Why are there so many '[unknown]' address info while using uprobe?

[zhanweiw]

I installed 'adeb' tool in Android R platform, I've enabled the below kernel config:

CONFIG_IKHEADERS=m
CONFIG_BPF_JIT=y
CONFIG_BPF=y
CONFIG_BPF_SYSCALL=y
CONFIG_BPF_JIT_ALWAYS_ON=y
CONFIG_HAVE_EBPF_JIT=y
CONFIG_BPF_EVENTS=y
CONFIG_KPROBES=y
CONFIG_KPROBE_EVENTS=y
CONFIG_UPROBES=y
CONFIG_UPROBE_EVENTS=y
CONFIG_TRACEPOINTS=y
CONFIG_PREEMPTIRQ_EVENTS=y

But while I running the below command to catch the kernel & user space call stack, I found most of the user space call stack was marked with [unknown]. Are there any way to fix this issue? Thanks in advance.

trace 'do_sys_open "%s", arg2' -T -K -U > trace.txt

Part of the abnormal call stack info(I've attached the trace.txt):

17:51:04 1093 2027 InputReader do_sys_open /dev/pmsg0
do_sys_open+0x0 [kernel]
el0_svc_common+0xa0 [kernel]
el0_svc_handler+0x78 [kernel]
el0_svc+0x8 [kernel]
__openat+0x8 [libc.so]
[unknown] [liblog.so]
__android_log_bwrite+0x88 [liblog.so]
[unknown] [libandroid_runtime.so]
[unknown] [boot-framework.oat]
......
17:51:05 1093 24670 Binder:1093_1D do_sys_open /dev/pmsg0
do_sys_open+0x0 [kernel]
el0_svc_common+0xa0 [kernel]
el0_svc_handler+0x78 [kernel]
el0_svc+0x8 [kernel]
__openat+0x8 [libc.so]
[unknown] [liblog.so]
[unknown] [liblog.so]
__android_log_logd_logger+0x7c [liblog.so]
[unknown] [libbase.so]
[unknown] [libbase.so]
std::__1::__function::__func<art::InitLogging(char**, void (&)(char const*))::LogdLoggerLocked, std::__1::allocator<art::InitLogging(char**, void (&)(char const*))::LogdLoggerLocked>, void (android::base::LogId, android::base::LogSeverity, char const*, char const*, unsigned int, char const*)>::operator()(android::base::LogId&&, android::base::LogSeverity&&, char const*&&, char const*&&, unsigned int&&, char const*&&)+0x74 [libartbase.so]
[unknown] [libbase.so]
__android_log_buf_write+0xbc [liblog.so]
[unknown]
[unknown]
[unknown]
[unknown]
[unknown]
[unknown]
......
17:51:12 3749 4577 AsyncTask #2 do_sys_open /dev/pmsg0
do_sys_open+0x0 [kernel]
el0_svc_common+0xa0 [kernel]
el0_svc_handler+0x78 [kernel]
el0_svc+0x8 [kernel]
[unknown]
[unknown]
[unknown]
[unknown]
[unknown]
[unknown]
[unknown]
[unknown]
[unknown]
[unknown]