Re: [Xenomai-core] [FIX] Summary: Xenomai 2.3.2 and 2.4 lock-ups and OOPSes

[Peter Soetens <peter.soetens@domain.hid>]

On Saturday 15 September 2007 20:52:59 Philippe Gerum wrote:
> On Fri, 2007-09-07 at 11:27 +0200, Peter Soetens wrote:
> > Just in case you hooked off the long discussion about the issues we found
> > from Xenomai 2.3.2 on:
> >
> >   o We are using the xeno_native skin, create Xeno tasks and semaphores,
> > but have strong indications that the crashes are caused by the memory
> > allocation scheme of Xenomai in combination with task creation/deletion
> >   o We found two ways to break Xenomai, causing a 'Killed'
> > (rt_task_delete) and causing an OOPS (rt_task_join).
> >   o They happen on 2.6.20 and 2.6.22 kernels
> >   o On the 2.3 branch, r2429 works, r2433 causes the faults. The patch is
> > small, and in the ChangLog:
>
> Please try this patch against v2.3.x. A double free issue on a task TCB
> already scheduled for memory release was causing all sorts of troubles,
> basically trashing the system heap afterwards:

Thanks, we'll try, test and report ASAP (= somewhere this week.)

Peter
-- 
Peter Soetens -- FMTC -- <http://www.fmtc.be>