bpf_jit_alloc_exec
image = bpf_jit_alloc_exec(PAGE_SIZE);
void *bpf_jit_alloc_exec(unsigned long size);
hdr = bpf_jit_alloc_exec(size);
pack->ptr = bpf_jit_alloc_exec(BPF_PROG_PACK_SIZE);
ptr = bpf_jit_alloc_exec(size);
d->rw_image = bpf_jit_alloc_exec(PAGE_SIZE);
image = bpf_jit_alloc_exec(PAGE_SIZE);