Comment by wfn

By looking at /proc/kallsyms:

  grep commit_creds /proc/kallsyms
  grep prepare_kernel_cred /proc/kallsyms

Then update addresses as shown in one of the code snippets:

  _commit_creds commit_creds = 0xffffffff81094250;
  _prepare_kernel_cred prepare_kernel_cred = 0xffffffff81094550;