Re: [PATCH v2] arm64: Enable KCSAN

[Kefeng Wang]

On 2021/12/2 18:58, Marco Elver wrote:
> On Thu, 2 Dec 2021 at 11:45, Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> wrote:
> [...]
> > > > for now and more explanation into changlog.
> > > So what I gather arm64's final select line may look like:
> > >
> > >        select HAVE_ARCH_KCSAN if EXPERT && (CC_IS_GCC || CLANG_VERSION >= 120000)
> > Yes,  that's what we want now.
> I think we have all the pieces sorted out, so hopefully you have
> everything you need to do v3.
OK, I will resend v3.
> [...]
> > > I actually have a "fix" for the data race in rwsem_spin_on_owner, that
> > > also shows where the other racing access comes from... which reminds me:
> > > https://lkml.kernel.org/r/20211202101238.33546-1-elver@xxxxxxxxxx
> > There's a owner_on_cpu(),  we could reuse it,
> That looks like a reasonable thing to do, but can't say if it is
> actually the right thing to do. You could suggest it in reply to the
> patch I just sent and see what people say.
Could you cc me, I can't reply email due to no subscribe to mailing 
list, thanks.