Re: [PATCH] libbpf: Fix integer overflow issue

[Eduard Zingerman]

On Mon, 2024-10-07 at 20:42 -0700, Andrii Nakryiko wrote:

[...]

> Not sure what Eduard is suggesting here, tbh. But I think if this
> actually can happen that we have a non-loaded BPF program in one of
> those struct_ops slots, then let's add a test demonstrating that.

Given the call chain listed in a previous email I think that such
situation is not possible (modulo obj->gen_loader, which I know
nothing about).

Thus I suggest to add a pr_warn() and return -EINVAL or something like
that here.

> Worst case of what can happen right now is the kernel rejecting
> struct_ops loading due to -22 as a program FD.
> 
> pw-bot: cr

[...]