Muchun Song 1c86a188e0 mm: kfence: fix using kfence_metadata without initialization in show_object() ... The variable kfence_metadata is initialized in kfence_init_pool(), then, it is not initialized if kfence is disabled after booting. In this case, kfence_metadata will be used (e.g. ->lock and ->state fields) without initialization when reading /sys/kernel/debug/kfence/objects. There will be a warning if you enable CONFIG_DEBUG_SPINLOCK. Fix it by creating debugfs files when necessary. Link: https://lkml.kernel.org/r/20230315034441.44321-1-songmuchun@bytedance.com Fixes: 0ce20dd840 ("mm: add Kernel Electric-Fence infrastructure") Signed-off-by: Muchun Song <songmuchun@bytedance.com> Tested-by: Marco Elver <elver@google.com> Reviewed-by: Marco Elver <elver@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Jann Horn <jannh@google.com> Cc: SeongJae Park <sjpark@amazon.de> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2023-03-23 17:18:35 -07:00
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.kunitconfig	kfence: test: use new suite_{init/exit} support, add .kunitconfig	2022-05-02 12:35:57 -06:00
core.c	mm: kfence: fix using kfence_metadata without initialization in show_object()	2023-03-23 17:18:35 -07:00
kfence_test.c	treewide: use get_random_u32_inclusive() when possible	2022-11-18 02:18:02 +01:00
kfence.h	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00
Makefile	mm/kfence: remove unnecessary CONFIG_KFENCE option	2022-03-22 15:57:11 -07:00
report.c	hardening updates for v6.2-rc1	2022-12-14 12:20:00 -08:00