linux-kernel - Re: [PATCH bpf v4 2/2] selftests/bpf: add regression test for bpf_d

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Message-ID: <20251206140640.3013-1-electronlsr@gmail.com>
Date: Sat,  6 Dec 2025 22:06:40 +0800
From: Shuran Liu <electronlsr@...il.com>
To: song@...nel.org
Cc: andrii@...nel.org,
	ast@...nel.org,
	bpf@...r.kernel.org,
	daniel@...earbox.net,
	dxu@...uu.xyz,
	eddyz87@...il.com,
	electronlsr@...il.com,
	haoluo@...gle.com,
	john.fastabend@...il.com,
	jolsa@...nel.org,
	kpsingh@...nel.org,
	linux-kernel@...r.kernel.org,
	linux-kselftest@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,
	martin.lau@...ux.dev,
	mathieu.desnoyers@...icios.com,
	mattbobrowski@...gle.com,
	mhiramat@...nel.org,
	rostedt@...dmis.org,
	sdf@...ichev.me,
	shuah@...nel.org,
	yonghong.song@...ux.dev
Subject: Re: [PATCH bpf v4 2/2] selftests/bpf: add regression test for bpf_d_path()

Hi Song,

I have done further testing and found that the initial version of
selftest (LSM version) could not reliably reproduce the issue on a
buggy kernel. I have now verified that the new fallocate test
correctly reproduces the bug.

I will be sending the v5 patch shortly. (This is our first patch
submission to the kernel, thank you for your patience :D )

Best regards,
Shuran Liu