On Wed, Sep 12, 2018 at 12:17:35AM +0100, David Howells wrote: > Guenter Roeck <linux@xxxxxxxxxxxx> wrote: > > > [ 8.507672] RIP: 0010:reconfigure_super+0x47/0x210 > > Can you tell me the file and line this corresponds to? > I don't know, but some debugging shows that fc->ops == NULL. Guenter