On Mon, 21 Nov 2022 11:09:21 +0100 Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > On Fri, Nov 18, 2022 at 01:06:08PM -0500, Steven Rostedt wrote: > > How do I know that a function return was modified by BPF? If I'm debugging > > something, is it obvious to the developer that is debugging an issue > > (perhaps unaware of what BPF programs are loaded on the users machine), > > that the return of a function was tweaked by BPF and that could be the > > source of the bug? > > Have it taint the kernel if something is overridden ;-) Then we can all > ignore the report until it comes back without taint. Hmm, indeed. BTW, error injection should set that too. Thanks, -- Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
