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

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Message-ID: <20241109150305.141759-1-mrpre@163.com>
Date: Sat,  9 Nov 2024 23:03:03 +0800
From: Jiayuan Chen <mrpre@....com>
To: martin.lau@...ux.dev,
	edumazet@...gle.com,
	jakub@...udflare.com,
	davem@...emloft.net,
	dsahern@...nel.org,
	kuba@...nel.org,
	pabeni@...hat.com,
	netdev@...r.kernel.org,
	bpf@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	horms@...nel.org,
	daniel@...earbox.net
Cc: Jiayuan Chen <mrpre@....com>
Subject: [PATCH bpf v2 0/2] bpf: fix recursive lock and add test

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