Last zsh update break modprobe & modinfo completion because of some modifications in '/usr/share/zsh/functions/Completion/Linux/_modutils' (line 110):

modules=( $modules_dir/$kver/(*~(source|build))/**/*.(o|ko)(.:t:r) ) # in zsh 4.3.12 (last version)

modules=( $modules_dir/$kver/(*~(source|build))/**/*(.:t:r) ) # in zsh 4.3.11 (previous)


modifying this line like that solves 2 problems, zsh finds the modules and remove all the suffixes in the completion menu :

modules=( $modules_dir/$kver/(*~(source|build))/**/*.(o|ko|ko.gz)(.:t:r:r) )

Discussion in this thread : https://bbs.archlinux.org/viewtopic.php?id=120666

PS : sorry for my poor English.