Re: [PATCH] ftrace: Add missing check for existing hwlat thread

[Steven Rostedt]

On Wed, 1 Aug 2018 21:59:38 +0200 (CEST)
Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:

> > This looks like it is treating the symptom and not the disease.  
> 
> My bad. We looked at the other instances of tracers and they all have
> protection against this kind of call sequence ...

Probably because they were all fixing the symptom ;-)

I'm going to keep Erica's patch and add a WARN_ON() to it just in case.
But can you still check if the patch I gave fixes it too?

-- Steve