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

From: Bartosz Golaszewski
Date: Mon Nov 13 2023 - 15:54:03 EST


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.

Bartosz