CVE-2026-29111: validate the control group path in the
GetUnitByControlGroup D-Bus method, rejecting non-absolute or
non-normalized input to prevent stack exhaustion from an oversized,
attacker-controlled string
Skip the test-fs-util symlink touch_file check when the build kernel
does not support chmod() on a symlink (-EOPNOTSUPP), so the build's
test phase no longer aborts during the package build