On Wed, Jun 28, 2006 at 09:32:56PM +0200, Ingo Molnar wrote:
>
> * Dipankar Sarma <[email protected]> wrote:
>
> > Turns out that kprobe_flush_task() is called from finish_task_switch()
> > with preemption disabled and it uses a converted spin lock. The
> > following patch fixed the problem for me and I was able to boot my
> > x86_64 box.
>
> ah, subtle problem and nice fix! We are using an RCU trick to delay task
> freeing in finish_task_switch(), but kprobe_flush_task() isnt done in
Yes, otherwise it would have been hell to do __put_task_struct()
with preemption disabled.
> put_task_struct(). [neither would it be right to flush kprobes there.]
> I've released -rt4 with this included.
OK, I need to catch up, but I see a lot of oops while running rcutorture
in my box (rt1). I am investigating this atm.
Thanks
Dipankar
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