On Thu, Jul 29, 2021 at 1:59 AM Yonghong Song [off-list ref] wrote:

quoted

+static int bpf_fill_long_jmp(struct bpf_test *self)
+{
+     unsigned int len = BPF_MAXINSNS;
+     struct bpf_insn *insn;
+     int i;
+
+     insn = kmalloc_array(len, sizeof(*insn), GFP_KERNEL);
+     if (!insn)
+             return -ENOMEM;

When insn will be freed?

It is freed by the existing test runner code. If the fill_helper
member is set, the function destroy_bpf_tests frees the insn pointer
in that test case. This is the same as with other tests that use the
fill_helper facility.