Trouble with l4rm_region_cache slab

[Adam Lackorzynski]

On Tue Jan 22, 2008 at 12:37:45 +0100, Marc CHALAND wrote:
> After more investigation, I've found that slab_alloc and slab_free on
> l4rm_region_cache are not all into a critical section (for example:
> l4rm_attach may be called by several threads). At first, I though
> region_list_lock aimed at that, but in fact, this is not the case.
> 
> My first idea is to put slab_alloc between l4rm_lock_region_list and
> l4rm_unlock_region_list into l4rm_region_desc_alloc. Same for
> slab_free. But I'm not sure this is a good idea. What is your opinion
> ?

You're right that the slab objects themselves were not locked. The fix
was not as easy as proposed but I think I have fixed this (update l4env
and l4rm packages). I hope this fixes your issue. Thanks for reporting,
very valuable!


Adam
-- 
Adam                 adam at os.inf.tu-dresden.de
  Lackorzynski         http://os.inf.tu-dresden.de/~adam/