Re: Linux 6.3-rc2

[Frederic Weisbecker]

Le Mon, Mar 13, 2023 at 04:17:06PM -0700, Linus Torvalds a écrit :
> On Mon, Mar 13, 2023 at 4:11 PM Frederic Weisbecker <frederic@xxxxxxxxxx> wrote:
> >
> > So the hardirq interrupted some code that has softirqs disabled (or
> > servicing) from the preempt mask POV but not from lockdep POV.
> 
> .. but those are two different counters, so isn't that *always* racy?
> IOW, one counter being updated before the other...
> 
> IOW, isn't this *why* that check isn't supposed to ever trigger at all
> from hard-irq context?

Right but these two values are always modified within the same IRQs
disabled section.