On Wed, Aug 16, 2023 at 05:14:39PM +1000, Stephen Rothwell wrote: > Hi Randy, > > On Tue, 15 Aug 2023 22:34:19 -0700 Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote: > > > > I have spent some time on this but I don't see where the problem is. > > > > ERROR: modpost: "bdev_mark_dead" [drivers/s390/block/dasd_mod.ko] undefined! > > > > CONFIG_BLOCK=y, bdev.o is built and contains the missing symbol. > > > > Full randconfig file is attached. > > > > Hopefully I'm just overlooking something. > > In your config, CONFIG_DASD=m which means "#ifdef CONFIG_DASD" will > fail since CONFIG_DASD_MODULE is defined instead ... so maybe it should > be "#if IS_ENABLED(CONFIG_DASD)" in block/bdev.c. This also fails an > s390 allmodconfig build (obviously). > > So this is caused by commit > > 381f678306ce ("block: consolidate __invalidate_device and fsync_bdev") > > from the vfs-brauner branch in linux-next. Thanks for reporting this everyone. Fixed in-tree.