UBIFS assert failed in ubifs_set_page_dirty at 1421

[Dave Chinner]

On Mon, Oct 20, 2014 at 04:11:59PM +0300, Artem Bityutskiy wrote:
> 3. There are exactly 2 places where UBIFS-backed pages may be marked as
> dirty:
> 
>   a) ubifs_write_end() [->wirte_end] - the file write path
>   b) ubifs_page_mkwrite() [->page_mkwirte] - the file mmap() path
> 
> 4. If anything calls 'ubifs_set_page_dirty()' directly (not through
> write_end()/mkwrite()), and the page was not dirty, UBIFS will complain
> with the assertion that you see.
> 
> > CPU: 3 PID: 543 Comm: kswapd0 Tainted: P           O 3.10.0_s40 #1

Kernel is tainted. Not worth wasting time on unless it can be
reproduced on an untainted kernel...

Cheers,

Dave.
-- 
Dave Chinner
david at fromorbit.com