Re: [PATCH bpf v2 2/2] selftests/bpf: Exercise negative optlen in cgroup getsockopt hook

Junseo Lim <[email protected]>
Newsgroups org.kernel.vger.bpf,org.kernel.vger.linux-kernel
Message-ID <aoKQ04mN7zzWAqkI@hp-zirajs> 
On Tue, Aug 11, 2026 at 03:10:47PM +0000, [email protected] wrote:
> Is the intent that this test relies on WARN/taint detection or
> panic_on_warn, or is the value of the test primarily as a WARN-only
> reproducer rather than a pass/fail assertion?

Yes, the intent is for this to serve as a reproducer for the WARN rather
than a pass/fail regression test. A clear pass/fail verdict would be
preferable, but that does not seem feasible here since EFAULT is
returned regardless of the patch.

Another option would be to add a KUnit test for the negative optlen
validation, but that seemed excessive for this fix.
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