just to add a detail: with lazy binding the function resolver might not even be called at all, the link tree is like sshd.elf -> systemd.so -> lzma.so. If syst

just to add a detail: with lazy binding the function resolver might not even be called at all, the link tree is like sshd.elf -> systemd.so -> lzma.so. If systemd uses a ifunc symbol in lzma but sshd is not using that symbol: if lazy binding the resolver will never run, if eager binding the resolver will run. Something the backdoor also took advantage of