When using systemtap with overlay filesystem, we need to get real inode and pass it into uprobe_register function. Otherwise, there will be an inode error. To fix the problem, we need to modify 4 places in runtime/linux/uprobes-inode.c file to let systemtap get the real inode value. The following is the way to support this feature.

733c733
---                     inode = vm_file->f_path.dentry->d_inode;
+++                     inode = d_real_inode(vm_file->f_path.dentry);
915c915
---     p->inode = dentry->d_inode;
+++     p->inode = d_real_inode(dentry);
928c928
---                          offset, vm_flags, dentry->d_inode);
+++                          offset, vm_flags, d_real_inode(dentry));
938c938
---   rc = stapiu_change_semaphore_plus(c, task, addr, dentry->d_inode);
+++   rc = stapiu_change_semaphore_plus(c, task, addr, d_real_inode(dentry));