Re: [ANNOUNCE] v4.11.5-rt1

From: Mike Galbraith
Date: Mon Jun 19 2017 - 12:30:04 EST

On Mon, 2017-06-19 at 10:41 -0400, Steven Rostedt wrote:
> On Mon, 19 Jun 2017 16:13:41 +0200
> Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx> wrote:
> > > Hmm, it shouldn't affect futexes, as it's only called by rtmutex when
> > > waiter->savestate is true. And that should always be false for futex.
> >
> > you still have sleeping locks like the hb-lock (which might matter in
> > case the task blocks on the lock and does not continue for some reason).
> But then I'd expect this to be an issue with any spinlock in the kernel.

Thing to do is set a trap for the bugger. ÂI'll give that a go after I
get some beans/biscuits work done. ÂFor the nonce, what I've reported
is all I know.