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[FancyZones] Crash on launch: fix exception handler (#14609)

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* fix stacktrace logging

* init logger before exception handler

* wchar check
This commit is contained in:
Seraphima Zykova 2021-11-23 21:41:10 +03:00 committed by GitHub
parent 8743c2329e
commit bd0db76e31
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 76 additions and 51 deletions
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124
src/common/utils/UnhandledExceptionHandler_x64.h
View File

@ -9,10 +9,7 @@
#include "winapi_error.h"
#include "../logger/logger.h"
static IMAGEHLP_SYMBOL64* pSymbol = (IMAGEHLP_SYMBOL64*)malloc(sizeof(IMAGEHLP_SYMBOL64) + MAX_PATH * sizeof(TCHAR));
static IMAGEHLP_LINE64 line;
static BOOLEAN processingException = FALSE;
static CHAR modulePath[MAX_PATH];
static inline const char* exceptionDescription(const DWORD& code)
{
@ -64,15 +61,15 @@ static inline const char* exceptionDescription(const DWORD& code)
}
/* Returns the index of the last backslash in the file path */
inline int GetFilenameStart(CHAR* path)
inline int GetFilenameStart(wchar_t* path)
{
int pos = 0;
int found = 0;
if (path != NULL)
{
while (path[pos] != '\0' && pos < MAX_PATH)
while (path[pos] != L'\0' && pos < MAX_PATH)
{
if (path[pos] == '\\')
if (path[pos] == L'\\')
{
found = pos + 1;
}
@ -83,22 +80,73 @@ inline int GetFilenameStart(CHAR* path)
return found;
}
inline void LogStackTrace()
inline std::wstring GetModuleName(HANDLE process, const STACKFRAME64& stack)
{
BOOL result;
HANDLE thread;
HANDLE process;
CONTEXT context;
STACKFRAME64 stack;
ULONG frame;
DWORD64 dw64Displacement;
DWORD dwDisplacement;
static wchar_t modulePath[MAX_PATH]{};
const size_t size = sizeof(modulePath);
memset(&modulePath[0], '\0', size);
DWORD64 moduleBase = SymGetModuleBase64(process, stack.AddrPC.Offset);
if (!moduleBase)
{
Logger::error(L"Failed to get a module. {}", get_last_error_or_default(GetLastError()));
return std::wstring();
}
if (!GetModuleFileNameW((HINSTANCE)moduleBase, modulePath, MAX_PATH))
{
Logger::error(L"Failed to get a module path. {}", get_last_error_or_default(GetLastError()));
return std::wstring();
}
const int start = GetFilenameStart(modulePath);
return std::wstring(modulePath, start);
}
inline std::wstring GetName(HANDLE process, const STACKFRAME64& stack)
{
static IMAGEHLP_SYMBOL64* pSymbol = (IMAGEHLP_SYMBOL64*)malloc(sizeof(IMAGEHLP_SYMBOL64) + MAX_PATH * sizeof(TCHAR));
if (!pSymbol)
{
return std::wstring();
}
memset(&stack, 0, sizeof(STACKFRAME64));
memset(pSymbol, '\0', sizeof(*pSymbol) + MAX_PATH);
memset(&modulePath[0], '\0', sizeof(modulePath));
pSymbol->MaxNameLength = MAX_PATH;
pSymbol->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64);
DWORD64 dw64Displacement = 0;
if (!SymGetSymFromAddr64(process, stack.AddrPC.Offset, &dw64Displacement, pSymbol))
{
Logger::error(L"Failed to get a symbol. {}", get_last_error_or_default(GetLastError()));
return std::wstring();
}
std::string str = pSymbol->Name;
return std::wstring(str.begin(), str.end());
}
inline std::wstring GetLine(HANDLE process, const STACKFRAME64& stack)
{
static IMAGEHLP_LINE64 line{};
memset(&line, '\0', sizeof(IMAGEHLP_LINE64));
line.SizeOfStruct = sizeof(IMAGEHLP_LINE64);
line.LineNumber = 0;
DWORD dwDisplacement = 0;
if (!SymGetLineFromAddr64(process, stack.AddrPC.Offset, &dwDisplacement, &line))
{
return std::wstring();
}
std::string fileName(line.FileName);
return L"(" + std::wstring(fileName.begin(), fileName.end()) + L":" + std::to_wstring(line.LineNumber) + L")";
}
inline void LogStackTrace()
{
CONTEXT context;
try
{
RtlCaptureContext(&context);
@ -109,9 +157,11 @@ inline void LogStackTrace()
return;
}
process = GetCurrentProcess();
thread = GetCurrentThread();
dw64Displacement = 0;
STACKFRAME64 stack;
memset(&stack, 0, sizeof(STACKFRAME64));
HANDLE process = GetCurrentProcess();
HANDLE thread = GetCurrentThread();
stack.AddrPC.Offset = context.Rip;
stack.AddrPC.Mode = AddrModeFlat;
stack.AddrStack.Offset = context.Rsp;
@ -119,8 +169,9 @@ inline void LogStackTrace()
stack.AddrFrame.Offset = context.Rbp;
stack.AddrFrame.Mode = AddrModeFlat;
std::stringstream ss;
for (frame = 0;; frame++)
BOOL result = false;
std::wstringstream ss;
for (;;)
{
result = StackWalk64(
IMAGE_FILE_MACHINE_AMD64,
@ -138,34 +189,10 @@ inline void LogStackTrace()
break;
}
pSymbol->MaxNameLength = MAX_PATH;
pSymbol->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64);
if (!SymGetSymFromAddr64(process, stack.AddrPC.Offset, &dw64Displacement, pSymbol))
{
Logger::error(L"Failed to get a symbol. {}", get_last_error_or_default(GetLastError()));
}
line.LineNumber = 0;
SymGetLineFromAddr64(process, stack.AddrPC.Offset, &dwDisplacement, &line);
DWORD64 moduleBase = SymGetModuleBase64(process, stack.AddrPC.Offset);
if (moduleBase)
{
if (!GetModuleFileNameA((HINSTANCE)moduleBase, modulePath, MAX_PATH))
{
Logger::error(L"Failed to get a module path. {}", get_last_error_or_default(GetLastError()));
}
}
else
{
Logger::error(L"Failed to get a module. {}", get_last_error_or_default(GetLastError()));
}
ss << std::string(modulePath).substr(GetFilenameStart(modulePath)) << "!" << pSymbol->Name << "(" << line.FileName << ":" << line.LineNumber << std::endl;
ss << GetModuleName(process, stack) << "!" << GetName(process, stack) << GetLine(process, stack) << std::endl;
}
Logger::error("STACK TRACE\r\n{}", ss.str());
Logger::error(L"STACK TRACE\r\n{}", ss.str());
Logger::flush();
}
@ -218,7 +245,6 @@ inline void InitSymbols()
{
// Preload symbols so they will be available in case of out-of-memory exception
SymSetOptions(SYMOPT_LOAD_LINES | SYMOPT_UNDNAME);
line.SizeOfStruct = sizeof(IMAGEHLP_LINE64);
HANDLE process = GetCurrentProcess();
if (!SymInitialize(process, NULL, TRUE))
{

3
src/modules/fancyzones/FancyZones/main.cpp
View File

@ -25,9 +25,8 @@ const std::wstring instanceMutexName = L"Local\\PowerToys_FancyZones_InstanceMut
int WINAPI wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ PWSTR lpCmdLine, _In_ int nCmdShow)
{
winrt::init_apartment();
InitUnhandledExceptionHandler_x64();
LoggerHelpers::init_logger(moduleName, internalPath, LogSettings::fancyZonesLoggerName);
InitUnhandledExceptionHandler_x64();
auto mutex = CreateMutex(nullptr, true, instanceMutexName.c_str());
if (mutex == nullptr)