linux-kernel - Re: [PATCH bpf-next 2/2] selftests/bpf: Add test for connect() racing sockmap update and signal

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Message-ID: <CAADnVQL8wV1iPeMZ-ZvN-34o0gJF1xGYu5ZtLuD7GBgtj-ZNuQ@mail.gmail.com>
Date: Tue, 27 Jan 2026 10:58:51 -0800
From: Alexei Starovoitov <alexei.starovoitov@...il.com>
To: Michal Luczaj <mhal@...x.co>
Cc: Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, 
	Andrii Nakryiko <andrii@...nel.org>, Martin KaFai Lau <martin.lau@...ux.dev>, 
	Eduard Zingerman <eddyz87@...il.com>, Song Liu <song@...nel.org>, 
	Yonghong Song <yonghong.song@...ux.dev>, John Fastabend <john.fastabend@...il.com>, 
	KP Singh <kpsingh@...nel.org>, Stanislav Fomichev <sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>, 
	Jiri Olsa <jolsa@...nel.org>, Shuah Khan <shuah@...nel.org>, 
	Kuniyuki Iwashima <kuniyu@...gle.com>, bpf <bpf@...r.kernel.org>, 
	"open list:KERNEL SELFTEST FRAMEWORK" <linux-kselftest@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH bpf-next 2/2] selftests/bpf: Add test for connect() racing
 sockmap update and signal

On Fri, Jan 23, 2026 at 8:16 AM Michal Luczaj <mhal@...x.co> wrote:
>
> Attempt to trigger warnings/crashes by racing connect() against sockmap
> updates and signals.
>
> Follow-up to the discussion regarding af_vsock connect():
> https://lore.kernel.org/netdev/20250311155601.eui5j2lta3q46i6u@gmail.com/
>
> Suggested-by: John Fastabend <john.fastabend@...il.com>
> Signed-off-by: Michal Luczaj <mhal@...x.co>
> ---
>  .../bpf/prog_tests/sockmap_interrupted_connect.c   | 200 +++++++++++++++++++++
>  1 file changed, 200 insertions(+)

Not sure why, but it seems to be causing reliable failures
in what should have been an unrelated test. See bpf CI.
I suspect there is a cleanup issue with this new test.
Pls investigate.

pw-bot: cr