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The PFN_LIST_CORRUPT bug check has a value of 0x0000004E. This indicates that the page frame number (PFN) list is corrupt.
The following parameters are displayed on the blue screen. Parameter 1 indicates the type of violation. The meaning of the other parameters depends on the value of Parameter 1.
| Parameter 1 | Parameter 2 | Parameter 3 | Parameter 4 | Cause of Error |
|---|---|---|---|---|
| 0x01 | The ListHead value which was corrupt | The number of pages available | 0 | The list head was corrupt |
| 0x02 | The entry in the list being removed | The highest physical page number | The reference count of the entry being removed | A list entry was corrupt |
| 0x07 | The page frame number | The current share count | 0 | A driver has unlocked a page more times than it locked it |
| 0x8F | New page number | Old page number | 0 | The free or zeroed page listhead is corrupt |
| 0x99 | Page frame number | Current page state | 0 | A PTE or PFN is corrupt |
This error is typically caused by drivers passing bad memory descriptor lists. For example, a driver might have called MmUnlockPages twice with the same list.
If a kernel debugger is available, examine the stack trace.