Jun 27 09:26:54 ccscm-002 xmsim: *** Error in `xmsim': double free or corruption (fasttop): 0x0000000014985790 ***

The error message you've provided indicates a problem in the `xmsim` program, which is running on a system with the hostname 'ccscm-002' at 09:26:54 on June 27th. The specific error is a "double free or corruption" and references an address `0x0000000014985790`. This suggests that there was an attempt to free memory twice, which can lead to memory corruption because the first free operation might not have fully released the memory.

In software development, a double-free error typically occurs when a pointer is accidentally set to NULL after being freed, and then it's attempted to be freed again. It could happen due to bugs in the code, like not keeping track of ownership of memory properly, or improper use of dynamic memory allocation functions like `malloc` or `free`.

To debug this issue, developers would need to examine the following steps:
1. Check for any memory management issues: Look at the code responsible for allocating and freeing memory around the error location.
2. Use a debugger: Analyze the call stack at the time of the crash to identify the function that caused the double free.
3. Review recent changes: If the error appeared recently, consider if any recent updates to the codebase might have introduced the bug.
4. Memory leak detection: Ensure there are no unintentional memory leaks that could lead to unexpected frees.