linux-kernel - Re: [PATCH bpf-next v3 4/4] bpf/selftests: Verify struct

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Date:   Wed, 25 Jan 2023 08:06:11 -0800
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     David Vernet <void@...ifault.com>
Cc:     bpf <bpf@...r.kernel.org>, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        Song Liu <song@...nel.org>, Yonghong Song <yhs@...a.com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>,
        Stanislav Fomichev <sdf@...gle.com>,
        Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Kernel Team <kernel-team@...a.com>, Tejun Heo <tj@...nel.org>
Subject: Re: [PATCH bpf-next v3 4/4] bpf/selftests: Verify struct_ops prog
 sleepable behavior

On Tue, Jan 24, 2023 at 9:04 PM David Vernet <void@...ifault.com> wrote:
>
> In a set of prior changes, we added the ability for struct_ops programs
> to be sleepable. This patch enhances the dummy_st_ops selftest suite to
> validate this behavior by adding a new sleepable struct_ops entry to
> dummy_st_ops.
>
> Signed-off-by: David Vernet <void@...ifault.com>
> ---
>  include/linux/bpf.h                           |  1 +
>  net/bpf/bpf_dummy_struct_ops.c                | 18 +++++++
>  .../selftests/bpf/prog_tests/dummy_st_ops.c   | 54 ++++++++++++++-----
>  .../selftests/bpf/progs/dummy_st_ops_fail.c   | 27 ++++++++++
>  ...{dummy_st_ops.c => dummy_st_ops_success.c} | 19 +++----
>  5 files changed, 94 insertions(+), 25 deletions(-)
>  create mode 100644 tools/testing/selftests/bpf/progs/dummy_st_ops_fail.c
>  rename tools/testing/selftests/bpf/progs/{dummy_st_ops.c => dummy_st_ops_success.c} (72%)

It fails on s390:
dummy_st_ops_success/dummy_multiple_args:FAIL

Please add to DENYLIST as part of this patch.