initramfs generators rely on "pre" softdeps (and "depends") to include additional required modules. f2fs does not declare "pre: crc32" softdep. Then every generator (dracut, mkinitcpio...) has to maintain a hardcoded list for this purpose. Hence please use MODULE_SOFTDEP("pre: crc32") in f2fs code.
Was fixed with below commit, so close this issue. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0dd571785d61528d62cdd8aa49d76bc6085152fe
*** Bug 187471 has been marked as a duplicate of this bug. ***