Re: WARN_ON: userstacktrace on irq events

[Steven Rostedt]

On Fri, 5 Apr 2019 10:12:27 +0200 (CEST)
Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:

> > BOOM! Warn on.
> > 
> > Can we make that access_ok() call in the copy_stack_frame not trigger
> > the warning just if we are in an interrupt?  
> 
> You really want to have access_ok_atomic() or such which does not have the
> WARN and use that in copy_stack_frame(). That's fine here because the
> actual copy is inside a pagefault disabled region.

I was thinking the same.

Masami, did you post patches to do something like this?
"access_ok_inatomic()" or something?

-- Steve