Uprobe prog cant get value in map via bpf_map_lookup_elem(), while tracepoint/syscall prog can

[ciaowwxBD]

a simple map defined in ebpf prog to store golang info:

struct {
    __uint(type, BPF_MAP_TYPE_HASH);
	__type(key,  __u32);
	__type(value, struct proc_info);
	__uint(max_entries, 10240);
} go_procs SEC(".maps");

and updated in go proc:

if err := collection.Maps["go_procs"].Put(uint32(pid32), procInfoInMap); err != nil {
			log.Errorf("put proc info to map failed: %v", err)
		}

and the uprobe prog is attached successfully

if sym.Type == Uprobe {
			l, err = ex.Uprobe(sym.Symbol, uprobePrograms[sym.FuncName], nil)
		} else if sym.Type == Uretprobe {
			l, err = ex.Uretprobe(sym.Symbol, uprobePrograms[sym.FuncName], nil)
		}

the same code with same map key can get value in SEC("tracepoint/syscalls/sys_enter_connect") but cant in SEC("uprobe/runtime.execute")。uprobe prog is triggered normally

struct proc_info *go_proc_info = bpf_map_lookup_elem(&go_procs, &tgid);
	
	if (!go_proc_info) {
		return 0;
	}

and if i update the map with a temporary value in uprobe, the temporary value can be read. It seems like the map in uprobe ebpf probe is a new map. how can i get the map value in uprobe?

thanks for help

[ciaowwxBD]

collection.Maps["go_procs"].Put() should write value per CPU, i cant understand why in uprobe the value is unavilable

[ciaowwxBD]

the reason is i attach tracepoint with loadBpf -> newCollection, while attach uprobe with loadBpfObjects() -> ex.Uprobe(sym.Symbol, objs.Program, nil), maybe two ways conflict in one project. when i use common approach: loadBpf -> newCollection-> attach, it's solved.