netdev - Re: [PATCH bpf v2 0/2] bpf: fix recursive lock and add test

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Message-ID: <wmexc72od3rsa5ayrmsuhhbozrr22yxkynspz46swyrcyp77bm@pjfwspeu2b7r>
Date: Sun, 10 Nov 2024 16:36:40 +0800
From: Jiayuan Chen <mrpre@....com>
To: martin.lau@...ux.dev, edumazet@...gle.com, jakub@...udflare.com, 
	davem@...emloft.net, dsahern@...nel.org, netdev@...r.kernel.org, bpf@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH bpf v2 0/2] bpf: fix recursive lock and add test -
 updated to [PATCH bpf v3]

On Sat, Nov 09, 2024 at 11:03:03PM +0800, Jiayuan Chen wrote:
> 1. fix recursive lock when ebpf prog return SK_PASS.
> 2. add selftest to reproduce recursive lock.
> 
> Note that if just the selftest merged without first
> patch, the test case will definitely fail, because the
> issue of deadlock is inevitable.
> 
> ---
> v1->v2: 1.inspired by martin.lau to add selftest to reproduce the issue.
>         2. follow the community rules for patch.
>         v1: https://lore.kernel.org/bpf/55fc6114-7e64-4b65-86d2-92cfd1e9e92f@linux.dev/T/#u
> ---
> 
> Jiayuan Chen (2):
>   bpf: fix recursive lock when verdict program return SK_PASS
>   selftests/bpf: Add some tests with sockmap SK_PASS
> 
>  net/core/skmsg.c                              |  4 +-
>  .../selftests/bpf/prog_tests/sockmap_basic.c  | 53 +++++++++++++++++++
>  .../bpf/progs/test_sockmap_pass_prog.c        |  2 +-
>  3 files changed, 56 insertions(+), 3 deletions(-)
> 
> -- 
> 2.43.5

patch v3: https://lore.kernel.org/bpf/20241110082452.40415-1-mrpre@163.com/T/#t