PTRACE_TRACEME error "Operation not permmited"

Aviel15

4/8/24, 10:28 PM

I am trying to use PTRACE_TRACEME to trace the child process:

if (ptrace(PTRACE_TRACEME, 0, NULL, NULL) == -1) {
   perror("ptrace_traceme");
   exit(EXIT_FAILURE);
}

And I got the error:

ptrace_traceme: Operation not permitted

As I understood the reason for the issue is security features.

I tried changing from - kernel.yama.ptrace_scope = 1 to: kernel.yama.ptrace_scope = 0.

I also checked that SELinux is disabled. About strace, I saw that strace can solve that problem but I didn't understand how, something with: strace -f ./program_name.

In addition, I run the program as a root and the problem was still not fixed, I start to think that the problem is not related to security features.

BTW, I am using Ubuntu 22.04.

Thanks for your helps!

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