Re: [PATCH] tracing: zero the pipe cpumask on alloc to avoid spurious -EBUSY

[Zheng Yejian]

On 2023/9/1 04:33, Steven Rostedt wrote:
> On Thu, 31 Aug 2023 21:51:18 +0800
> Zheng Yejian <zhengyejian1@xxxxxxxxxx> wrote:
>
> > > Hi,
> > >
> > > I ran into this problem just recently on one of my test VMs immediately
> > > after updating to a v6.5 base. A revert of the aforementioned commit
> > > addressed the problem. I'm not terribly familiar with the tracing code,
> > > but on further inspection I noticed the cpumask doesn't appear to be
> > > initialized anywhere. I suppose this could alternatively do a
> > > cpumask_clear() or whatever after allocation, but either way this
> > > addresses the problem for me.
> >
> > Yes, pipe_cpumask must be initialized.
>
> Can I add a Reviewed-by tag from you?

Of course :)
Reviewed-by: Zheng Yejian <zhengyejian1@xxxxxxxxxx>

--

Thanks,
Zheng Yejian

> > > Please CC on replies as I'm not subscribed to the list. Thanks.
>
> That's the default with Linux kernel lists.
>
> -- Steve