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Fri, 16 Jan 2026 05:29:49 -0800 (PST) From: Andrey Ryabinin To: Andrew Morton Cc: =?UTF-8?q?Maciej=20=C5=BBenczykowski?= , Maciej Wieczor-Retman , Alexander Potapenko , Andrey Konovalov , Dmitry Vyukov , Vincenzo Frascino , kasan-dev@googlegroups.com, Uladzislau Rezki , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Andrey Ryabinin Subject: [PATCH] mm-kasan-kunit-extend-vmalloc-oob-tests-to-cover-vrealloc-fix Date: Fri, 16 Jan 2026 14:28:22 +0100 Message-ID: <20260116132822.22227-1-ryabinin.a.a@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Adjust vrealloc() size to verify full-granule poisoning/unpoisoning in tag-based modes. Signed-off-by: Andrey Ryabinin Cc: Andrey Konovalov Reviewed-by: Andrey Konovalov Tested-by: Maciej Wieczor-Retman --- mm/kasan/kasan_test_c.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/kasan/kasan_test_c.c b/mm/kasan/kasan_test_c.c index cc8fc479e13a..b4d157962121 100644 --- a/mm/kasan/kasan_test_c.c +++ b/mm/kasan/kasan_test_c.c @@ -1881,7 +1881,7 @@ static void vmalloc_oob(struct kunit *test) =20 vmalloc_oob_helper(test, v_ptr, size); =20 - size--; + size -=3D KASAN_GRANULE_SIZE + 1; v_ptr =3D vrealloc(v_ptr, size, GFP_KERNEL); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, v_ptr); =20 @@ -1889,7 +1889,7 @@ static void vmalloc_oob(struct kunit *test) =20 vmalloc_oob_helper(test, v_ptr, size); =20 - size +=3D 2; + size +=3D 2 * KASAN_GRANULE_SIZE + 2; v_ptr =3D vrealloc(v_ptr, size, GFP_KERNEL); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, v_ptr); =20 --=20 2.52.0