How can I get perf to find symbols in my program

Question

When using perf report, I don\'t see any symbols for my program, instead I get output like this:

$ perf record /path/to/racket ints.rkt 10000
$ pe         


        

Answer 1

you can check the value of kptr_restrict by cat /proc/kallsyms. If the addresses of the symbols in the result are all 0x000000, you can fix it by command echo 0 > sys/kernel/kptr_restrict . After this , you may get a wanted result of the perf report

Answer 2

In my case the solution was to delete the elf files which contained cached symbols from previous builds and were messing things up.

They are in ~/.debug/ folder