[ Sorry for delay, just noticed this one doesn't have a reply yet. ]
On Sat, 3 Oct 2020 at 00:27, Jann Horn wrote:
> On Fri, Oct 2, 2020 at 11:28 PM Marco Elver wrote:
> > On Fri, 2 Oct 2020 at 21:32, Jann Horn wrote:
> > > > That's another check; we don't want to make this more expensive.
> >
On Fri, 2 Oct 2020 at 20:28, Jann Horn wrote:
[...]
> > >
> > > Do you have performance numbers or a description of why you believe
> > > that this part of kfence is exceptionally performance-sensitive? If
> > > not, it might be a good idea to remove this optimization, at least for
> > > the initi
On Fri, Oct 2, 2020 at 11:28 PM Marco Elver wrote:
> On Fri, 2 Oct 2020 at 21:32, Jann Horn wrote:
> > > That's another check; we don't want to make this more expensive.
> >
> > Ah, right, I missed that this is the one piece of KFENCE that is
> > actually really hot code until Dmitry pointed that
On Fri, 2 Oct 2020 at 21:32, Jann Horn wrote:
> > That's another check; we don't want to make this more expensive.
>
> Ah, right, I missed that this is the one piece of KFENCE that is
> actually really hot code until Dmitry pointed that out.
>
> But actually, can't you reduce how hot this is for
On Fri, Oct 02, 2020 at 09:31PM +0200, Jann Horn wrote:
[...]
> > >
> > > If !CONFIG_HAVE_ARCH_KFENCE_STATIC_POOL, this should probably always
> > > return false if __kfence_pool is NULL, right?
> >
> > That's another check; we don't want to make this more expensive.
>
> Ah, right, I missed that t
On Fri, Oct 2, 2020 at 7:20 PM Marco Elver wrote:
> On Fri, Oct 02, 2020 at 08:33AM +0200, Jann Horn wrote:
> > On Tue, Sep 29, 2020 at 3:38 PM Marco Elver wrote:
> > > This adds the Kernel Electric-Fence (KFENCE) infrastructure. KFENCE is a
> > > low-overhead sampling-based memory safety error d
On Fri, Oct 2, 2020 at 4:23 PM Dmitry Vyukov wrote:
> On Fri, Oct 2, 2020 at 9:54 AM Jann Horn wrote:
> > On Fri, Oct 2, 2020 at 8:33 AM Jann Horn wrote:
> > > On Tue, Sep 29, 2020 at 3:38 PM Marco Elver wrote:
> > > > This adds the Kernel Electric-Fence (KFENCE) infrastructure. KFENCE is a
> >
Hi Jann,
Thanks for your comments!!
On Fri, Oct 02, 2020 at 08:33AM +0200, Jann Horn wrote:
> On Tue, Sep 29, 2020 at 3:38 PM Marco Elver wrote:
> > This adds the Kernel Electric-Fence (KFENCE) infrastructure. KFENCE is a
> > low-overhead sampling-based memory safety error detector of heap
> > u
On Fri, Oct 02, 2020 at 04:22:59PM +0200, Dmitry Vyukov wrote:
> On Fri, Oct 2, 2020 at 9:54 AM Jann Horn wrote:
> >
> > On Fri, Oct 2, 2020 at 8:33 AM Jann Horn wrote:
> > > On Tue, Sep 29, 2020 at 3:38 PM Marco Elver wrote:
> > > > This adds the Kernel Electric-Fence (KFENCE) infrastructure. K
On Fri, Oct 2, 2020 at 9:54 AM Jann Horn wrote:
>
> On Fri, Oct 2, 2020 at 8:33 AM Jann Horn wrote:
> > On Tue, Sep 29, 2020 at 3:38 PM Marco Elver wrote:
> > > This adds the Kernel Electric-Fence (KFENCE) infrastructure. KFENCE is a
> > > low-overhead sampling-based memory safety error detector
On Fri, Oct 2, 2020 at 8:33 AM Jann Horn wrote:
> On Tue, Sep 29, 2020 at 3:38 PM Marco Elver wrote:
> > This adds the Kernel Electric-Fence (KFENCE) infrastructure. KFENCE is a
> > low-overhead sampling-based memory safety error detector of heap
> > use-after-free, invalid-free, and out-of-bound
On Tue, Sep 29, 2020 at 3:38 PM Marco Elver wrote:
> This adds the Kernel Electric-Fence (KFENCE) infrastructure. KFENCE is a
> low-overhead sampling-based memory safety error detector of heap
> use-after-free, invalid-free, and out-of-bounds access errors.
>
> KFENCE is designed to be enabled in
From: Alexander Potapenko
This adds the Kernel Electric-Fence (KFENCE) infrastructure. KFENCE is a
low-overhead sampling-based memory safety error detector of heap
use-after-free, invalid-free, and out-of-bounds access errors.
KFENCE is designed to be enabled in production kernels, and has near
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