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[NTOS:PNP]
- Fix memory leak in IopDetectResourceConflict. While we're at it use pool tagging, kernel handles and avoid INVALID_HANDLE_VALUE. svn path=/trunk/; revision=69227
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@ -1204,7 +1204,7 @@ IopDetectResourceConflict(
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{
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OBJECT_ATTRIBUTES ObjectAttributes;
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UNICODE_STRING KeyName;
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HANDLE ResourceMapKey = INVALID_HANDLE_VALUE, ChildKey2 = INVALID_HANDLE_VALUE, ChildKey3 = INVALID_HANDLE_VALUE;
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HANDLE ResourceMapKey = NULL, ChildKey2 = NULL, ChildKey3 = NULL;
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ULONG KeyInformationLength, RequiredLength, KeyValueInformationLength, KeyNameInformationLength;
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PKEY_BASIC_INFORMATION KeyInformation;
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PKEY_VALUE_PARTIAL_INFORMATION KeyValueInformation;
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@ -1213,7 +1213,11 @@ IopDetectResourceConflict(
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NTSTATUS Status;
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RtlInitUnicodeString(&KeyName, L"\\Registry\\Machine\\HARDWARE\\RESOURCEMAP");
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InitializeObjectAttributes(&ObjectAttributes, &KeyName, OBJ_CASE_INSENSITIVE, 0, NULL);
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InitializeObjectAttributes(&ObjectAttributes,
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&KeyName,
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OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
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NULL,
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NULL);
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Status = ZwOpenKey(&ResourceMapKey, KEY_ENUMERATE_SUB_KEYS | KEY_QUERY_VALUE, &ObjectAttributes);
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if (!NT_SUCCESS(Status))
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{
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@ -1234,7 +1238,9 @@ IopDetectResourceConflict(
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else if (Status == STATUS_BUFFER_OVERFLOW || Status == STATUS_BUFFER_TOO_SMALL)
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{
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KeyInformationLength = RequiredLength;
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KeyInformation = ExAllocatePool(PagedPool, KeyInformationLength);
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KeyInformation = ExAllocatePoolWithTag(PagedPool,
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KeyInformationLength,
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TAG_IO);
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if (!KeyInformation)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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@ -1252,17 +1258,22 @@ IopDetectResourceConflict(
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goto cleanup;
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ChildKeyIndex1++;
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if (!NT_SUCCESS(Status))
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{
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ExFreePoolWithTag(KeyInformation, TAG_IO);
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goto cleanup;
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}
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KeyName.Buffer = KeyInformation->Name;
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KeyName.MaximumLength = KeyName.Length = (USHORT)KeyInformation->NameLength;
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InitializeObjectAttributes(&ObjectAttributes,
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&KeyName,
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OBJ_CASE_INSENSITIVE,
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OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
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ResourceMapKey,
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NULL);
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Status = ZwOpenKey(&ChildKey2, KEY_ENUMERATE_SUB_KEYS | KEY_QUERY_VALUE, &ObjectAttributes);
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ExFreePool(KeyInformation);
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Status = ZwOpenKey(&ChildKey2,
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KEY_ENUMERATE_SUB_KEYS | KEY_QUERY_VALUE,
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&ObjectAttributes);
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ExFreePoolWithTag(KeyInformation, TAG_IO);
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if (!NT_SUCCESS(Status))
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goto cleanup;
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@ -1279,7 +1290,9 @@ IopDetectResourceConflict(
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else if (Status == STATUS_BUFFER_TOO_SMALL)
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{
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KeyInformationLength = RequiredLength;
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KeyInformation = ExAllocatePool(PagedPool, KeyInformationLength);
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KeyInformation = ExAllocatePoolWithTag(PagedPool,
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KeyInformationLength,
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TAG_IO);
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if (!KeyInformation)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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@ -1297,17 +1310,20 @@ IopDetectResourceConflict(
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goto cleanup;
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ChildKeyIndex2++;
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if (!NT_SUCCESS(Status))
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{
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ExFreePoolWithTag(KeyInformation, TAG_IO);
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goto cleanup;
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}
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KeyName.Buffer = KeyInformation->Name;
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KeyName.MaximumLength = KeyName.Length = (USHORT)KeyInformation->NameLength;
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InitializeObjectAttributes(&ObjectAttributes,
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&KeyName,
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OBJ_CASE_INSENSITIVE,
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OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
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ChildKey2,
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NULL);
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Status = ZwOpenKey(&ChildKey3, KEY_QUERY_VALUE, &ObjectAttributes);
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ExFreePool(KeyInformation);
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ExFreePoolWithTag(KeyInformation, TAG_IO);
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if (!NT_SUCCESS(Status))
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goto cleanup;
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@ -1324,7 +1340,9 @@ IopDetectResourceConflict(
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else if (Status == STATUS_BUFFER_TOO_SMALL)
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{
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KeyValueInformationLength = RequiredLength;
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KeyValueInformation = ExAllocatePool(PagedPool, KeyValueInformationLength);
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KeyValueInformation = ExAllocatePoolWithTag(PagedPool,
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KeyValueInformationLength,
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TAG_IO);
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if (!KeyValueInformation)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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@ -1341,7 +1359,10 @@ IopDetectResourceConflict(
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else
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goto cleanup;
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if (!NT_SUCCESS(Status))
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{
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ExFreePoolWithTag(KeyValueInformation, TAG_IO);
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goto cleanup;
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}
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Status = ZwEnumerateValueKey(ChildKey3,
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ChildKeyIndex3,
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@ -1352,7 +1373,9 @@ IopDetectResourceConflict(
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if (Status == STATUS_BUFFER_TOO_SMALL)
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{
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KeyNameInformationLength = RequiredLength;
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KeyNameInformation = ExAllocatePool(PagedPool, KeyNameInformationLength + sizeof(WCHAR));
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KeyNameInformation = ExAllocatePoolWithTag(PagedPool,
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KeyNameInformationLength + sizeof(WCHAR),
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TAG_IO);
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if (!KeyNameInformation)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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@ -1368,45 +1391,47 @@ IopDetectResourceConflict(
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}
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else
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goto cleanup;
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ChildKeyIndex3++;
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if (!NT_SUCCESS(Status))
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{
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ExFreePoolWithTag(KeyNameInformation, TAG_IO);
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goto cleanup;
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}
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KeyNameInformation->Name[KeyNameInformation->NameLength / sizeof(WCHAR)] = UNICODE_NULL;
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/* Skip translated entries */
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if (wcsstr(KeyNameInformation->Name, L".Translated"))
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{
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ExFreePool(KeyNameInformation);
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ExFreePoolWithTag(KeyNameInformation, TAG_IO);
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ExFreePoolWithTag(KeyValueInformation, TAG_IO);
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continue;
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}
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ExFreePool(KeyNameInformation);
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ExFreePoolWithTag(KeyNameInformation, TAG_IO);
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if (IopCheckForResourceConflict(ResourceList,
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(PCM_RESOURCE_LIST)KeyValueInformation->Data,
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Silent,
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ConflictingDescriptor))
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{
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ExFreePool(KeyValueInformation);
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ExFreePoolWithTag(KeyValueInformation, TAG_IO);
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Status = STATUS_CONFLICTING_ADDRESSES;
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goto cleanup;
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}
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ExFreePool(KeyValueInformation);
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ExFreePoolWithTag(KeyValueInformation, TAG_IO);
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}
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}
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}
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cleanup:
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if (ResourceMapKey != INVALID_HANDLE_VALUE)
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ZwClose(ResourceMapKey);
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if (ChildKey2 != INVALID_HANDLE_VALUE)
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ZwClose(ChildKey2);
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if (ChildKey3 != INVALID_HANDLE_VALUE)
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ZwClose(ChildKey3);
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if (ResourceMapKey != NULL)
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ObCloseHandle(ResourceMapKey, KernelMode);
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if (ChildKey2 != NULL)
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ObCloseHandle(ChildKey2, KernelMode);
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if (ChildKey3 != NULL)
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ObCloseHandle(ChildKey3, KernelMode);
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if (Status == STATUS_NO_MORE_ENTRIES)
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Status = STATUS_SUCCESS;
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