Hi Jiri and Andrii, we also have discovered this problem recently on Fedora 35 and linux-next. Is there any status update here ? @Jiri Is the increase of total kernel modules size by 20MB really a big deal on s390x ? We would like to have it enabled on our architecture again ;-) And 20MB seems okay or am i missing something maybe ? Another question i have wrt to BTF is why is it necessary to have e.g. _struct module_ be present within kernel module BTF if it is already present within vmlinux's one ? Can't the one from vmlinux be reused for kernel modules as well, they should be identical, right ? Thanks Regards Alex