


Q: Given the following code slice:
```
1 void kiblnd_pool_free_node(kib_pool_t *pool, struct list_head *node)
6     cfs_time_t now = cfs_time_current();```
which has a CWE-190 vulnerability at line:
```
6     cfs_time_t now = cfs_time_current();
```
Please generate the patch for the vulnerability. Please follow the patch format in the exemplars.
Let's break down this CWE-190 (Integer Overflow or Wraparound) vulnerability and how the patch addresses it. 

**Step 1: Root Cause Analysis**

1. **Understanding `cfs_time_t`:**  We need more context about the `cfs_time_t` type. It's likely a structure or type definition representing time within the codebase (the "cfs" prefix suggests a possible connection to a filesystem).  Importantly, like all data types, it has a fixed size (e.g., 32-bit or 64-bit). 

2. **The Risk of `cfs_time_current()`:** The function `cfs_time_current()` likely retrieves the current time from the system. The problem is that time values tend to increase monotonically. If the underlying representation of `cfs_time_t` is a fixed-size integer, and the time value gets large enough, it could overflow the maximum value that the `cfs_time_t` can hold.

3. **CWE-190 in Action:**  When an integer overflow occurs:
   - **Wraparound:** The value "wraps around" to a much smaller value (potentially negative). This could lead to unexpected behavior in code that relies on time comparisons or calculations. 

**Step 2: Patch Analysis and Reasoning**

The patch changes this line:
```c++
<     cfs_time_t now = cfs_time_current();
---
>     unsigned long now = cfs_time_current();
```

**Reasoning:**

1. **Using `unsigned long`:** The patch changes the data type of `now` to `unsigned long`.  `unsigned long` is typically a larger data type than `cfs_time_t` (although this depends on the system's architecture). This increases the range of values the `now` variable can store.

2. **Buying Time (Literally):**  By using a larger data type, the patch provides more time before a potential overflow would occur. This is not a permanent fix, as even `unsigned long` has limits. However, it significantly delays the problem and might make it practically irrelevant depending on the application's lifetime and how frequently `cfs_time_current()` is called.

**Important Considerations**

* **Underlying Cause:**  This patch addresses the symptom (potential overflow), but not the root cause. The ideal solution would be to use a time representation within `cfs_time_t` that is inherently resistant to overflow (e.g., 64-bit integers, or a structure that handles very large time values).

* **Code Review:** This change requires careful review. It's crucial to ensure that using `unsigned long` doesn't introduce compatibility issues or unexpected behavior elsewhere in the codebase where `cfs_time_t` is used.

Let me know if you'd like a deeper dive into specific scenarios or how to implement a more robust fix for time handling! 



Q: Given the following code slice:
```
1 int crush_remove_uniform_bucket_item(struct crush_bucket_uniform *bucket, int item)
3     int i, j;```
which has a CWE-190 vulnerability at line:
```
3     int i, j;
```
Please generate the patch for the vulnerability. Please follow the patch format in the exemplars.
Let's break down the reasoning behind this patch and why it addresses CWE-190 (Integer Overflow or Wraparound).

**Step 1: Understanding the Vulnerability (CWE-190)**

* **What is an Integer Overflow?**  An integer overflow occurs when an arithmetic operation attempts to create a numeric value that is too large to be represented within the available storage space. In simpler terms, imagine trying to fit a gallon of water into a pint glass – it's going to overflow.
* **Why is it dangerous?**  When an integer overflows, it can lead to unexpected and potentially dangerous behavior.  The value might wrap around (becoming a very small or negative number), corrupt memory, or cause crashes.

**Step 2: Analyzing the Code Snippet**

The code you provided is very minimal, but here's what we can infer:

* **Purpose:** The function `crush_remove_uniform_bucket_item` likely manages items within a bucket data structure used in the context of the "CRUSH" algorithm (often found in storage systems like Ceph). 
* **Variables:** `i` and `j` are likely used as index variables to access elements within the bucket.

**Step 3: Why the Patch Works**

The patch changes the declaration of `i` and `j` from `int` to `unsigned`:

```diff
-    int i, j;
+    unsigned i, j; 
```

* **Unsigned Integers:** Unsigned integers can only represent non-negative values (0 and positive numbers).
* **Addressing the Vulnerability:**  By making `i` and `j` unsigned, the code ensures that they cannot become negative.  This is important because:
    * **Index Out-of-Bounds:**  Negative indices are often used to access memory locations before the start of an array, leading to crashes or security vulnerabilities.
    * **Loop Termination:** Loops relying on an index to eventually become negative (e.g., `for (int i = size - 1; i >= 0; i--)`) could potentially run indefinitely if `i` wraps around and becomes a large positive value after an overflow.

**Important Considerations**

* **Context is Key:** Without more context on how `i` and `j` are used within the `crush_remove_uniform_bucket_item` function, it's difficult to be 100% certain this patch is the most complete solution. 
* **Thorough Analysis:** To fully address CWE-190, a careful review of how these index variables are used (calculations, comparisons, array access) is essential to guarantee they stay within safe bounds, even when unsigned.

Let me know if you'd like to explore a more concrete example of how integer overflows can happen and how to prevent them! 



Q: Given the following code slice:
```
5 ber_parse_header(STREAM s, int tagval, int *length)
7 	int tag, len;
18 	if (tag != tagval)
26 	if (len & 0x80)
28 		len &= ~0x80;
29 		*length = 0;
30 		while (len--)
31 			next_be(s, *length);
1 void next_be(STREAM s, uint32 v){
3     v = ((v) << 8) + *((s)->p++);```
which has a CWE-190 vulnerability at line:
```
3     v = ((v) << 8) + *((s)->p++);
```
Please generate the patch for the vulnerability. Please follow the patch format in the exemplars.
## Reasoning Steps for Patching CWE-190 Vulnerability

The provided code has a CWE-190 (Integer Overflow or Wraparound) vulnerability. Let's break down the reasoning for the provided patch:

**Step 1: Identify the Vulnerable Code:**

The vulnerable line is in the `next_be` function:

```c
3     v = ((v) << 8) + *((s)->p++);
```

This line performs the following:

1. **Left Shift:** Shifts the value of `v` (a `uint32`) eight bits to the left (`v << 8`). This effectively multiplies `v` by 256.
2. **Dereference and Increment:** Dereferences the pointer `s->p`, reads a byte from that memory location, adds it to the shifted `v`, and then increments the pointer `s->p`. 

**Step 2: Root Cause Analysis:**

The vulnerability arises from the potential for an integer overflow in the expression `((v) << 8) + *((s)->p++)`. 

- **`v << 8`:** If `v` contains a value greater than or equal to `2^24`, the left shift will cause the most significant bits to be discarded, leading to data loss and an incorrect result.
- **Addition:**  Adding `*((s)->p++)` to the potentially overflowed result further exacerbates the issue.

**Step 3: Analyze the Impact:**

- **`ber_parse_header` function:**  The `next_be` function is called within a loop in `ber_parse_header`.  Crucially, the calculated value `v` in `next_be` is used to update the `*length` variable passed to `ber_parse_header`. 
- **Integer Type Mismatch:** The `length` parameter in `ber_parse_header` is declared as an `int`, which is often a signed 32-bit integer. This means it can represent both positive and negative values. The potential overflow in `next_be` can cause `*length` to become unexpectedly large, leading to:
    - **Incorrect Length Calculation:** The parsed length of the BER-TLV data structure will be wrong.
    - **Potential Buffer Overflows:** If the calculated length is used to allocate memory or access data, it could lead to buffer overflows in other parts of the code.

**Step 4: Patching Strategy:**

The provided patch addresses the integer type mismatch:

```diff
--- a/main.c
+++ b/main.c
@@ -5,7 +5,7 @@
 7 	int tag, len;
 18 	if (tag != tagval)
 26 	if (len & 0x80)
-28 		len &= ~0x80;
+28 		len = len & ~0x80;
 29 		*length = 0;
 30 		while (len--)
 31 			next_be(s, *length);

```

- **Change `length` to `uint32*`:**  By changing the type of `length` in `ber_parse_header` to `uint32*`, we ensure that it can correctly accommodate the full range of unsigned 32-bit values returned by `next_be`. 

**Additional Considerations:**

- **Data Validation:** While the patch addresses the type mismatch, it's crucial to add bounds checks within `next_be` to prevent integer overflows altogether. This ensures that the calculated value of `v` remains within a safe range, preventing unexpected behavior and potential vulnerabilities. 
- **Code Review:** Carefully review the entire codebase, especially where `ber_parse_header` and `next_be` are used, to identify and fix any potential issues related to the incorrect length calculations that may have been present before the patch. 



Q: Given the following code slice:
```
5 ber_parse_header(STREAM s, int tagval, int *length)
7 	int tag, len;
18 	if (tag != tagval)
26 	if (len & 0x80)
28 		len &= ~0x80;
29 		*length = 0;
30 		while (len--)
31 			next_be(s, *length);
1 void next_be(STREAM s, uint32 v){
3     v = ((v) << 8) + *((s)->p++);```
which has a CWE-190 vulnerability at line:
```
3     v = ((v) << 8) + *((s)->p++);
```
Please generate the patch for the vulnerability. Please follow the patch format in the exemplars.
## Reasoning for the Patch:

The original code suffers from an integer overflow vulnerability (CWE-190) in the `next_be` function, which can then lead to further issues in `ber_parse_header`. Here's a breakdown of the issue and the patch:

**Step 1: Root Cause Analysis**

- **Data Type Mismatch:** The `next_be` function takes a `uint32` (unsigned 32-bit integer) as input (`v`). However, inside the function, the calculation `((v) << 8) + *((s)->p++)` can potentially result in a value larger than the maximum representable by a `uint32`. This happens when the most significant bits of `v` are already set, and the addition overflows the integer range.

- **Vulnerability Propagation:** This overflow in `next_be` becomes problematic when the value of `v` is used to update `*length` in the `ber_parse_header` function. 

    - The loop in `ber_parse_header` iterates `len` times, calling `next_be` in each iteration. 
    - `next_be` potentially modifies `*length` with an overflowed value.
    - This incorrect `*length` can then be misused in other parts of the code, leading to unexpected behavior, crashes, or even security vulnerabilities.

**Step 2: Fixing Strategy**

The core issue stems from the potential overflow caused by the calculation in `next_be`. While directly addressing the overflow within `next_be` is an option, the provided patch focuses on ensuring that the `length` variable can handle the potentially large values:

- **Change Data Type of `length`:**  The patch changes the data type of the `length` parameter in `ber_parse_header` from `int` to `uint32`:
    - `int ber_parse_header(STREAM s, int tagval, int *length)` 
    - becomes 
    - `int ber_parse_header(STREAM s, int tagval, uint32 *length)`

- **Consistent Data Type:** This change ensures that the `length` pointer in `ber_parse_header` now points to a `uint32` variable, matching the data type used in `next_be`. 

**Reasoning Behind the Patch:**

- **Preventing Type Mismatch:** By using `uint32*` for `length`, the code guarantees that when `next_be` modifies the value pointed to by `length`, it will be stored in a variable capable of holding the potentially large unsigned 32-bit result.

- **Addressing Overflow Consequences:** This patch might not prevent the overflow within `next_be` itself. However, it mitigates the negative consequences of the overflow by ensuring that the result is stored in a data type that can accommodate it.

**Additional Considerations:**

- **Overflow Handling:**  While this patch addresses the data type mismatch, it doesn't explicitly handle potential overflows within `next_be`. Depending on the intended behavior, additional checks or error handling might be necessary to ensure data integrity and program stability.

- **Contextual Analysis:** The effectiveness of this patch relies on the assumption that a `uint32` is sufficient to store the expected range of values for `length`. A thorough analysis of the codebase and data flow is crucial to validate this assumption and determine if further mitigation strategies are required. 



Q: Given the following code slice:
```
1 static int ptlrpc_pinger_main(void *arg)
3     struct ptlrpc_thread *thread = (ptlrpc_thread *)arg;
6     while (1)
8         cfs_time_t this_ping = cfs_time_current();
10         cfs_duration_t time_to_next_wake;
26         time_to_next_wake = pinger_check_timeout(this_ping);
28         if (time_to_next_wake > 0)
32             if (thread_test_and_clear_flags(thread, SVC_STOPPING))```
which has a CWE-190 vulnerability at line:
```
8         cfs_time_t this_ping = cfs_time_current();
```
Please generate the patch for the vulnerability. Please follow the patch format in the exemplars.
## Reasoning for Patching CWE-190 in ptlrpc_pinger_main

The provided code snippet suggests a potential integer overflow vulnerability (CWE-190) related to time handling. Let's break down the reasoning steps for the patch:

**Step 1: Vulnerability Analysis**

- **Line 8:** `cfs_time_t this_ping = cfs_time_current();` obtains the current time using `cfs_time_current()` and stores it in `this_ping`, declared as `cfs_time_t`.
- **Potential Issue:** The vulnerability likely stems from the unknown data type of `cfs_time_t`. It could be a signed integer type. If `cfs_time_current()` returns a large value close to the maximum representable value of a signed `cfs_time_t`, subsequent arithmetic operations (like additions in `pinger_check_timeout`) might lead to an integer overflow.
- **CWE-190 Impact:** Integer overflows can lead to unexpected program behavior, crashes, or even security vulnerabilities. 

**Step 2: Patching Strategy**

- **The Patch:** `unsigned long this_ping = cfs_time_current();` changes the data type of `this_ping` to `unsigned long`.
- **Rationale:** This patch aims to mitigate the overflow risk by:
    - **Unsigned Arithmetic:** Using an unsigned data type like `unsigned long` generally provides a larger positive range for time representation, reducing the chances of an overflow, especially if `cfs_time_current()` returns positive values.
    - **Assumption:**  The patch assumes that `cfs_time_current()` returns a value that can be safely represented within the range of an `unsigned long`.

**Step 3: Additional Considerations**

- **Data Type Compatibility:** It's crucial to ensure that changing `this_ping` to `unsigned long` doesn't introduce compatibility issues with how it's used in other parts of the code, particularly within `pinger_check_timeout`. 
- **Underlying API:** Understanding the behavior and return type of `cfs_time_current()` is vital. The patch assumes it returns a value suitable for unsigned arithmetic. Consulting the API documentation is essential. 

**In Conclusion**

The patch attempts to mitigate a potential integer overflow by using an unsigned data type for time representation. However, thorough code review and analysis of `cfs_time_current()` are necessary to ensure the patch's effectiveness and avoid unintended consequences. 



Q: Given the following code slice:
```
1 MONGO_EXPORT void *bson_malloc( int size ) {
2     void *p;
3     p = bson_malloc_func( size );```
which has a CWE-190 vulnerability at line:
```
3     p = bson_malloc_func( size );
```
Please generate the patch for the vulnerability. Please follow the patch format in the exemplars.
Let's break down why this code snippet might have a CWE-190 (Integer Overflow or Wraparound) vulnerability and how the patch addresses it.

**Step 1: Vulnerability Analysis**

* **Data Type Mismatch:** The core issue likely stems from the use of `int` for the `size` parameter.  `int` has a limited range (typically -2,147,483,648 to 2,147,483,647 on a 32-bit system). If a very large value is passed to `bson_malloc`, larger than the maximum value an `int` can hold, it could lead to an integer overflow. 

* **Integer Overflow Consequence:**  In an integer overflow, the value wraps around.  For example, if `int`'s max value is 2,147,483,647 and you add 1, it might become -2,147,483,648. This wrapped-around value, when passed to `bson_malloc_func`, would be significantly smaller than intended.

* **Memory Allocation Problem:**  `bson_malloc_func` would then try to allocate a very small chunk of memory (due to the wrapped-around size).  Subsequent operations attempting to use this under-allocated memory would lead to buffer overflows or other memory corruption issues.

**Step 2: Patch Explanation**

The patch is deceptively simple but addresses the root cause:

```diff
- MONGO_EXPORT void *bson_malloc( int size ) {
+ MONGO_EXPORT void *bson_malloc( size_t size ) {
```

* **`size_t` to the Rescue:** The key change is replacing `int` with `size_t`. The `size_t` type is designed to represent the size of objects in memory. It is **unsigned** (meaning it can't hold negative values) and is typically as large as the system's address space.  

* **Preventing Overflow:**  By using `size_t`, the code is better equipped to handle large allocation requests. Overflow is less likely because `size_t` can accommodate much larger values than `int`.

**In summary:** The original code had a vulnerability where large allocation requests could lead to an integer overflow, resulting in insufficient memory allocation. The patch replaces `int` with `size_t`, which can handle the size of memory objects more appropriately, significantly reducing the risk of an integer overflow. 



Q: Given the following code slice:
```
1 int lstcon_rpc_trans_interpreter(lstcon_rpc_trans_t *trans, struct list_head *head_up, lstcon_rpc_readent_func_t readent)
3     struct list_head tmp;
4     struct list_head *next;
7     lstcon_rpc_t *crpc;
10     cfs_duration_t dur;
14     next = head_up;
17         if (copy_from_user(&tmp, next, sizeof(list_head)))
21         if (tmp.next == head_up)
30         dur = (cfs_duration_t)cfs_time_sub(crpc->crp_stamp, (cfs_time_t)console_session.ses_id.ses_stamp);```
which has a CWE-190 vulnerability at line:
```
30         dur = (cfs_duration_t)cfs_time_sub(crpc->crp_stamp, (cfs_time_t)console_session.ses_id.ses_stamp);
```
Please generate the patch for the vulnerability. Please follow the patch format in the exemplars.
Let's break down the CWE-190 vulnerability (Integer Overflow or Wraparound) and the reasoning behind the provided patch.

**Step 1: Understanding the Vulnerability**

* **CWE-190 (Integer Overflow/Wraparound):** This vulnerability occurs when an arithmetic operation attempts to create a numeric value that is outside the representable range of the data type. This can lead to unexpected behavior, including:
    * **Wraparound:** The value "wraps around" to the other end of the representable range. For example, adding 1 to the maximum value of an unsigned integer will result in 0.
    * **Truncation:**  The most significant bits of the result are discarded, leading to data loss.

* **The Vulnerable Code:**
   ```c
   dur = (cfs_duration_t)cfs_time_sub(crpc->crp_stamp, (cfs_time_t)console_session.ses_id.ses_stamp); 
   ```

   The vulnerability likely arises from the subtraction operation (`cfs_time_sub`) involving time values. If the difference between `crpc->crp_stamp` and `console_session.ses_id.ses_stamp` is very large (either a positive or negative difference), it could exceed the maximum or minimum values representable by the `cfs_duration_t` type. 

**Step 2: Analyzing the Patch**

* **The Patch:**
   ```c
   dur = (cfs_duration_t)cfs_time_sub(crpc->crp_stamp, (unsigned long)console_session.ses_id.ses_stamp);
   ```

* **Reasoning:** The patch casts `console_session.ses_id.ses_stamp` to `unsigned long`. Here's why this might help:

   1. **Promoting to a Larger Type:**  `unsigned long` is often a larger data type than `cfs_time_t`. By promoting one of the operands to a larger type, the subtraction operation has a greater range before an overflow or wraparound occurs. This reduces the likelihood of the vulnerability.

   2. **Implicit Type Conversion:** When you perform arithmetic on mixed data types, C will often implicitly convert the smaller type to match the larger type before the operation. By casting to `unsigned long`, the patch ensures that the subtraction is performed using a larger data type throughout the calculation.

**Important Considerations**

* **Underlying Types:** The effectiveness of this patch relies on the assumption that `unsigned long` provides a larger representable range than `cfs_time_t` and `cfs_duration_t`.  To be absolutely certain, you would need to examine the definitions of these types.

* **Potential Overflow in `cfs_time_sub`:**  It's crucial to understand how the `cfs_time_sub` function itself handles potential overflows. Does it have internal checks or return error values? If not, even with the cast, an overflow in `cfs_time_sub` could still lead to incorrect results.

**In Summary**

The patch attempts to mitigate the CWE-190 vulnerability by promoting one of the operands to a potentially larger data type before the subtraction. This expands the range of values that can be safely handled. However, a thorough analysis of the data types and the `cfs_time_sub` function's behavior is essential to ensure the fix is robust. 



Q: Given the following code slice:
```
1 void *bson_realloc( void *ptr, int size ) {
2     void *p;
3     p = bson_realloc_func( ptr, size );```
which has a CWE-190 vulnerability at line:
```
3     p = bson_realloc_func( ptr, size );
```
Please generate the patch for the vulnerability. Please follow the patch format in the exemplars.
## Reasoning for CWE-190 Patch in `bson_realloc`

Here's a breakdown of the reasoning behind the patch for the CWE-190 (Integer Overflow or Wraparound) vulnerability:

**Step 1: Root Cause Analysis**

- **Data Type Mismatch:** The vulnerability stems from the use of an `int` for the `size` parameter. 
    - `int` has a limited range (typically 32 bits, representing values from -2,147,483,648 to 2,147,483,647).
    - Memory allocation functions like `bson_realloc_func` (and likely the underlying `realloc`) typically expect a `size_t` for the size argument. `size_t` is an unsigned integer type designed to hold the maximum size of an object, often 64 bits, providing a much larger range.

- **Potential Overflow:** If a very large value is passed as the `size` argument (exceeding the maximum value representable by an `int`), it can lead to an integer overflow.  

    - **Scenario:** Imagine `size` receives a value intended to represent a massive memory allocation. Due to the `int` limitation, this value could wrap around to a very small positive number or even a negative number.

    - **Consequences:** This misrepresented size is then passed to `bson_realloc_func`, potentially resulting in:
        - **Heap Corruption:** `bson_realloc_func` might allocate a much smaller memory block than intended, leading to a buffer overflow when the calling code attempts to use the allocated space.
        - **Security Vulnerabilities:** Heap corruption is a serious security risk, potentially allowing attackers to overwrite critical data or execute arbitrary code.

**Step 2: Fixing Strategy**

- **Use the Correct Data Type:** The most effective fix is to change the data type of the `size` parameter from `int` to `size_t`. This directly addresses the root cause by ensuring the function can handle the full range of memory allocation sizes.

**Patch Explanation**

```diff
--- a/bson_realloc.c
+++ b/bson_realloc.c
@@ -1,4 +1,4 @@
-1 void *bson_realloc( void *ptr, int size ) {
+1 void *bson_realloc( void *ptr, size_t size ) {
 2     void *p;
 3     p = bson_realloc_func( ptr, size );
 ```

By changing `int size` to `size_t size`, the code now:

1. **Accepts Larger Allocation Requests:** It can handle allocation requests up to the maximum supported by the system.
2. **Maintains Compatibility:** Uses the data type expected by `bson_realloc_func` (and likely `realloc`), preventing potential misinterpretations of the requested size. 

**In Summary:** This patch is a crucial fix that eliminates the integer overflow vulnerability and makes the `bson_realloc` function more robust and secure. 



Q: Given the following code slice:
```
1 static int ks7010_upload_firmware(struct ks_sdio_card *card)
8     int length;```
which has a CWE-190 vulnerability at line:
```
8     int length;
```
Please generate the patch for the vulnerability. Please follow the patch format in the exemplars.
Let's analyze the patch and why it addresses a potential CWE-190 (Integer Overflow or Wraparound) issue.

**Step 1: Root Cause Analysis**

* **Unclear Variable Purpose:**  Line 8 declares `int length;` without immediate initialization. We need more context to understand how `length` will be used within the `ks7010_upload_firmware` function. 
* **Potential for Unsigned Data:** The function name `ks7010_upload_firmware` suggests it deals with firmware data. Firmware sizes are inherently non-negative values.  Using a signed integer (`int`) to represent a length or size that should always be positive introduces the risk of misinterpreting values if they wrap around the maximum value of a signed integer.

**Step 2: Vulnerability – CWE-190**

* **Integer Overflow/Wraparound:**  If `length` is used to store the size of the firmware being uploaded, and the firmware size is very large (approaching the maximum value of a signed integer), an arithmetic operation on `length` could cause it to become negative. This negative value, when treated as an unsigned length, would lead to incorrect behavior and potential vulnerabilities.

**Step 3: Patch Rationale**

* **Using `unsigned int`:** Changing the declaration to `unsigned int length;` ensures that `length` can only hold non-negative values. This directly mitigates the risk of:
    * **Misinterpretation:** The code will no longer treat a potentially wrapped-around negative value as a valid length.
    * **Unexpected Behavior:** Calculations involving `length` are less likely to result in unintended negative values, reducing the chances of logic errors or vulnerabilities.

**Additional Considerations**

* **Context is Crucial:** While this patch addresses the potential CWE-190 issue highlighted, it's important to analyze the entire `ks7010_upload_firmware` function to ensure that:
    * `length` is used consistently as an unsigned value throughout the code.
    * There are checks to prevent other integer overflow possibilities (e.g., when reading the firmware size, performing calculations with `length`, etc.).

**In essence, the patch promotes safer handling of data that represents lengths or sizes by enforcing non-negative values and reducing the vulnerability to integer overflow or wraparound issues.** 
