Re: [RFC 0/1] BPF tracing for arm64 using fprobe

[Peter Zijlstra]

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.