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-rw-r--r--lib/test_kasan.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/lib/test_kasan.c b/lib/test_kasan.c
index 9a227d7e06d6..e59f185b8075 100644
--- a/lib/test_kasan.c
+++ b/lib/test_kasan.c
@@ -749,13 +749,13 @@ static void kasan_bitops_tags(struct kunit *test)
/* This test is specifically crafted for tag-based modes. */
KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_GENERIC);
- /* Allocation size will be rounded to up granule size, which is 16. */
- bits = kzalloc(sizeof(*bits), GFP_KERNEL);
+ /* kmalloc-64 cache will be used and the last 16 bytes will be the redzone. */
+ bits = kzalloc(48, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, bits);
- /* Do the accesses past the 16 allocated bytes. */
- kasan_bitops_modify(test, BITS_PER_LONG, &bits[1]);
- kasan_bitops_test_and_modify(test, BITS_PER_LONG + BITS_PER_BYTE, &bits[1]);
+ /* Do the accesses past the 48 allocated bytes, but within the redone. */
+ kasan_bitops_modify(test, BITS_PER_LONG, (void *)bits + 48);
+ kasan_bitops_test_and_modify(test, BITS_PER_LONG + BITS_PER_BYTE, (void *)bits + 48);
kfree(bits);
}