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[RTL]: Make RtlUnhandledExceptionFilter show a stack trace, so at least we can see where the exception came from.
svn path=/trunk/; revision=59903
This commit is contained in:
Alex Ionescu
parent
3d4f9a8c5a
commit
0da3197b71
2 changed files with 132 additions and 0 deletions
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@ -169,6 +169,128 @@ RtlCaptureStackBackTrace(IN ULONG FramesToSkip,
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return (USHORT)i;
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}
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/*
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* Private helper function to lookup the module name from a given address.
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* The address can point to anywhere within the module.
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*/
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static const char*
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_module_name_from_addr(const void* addr, void **module_start_addr,
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char* psz, size_t nChars)
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{
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#if 0
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MEMORY_BASIC_INFORMATION mbi;
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if (VirtualQuery(addr, &mbi, sizeof(mbi)) != sizeof(mbi) ||
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!GetModuleFileNameA((HMODULE) mbi.AllocationBase, psz, nChars))
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{
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psz[0] = '\0';
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*module_start_addr = 0;
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}
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else
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{
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*module_start_addr = (void *) mbi.AllocationBase;
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}
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return psz;
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#else
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psz[0] = '\0';
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*module_start_addr = 0;
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return psz;
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#endif
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}
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static VOID
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_dump_context(PCONTEXT pc)
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{
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#ifdef _M_IX86
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/*
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* Print out the CPU registers
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*/
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DbgPrint("CS:EIP %x:%x\n", pc->SegCs & 0xffff, pc->Eip);
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DbgPrint("DS %x ES %x FS %x GS %x\n", pc->SegDs & 0xffff, pc->SegEs & 0xffff,
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pc->SegFs & 0xffff, pc->SegGs & 0xfff);
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DbgPrint("EAX: %.8x EBX: %.8x ECX: %.8x\n", pc->Eax, pc->Ebx, pc->Ecx);
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DbgPrint("EDX: %.8x EBP: %.8x ESI: %.8x ESP: %.8x\n", pc->Edx,
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pc->Ebp, pc->Esi, pc->Esp);
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DbgPrint("EDI: %.8x EFLAGS: %.8x\n", pc->Edi, pc->EFlags);
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#elif defined(_M_AMD64)
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DbgPrint("CS:RIP %x:%I64x\n", pc->SegCs & 0xffff, pc->Rip);
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DbgPrint("DS %x ES %x FS %x GS %x\n", pc->SegDs & 0xffff, pc->SegEs & 0xffff,
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pc->SegFs & 0xffff, pc->SegGs & 0xfff);
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DbgPrint("RAX: %I64x RBX: %I64x RCX: %I64x RDI: %I64x\n", pc->Rax, pc->Rbx, pc->Rcx, pc->Rdi);
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DbgPrint("RDX: %I64x RBP: %I64x RSI: %I64x RSP: %I64x\n", pc->Rdx, pc->Rbp, pc->Rsi, pc->Rsp);
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DbgPrint("R8: %I64x R9: %I64x R10: %I64x R11: %I64x\n", pc->R8, pc->R9, pc->R10, pc->R11);
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DbgPrint("R12: %I64x R13: %I64x R14: %I64x R15: %I64x\n", pc->R12, pc->R13, pc->R14, pc->R15);
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DbgPrint("EFLAGS: %.8x\n", pc->EFlags);
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#else
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#warning Unknown architecture
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#endif
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}
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static VOID
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PrintStackTrace(struct _EXCEPTION_POINTERS *ExceptionInfo)
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{
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PVOID StartAddr;
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CHAR szMod[128] = "";
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PEXCEPTION_RECORD ExceptionRecord = ExceptionInfo->ExceptionRecord;
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PCONTEXT ContextRecord = ExceptionInfo->ContextRecord;
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/* Print a stack trace. */
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DbgPrint("Unhandled exception\n");
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DbgPrint("ExceptionCode: %8x\n", ExceptionRecord->ExceptionCode);
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if ((NTSTATUS) ExceptionRecord->ExceptionCode == STATUS_ACCESS_VIOLATION &&
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ExceptionRecord->NumberParameters == 2)
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{
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DbgPrint("Faulting Address: %8x\n", ExceptionRecord->ExceptionInformation[1]);
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}
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_dump_context(ContextRecord);
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_module_name_from_addr(ExceptionRecord->ExceptionAddress, &StartAddr, szMod, sizeof(szMod));
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DbgPrint("Address:\n %8x+%-8x %s\n",
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(PVOID) StartAddr,
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(ULONG_PTR) ExceptionRecord->ExceptionAddress - (ULONG_PTR) StartAddr,
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szMod);
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#ifdef _M_IX86
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DbgPrint("Frames:\n");
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_SEH2_TRY
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{
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UINT i;
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PULONG Frame = (PULONG) ContextRecord->Ebp;
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for (i = 0; Frame[1] != 0 && Frame[1] != 0xdeadbeef && i < 128; i++)
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{
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//if (IsBadReadPtr((PVOID) Frame[1], 4))
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if (Frame[1] == 0)
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{
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DbgPrint(" %8x%9s %s\n", Frame[1], "<invalid address>", " ");
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}
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else
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{
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_module_name_from_addr((const void*) Frame[1], &StartAddr,
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szMod, sizeof(szMod));
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DbgPrint(" %8x+%-8x %s\n",
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(PVOID) StartAddr,
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(ULONG_PTR) Frame[1] - (ULONG_PTR) StartAddr,
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szMod);
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}
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if (Frame[0] == 0) break;
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//if (IsBadReadPtr((PVOID) Frame[0], sizeof(*Frame) * 2))
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//break;
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Frame = (PULONG) Frame[0];
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}
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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DbgPrint("<error dumping stack trace: 0x%x>\n", _SEH2_GetExceptionCode());
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}
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_SEH2_END;
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#endif
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}
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/*
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* @unimplemented
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*/
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@ -178,6 +300,7 @@ RtlUnhandledExceptionFilter(IN struct _EXCEPTION_POINTERS* ExceptionInfo)
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{
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/* This is used by the security cookie checks, and calso called externally */
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UNIMPLEMENTED;
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PrintStackTrace(ExceptionInfo);
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return ERROR_CALL_NOT_IMPLEMENTED;
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}
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@ -1234,6 +1234,15 @@ KiTrap0EHandler(IN PKTRAP_FRAME TrapFrame)
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/* Continue execution */
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KiEoiHelper(TrapFrame);
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}
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else
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{
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/* Do what windows does and issue an invalid access violation */
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KiDispatchException2Args(KI_EXCEPTION_ACCESS_VIOLATION,
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TrapFrame->Eip,
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TrapFrame->ErrCode & 2 ? TRUE : FALSE,
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Cr2,
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TrapFrame);
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}
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}
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/* Call the access fault handler */
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