4744 	struct bpf_func_state *caller, *callee;  in check_func_call()  local
4795 	callee = kzalloc(sizeof(*callee), GFP_KERNEL);  in check_func_call()
4796 	if (!callee)  in check_func_call()
4798 	state->frame[state->curframe + 1] = callee;  in check_func_call()
4804 	init_func_state(env, callee,  in check_func_call()
4811 	err = transfer_reference_state(callee, caller);  in check_func_call()
4819 		callee->regs[i] = caller->regs[i];  in check_func_call()
4833 		print_verifier_state(env, callee);  in check_func_call()
4841 	struct bpf_func_state *caller, *callee;  in prepare_func_exit()  local
4845 	callee = state->frame[state->curframe];  in prepare_func_exit()
4846 	r0 = &callee->regs[BPF_REG_0];  in prepare_func_exit()
4864 	err = transfer_reference_state(caller, callee);  in prepare_func_exit()
4868 	*insn_idx = callee->callsite + 1;  in prepare_func_exit()
4871 		print_verifier_state(env, callee);  in prepare_func_exit()
4876 	free_func_state(callee);  in prepare_func_exit()