Is Memory leaked by a kernel module is returned to system when we remove that module?

Question

Suppose I have a kernel module which is loaded in to kernel dynamically. This kernel module is having some memory leak. If i remove that module the leaked memory by the module is returned to the system ? or still the memory is unavailable for usage?

Answer 1

No. There is no automatic memory collection in the kernel. If you allocate it, you're responsible for keeping track of it and releasing it before your module is unloaded.