Re: [PATCH 2/2] genirq: proc: fix a procfs entry leak

From: Greg Kroah-Hartman
Date: Tue Nov 14 2023 - 07:28:03 EST


On Mon, Nov 13, 2023 at 09:53:47PM +0100, Bartosz Golaszewski wrote:
> On Fri, Sep 15, 2023 at 9:50 PM Bartosz Golaszewski <brgl@xxxxxxxx> wrote:
> >
>
> [snip]
>
> >
> > My point is: the same rule should apply to in-kernel consumers. When
> > they request a resource, they get a reference to it. The resource is
> > managed by its provider. If the provider is going down, it frees the
> > resource. The consumer tries to use it -> it gets an error. I'm not
> > convinced by the life-time rules argument. The consumer is not
> > CREATING a resource. It's REQUESTING it for usage. IMO this means it
> > REFERENCES it, not OWNS it. And so is only responsible for putting the
> > reference.
> >
> > Bartosz
> >
>
> Hi Thomas, Greg et al,
>
> I am at LPC and will present a talk on Wednesday 5:15pm at the kernel
> summit about object life-time issues. I'll reference this problem
> among others. Please consider it in your schedules, I think it'll be
> useful to discuss it in person as it's a generic problem in many
> driver subsystems.

Sounds great, I'll try to make it there!

greg k-h