The quilt patch titled
Subject: kasan: document kasan_mempool_poison_object
has been removed from the -mm tree. Its filename was
kasan-document-kasan_mempool_poison_object.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Subject: kasan: document kasan_mempool_poison_object
Date: Tue, 19 Dec 2023 23:28:47 +0100
Add documentation comment for kasan_mempool_poison_object.
Link: https://lkml.kernel.org/r/af33ba8cabfa1ad731fe23a3f874bfc8d3b7fed4.1703024586.git.andreyknvl@xxxxxxxxxx
Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Cc: Alexander Lobakin <alobakin@xxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Cc: Breno Leitao <leitao@xxxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Evgenii Stepanov <eugenis@xxxxxxxxxx>
Cc: Marco Elver <elver@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/kasan.h | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
--- a/include/linux/kasan.h~kasan-document-kasan_mempool_poison_object
+++ a/include/linux/kasan.h
@@ -213,6 +213,24 @@ static __always_inline void * __must_che
}
void __kasan_mempool_poison_object(void *ptr, unsigned long ip);
+/**
+ * kasan_mempool_poison_object - Check and poison a mempool slab allocation.
+ * @ptr: Pointer to the slab allocation.
+ *
+ * This function is intended for kernel subsystems that cache slab allocations
+ * to reuse them instead of freeing them back to the slab allocator (e.g.
+ * mempool).
+ *
+ * This function poisons a slab allocation without initializing its memory and
+ * without putting it into the quarantine (for the Generic mode).
+ *
+ * This function also performs checks to detect double-free and invalid-free
+ * bugs and reports them.
+ *
+ * This function operates on all slab allocations including large kmalloc
+ * allocations (the ones returned by kmalloc_large() or by kmalloc() with the
+ * size > KMALLOC_MAX_SIZE).
+ */
static __always_inline void kasan_mempool_poison_object(void *ptr)
{
if (kasan_enabled())
_
Patches currently in -mm which might be from andreyknvl@xxxxxxxxxx are
kasan-stop-leaking-stack-trace-handles.patch
