How can i create a buffer without using malloc() in linux kernel?

Question

How can I create a buffer in linux kernel without malloc() function (or calloc()) and clean buffer without free() function?

Answer 1

You cannot use standard c library functions like malloc() or calloc() inside the kernel, The code you write in kernel links to the functionality provided by the kernel itself.

You can use kmalloc() & then free it with kfree().