leslie.polzer@xxxxxxx wrote: > I'm passing an array to a ioctl. > ioctl(2) says it needs to point at memory, so I'm allocating it. > Do I need to, or rather, am I allowed to free the memory afterwards? Yes. The kernel never retains pointers to user-space memory; it either copies the data, or finishes using it before the system call returns. > It seems I'm getting segfaults when I free the memory... You're probably overwriting the beginning of the allocated block. -- Glynn Clements <glynn@xxxxxxxxxxxxxxxxxx> - To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
