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[NTOS:DBGK]
- Add SEH in DbgkpPostFakeModuleMessages. Fixes crash in ntdll_winetest:info when trying to debug another process that was started suspended. CORE-13369 #resolve svn path=/trunk/; revision=74946
This commit is contained in:
Thomas Faber
parent
68dca562d7
commit
c2486683cc
1 changed files with 100 additions and 83 deletions
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@ -470,6 +470,7 @@ DbgkpPostFakeModuleMessages(IN PEPROCESS Process,
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OBJECT_ATTRIBUTES ObjectAttributes;
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IO_STATUS_BLOCK IoStatusBlock;
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NTSTATUS Status;
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UNICODE_STRING FullDllName;
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PAGED_CODE();
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DBGKTRACE(DBGK_PROCESS_DEBUG, "Process: %p Thread: %p DebugObject: %p\n",
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Process, Thread, DebugObject);
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@ -477,96 +478,112 @@ DbgkpPostFakeModuleMessages(IN PEPROCESS Process,
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/* Quit if there's no PEB */
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if (!Peb) return STATUS_SUCCESS;
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/* Get the Loader Data List */
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LdrData = Peb->Ldr;
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ListHead = &LdrData->InLoadOrderModuleList;
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NextEntry = ListHead->Flink;
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/* Loop the modules */
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i = 0;
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while ((NextEntry != ListHead) && (i < 500))
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/* Accessing user memory, need SEH */
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_SEH2_TRY
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{
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/* Skip the first entry */
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if (!i)
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/* Get the Loader Data List */
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ProbeForRead(Peb, sizeof(*Peb), 1);
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LdrData = Peb->Ldr;
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ProbeForRead(LdrData, sizeof(*LdrData), 1);
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ListHead = &LdrData->InLoadOrderModuleList;
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ProbeForRead(ListHead, sizeof(*ListHead), 1);
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NextEntry = ListHead->Flink;
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/* Loop the modules */
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i = 0;
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while ((NextEntry != ListHead) && (i < 500))
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{
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ProbeForRead(NextEntry, sizeof(*NextEntry), 1);
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/* Skip the first entry */
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if (!i)
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{
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/* Go to the next module */
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NextEntry = NextEntry->Flink;
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i++;
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continue;
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}
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/* Get the entry */
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LdrEntry = CONTAINING_RECORD(NextEntry,
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LDR_DATA_TABLE_ENTRY,
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InLoadOrderLinks);
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ProbeForRead(LdrEntry, sizeof(*LdrEntry), 1);
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/* Setup the API Message */
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RtlZeroMemory(&ApiMessage, sizeof(DBGKM_MSG));
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ApiMessage.ApiNumber = DbgKmLoadDllApi;
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/* Set base and clear the name */
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LoadDll->BaseOfDll = LdrEntry->DllBase;
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LoadDll->NamePointer = NULL;
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/* Get the NT Headers */
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NtHeader = RtlImageNtHeader(LoadDll->BaseOfDll);
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if (NtHeader)
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{
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/* Save debug data */
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LoadDll->DebugInfoFileOffset = NtHeader->FileHeader.
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PointerToSymbolTable;
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LoadDll->DebugInfoSize = NtHeader->FileHeader.NumberOfSymbols;
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}
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/* Trace */
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FullDllName = LdrEntry->FullDllName;
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ProbeForRead(FullDllName.Buffer, FullDllName.MaximumLength, 1);
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DBGKTRACE(DBGK_PROCESS_DEBUG, "Name: %wZ. Base: %p\n",
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&FullDllName, LdrEntry->DllBase);
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/* Get the name of the DLL */
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Status = MmGetFileNameForAddress(NtHeader, &ModuleName);
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if (NT_SUCCESS(Status))
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{
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/* Setup the object attributes */
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InitializeObjectAttributes(&ObjectAttributes,
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&ModuleName,
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OBJ_FORCE_ACCESS_CHECK |
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OBJ_KERNEL_HANDLE |
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OBJ_CASE_INSENSITIVE,
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NULL,
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NULL);
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/* Open the file to get a handle to it */
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Status = ZwOpenFile(&LoadDll->FileHandle,
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GENERIC_READ | SYNCHRONIZE,
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&ObjectAttributes,
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&IoStatusBlock,
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FILE_SHARE_READ |
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FILE_SHARE_WRITE |
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FILE_SHARE_DELETE,
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FILE_SYNCHRONOUS_IO_NONALERT);
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if (!NT_SUCCESS(Status)) LoadDll->FileHandle = NULL;
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/* Free the name now */
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ExFreePool(ModuleName.Buffer);
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}
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/* Send the fake module load message */
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Status = DbgkpQueueMessage(Process,
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Thread,
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&ApiMessage,
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DEBUG_EVENT_NOWAIT,
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DebugObject);
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if (!NT_SUCCESS(Status))
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{
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/* Message send failed, close the file handle if we had one */
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if (LoadDll->FileHandle) ObCloseHandle(LoadDll->FileHandle,
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KernelMode);
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}
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/* Go to the next module */
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NextEntry = NextEntry->Flink;
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i++;
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continue;
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}
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/* Get the entry */
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LdrEntry = CONTAINING_RECORD(NextEntry,
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LDR_DATA_TABLE_ENTRY,
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InLoadOrderLinks);
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/* Setup the API Message */
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RtlZeroMemory(&ApiMessage, sizeof(DBGKM_MSG));
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ApiMessage.ApiNumber = DbgKmLoadDllApi;
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/* Set base and clear the name */
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LoadDll->BaseOfDll = LdrEntry->DllBase;
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LoadDll->NamePointer = NULL;
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/* Get the NT Headers */
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NtHeader = RtlImageNtHeader(LoadDll->BaseOfDll);
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if (NtHeader)
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{
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/* Save debug data */
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LoadDll->DebugInfoFileOffset = NtHeader->FileHeader.
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PointerToSymbolTable;
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LoadDll->DebugInfoSize = NtHeader->FileHeader.NumberOfSymbols;
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}
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/* Trace */
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DBGKTRACE(DBGK_PROCESS_DEBUG, "Name: %wZ. Base: %p\n",
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&LdrEntry->FullDllName, LdrEntry->DllBase);
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/* Get the name of the DLL */
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Status = MmGetFileNameForAddress(NtHeader, &ModuleName);
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if (NT_SUCCESS(Status))
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{
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/* Setup the object attributes */
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InitializeObjectAttributes(&ObjectAttributes,
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&ModuleName,
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OBJ_FORCE_ACCESS_CHECK |
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OBJ_KERNEL_HANDLE |
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OBJ_CASE_INSENSITIVE,
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NULL,
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NULL);
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/* Open the file to get a handle to it */
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Status = ZwOpenFile(&LoadDll->FileHandle,
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GENERIC_READ | SYNCHRONIZE,
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&ObjectAttributes,
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&IoStatusBlock,
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FILE_SHARE_READ |
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FILE_SHARE_WRITE |
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FILE_SHARE_DELETE,
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FILE_SYNCHRONOUS_IO_NONALERT);
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if (!NT_SUCCESS(Status)) LoadDll->FileHandle = NULL;
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/* Free the name now */
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ExFreePool(ModuleName.Buffer);
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}
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/* Send the fake module load message */
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Status = DbgkpQueueMessage(Process,
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Thread,
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&ApiMessage,
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DEBUG_EVENT_NOWAIT,
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DebugObject);
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if (!NT_SUCCESS(Status))
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{
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/* Message send failed, close the file handle if we had one */
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if (LoadDll->FileHandle) ObCloseHandle(LoadDll->FileHandle,
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KernelMode);
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}
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/* Go to the next module */
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NextEntry = NextEntry->Flink;
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i++;
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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NOTHING;
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}
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_SEH2_END;
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/* Return success */
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return STATUS_SUCCESS;
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