netdev - Re: [PATCH bpf-next v2 0/4] Fixes for BPF selftests on Loongarch

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Date: Tue, 25 Jun 2024 16:29:30 +0800
From: Huacai Chen <chenhuacai@...nel.org>
To: Geliang Tang <geliang@...nel.org>
Cc: John Fastabend <john.fastabend@...il.com>, Jakub Sitnicki <jakub@...udflare.com>, 
	"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, David Ahern <dsahern@...nel.org>, 
	Andrii Nakryiko <andrii@...nel.org>, Eduard Zingerman <eddyz87@...il.com>, Mykola Lysenko <mykolal@...com>, 
	Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, 
	Martin KaFai Lau <martin.lau@...ux.dev>, Song Liu <song@...nel.org>, 
	Yonghong Song <yonghong.song@...ux.dev>, KP Singh <kpsingh@...nel.org>, 
	Stanislav Fomichev <sdf@...gle.com>, Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>, 
	Shuah Khan <shuah@...nel.org>, Mykyta Yatsenko <yatsenko@...a.com>, Miao Xu <miaxu@...a.com>, 
	Yuran Pereira <yuran.pereira@...mail.com>, Tiezhu Yang <yangtiezhu@...ngson.cn>, 
	Geliang Tang <tanggeliang@...inos.cn>, netdev@...r.kernel.org, bpf@...r.kernel.org, 
	linux-kselftest@...r.kernel.org
Subject: Re: [PATCH bpf-next v2 0/4] Fixes for BPF selftests on Loongarch

On Tue, Jun 25, 2024 at 4:25 PM Geliang Tang <geliang@...nel.org> wrote:
>
> From: Geliang Tang <tanggeliang@...inos.cn>
>
> v2:
>  - add patch 2, a new fix for sk_msg_memcopy_from_iter.
>  - update patch 3, only test "sk->sk_prot->close" as Eric suggested.
>  - update patch 4, use "goto err" instead of "return" as Eduard
>    suggested.
>  - add "fixes" tag for patch 1-3.
>  - change subject prefixes as "bpf-next" to trigger BPF CI.
>  - cc Loongarch maintainers too.
>
> BPF selftests seem to have not been fully tested on Loongarch. When I
> ran these tests on Loongarch recently, some errors occur. This patch set
> contains some null-check related fixes for these errors.
Is the root cause that LoongArch lacks bpf trampoline?

Huacai

>
> Geliang Tang (4):
>   skmsg: null check for sg_page in sk_msg_recvmsg
>   skmsg: null check for sg_page in sk_msg_memcopy_from_iter
>   inet: null check for close in inet_release
>   selftests/bpf: Null checks for link in bpf_tcp_ca
>
>  net/core/skmsg.c                                 |  4 ++++
>  net/ipv4/af_inet.c                               |  3 ++-
>  .../selftests/bpf/prog_tests/bpf_tcp_ca.c        | 16 ++++++++++++----
>  3 files changed, 18 insertions(+), 5 deletions(-)
>
> --
> 2.43.0
>