linux-kernel - [bpf-next v2 0/2] bpf/helpers: Fix bpf

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <tencent_A23159E297D62A89AF24A3EA881106A44208@qq.com>
Date: Thu, 28 Aug 2025 10:52:01 +0800
From: Rong Tao <rtoax@...mail.com>
To: andrii.nakryiko@...il.com,
	ast@...nel.org,
	daniel@...earbox.net
Cc: rtoax@...mail.com,
	Rong Tao <rongtao@...tc.cn>,
	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>,
	Mykola Lysenko <mykolal@...com>,
	Shuah Khan <shuah@...nel.org>,
	Viktor Malik <vmalik@...hat.com>,
	bpf@...r.kernel.org (open list:BPF [GENERAL] (Safe Dynamic Programs and Tools)),
	linux-kernel@...r.kernel.org (open list),
	linux-kselftest@...r.kernel.org (open list:KERNEL SELFTEST FRAMEWORK)
Subject: [bpf-next v2 0/2] bpf/helpers: Fix bpf_strnstr len error

From: Rong Tao <rongtao@...tc.cn>

Fix bpf_strnstr() wrong 'len' parameter, bpf_strnstr("open", "open", 4)
should return 0 instead of -ENOENT.

Rong Tao (2):
  bpf/helpers: bpf_strnstr: Exact match length
  selftests/bpf: Add tests for bpf_strnstr

 kernel/bpf/helpers.c                                      | 4 +++-
 tools/testing/selftests/bpf/progs/string_kfuncs_success.c | 2 ++
 2 files changed, 5 insertions(+), 1 deletion(-)

---
v2: Follow Andrii Nakryiko's advise, fix the 'wrong fix';
v1: https://lore.kernel.org/lkml/tencent_65E5988AD52BEC280D22964189505CD6ED06@qq.com/
-- 
2.51.0