From patchwork Tue Aug 13 11:53:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 13761872 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5CB851991AD; Tue, 13 Aug 2024 11:46:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.188 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723549615; cv=none; b=sQQvBU2Lrs3Habc1jc4kiSejtfOur0WziXdl2LouCNVsE46+ePLsw6w8L9WmHE01QVBslYdY3j3QPy8cVa9ItmpjZzXczYBobYxwtf+BqQy75+jI0CiNbCtGVFUwQZuVC/rqlF9WSHuaYS+Gm420J2UfiCO+U13hgZUKQkAzoOg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723549615; c=relaxed/simple; bh=r5BdEDtP0mypMR3yjszaHYFTiospBThuLrxuRmX8NF4=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=MnrLrLReqWA3QW2+FUI/1iEJ4AMz+9DnDT0SE4zpXMK9iE8VXJsTHGWB7tsqnNRd/72lq9ZUS7mgKk09B4CGe7yZbdzqCbjmTx94DwtATJTJjglKEerfbh8cREWpbQEIKVT5+8+hKQSes0SIIG7AAw25Rf4XLK/EyLfb+0eEuxA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.188 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.174]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4WjqMG4d12znd8c; Tue, 13 Aug 2024 19:45:30 +0800 (CST) Received: from kwepemi100008.china.huawei.com (unknown [7.221.188.57]) by mail.maildlp.com (Postfix) with ESMTPS id E6021140135; Tue, 13 Aug 2024 19:46:49 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemi100008.china.huawei.com (7.221.188.57) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Tue, 13 Aug 2024 19:46:49 +0800 From: Jinjie Ruan To: , , , , , , , , CC: Subject: [PATCH 1/3] kprobes: Annotate structs with __counted_by() Date: Tue, 13 Aug 2024 19:53:32 +0800 Message-ID: <20240813115334.3922580-2-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240813115334.3922580-1-ruanjinjie@huawei.com> References: <20240813115334.3922580-1-ruanjinjie@huawei.com> Precedence: bulk X-Mailing-List: linux-hardening@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To kwepemi100008.china.huawei.com (7.221.188.57) Add the __counted_by compiler attribute to the flexible array member stripes to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and CONFIG_FORTIFY_SOURCE. Signed-off-by: Jinjie Ruan --- kernel/kprobes.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/kprobes.c b/kernel/kprobes.c index da59c68df841..e6f7b0d3b29c 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -92,7 +92,7 @@ struct kprobe_insn_page { struct kprobe_insn_cache *cache; int nused; int ngarbage; - char slot_used[]; + char slot_used[] __counted_by(nused); }; #define KPROBE_INSN_PAGE_SIZE(slots) \