Re: [RFC PATCH v2 00/21] KCFI support

Sami Tolvanen
2022-05-19T20:42:26Z

On Thu, May 19, 2022 at 1:26 PM Nathan Chancellor <nathan@kernel.org> wrote:
>
> On Thu, May 19, 2022 at 11:01:40AM +0200, Sedat Dilek wrote:
> > On Tue, May 17, 2022 at 8:49 PM Nathan Chancellor <nathan@kernel.org> wrote:
> > > I have run kCFI (v1, I haven't had time to test v2) on x86_64 hardware,
> > > both AMD and Intel. I have only found two failures so far: the i915
> > > issue that I mention below and a failure in the KVM subsystem, which I
> > > can see by just running QEMU:
> > >
> >
> > Is there a fix around this issue?
>
> No, I mentioned it offhand to Sami in IRC but I never followed up. This
> failure appears to be introduced by commit f922bd9bf33b ("KVM: Move MMU
> notifier's mmu_lock acquisition into common helper").
>
> Sami, do you want an issue opened around this somewhere?

Yes, please file a bug. The ClangBuiltLinux Github is probably the best place.

Sami