Requirements

• option for ptrace to attaching other process.

echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope

known issue.

• current working directory path is '/home/m/test/uftrace'. if run uftrace with dynamic feature, we do not guarantee successful execution.

trigger must update to find absolute path of libmcount. 

• could not load 'libmcount-dynamic.so' directly. do not know why it does not working.

Library file path : /home/m/test/uftrace/libmcount/libmcount-dynamic.so
continue
__libc_dlopen_mode
instead of expected SIGTRAP, target stopped with signal 11: Segmentation fault
sending process 8238 a SIGSTOP signal for debugging purposes