Re: [PATCH 3/3] x86/ftrace: Use text_poke()

From: Steven Rostedt
Date: Mon Oct 21 2019 - 23:16:43 EST


On Mon, 21 Oct 2019 20:10:09 -0700
Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx> wrote:

> On Mon, Oct 21, 2019 at 5:43 PM Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
> >
> > On Mon, 21 Oct 2019 17:36:54 -0700
> > Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx> wrote:
> >
> >
> > > What is the status of this set ?
> > > Steven, did you apply it ?
> >
> > There's still bugs to figure out.
>
> what bugs you're seeing?
> The IPI frequency that was mentioned in this thread or something else?
> I'm hacking ftrace+bpf stuff in the same spot and would like to
> base my work on the latest and greatest.

There's real bugs (crashes), talked about in later versions of the
patch set:

https://lore.kernel.org/r/20191009224135.2dcf7767@xxxxxxxxxxxxxxxx

And there was another crash on Peter's latest I just reported:

https://lore.kernel.org/r/20191021222110.49044eb5@xxxxxxxxxxxxxxxx

-- Steve