Re: [PATCH] mm: kill kmemcheck

Dave Jones
2015-03-11T14:23:21Z

On Wed, Mar 11, 2015 at 09:39:33AM -0400, Sasha Levin wrote:
> On 03/11/2015 08:40 AM, Steven Rostedt wrote:
> > On Wed, 11 Mar 2015 08:34:46 -0400
> > Sasha Levin <sasha.levin@oracle.com> wrote:
> >
> >> > Fair enough. We knew there are existing kmemcheck users, but KASan should be
> >> > superior both in performance and the scope of bugs it finds. It also shouldn't
> >> > impose new limitations beyond requiring gcc 4.9.2+.
> >> >
> > Ouch! OK, then I can't use it. I'm currently compiling with gcc 4.6.3.
> >
> > It will be a while before I upgrade my build farm to something newer.
>
> Are you actually compiling new kernels with 4.6.3, or are you using older
> kernels as well?
>
> There's no real hurry to kill kmemcheck right now, but we do want to stop
> supporting that in favour of KASan.

Another question is "is kmemcheck actually finding anything right now?"
I've personally not hit anything with it in quite a while.

Dave