes with SIGILL on x86/x86-64/arm.
|
|
const unsigned char instructions[] = { 0xff, 0xff, 0xff, 0xff };
|
|
const int kOffset = kMemorySize - sizeof(instructions);
|
|
|
|
pid_t pid = fork();
|
|
if (pid == 0) {
|
|
close(fds[0]);
|
|
ExceptionHandler eh(tempDir.path(), NULL, MDCallback, &fds[1], true, NULL);
|
|
// Get some executable memory.
|
|
char* memory =
|
|
reinterpret_cast<char*>(mmap(NULL,
|
|
kMemorySize,
|
|
PROT_READ | PROT_WRITE | PROT_EXEC,
|
|
MAP_PRIVATE | MAP_ANON,
|
|
-1,
|
|
0));
|
|
if (!memory)
|
|
exit(0);
|
|
|
|
// Write some instructions that will crash. Put them at the start
|
|
// of the block of memory, to ensure that the memory bounding
|
|
// works properly.
|
|
memcpy(memory + kOffset, instructions, sizeof(instructions));
|
|
|
|
// Now execute the instructions, which should crash.
|
|
typedef void (*void_function)(void);
|
|
void_function memory_function =
|
|
reinterpret_cast<void_function>(memory + kOffset);
|
|
memory_function();
|
|
// not reached
|
|
exit(1);
|
|
}
|
|
// In the parent process.
|
|
ASSERT_NE(-1, pid);
|
|
close(fds[1]);
|
|
|
|
// Wait for the background process to return the minidump file.
|
|
close(fds[1]);
|
|
char minidump_file[PATH_MAX];
|
|
ssize_t nbytes = read(fds[0], minidump_file, sizeof(minidump_file));
|
|
ASSERT_NE(0, nbytes);
|
|
// Ensure that minidump file exists and is > 0 bytes.
|
|
struct stat st;
|
|
ASSERT_EQ(0, stat(minidump_file, &st));
|
|
ASSERT_LT(0, st.st_size);
|
|
|
|
// Child process should have exited with a zero status.
|
|
int ret;
|
|
ASSERT_EQ(pid, waitpid(pid, &ret, 0));
|
|
EXPECT_NE(0, WIFEXITED(ret));
|
|
EXPECT_EQ(0, WEXITSTATUS(ret));
|
|
|
|
// Read the minidump. Locate the exception record and the
|
|
// memory list, and then ensure that there is a memory region
|
|
// in the memory list that covers the instruction pointer from
|
|
// the exception record.
|
|
Minidump minidump(minidump_file);
|
|
ASSERT_TRUE(minidump.Read());
|
|
|
|
MinidumpException* exception = minidump.GetException();
|
|
MinidumpMemoryList* memory_list = minidump.GetMemoryList();
|
|
ASSERT_TRUE(exception);
|
|
ASSERT_TRUE(memory_list);
|
|
ASSERT_NE((unsigned int)0, memory_list->region_count());
|
|
|
|
MinidumpContext* context = exception->GetContext();
|
|
ASSERT_TRUE(context);
|
|
|
|
uint64_t instruction_pointer;
|
|
ASSERT_TRUE(context->GetInstructionPointer(&instruction_pointer));
|
|
|
|
MinidumpMemoryRegion* region =
|
|
memory_list->GetMemoryRegionForAddress(instruction_pointer);
|
|
EXPECT_TRUE(region);
|
|
|
|
const size_t kPrefixSize = 128; // bytes
|
|
EXPECT_EQ(kPrefixSize + sizeof(instructions), region->GetSize());
|
|
const uint8_t* bytes = region->GetMemory();
|
|
ASSERT_TRUE(bytes);
|
|
|
|
uint8_t prefix_bytes[kPrefixSize];
|
|
memset(prefix_bytes, 0, sizeof(prefix_bytes));
|
|
EXPECT_TRUE(memcmp(bytes, prefix_bytes, sizeof(prefix_bytes)) == 0);
|
|
EXPECT_TRUE(memcmp(bytes + kPrefixSize,
|
|
instructions, sizeof(instructions)) == 0);
|
|
}
|
|
|
|
// Ensure that an extra memory block doesn't get added when the
|
|
// instruction pointer is not in mapped memory.
|
|
TEST_F(ExceptionHandlerTest, InstructionPointerMemoryNullPointer) {
|
|
// Give the child process a pipe to report back on.
|
|
int fds[2];
|
|
ASSERT_EQ(0, pipe(fds));
|
|
|
|
pid_t pid = fork();
|
|
if (pid == 0) {
|
|
close(fds[0]);
|
|
ExceptionHandler eh(tempDir.path(), NULL, MDCallback, &fds[1], true, NULL);
|
|
// Try calling a NULL pointer.
|
|
typedef void (*void_function)(void);
|
|
// Volatile markings are needed to keep Clang from generating invalid
|
|
// opcodes. See http://crbug.com/498354 for details.
|
|
volatile void_function memory_function =
|
|
reinterpret_cast<void_function>(NULL);
|
|
memory_function();
|
|
// not reached
|
|
exit(1);
|
|
}
|
|
// In the parent process.
|
|
ASSERT_NE(-1, pid);
|
|
close(fds[1]);
|
|
|
|
// Wait for the background process to return the minidump file.
|
|
close(fds[1]);
|
|
char minidump_file[PATH_MAX];
|
|
ssize_t nbytes = read(fds[0], minidump_file, sizeof(minidump_file));
|
|
ASSERT_NE(0, nbytes);
|
|
// Ensure that minidump file exists and is > 0 bytes.
|
|
struct stat st;
|
|
ASSERT_EQ(0, stat(minidump_file, &st));
|
|
ASSERT_LT(0, st.st_size);
|
|
|
|
// Child process should have exited with a zero status.
|
|
int ret;
|
|
ASSERT_EQ(pid, waitpid(pid, &ret, 0));
|
|
EXPECT_NE(0, WIFEXITED(ret));
|
|
EXPECT_EQ(0, WEXITSTATUS(ret));
|
|
|
|
// Read the minidump. Locate the exception record and the
|
|
// memory list, and then ensure that there is only one memory region
|
|
// in the memory list (the thread memory from the single thread).
|
|
Minidump minidump(minidump_file);
|
|
ASSERT_TRUE(minidump.Read());
|
|
|
|
MinidumpException* exception = minidump.GetException();
|
|
MinidumpMemoryList* memory_list = minidump.GetMemoryList();
|
|
ASSERT_TRUE(exception);
|
|
ASSERT_TRUE(memory_list);
|
|
ASSERT_EQ((unsigned int)1, memory_list->region_count());
|
|
}
|
|
|
|
static void* Junk(void*) {
|
|
sleep(1000000);
|
|
return NULL;
|
|
}
|
|
|
|
// Test that the memory list gets written correctly when multiple
|
|
// threads are running.
|
|
TEST_F(ExceptionHandlerTest, MemoryListMultipleThreads) {
|
|
// Give the child process a pipe to report back on.
|
|
int fds[2];
|
|
ASSERT_EQ(0, pipe(fds));
|
|
|
|
pid_t pid = fork();
|
|
if (pid == 0) {
|
|
close(fds[0]);
|
|
ExceptionHandler eh(tempDir.path(), NULL, MDCallback, &fds[1], true, NULL);
|
|
|
|
// Run an extra thread so >2 memory regions will be written.
|
|
pthread_t junk_thread;
|
|
if (pthread_create(&junk_thread, NULL, Junk, NULL) == 0)
|
|
pthread_detach(junk_thread);
|
|
|
|
// Just crash.
|
|
Crasher();
|
|
|
|
// not reached
|
|
exit(1);
|
|
}
|
|
// In the parent process.
|
|
ASSERT_NE(-1, pid);
|
|
close(fds[1]);
|
|
|
|
// Wait for the background process to return the minidump file.
|
|
close(fds[1]);
|
|
char minidump_file[PATH_MAX];
|
|
ssize_t nbytes = read(fds[0], minidump_file, sizeof(minidump_file));
|
|
ASSERT_NE(0, nbytes);
|
|
// Ensure that minidump file exists and is > 0 bytes.
|
|
struct stat st;
|
|
ASSERT_EQ(0, stat(minidump_file, &st));
|
|
ASSERT_LT(0, st.st_size);
|
|
|
|
// Child process should have exited with a zero status.
|
|
int ret;
|
|
ASSERT_EQ(pid, waitpid(pid, &ret, 0));
|
|
EXPECT_NE(0, WIFEXITED(ret));
|
|
EXPECT_EQ(0, WEXITSTATUS(ret));
|
|
|
|
// Read the minidump, and verify that the memory list can be read.
|
|
Minidump minidump(minidump_file);
|
|
ASSERT_TRUE(minidump.Read());
|
|
|
|
MinidumpMemoryList* memory_list = minidump.GetMemoryList();
|
|
ASSERT_TRUE(memory_list);
|
|
// Verify that there are three memory regions:
|
|
// one per thread, and one for the instruction pointer memory.
|
|
ASSERT_EQ((unsigned int)3, memory_list->region_count());
|
|
}
|
|
|
|
}
|