Hi all, On Fri, 19 Mar 2021 15:30:31 +0100 Heiko Carstens <hca@xxxxxxxxxxxxx> wrote: > > This breaks now on s390 with commit 8ef6f74a3571 ("Rust support"). > make modules_install / depmod now fails with: > > depmod: WARNING: /.../lib/modules/5.12.0-rc3-00001-g8ef6f74a3571/kernel/drivers/s390/scsi/zfcp.ko needs unknown symbol > > for every module (yes, the line is complete). Daniel Axtens reported the same breakage on powerpc. I bisected it to the same commit. More experimentation shows that if you reverse just the change to include/linux/moduleparam.h the above warnings go away. So -#define MAX_PARAM_PREFIX_LEN (256 - sizeof(unsigned long)) +#define MAX_PARAM_PREFIX_LEN (64 - sizeof(unsigned long)) fixes it up. Not sure what that does to the rust support ... -- Cheers, Stephen Rothwell