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=-9.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,T_DKIMWL_WL_HIGH,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 F0033C28CC0 for ; Thu, 30 May 2019 04:49:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CA50F25CD7 for ; Thu, 30 May 2019 04:49:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559191767; bh=2r2AVMBcDo2NVf7ZljylpUx4Chpoy5HgvQ9SSUgJUCs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=rwnJjgB9vfX20C06/k+MGaP7vF1NbTpZAen2ubDWnLyozqou8mrq40H2DUuwsXywE ZiByWvFtA60QkGOKeQj1Yr5ChYFn2AgPmWoxV356pNAxSwDXbhteSveYMCInrqDzTO 3CzbtIqWsx/rAaQGsuE13Ind1VWvQsnviUVeT74g= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728425AbfE3Et0 (ORCPT ); Thu, 30 May 2019 00:49:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:49964 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728417AbfE3DLM (ORCPT ); Wed, 29 May 2019 23:11:12 -0400 Received: from localhost (ip67-88-213-2.z213-88-67.customer.algx.net [67.88.213.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1D2D5244D2; Thu, 30 May 2019 03:11:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559185872; bh=2r2AVMBcDo2NVf7ZljylpUx4Chpoy5HgvQ9SSUgJUCs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uMVk1343aHB/e9ZQIKPUr8FcnFnGj6uFvpTeaJHmJwMDm/lYNPD9gqabLNc004t9B HP0AxX/+46d8kFkdc0mHtIEM9Cw5nmroPvOG75tHYzzR+6BiihTqss86VCR0dRbjK2 XrJQm2uEKBts1dxEAx+z0Pl1A6iT13A4hL5LbinM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Arnd Bergmann , Martin Schwidefsky , Sasha Levin Subject: [PATCH 5.1 215/405] s390: zcrypt: initialize variables before_use Date: Wed, 29 May 2019 20:03:33 -0700 Message-Id: <20190530030551.968108708@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190530030540.291644921@linuxfoundation.org> References: <20190530030540.291644921@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org [ Upstream commit 913140e221567b3ecd21b4242257a7e3fa279026 ] The 'func_code' variable gets printed in debug statements without a prior initialization in multiple functions, as reported when building with clang: drivers/s390/crypto/zcrypt_api.c:659:6: warning: variable 'func_code' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized] if (mex->outputdatalength < mex->inputdatalength) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/s390/crypto/zcrypt_api.c:725:29: note: uninitialized use occurs here trace_s390_zcrypt_rep(mex, func_code, rc, ^~~~~~~~~ drivers/s390/crypto/zcrypt_api.c:659:2: note: remove the 'if' if its condition is always false if (mex->outputdatalength < mex->inputdatalength) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/s390/crypto/zcrypt_api.c:654:24: note: initialize the variable 'func_code' to silence this warning unsigned int func_code; ^ Add initializations to all affected code paths to shut up the warning and make the warning output consistent. Signed-off-by: Arnd Bergmann Signed-off-by: Martin Schwidefsky Signed-off-by: Sasha Levin --- drivers/s390/crypto/zcrypt_api.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c index 689c2af7026a3..c31b2d31cd832 100644 --- a/drivers/s390/crypto/zcrypt_api.c +++ b/drivers/s390/crypto/zcrypt_api.c @@ -659,6 +659,7 @@ static long zcrypt_rsa_modexpo(struct ap_perms *perms, trace_s390_zcrypt_req(mex, TP_ICARSAMODEXPO); if (mex->outputdatalength < mex->inputdatalength) { + func_code = 0; rc = -EINVAL; goto out; } @@ -742,6 +743,7 @@ static long zcrypt_rsa_crt(struct ap_perms *perms, trace_s390_zcrypt_req(crt, TP_ICARSACRT); if (crt->outputdatalength < crt->inputdatalength) { + func_code = 0; rc = -EINVAL; goto out; } @@ -951,6 +953,7 @@ static long zcrypt_send_ep11_cprb(struct ap_perms *perms, targets = kcalloc(target_num, sizeof(*targets), GFP_KERNEL); if (!targets) { + func_code = 0; rc = -ENOMEM; goto out; } @@ -958,6 +961,7 @@ static long zcrypt_send_ep11_cprb(struct ap_perms *perms, uptr = (struct ep11_target_dev __force __user *) xcrb->targets; if (copy_from_user(targets, uptr, target_num * sizeof(*targets))) { + func_code = 0; rc = -EFAULT; goto out_free; } -- 2.20.1