linux-kernel - [PATCH bpf 0/2] bpf: Avoid RCU context warning when unpinning htab with internal structs

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Message-ID: <20251003084528.502518-1-kafai.wan@linux.dev>
Date: Fri,  3 Oct 2025 16:45:26 +0800
From: KaFai Wan <kafai.wan@...ux.dev>
To: ast@...nel.org,
	daniel@...earbox.net,
	andrii@...nel.org,
	martin.lau@...ux.dev,
	eddyz87@...il.com,
	song@...nel.org,
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	john.fastabend@...il.com,
	kpsingh@...nel.org,
	sdf@...ichev.me,
	haoluo@...gle.com,
	jolsa@...nel.org,
	shuah@...nel.org,
	kafai.wan@...ux.dev,
	toke@...hat.com,
	linux-kernel@...r.kernel.org,
	bpf@...r.kernel.org,
	linux-kselftest@...r.kernel.org
Subject: [PATCH bpf 0/2] bpf: Avoid RCU context warning when unpinning htab with internal structs

This small patchset is about avoid RCU context warning when unpinning
htab with internal structs (timer, workqueue, or task_work).

---
KaFai Wan (2):
  bpf: Avoid RCU context warning when unpinning htab with internal
    structs
  selftests/bpf: Add test for unpinning htab with internal timer struct

 kernel/bpf/inode.c                            |  2 +-
 .../selftests/bpf/prog_tests/pinning_htab.c   | 37 +++++++++++++++++++
 .../selftests/bpf/progs/test_pinning_htab.c   | 25 +++++++++++++
 3 files changed, 63 insertions(+), 1 deletion(-)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/pinning_htab.c
 create mode 100644 tools/testing/selftests/bpf/progs/test_pinning_htab.c

-- 
2.43.0