From nobody Sun Oct 5 17:56:35 2025 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id DD34428D8E1 for ; Thu, 31 Jul 2025 09:02:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753952572; cv=none; b=SppcAOpCW4vpOREc7ZHPuzAPjbjMlKnPcpOcRUmNE0XWKFccGc7Dd7PK8iB2rnA6/jBjMrpyFKLhgsMhLuTv8+QCIlsRM/jx9kj/L8iX1iT9248S4EJcOP2QuZ0u4R4SU/0LmD8oHFjf90CaEXScv8VjRrMADhr1+F14q6yPOgY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753952572; c=relaxed/simple; bh=F+y61gsUMAmZYcwZ60ImnU6Lx7hjWXMO7ut87ZX0g5k=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=hjNf+9JdyHs7hmtJNixnGOlhEFARFhbpTt+LioiY8qW7Giiw1Cya9KbnnPNKMCL+eo08UPIGIDRQl7ZKtfVHbdc8Rbgsz4PN7PHOYgBljGP1gPAk1avmnsyzTPxwZDm0qQlh+1MKvNlFuNCI4zFuprJLPA45bSlELhW8b3JkHxM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 4607A1D13; Thu, 31 Jul 2025 02:02:42 -0700 (PDT) Received: from e129823.cambridge.arm.com (e129823.arm.com [10.1.197.6]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id A62AB3F66E; Thu, 31 Jul 2025 02:02:48 -0700 (PDT) From: Yeoreum Yun To: ryabinin.a.a@gmail.com, glider@google.com, andreyknvl@gmail.com, dvyukov@google.com, vincenzo.frascino@arm.com, akpm@linux-foundation.org Cc: kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Yeoreum Yun Subject: [PATCH] kasan: disable kasan_strings() kunit test when CONFIG_FORTIFY_SOURCE enabled Date: Thu, 31 Jul 2025 10:02:46 +0100 Message-Id: <20250731090246.887442-1-yeoreum.yun@arm.com> X-Mailer: git-send-email 2.34.1 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" When CONFIG_FORTIFY_SOURCE is enabled, invalid access from source triggers __fortify_panic() which kills running task. This makes failured of kasan_strings() kunit testcase since the kunit-try-cacth kthread running kasan_string() dies before checking the fault. To address this, skip kasan_strings() kunit test when CONFIG_FORTIFY_SOURCE is enabled. Signed-off-by: Yeoreum Yun --- mm/kasan/kasan_test_c.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/mm/kasan/kasan_test_c.c b/mm/kasan/kasan_test_c.c index 5f922dd38ffa..1577d3edabb4 100644 --- a/mm/kasan/kasan_test_c.c +++ b/mm/kasan/kasan_test_c.c @@ -1576,6 +1576,12 @@ static void kasan_strings(struct kunit *test) */ KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_AMD_MEM_ENCRYPT); + /* + * Harden common str/mem functions kills the kunit-try-catch thread + * before checking the fault. + */ + KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_FORTIFY_SOURCE); + ptr =3D kmalloc(size, GFP_KERNEL | __GFP_ZERO); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr); -- LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}