netdev - [PATCH bpf-next 0/2] Fix release of struct

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Message-Id: <20241108082633.2338543-1-xukuohai@huaweicloud.com>
Date: Fri,  8 Nov 2024 16:26:31 +0800
From: Xu Kuohai <xukuohai@...weicloud.com>
To: bpf@...r.kernel.org,
	netdev@...r.kernel.org
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>,
	Yonghong Song <yonghong.song@...ux.dev>,
	Kui-Feng Lee <thinker.li@...il.com>
Subject: [PATCH bpf-next 0/2] Fix release of struct_ops map

From: Xu Kuohai <xukuohai@...wei.com>

This series fix a bug I found when doing rcu waiting cleanup for struct_ops
map. When there is sleepable prog in struct_ops map, the map risks being
released while the prog is still running.

Xu Kuohai (2):
  bpf: Fix release of struct_ops map
  selftests/bpf: Add test for struct_ops map release

 kernel/bpf/bpf_struct_ops.c                   |  37 +++--
 kernel/bpf/syscall.c                          |   7 +-
 .../selftests/bpf/bpf_testmod/bpf_testmod.c   |  78 ++++++---
 .../bpf/bpf_testmod/bpf_testmod_kfunc.h       |   2 +-
 .../bpf/prog_tests/test_struct_ops_module.c   | 154 ++++++++++++++++++
 .../bpf/progs/struct_ops_map_release.c        |  30 ++++
 6 files changed, 267 insertions(+), 41 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_map_release.c

-- 
2.39.5