The patch titled
Subject: kasan: test: add test case for double-kmem_cache_destroy()
has been added to the -mm tree. Its filename is
kasan-test-add-test-case-for-double-kmem_cache_destroy.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/kasan-test-add-test-case-for-double-kmem_cache_destroy.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/kasan-test-add-test-case-for-double-kmem_cache_destroy.patch
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------------------------------------------------------
From: Marco Elver <elver@xxxxxxxxxx>
Subject: kasan: test: add test case for double-kmem_cache_destroy()
Add a test case for double-kmem_cache_destroy() detection.
Link: https://lkml.kernel.org/r/20211119142219.1519617-2-elver@xxxxxxxxxx
Signed-off-by: Marco Elver <elver@xxxxxxxxxx>
Reviewed-by: Andrey Konovalov <andreyknvl@xxxxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/test_kasan.c | 11 +++++++++++
1 file changed, 11 insertions(+)
--- a/lib/test_kasan.c~kasan-test-add-test-case-for-double-kmem_cache_destroy
+++ a/lib/test_kasan.c
@@ -866,6 +866,16 @@ static void kmem_cache_invalid_free(stru
kmem_cache_destroy(cache);
}
+static void kmem_cache_double_destroy(struct kunit *test)
+{
+ struct kmem_cache *cache;
+
+ cache = kmem_cache_create("test_cache", 200, 0, 0, NULL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cache);
+ kmem_cache_destroy(cache);
+ KUNIT_EXPECT_KASAN_FAIL(test, kmem_cache_destroy(cache));
+}
+
static void kasan_memchr(struct kunit *test)
{
char *ptr;
@@ -1185,6 +1195,7 @@ static struct kunit_case kasan_kunit_tes
KUNIT_CASE(ksize_uaf),
KUNIT_CASE(kmem_cache_double_free),
KUNIT_CASE(kmem_cache_invalid_free),
+ KUNIT_CASE(kmem_cache_double_destroy),
KUNIT_CASE(kasan_memchr),
KUNIT_CASE(kasan_memcmp),
KUNIT_CASE(kasan_strings),
_
Patches currently in -mm which might be from elver@xxxxxxxxxx are
mm-slab_common-use-warn-if-cache-still-has-objects-on-destroy.patch
kasan-test-add-globals-left-out-of-bounds-test.patch
kasan-add-ability-to-detect-double-kmem_cache_destroy.patch
kasan-test-add-test-case-for-double-kmem_cache_destroy.patch
panic-use-error_report_end-tracepoint-on-warnings.patch
