Mat wrote:
> Hi Edward,
>
> this one's the kernel-config for the second (posted) error:
>   

Yup, it seems to be a bug: reiser4_set_page_dirty_internal() didn't
take care about disabling preemption, while per-cpu stuff needs this.
I wonder why nobody did report it earlier. It requires CONFIG_PREEMPT=y
and CONFIG_DEBUG_PREEMPT=y though..

A possible fixup is attached.

Thank to everyone.
Edward.