Re: Bug: fio traps into kernel without exiting because futex has adeadloop

From: Thomas Gleixner
Date: Fri Jun 12 2009 - 04:13:06 EST


On Fri, 12 Jun 2009, Zhang, Yanmin wrote:
> On Thu, 2009-06-11 at 13:36 +0200, Peter Zijlstra wrote:
> > FWIW, using a private futex on a shm section is wrong in and of itself.
>
> What I mean is it could be used as a DOS attack.

Right. Fix is on the way.

> Did you try my test case? Could you kill it when it runs?

No, you can not kill it. That's why it needs a proper fix. Will send
out today.

Thanks,

tglx
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/