From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 50D1AC433E4 for ; Mon, 22 Mar 2021 12:50:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 31AAE619D1 for ; Mon, 22 Mar 2021 12:50:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232109AbhCVMtd (ORCPT ); Mon, 22 Mar 2021 08:49:33 -0400 Received: from mail.kernel.org ([198.145.29.99]:35450 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231972AbhCVMk7 (ORCPT ); Mon, 22 Mar 2021 08:40:59 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 1D0BB619BD; Mon, 22 Mar 2021 12:39:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1616416751; bh=T2BsNNN7xneST+qY/2iePrIdTx/7Kg+ir1JLIr7JWxQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2rO5p1MOMeQauEyBgoGcrYS+M4Y7cZoO6zGPS0fZpdZediULoGp5YA9meYHvt/0ZZ encJ5Y3BTZmxC8ZrAmBhb6mOVODM+8EzgAy+vJYbQHDC8tlOqmGb6hJ+ngnFQ/iUVs KSYBwMRXzMXq8GMjBotai7ULsRrxFCat3sWfT4GM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Joe Perches , Miroslav Benes , Sergey Shtylyov , Jessica Yu , Sasha Levin Subject: [PATCH 5.10 073/157] module: avoid *goto*s in module_sig_check() Date: Mon, 22 Mar 2021 13:27:10 +0100 Message-Id: <20210322121936.076494456@linuxfoundation.org> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20210322121933.746237845@linuxfoundation.org> References: <20210322121933.746237845@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sergey Shtylyov [ Upstream commit 10ccd1abb808599a6dc7c9389560016ea3568085 ] Let's move the common handling of the non-fatal errors after the *switch* statement -- this avoids *goto*s inside that *switch*... Suggested-by: Joe Perches Reviewed-by: Miroslav Benes Signed-off-by: Sergey Shtylyov Signed-off-by: Jessica Yu Signed-off-by: Sasha Levin --- kernel/module.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/kernel/module.c b/kernel/module.c index 3b6dd8200d3d..f1be6b6a3a3d 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -2923,20 +2923,13 @@ static int module_sig_check(struct load_info *info, int flags) */ case -ENODATA: reason = "unsigned module"; - goto decide; + break; case -ENOPKG: reason = "module with unsupported crypto"; - goto decide; + break; case -ENOKEY: reason = "module with unavailable key"; - decide: - if (is_module_sig_enforced()) { - pr_notice("%s: loading of %s is rejected\n", - info->name, reason); - return -EKEYREJECTED; - } - - return security_locked_down(LOCKDOWN_MODULE_SIGNATURE); + break; /* All other errors are fatal, including nomem, unparseable * signatures and signature check failures - even if signatures @@ -2945,6 +2938,13 @@ static int module_sig_check(struct load_info *info, int flags) default: return err; } + + if (is_module_sig_enforced()) { + pr_notice("%s: loading of %s is rejected\n", info->name, reason); + return -EKEYREJECTED; + } + + return security_locked_down(LOCKDOWN_MODULE_SIGNATURE); } #else /* !CONFIG_MODULE_SIG */ static int module_sig_check(struct load_info *info, int flags) -- 2.30.1