From patchwork Fri Dec 6 11:41:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?5p2O6LGq5p2w?= <15074444048@163.com> X-Patchwork-Id: 13897095 X-Patchwork-Delegate: paul@paul-moore.com Received: from m16.mail.163.com (m16.mail.163.com [220.197.31.3]) by smtp.subspace.kernel.org (Postfix) with ESMTP id EB4101FBEA2 for ; Fri, 6 Dec 2024 11:41:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=220.197.31.3 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733485323; cv=none; b=nP/JChkiKrs3twGB5aQv5qIeUoJ35rh+en1OArCubpcZufDzK0ZKqVV9UPKwhHsDlwL+7Ykvaw6dYMgyS7DzRXBaV1C75h+19hu3tg+m5xn4q10ZJnrYwouoLwpiZWpomfZDVmN5VGhNDIbXlr+m83wcuHLbWNTJkGchyP6DWe8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733485323; c=relaxed/simple; bh=PzHcvH2V5dGKwcgDVsjspgeBcICqxUtmPek7gx4K/hU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=jh85picninPbFqtlnNHRhI3B9gvh3DQwKRx8SFpo8AZC2j0SWnZ3Ht2MANU3bsHPFg/Md/ObvEERfLD3LdJTc9bEyFSq5AnDyKk2V7Jy95S5b1DyHIPI/Q4ImjK11n3lI0qgCG9SQFWmltRFEky9QLs71bID22cpo9PrIOFnaj0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=KfYjIUuw; arc=none smtp.client-ip=220.197.31.3 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="KfYjIUuw" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-Id:MIME-Version; bh=TJOYJ 7UIGW4QayZIaYv7pbzV7gX+FikENzBjvOV8tNA=; b=KfYjIUuwuG1rKIa6NT/Ue hG+ulyBNO03i+iDHRg1boHkhCaZyHJzl0RZPe6sMAdhQrhS+sFi3bCIhS9a92Ubh 9Onzn/2ryLmJfA12C3CP6/MWCN6Pk1UVvjBsvmdt/yvEPbb3MMzaSrKZQ/OPU78o kIRchjCcO5JHZ+4woq85lM= Received: from localhost.localdomain (unknown []) by gzga-smtp-mtada-g1-4 (Coremail) with SMTP id _____wDnTz7L4lJnUPZfAA--.13083S2; Fri, 06 Dec 2024 19:41:01 +0800 (CST) From: 15074444048@163.com To: paul@paul-moore.com, jmorris@namei.org, serge@hallyn.com, linux-security-module@vger.kernel.org Cc: 15074444048@163.com, lihaojie Subject: [PATCH] lsm: add reserved flag in lsm_prop struct Date: Fri, 6 Dec 2024 19:41:08 +0800 Message-Id: <20241206114108.342819-1-15074444048@163.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: _____wDnTz7L4lJnUPZfAA--.13083S2 X-Coremail-Antispam: 1Uf129KBjvJXoWxJr4UWF15Cry7uF1xAw4xJFb_yoW8Wr4rpF 4DC3yxGr4DAFWDW3ykuF13G3ySq34kWw42qFyI9w40yr9rtryIvrZ3Cay2ka4YyFs5C398 Aa1qg3yvyF1DuaDanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07Uco7_UUUUU= X-CM-SenderInfo: rprvilauuukiiuy6il2tof0z/1tbiOR2tUGdS23W5GQAAsi From: lihaojie lsm_prop size is controled by macro, lsm_prop size will be 0 when marco don't define. add flag to alloc sm_prop basic size. empty struct will make target_ref & target_comm in audit_context located at the same address, __member_size of target_comm is same as __member_size of target_ref, so strscpy warn buffer overflow when compile time. Signed-off-by: lihaojie --- include/linux/security.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/security.h b/include/linux/security.h index cbdba435b798..f502deecb142 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -164,6 +164,7 @@ struct lsm_prop { struct lsm_prop_smack smack; struct lsm_prop_apparmor apparmor; struct lsm_prop_bpf bpf; + u8 reserved; }; extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1];