Re: [PATCH v3 1/2] bpf: Reject variable offset alu on PTR_TO_FLOW_KEYS

From: Hao Sun
Date: Fri Jan 12 2024 - 13:02:33 EST


On Fri, Jan 12, 2024 at 6:57 PM Alexei Starovoitov
<alexei.starovoitov@xxxxxxxxx> wrote:
>
> On Fri, Jan 12, 2024 at 7:20 AM Hao Sun <sunhao.th@xxxxxxxxx> wrote:
> >
> > For PTR_TO_FLOW_KEYS, check_flow_keys_access() only uses fixed off
> > for validation. However, variable offset ptr alu is not prohibited
> > for this ptr kind. So the variable offset is not checked.
>
> Why resend v3?
> What changed from v2?

Nothing changes in the first patch, the tests in the second patch are
reformatted
with a proper number of tabs after each instruction. Forgot to add changelogs.