问运行PAM函数时出现分段故障

EN

#define PY_SSIZE_T_CLEAN
#define PAM_SM_AUTH
#define PAM_SM_ACCOUNT
//#define PAM_SM_SESSION

#include <dlfcn.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <security/pam_appl.h>
#include <security/pam_modules.h>
#include </usr/include/python3.6m/Python.h>

/* expected hook */
/*
PAM_EXTERN int pam_sm_setcred( pam_handle_t *pamh, int flags, int argc, const char **argv ) {
    return PAM_SUCCESS;
}

PAM_EXTERN int pam_sm_acct_mgmt(pam_handle_t *pamh, int flags, int argc, const char **argv) {
    printf("Acct mgmt\n");
    return PAM_SUCCESS;
}
*/

/* expected hook, this is where custom stuff happens */
PAM_EXTERN int pam_sm_authenticate( pam_handle_t *pamh, int flags,int argc, const char **argv )

{
    chdir("../code/facial"); // this changes it to the correct directory to execute

    dlopen("/usr/lib/x86_64-linux-gnu/libpython3.6m.so",RTLD_LAZY | RTLD_GLOBAL);
    Py_Initialize(); // Starts python interpreter
    PyRun_SimpleString("import os\nimport sys\nsys.path.append(os.getcwd())"); // lets python know where we are


    PyObject *mymod, *func1, *ret1;


    mymod = PyImport_ImportModule("pam_detect"); // This is the .py

    if (mymod != 0){ // check if the file file was loaded
        func1 =  PyObject_GetAttrString(mymod, "detect"); // hel is the function name in the file you declared earlier
        ret1 = PyObject_CallObject(func1, NULL); // Null because the function doesnt take an argument.
        if (ret1 == 1){
            Py_Finalize();
            return PAM_SUCCESS;
        }
        else{
            Py_Finalize();
            return PAM_AUTH_ERR;

        }

    }

    else{
            //printf("Error: can't find file!\n");
            return 1;
    }

    Py_Finalize();

    return 0;
}