Re: [PATCH] rwonce: handle KCSAN like KASAN in read_word_at_a_time()

[Marco Elver]

On Tue, 25 Mar 2025 at 17:06, Arnd Bergmann <arnd@xxxxxxxx> wrote:
>
> On Tue, Mar 25, 2025, at 17:01, Jann Horn wrote:
> > Fixes: dfd402a4c4ba ("kcsan: Add Kernel Concurrency Sanitizer infrastructure")
> > Signed-off-by: Jann Horn <jannh@xxxxxxxxxx>
>
> Acked-by: Arnd Bergmann <arnd@xxxxxxxx>

Acked-by: Marco Elver <elver@xxxxxxxxxx>

> > ---
> > This is a low-priority fix. I've never actually hit this issue with
> > upstream KCSAN.
> > (I only noticed it because I... err... hooked up KASAN to the KCSAN
> > hooks. Long story.)

Sounds exciting... ;-)

> > I'm not sure if this should go through Arnd's tree (because it's in
> > rwonce.h) or Marco's (because it's a KCSAN thing).
> > Going through Marco's tree (after getting an Ack from Arnd) might
> > work a little better for me, I may or may not have more KCSAN patches
> > in the future.
>
> I agree it's easier if Marco takes it through his tree, as this
> is something I rarely touch.
>
> If Marco has nothing else pending for 6.15, I can take it though.

I have nothing pending yet. Unless you're very certain there'll be
more KCSAN patches, I'd suggest that Arnd can take it. I'm fine with
KCSAN-related patches that aren't strongly dependent on each other
outside kernel/kcsan to go through whichever tree is closest.

Thanks,
-- Marco