Invalid Deallocation
Occurs when an application calls a deallocation function with an address that does not correspond to dynamically allocated memory.
ID | Code location | Description |
|---|---|---|
1 | Invalid deallocation site | Represents the location from which the invalid call to a deallocation function was made. |
C Examples/Windows* OS
int x = 1; int *p = &x; VirtualFree(p, 1, MEM_DECOMMIT);
void *p = VirtualAlloc(NULL,1,MEM_COMMIT,PAGE_READWRITE); VirtualFree(p,1,MEM_DECOMMIT); VirtualFree(p,1,MEM_DECOMMIT);
C Example/Linux* OS
void *p = mmap(NULL, 8, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0); munmap(p, 8); munmap(p, 8);
Possible Correction Strategies
If | Do This |
|---|---|
This code location should free memory. | Change the code to pass in dynamically allocated memory. |
This code location does not need to free memory. | Remove the call to the deallocation function. |