linux-kernel - [PATCH HID 0/4] HID: selftest fixes after merge into 6.11-rc0 tree

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Message-Id: <20240723-fix-6-11-bpf-v1-0-b9d770346784@kernel.org>
Date: Tue, 23 Jul 2024 18:21:50 +0200
From: Benjamin Tissoires <bentiss@...nel.org>
To: Jiri Kosina <jikos@...nel.org>, Shuah Khan <shuah@...nel.org>
Cc: linux-input@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 linux-kernel@...r.kernel.org, bpf@...r.kernel.org, 
 Benjamin Tissoires <bentiss@...nel.org>
Subject: [PATCH HID 0/4] HID: selftest fixes after merge into 6.11-rc0 tree

After HID-BPF struct_ops was merged into 6.11-rc0, there are a few
mishaps:
- the bpf_wq API changed and needs to be updated here
- libbpf now auto-attach all the struct_ops it sees in the bpf object,
  leading to attempting at attaching them multiple times

Fix the selftests but also prevent the same struct_ops to be attached
more than once as this enters various locks, confusions, and kernel
oopses.

Signed-off-by: Benjamin Tissoires <bentiss@...nel.org>
---
Benjamin Tissoires (4):
      selftests/hid: fix bpf_wq new API
      selftests/hid: disable struct_ops auto-attach
      HID: bpf: prevent the same struct_ops to be attached more than once
      selftests/hid: add test for attaching multiple time the same struct_ops

 drivers/hid/bpf/hid_bpf_struct_ops.c               |  5 +++++
 tools/testing/selftests/hid/hid_bpf.c              | 26 ++++++++++++++++++++++
 tools/testing/selftests/hid/progs/hid.c            |  2 +-
 .../testing/selftests/hid/progs/hid_bpf_helpers.h  |  2 +-
 4 files changed, 33 insertions(+), 2 deletions(-)
---
base-commit: 6e504d2c61244a01226c5100c835e44fb9b85ca8
change-id: 20240723-fix-6-11-bpf-cfa63dcda5bc

Best regards,
-- 
Benjamin Tissoires <bentiss@...nel.org>