From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=113.46.200.224 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793692291; b=Z5hgAHzKrHVElhX6fKCKWNEpMvXF1H7CnVhMzsUv9AOV5a11CvYLUCGmUKC0Wq3eh0ZL wSHPPRXgw73QizC5CPAXShHwWWVww6UjlLjHrGdnh7kGHjU/dnTtXxcJv3qhSCtvGyHfI fmlwEDw+ozGqi7zJ0DpYtxJyiZClpGqwwrnfqrScBSjfpiqptqKKlPWvZnTkFHh9mZXer 1zyauTP2KePHgOs7ocr1jwxQKDE+RzffGnVKD4V+fbqsmord5J/PUvCyPaY6K7/bhf0wN pv3MaC9TFVE1QTACEopNG/GIc/AcX1uv/QrJgAXgvt+dNC0g8O/VzoDDDkjpHRlaxoA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793692291; h=DMARC-Filter:dkim-signature:Received:Received:Received:From:To:CC: Subject:Date:Message-ID:X-Mailer:In-Reply-To:References:MIME-Version: Content-Type:X-Originating-IP:X-ClientProxiedBy; bh=TebaHDOnvqGDEokgRq+1L6bEUOTWP5a/DEIL9I18Csw=; b=yu4a05mwwuewBTTFMg9NfTFm8i++ZlD+fIWxlKzVH43Yg0A+0yfiNv6YOspeItJaGHnm dFVsekk/adiAM4SCKrswJPVf5cpTeJTeqbl5vQctW38NlWN7ygoCjfs9dSqzNmhZntC3W O8G9pq+QnzPeIKQYGF3rVXtRnQjs8v8jw1xXjTV7AOFwPtmTXRVHjwtFKHHrQ9URNi24n iUEL2yXrvcGIBZp64Bod3mL9O1X+RMy7Yrg05gRb587SoAxUqugLcPF3OhxknUmzsKIRM 5DBO8Au958z8qNFIdOnUgbb215RVH70/Ny5nkyVABJiiM3jWr8DtWX5lVEvUzjbtMJA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; dkim=pass header.d=huawei.com header.i=@huawei.com header.a=rsa-sha256 header.s=dkim header.b=QI+HDJ7a; arc=none smtp.remote-ip=113.46.200.224 Received: from canpmsgout09.his.huawei.com (canpmsgout09.his.huawei.com [113.46.200.224]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9423E606A32D; Tue, 3 Nov 2026 07:51:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 9423E606A32D 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 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=huawei.com header.i=@huawei.com header.a=rsa-sha256 header.s=dkim header.b=QI+HDJ7a dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=TebaHDOnvqGDEokgRq+1L6bEUOTWP5a/DEIL9I18Csw=; b=QI+HDJ7aYe8MfkCuKU7dL0yAZWuoB3bd+VDsT3gwYFTrsb1hr0Ak2GGm/2Z6sOlQpEj5dAjwC cId1TF3zeh0ixUSq0abtvLa21nW0CfqfPxdhz33HmksBh+4BEDjl0JhHFhOJfM/aVOLBEKsblB5 VKzoMwEuXC7338Pwxfrh4PQ= Received: from mail.maildlp.com (unknown [172.19.163.214]) by canpmsgout09.his.huawei.com (SkyGuard) with ESMTPS id 4jJgk41ShFz1cyqr; Tue, 3 Nov 2026 15:51:08 +0800 (CST) Received: from whupemk100010.china.huawei.com (unknown [7.152.184.41]) by mail.maildlp.com (Postfix) with ESMTPS id A1D724056C; Tue, 3 Nov 2026 15:51:18 +0800 (CST) Received: from octopus.huawei.com (10.67.174.191) by whupemk100010.china.huawei.com (7.152.184.41) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.45; Tue, 3 Nov 2026 15:51:17 +0800 From: Cai Xinchen To: , , , , , , CC: , , , , Subject: [PATCH -next 1/9] lockdown: Add break in lockdown_write Date: Tue, 3 Nov 2026 16:24:13 +0800 Message-ID: <20261103082421.3033195-2-caixinchen1@huawei.com> X-Mailer: git-send-email 2.18.0.huawei.25 In-Reply-To: <20261103082421.3033195-1-caixinchen1@huawei.com> References: <20261103082421.3033195-1-caixinchen1@huawei.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain X-ClientProxiedBy: kwepems100002.china.huawei.com (7.221.188.206) To whupemk100010.china.huawei.com (7.152.184.41) After the label is matched successful, any other levels judgements are meaningless. Therefore, add break to return early Signed-off-by: Cai Xinchen --- security/lockdown/lockdown.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/security/lockdown/lockdown.c b/security/lockdown/lockdown.c index 8d46886d2cca..263dcc80d839 100644 --- a/security/lockdown/lockdown.c +++ b/security/lockdown/lockdown.c @@ -139,8 +139,10 @@ static ssize_t lockdown_write(struct file *file, const char __user *buf, enum lockdown_reason level = lockdown_levels[i]; const char *label = lockdown_reasons[level]; - if (label && !strcmp(state, label)) + if (label && !strcmp(state, label)) { err = lock_kernel_down("securityfs", level); + break; + } } kfree(state); -- 2.18.0.huawei.25