Attaching without sudo

[bmac3]

Hello, thanks so much for this library, it's saved me a ton of time and headaches.

I'm running into an issue regarding the CUDA C++: Attach configuration. When I try to attach to a process, I get the error Please try running echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope. I'm not able to change the /proc/sys/kernel/yama/ptrace_scope on the machine I'm working on since I don't have sudo privileges. According to the documentation for Yama, however, it should be possible to allow ptracing of specific processes using prctl(PR_SET_PTRACER, pid, ...) even if the ptrace_scope of the system is set differently. I can confirm that running this command allows cuda-gdb to attach to non-child processes. The only trouble is that attaching nsight-vscode with the CUDA C++: Attach still yields the same Please try running echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope error. It seems that @huynhducloi00 also ran into this issue (#6 #3). Is there any chance this can be fixed?

[bmac3]

I think this bit of code in cudaGdbSession.ts seems to be the culprit. It assumes that if /proc/sys/kernel/yama/ptrace_scope is not set to 0 then the process cannot be traced, which is not true if prctl(PR_SET_PTRACER, pid, ...) is used. I forked the repo and commented out these lines and it works fine for me now.

    const ptraceScopeFile = '/proc/sys/kernel/yama/ptrace_scope';
    if (fs.existsSync(ptraceScopeFile)) {
        const ptraceScope = fs.readFileSync(ptraceScopeFile, 'ascii');
        const ptraceLocked = ptraceScope.trim() !== '0';

        if (ptraceLocked) {
            response.success = false;
            response.message = 'Please try running echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope ';
            logger.verbose(response.message);
            this.sendErrorResponse(response, 1, response.message);
        }
    }