[PATCH v4 0/2] livepatch: Fix issues around CONFIG_DEBUG_KOBJECT_RELEASE

These fixes were found while implementing the replace set series [0].
They are independent of that series and can be applied separately.

Link: https://lore.kernel.org/live-patching/20260809091954.22930-1-laoar.shao@gmail.com (local) [0]

Changes:
v3->v4:
- use "dmesg -r" instead of "dmesg --raw" (Joe)

v3: https://lore.kernel.org/live-patching/20260821031648.48195-1-laoar.shao@gmail.com/ (local)

v2->v3:
- rename the subject
- include the selftests patch
- exclude the klp-build patch
- use kobj->kref instead of introducing extra counter (Petr)

v2:
https://lore.kernel.org/live-patching/20260816090442.18128-1-laoar.shao@gmail.com/ (local)
https://lore.kernel.org/live-patching/20260818054629.69246-1-laoar.shao@gmail.com/ (local)

v1->v2:
- minor improvements and acked-by (Song)
- fix issues reported by sashiko

v1: https://lore.kernel.org/live-patching/20260813030408.9761-1-laoar.shao@gmail.com/ (local)

Yafang Shao (2):
  livepatch: Fix UAF of unregistered patch kobjects
  selftests/livepatch: filter debug messages in check_result()

 include/linux/livepatch.h                      |  4 ++++
 kernel/livepatch/core.c                        | 10 ++++++++++
 tools/testing/selftests/livepatch/functions.sh | 12 +++++++++---
 3 files changed, 23 insertions(+), 3 deletions(-)

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2.52.0