my system:
$modprobe -l crc*
kernel/lib/crc-ccitt.ko
kernel/lib/crc-itu-t.ko
kernel/lib/crc7.ko
kernel/lib/crc8.ko
------------------------------------------------------------------
Online example (source: http://linux.101hacks.com/unix/modprobe/ ):
$modprobe -l crc*
kernel/arch/x86/crypto/crc32c-intel.ko
kernel/crypto/crc32c.ko
kernel/lib/crc-ccitt.ko
kernel/lib/crc-itu-t.ko
kernel/lib/crc7.ko