UBI leb_write_unlock NULL pointer Oops (continuation)

[Bill Pringlemeir]

On 24 Feb 2014, bpringlemeir at nbsps.com wrote:

> /* could reschedule here... */
> on 'if (vol->eba_tbl[lnum] != from)' another thread has this
> 'ltree_entry' so count is >1.
> /* could reschedule here... */

Sorry, maybe that is not true.  I don't know enough about the logic of
ubi_eba_copy_leb().  Another thread has at least changed the physical
map.  It may/may not still have the rwsemaphore.