kernel/bpf/verifier.c

2729 	struct btf *desc_btf;
2780 	desc_btf = find_kfunc_desc_btf(env, offset);
2781 	if (IS_ERR(desc_btf)) {
2783 		return PTR_ERR(desc_btf);
2794 	func = btf_type_by_id(desc_btf, func_id);
2800 	func_proto = btf_type_by_id(desc_btf, func->type);
2807 	func_name = btf_name_by_offset(desc_btf, func->name_off);
2839 	err = btf_distill_func_proto(&env->log, desc_btf,
3406 	struct btf *desc_btf;
3411 	desc_btf = find_kfunc_desc_btf(data, insn->off);
3412 	if (IS_ERR(desc_btf))
3415 	func = btf_type_by_id(desc_btf, insn->imm);
3416 	return btf_name_by_offset(desc_btf, func->name_off);
12057 	struct btf *desc_btf;
12065 	desc_btf = find_kfunc_desc_btf(env, insn->off);
12066 	if (IS_ERR(desc_btf))
12067 		return PTR_ERR(desc_btf);
12070 	func = btf_type_by_id(desc_btf, func_id);
12071 	func_name = btf_name_by_offset(desc_btf, func->name_off);
12074 	func_proto = btf_type_by_id(desc_btf, func->type);
12076 	kfunc_flags = btf_kfunc_id_set_contains(desc_btf, func_id, env->prog);
12082 	meta->btf = desc_btf;
12106 	struct btf *desc_btf;
12117 	desc_btf = meta.btf;
12238 	t = btf_type_skip_modifiers(desc_btf, meta.func_proto->type, NULL);
12255 		ptr_type = btf_type_skip_modifiers(desc_btf, t->type, &ptr_type_id);
12360 				regs[BPF_REG_0].btf = desc_btf;
12363 				ret_t = btf_type_by_id(desc_btf, meta.arg_constant.value);
12372 				regs[BPF_REG_0].btf = desc_btf;
12422 				if (!IS_ERR(btf_resolve_size(desc_btf, ptr_type, &sz))) {
12428 				ptr_type_name = btf_name_by_offset(desc_btf,
12450 			regs[BPF_REG_0].btf = desc_btf;
12491 		t = btf_type_skip_modifiers(desc_btf, args[i].type, NULL);