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SubjectRe: WARN_ON: userstacktrace on irq events
On Fri, 5 Apr 2019 10:12:27 +0200 (CEST)
Thomas Gleixner <tglx@linutronix.de> 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

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