[External] : Re: [PATCH] net/tap: Modified TAP BPF program as per the Kernel-version upgrade requirements.
Stephen Hemminger
stephen at networkplumber.org
Wed Jan 17 04:25:58 CET 2024
On Tue, 16 Jan 2024 05:43:00 +0000
Madhuker Mythri <madhuker.mythri at oracle.com> wrote:
> Hi Stephen,
>
> Yes, I found that the Kernel we use has more Verification added for safe execution:
> https://blogs.oracle.com/linux/post/bpf-in-depth-the-bpf-bytecode-and-the-bpf-verifier
>
> Here they mentioned about SKB pointer direct access, math on pointer and array with undefined access is denied on BPF code.
Have you tried running Cilium? I would expect those custom changes would break that
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