Messages in this thread | | | Date | Mon, 20 Apr 2020 15:23:06 -0400 | From | Steven Rostedt <> | Subject | Re: [PATCH v11 04/12] scs: disable when function graph tracing is enabled |
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On Fri, 17 Apr 2020 16:46:14 +0100 Mark Rutland <mark.rutland@arm.com> wrote:
> > > > And doesn't BPF also do stuff like this? > > > > > > Can BPF mess with return addresses now!? > > > > At least on x86 I think it does. But what do I know, I can't operate > > that stuff. Rostedt might know. > > Sounds like I might need to do some digging...
May want to ping Alexei. It appears that if BPF adds a direct hook to a function, it will prevent the function graph tracer from tracing it. :-/
-- Steve
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