On Tue, Mar 14, 2023 at 4:58 AM Alexander Lobakin
<aleksander.lobakin@xxxxxxxxx> wrote:
>
> All error logs:
> libbpf: prog 'trace_virtqueue_add_sgs': BPF program load failed: Bad
> address
> libbpf: prog 'trace_virtqueue_add_sgs': -- BEGIN PROG LOAD LOG --
> The sequence of 8193 jumps is too complex.
> verification time 77808 usec
> stack depth 64
> processed 156616 insns (limit 1000000) max_states_per_insn 8
> total_states 1754 peak_states 1712 mark_read 12
> -- END PROG LOAD LOG --
> libbpf: prog 'trace_virtqueue_add_sgs': failed to load: -14
> libbpf: failed to load object 'loop6.bpf.o'
> scale_test:FAIL:expect_success unexpected error: -14 (errno 14)
> #257 verif_scale_loop6:FAIL
> Summary: 288/1766 PASSED, 21 SKIPPED, 1 FAILED
>
> So, xdp_do_redirect, which was previously failing, now works fine. OTOH,
> "verif_scale_loop6" now fails, but from what I understand from the log,
> it has nothing with the series ("8193 jumps is too complex" -- I don't
> even touch program-related stuff). I don't know what's the reason of it
> failing, can it be some CI issues or maybe some recent commits?
Yeah. It's an issue with the latest clang.
We don't have a workaround for this yet.
It's not a blocker for your patchset.
We didn't have time to look at it closely.
