Re: [RFC PATCH v3] bpf: introduce TAINT_UNSAFE_BPF for mutating helpers

[Aaron Tomlin]

On Sun, May 03, 2026 at 09:51:49PM +0200, Alexei Starovoitov wrote:
[ ... ]
> > +       /*
> > +        * Flag the program if it attempts to use mutating helpers.
> > +        * The actual taint is deferred until successful verification.
> > +        */
> > +       if (func_id == BPF_FUNC_probe_write_user ||
> > +           func_id == BPF_FUNC_override_return)
> > +               env->prog->aux->taints_kernel = true;
> 
> Nack.
> 
> Please stop this spam.
> We're not doing it. These helpers have been around for a long time.
> There was no need to taint then. There is no need to taint now.

Hi Alexei,

Fair enough. I will drop the entire series. Please ignore the v4.

Thank you for your time.


Kind regards,
-- 
Aaron Tomlin

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