Tested on Ubuntu 22.04 (kernel 5.15). Needs kernel 5.6 at least. In such a case, LSF rewrites the syscall number in the RAX register to a "NOP" syscall number (getpid()), and handles the original ...
The minimum GLIBC version supported is included in the pkg name. You can check yours with ldd --version. RQuickShare was distributed with two version (main & legacy ...