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Fri, 10 Nov 2023 10:27:44 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1782202621223805816 X-GMAIL-MSGID: 1782202621223805816 acpi_object *obj is unused in this function, so delete it, also delete a unnecessary kfree(obj); Signed-off-by: Harshit Mogalapalli Reviewed-by: Ilpo Järvinen --- drivers/platform/x86/hp/hp-bioscfg/bioscfg.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c b/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c index 5798b49ddaba..0b563582d90d 100644 --- a/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c +++ b/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c @@ -575,82 +575,80 @@ static void release_attributes_data(void) /** * hp_add_other_attributes() - Initialize HP custom attributes not * reported by BIOS and required to support Secure Platform and Sure * Start. * * @attr_type: Custom HP attribute not reported by BIOS * * Initialize all 2 types of attributes: Platform and Sure Start * object. Populates each attribute types respective properties * under sysfs files. * * Returns zero(0) if successful. Otherwise, a negative value. */ static int hp_add_other_attributes(int attr_type) { struct kobject *attr_name_kobj; - union acpi_object *obj = NULL; int ret; char *attr_name; mutex_lock(&bioscfg_drv.mutex); attr_name_kobj = kzalloc(sizeof(*attr_name_kobj), GFP_KERNEL); if (!attr_name_kobj) { ret = -ENOMEM; goto err_other_attr_init; } /* Check if attribute type is supported */ switch (attr_type) { case HPWMI_SECURE_PLATFORM_TYPE: attr_name_kobj->kset = bioscfg_drv.authentication_dir_kset; attr_name = SPM_STR; break; case HPWMI_SURE_START_TYPE: attr_name_kobj->kset = bioscfg_drv.main_dir_kset; attr_name = SURE_START_STR; break; default: pr_err("Error: Unknown attr_type: %d\n", attr_type); ret = -EINVAL; goto err_other_attr_init; } ret = kobject_init_and_add(attr_name_kobj, &attr_name_ktype, NULL, "%s", attr_name); if (ret) { pr_err("Error encountered [%d]\n", ret); kobject_put(attr_name_kobj); goto err_other_attr_init; } /* Populate attribute data */ switch (attr_type) { case HPWMI_SECURE_PLATFORM_TYPE: ret = hp_populate_secure_platform_data(attr_name_kobj); if (ret) goto err_other_attr_init; break; case HPWMI_SURE_START_TYPE: ret = hp_populate_sure_start_data(attr_name_kobj); if (ret) goto err_other_attr_init; break; default: ret = -EINVAL; goto err_other_attr_init; } mutex_unlock(&bioscfg_drv.mutex); return 0; err_other_attr_init: mutex_unlock(&bioscfg_drv.mutex); - kfree(obj); return ret; } From patchwork Fri Nov 10 14:29:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Harshit Mogalapalli X-Patchwork-Id: 163879 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b129:0:b0:403:3b70:6f57 with SMTP id q9csp1300721vqs; Fri, 10 Nov 2023 10:23:23 -0800 (PST) X-Google-Smtp-Source: AGHT+IFe5KR+RQmKmCm6uMZkTC7wTYezuFXkZ+DlreuuVgRyrMD50PKQ7tvExcUyUnOQrW9zGgta X-Received: by 2002:a05:6e02:20c4:b0:359:439b:f25d with SMTP id 4-20020a056e0220c400b00359439bf25dmr126840ilq.24.1699640603166; Fri, 10 Nov 2023 10:23:23 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1699640603; cv=none; d=google.com; s=arc-20160816; b=H4brSEhhj51rNScIdtLLMWn8I6AvHXse1uTzmYjZfqn7zUFUfSThvtyHuKAct3dNaE 5Y/zVsZ5nROqubtk1lOExOqaMOFLbtsUQWOvvWn1G3itPXcMXB/D5GhTNwhBTdN9qRvy l9seLbfGO80uI0zJhODGA3fJq8MjqnTF/rpwLsMg5JybPm5/4cI/WIPg3vvkzadle20E vpce4nqDnIGSESAHhBibtCDZ8tHpxQzVEs4N0sDRArdE0QNNMKxsip1KvCgvCUAe4r46 V3Qh9LMqilZ1+/Faq+ToT5ZEVFE1vXkOf6FIk+IZkH2Gd7piGxLQoQAITl1r6WCBpvsB msFA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=k8d1cotThVqQ5somJC2AYN30Z0cn4dxTNW2i+PUkPMY=; fh=YRxemmcaHY6sEJjOQnh/QgYDMEtZ6d1JiMzHL5HIkZw=; b=wxxPuqqmVnHnht4ZkLPLJlf6wzPpYnB9BuwXW1SzdK7jmbmYfl3pAKS8roRUnbeTDA YdlV/wGvp3XiLcAt0K+CGkihguhktn1sZ5YiI6pEVhook/iGiuQSheDd0GHV1ikLdrfR 2jm5RL7nyFIe+od85mvjRmpvTk6IlwsKkgfpmCs8tLecxs0ydKwhvOxXH/dZeJZQP2mH RgCJSq2guyvxAQBhJoyDdycnSeuV+Oh1in47ynlSAnIszIgTdRTK5MchuFqg7mcfYg9U k+s40o1oeOji7HZJuEsdyeznzhBM20ZMSDtv7hIpokvGui26NGaN3UFnojPMU8SDVThL ocsg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2023-03-30 header.b=04R89OBu; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.33 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Received: from lipwig.vger.email (lipwig.vger.email. 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Fri, 10 Nov 2023 14:29:39 +0000 Received: from pps.filterd (iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 3AACoBM3024992; Fri, 10 Nov 2023 14:29:38 GMT Received: from pps.reinject (localhost [127.0.0.1]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 3u9fr6y1fc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 10 Nov 2023 14:29:38 +0000 Received: from iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 3AAEQwWL000777; Fri, 10 Nov 2023 14:29:37 GMT Received: from ca-dev112.us.oracle.com (ca-dev112.us.oracle.com [10.129.136.47]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTP id 3u9fr6y1bq-2; Fri, 10 Nov 2023 14:29:37 +0000 From: Harshit Mogalapalli To: Jorge Lopez , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Mark Gross , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org Cc: dan.carpenter@linaro.org, kernel-janitors@vger.kernel.org, error27@gmail.com, vegard.nossum@oracle.com, harshit.m.mogalapalli@oracle.com, darren.kenny@oracle.com Subject: [PATCH v2 2/4] platform/x86: hp-bioscfg: Simplify return check in hp_add_other_attributes() Date: Fri, 10 Nov 2023 06:29:17 -0800 Message-ID: <20231110142921.3398072-2-harshit.m.mogalapalli@oracle.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231110142921.3398072-1-harshit.m.mogalapalli@oracle.com> References: <20231110142921.3398072-1-harshit.m.mogalapalli@oracle.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-10_11,2023-11-09_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 malwarescore=0 phishscore=0 mlxlogscore=999 adultscore=0 mlxscore=0 spamscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2311100120 X-Proofpoint-GUID: wrHYY_2VxULbkL_HhzV5y817nlITz8QX X-Proofpoint-ORIG-GUID: wrHYY_2VxULbkL_HhzV5y817nlITz8QX X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lipwig.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (lipwig.vger.email [0.0.0.0]); Fri, 10 Nov 2023 10:22:54 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1782202344954005724 X-GMAIL-MSGID: 1782202344954005724 All cases in switch-case have a same goto on error, move the return check out of the switch. This is a cleanup. Signed-off-by: Harshit Mogalapalli --- drivers/platform/x86/hp/hp-bioscfg/bioscfg.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c b/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c index 0b563582d90d..3b735b071a01 100644 --- a/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c +++ b/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c @@ -575,79 +575,77 @@ static void release_attributes_data(void) /** * hp_add_other_attributes() - Initialize HP custom attributes not * reported by BIOS and required to support Secure Platform and Sure * Start. * * @attr_type: Custom HP attribute not reported by BIOS * * Initialize all 2 types of attributes: Platform and Sure Start * object. Populates each attribute types respective properties * under sysfs files. * * Returns zero(0) if successful. Otherwise, a negative value. */ static int hp_add_other_attributes(int attr_type) { struct kobject *attr_name_kobj; int ret; char *attr_name; mutex_lock(&bioscfg_drv.mutex); attr_name_kobj = kzalloc(sizeof(*attr_name_kobj), GFP_KERNEL); if (!attr_name_kobj) { ret = -ENOMEM; goto err_other_attr_init; } /* Check if attribute type is supported */ switch (attr_type) { case HPWMI_SECURE_PLATFORM_TYPE: attr_name_kobj->kset = bioscfg_drv.authentication_dir_kset; attr_name = SPM_STR; break; case HPWMI_SURE_START_TYPE: attr_name_kobj->kset = bioscfg_drv.main_dir_kset; attr_name = SURE_START_STR; break; default: pr_err("Error: Unknown attr_type: %d\n", attr_type); ret = -EINVAL; goto err_other_attr_init; } ret = kobject_init_and_add(attr_name_kobj, &attr_name_ktype, NULL, "%s", attr_name); if (ret) { pr_err("Error encountered [%d]\n", ret); kobject_put(attr_name_kobj); goto err_other_attr_init; } /* Populate attribute data */ switch (attr_type) { case HPWMI_SECURE_PLATFORM_TYPE: ret = hp_populate_secure_platform_data(attr_name_kobj); - if (ret) - goto err_other_attr_init; break; case HPWMI_SURE_START_TYPE: ret = hp_populate_sure_start_data(attr_name_kobj); - if (ret) - goto err_other_attr_init; break; default: ret = -EINVAL; - goto err_other_attr_init; } + if (ret) + goto err_other_attr_init; + mutex_unlock(&bioscfg_drv.mutex); return 0; err_other_attr_init: mutex_unlock(&bioscfg_drv.mutex); return ret; } From patchwork Fri Nov 10 14:29:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Harshit Mogalapalli X-Patchwork-Id: 163948 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b129:0:b0:403:3b70:6f57 with SMTP id q9csp1336290vqs; Fri, 10 Nov 2023 11:29:41 -0800 (PST) X-Google-Smtp-Source: AGHT+IFim7mH1Y3VvSz1cxakuS+5jsAdVIRXHTo7vnLO8nLoGFUAnRPz9AbCfky+aKlvrML+qbcD X-Received: by 2002:a05:6e02:1907:b0:359:4199:1fee with SMTP id w7-20020a056e02190700b0035941991feemr482424ilu.12.1699644581091; Fri, 10 Nov 2023 11:29:41 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1699644581; cv=none; d=google.com; s=arc-20160816; b=TIaFRUzL2KbL0v96XjO/hZzw2assE5syrzgnUlg99+qqOsepfEZK0FCLm+VgoqbO0b AjHRWqKxh8pjbVCfJygdrbzad7/1esQZamCNPeL3MPncpTB0z6m9FmBsnbm5TUj9Jvfx LfjN75Ej5IxVMn6c1b9Mm6HrJ0M5pE/LuYplQlPHxQMu4jylPCvWaocquzMR/9zzZx1O 6PStZdrWLd3Zq9hs2cdzUlAwxz44JGi0ycPGubk7D4dM8D68F2ZgN0F92GdVNyKJoCqz V4hq9wGujvtcWKiDYlsl0B/BmAYvO++BFrnFCktz4ZVhcOoS9XOKARTKSkg8aAyFCHEy nNYg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=49XN1GLQjreRWjL6oCqCzu/eSUD1SvMvLMvnNGAx4Rg=; fh=YRxemmcaHY6sEJjOQnh/QgYDMEtZ6d1JiMzHL5HIkZw=; b=gE52Z1gtMIifs1tR+WhZwAii/9IpyAD3EA3xf0+Bw6gB593Z4AYcIMGGG6p/R7op99 sGU1dCk4JyRot+uV/vGlH+nJ9TxShg49J4Ma3JmKwbMUfgtoBNqpaqVPzEF1zHmbJ96S xgaOxTBYUr8WP3/ohr+I0Zbd3Khf2eB12MjoBNR510FneVh4skIoSRLjWsGHfAbtvOzE aVMtDnfYxvX3ygVZQTNHA7XaTnTmkp2TsSK7qHFzcrV4aY8na4hKSDpBWCn18nSSTP2g 13r7KZIIo2iIVnZJrprO8jQ5vBSd9WxIvVhdmzUJaR2+VGTseKhc01VHQ+W8j43tkm0f 7AMg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2023-03-30 header.b=FxwDtfT8; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.33 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Received: from lipwig.vger.email (lipwig.vger.email. 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Fri, 10 Nov 2023 11:29:29 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1782200973873778957 X-GMAIL-MSGID: 1782206516036998578 attr_name_kobj's memory allocation is done with mutex_lock held, this probably is not needed. Move the mutex_lock downward so we need not unlock when allocation fails. Suggested-by: Ilpo Järvinen Signed-off-by: Harshit Mogalapalli --- drivers/platform/x86/hp/hp-bioscfg/bioscfg.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c b/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c index 3b735b071a01..351d782f3e96 100644 --- a/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c +++ b/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c @@ -575,77 +575,75 @@ static void release_attributes_data(void) /** * hp_add_other_attributes() - Initialize HP custom attributes not * reported by BIOS and required to support Secure Platform and Sure * Start. * * @attr_type: Custom HP attribute not reported by BIOS * * Initialize all 2 types of attributes: Platform and Sure Start * object. Populates each attribute types respective properties * under sysfs files. * * Returns zero(0) if successful. Otherwise, a negative value. */ static int hp_add_other_attributes(int attr_type) { struct kobject *attr_name_kobj; int ret; char *attr_name; - mutex_lock(&bioscfg_drv.mutex); - attr_name_kobj = kzalloc(sizeof(*attr_name_kobj), GFP_KERNEL); - if (!attr_name_kobj) { - ret = -ENOMEM; - goto err_other_attr_init; - } + if (!attr_name_kobj) + return -ENOMEM; + + mutex_lock(&bioscfg_drv.mutex); /* Check if attribute type is supported */ switch (attr_type) { case HPWMI_SECURE_PLATFORM_TYPE: attr_name_kobj->kset = bioscfg_drv.authentication_dir_kset; attr_name = SPM_STR; break; case HPWMI_SURE_START_TYPE: attr_name_kobj->kset = bioscfg_drv.main_dir_kset; attr_name = SURE_START_STR; break; default: pr_err("Error: Unknown attr_type: %d\n", attr_type); ret = -EINVAL; goto err_other_attr_init; } ret = kobject_init_and_add(attr_name_kobj, &attr_name_ktype, NULL, "%s", attr_name); if (ret) { pr_err("Error encountered [%d]\n", ret); kobject_put(attr_name_kobj); goto err_other_attr_init; } /* Populate attribute data */ switch (attr_type) { case HPWMI_SECURE_PLATFORM_TYPE: ret = hp_populate_secure_platform_data(attr_name_kobj); break; case HPWMI_SURE_START_TYPE: ret = hp_populate_sure_start_data(attr_name_kobj); break; default: ret = -EINVAL; } if (ret) goto err_other_attr_init; mutex_unlock(&bioscfg_drv.mutex); return 0; err_other_attr_init: mutex_unlock(&bioscfg_drv.mutex); return ret; } From patchwork Fri Nov 10 14:29:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Harshit Mogalapalli X-Patchwork-Id: 163871 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b129:0:b0:403:3b70:6f57 with SMTP id q9csp1298175vqs; Fri, 10 Nov 2023 10:18:50 -0800 (PST) X-Google-Smtp-Source: AGHT+IHkPYph8AZO0Xh7IbR8WtkI+ywqEFbXwsbhx8mTkUcupj81z/1JdO/7HiGcsluuvNmFviUA X-Received: by 2002:a05:6a21:3e14:b0:180:f7a1:cfae with SMTP id bk20-20020a056a213e1400b00180f7a1cfaemr9773881pzc.56.1699640330271; Fri, 10 Nov 2023 10:18:50 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1699640330; cv=none; d=google.com; s=arc-20160816; b=dX1Trc74ooDaC2ZE0CSQou9UcoYXFCBEejxN8hw+rDhkRlZLakZOxTrOTmpDvhi1uG IG7ByNbtRQq7ovsQ4BTLlA9IFFYeUReCkIeMCVw2GkEVAiCFpm3NwLREgQ+soM/Vtncw qAJA3jNfS2yVPgf5bmviU9XmPm+i35nR8FBW3s4xyWXI4MdpzTkVkUJnNBXC+j3eVnOW p7RhMNxSGUpFIUMHOrdDQnIRj4QTXEkFGNRX3enQCPJcjzwX5oIdn0zRF/U8agVcOa3l jNmnBlAkU2QYm02EQuSQ+JbM607VlMd8+tHTv9oPSc8PJR5pz5SDfq5nd+5MfGdgBoNt 33+w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=sBjpIK++JXnPTXaWZkhseiMkubPswd2UzXR7UEnOCSk=; fh=hvXYu+39xkzzPxwpNcH/2ax0hAzfL6QZ8c2IOzQ9n/s=; b=vCGJXH9W/nzEukbwZpxOa2NjQg8Z+iwY+A5N92+JJXqKETkUKyYNGIClKGv36Chl4o TxSpDfvXt5sOVH+TeH5WxbptGHPsStpr5kDFv2WFCP6KqNDEMKMpHFwUeOuvgaeAajyX nAC5gcaSH+Hn9t0qmJudmMWQfdzUMfawfzEJB3Mx5V0pGfuA57ZAVTnng/Zkm75/qr4h eqlhwecq8gohpVQq12EkctSgAifxzouA/TMzB15TLg43Qd+kiGZ6dTAsR/7LTU7T7t9H 2PXvkm/s2V3C+PzMSKhFMLlgSKuSzEZzPRDh/8MU1UEoZX39m3EC1So4BP9QMCkvaNNQ toHQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2023-03-30 header.b=JjyYfIHX; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Received: from snail.vger.email (snail.vger.email. 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Fri, 10 Nov 2023 14:29:45 +0000 Received: from pps.filterd (iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 3AACpJVB024860; Fri, 10 Nov 2023 14:29:43 GMT Received: from pps.reinject (localhost [127.0.0.1]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 3u9fr6y1hc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 10 Nov 2023 14:29:43 +0000 Received: from iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 3AAEQwWP000777; Fri, 10 Nov 2023 14:29:43 GMT Received: from ca-dev112.us.oracle.com (ca-dev112.us.oracle.com [10.129.136.47]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTP id 3u9fr6y1bq-4; Fri, 10 Nov 2023 14:29:43 +0000 From: Harshit Mogalapalli To: Jorge Lopez , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Mark Gross , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org Cc: dan.carpenter@linaro.org, kernel-janitors@vger.kernel.org, error27@gmail.com, vegard.nossum@oracle.com, harshit.m.mogalapalli@oracle.com, darren.kenny@oracle.com, kernel test robot Subject: [PATCH v2 4/4] platform/x86: hp-bioscfg: Fix error handling in hp_add_other_attributes() Date: Fri, 10 Nov 2023 06:29:19 -0800 Message-ID: <20231110142921.3398072-4-harshit.m.mogalapalli@oracle.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231110142921.3398072-1-harshit.m.mogalapalli@oracle.com> References: <20231110142921.3398072-1-harshit.m.mogalapalli@oracle.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-10_11,2023-11-09_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 malwarescore=0 phishscore=0 mlxlogscore=999 adultscore=0 mlxscore=0 spamscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2311100120 X-Proofpoint-ORIG-GUID: f495O1Enwq1l80b996G1gVIsuaffdqMb X-Proofpoint-GUID: f495O1Enwq1l80b996G1gVIsuaffdqMb X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H5,RCVD_IN_MSPIKE_WL, SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Fri, 10 Nov 2023 10:18:27 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1782201692566569482 X-GMAIL-MSGID: 1782202059082602972 We have two issues: 1. Memory leak of 'attr_name_kobj' in the error handling path. 2. When kobject_init_and_add() fails on every subsequent error path call kobject_put() to cleanup. Both of these issues will be fixed when we add kobject_put() in the goto label, as kfree() is already part of kobject_put(). Fixes: a34fc329b189 ("platform/x86: hp-bioscfg: bioscfg") Reported-by: kernel test robot Reported-by: Dan Carpenter Closes: https://lore.kernel.org/r/202309201412.on0VXJGo-lkp@intel.com/ Signed-off-by: Harshit Mogalapalli --- Only compile tested, based on static analysis v1-> v2: Split this into mutliple patches doing one thing in a patch. --- drivers/platform/x86/hp/hp-bioscfg/bioscfg.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c b/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c index 351d782f3e96..8c9f4f3227fc 100644 --- a/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c +++ b/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c @@ -575,75 +575,77 @@ static void release_attributes_data(void) /** * hp_add_other_attributes() - Initialize HP custom attributes not * reported by BIOS and required to support Secure Platform and Sure * Start. * * @attr_type: Custom HP attribute not reported by BIOS * * Initialize all 2 types of attributes: Platform and Sure Start * object. Populates each attribute types respective properties * under sysfs files. * * Returns zero(0) if successful. Otherwise, a negative value. */ static int hp_add_other_attributes(int attr_type) { struct kobject *attr_name_kobj; int ret; char *attr_name; attr_name_kobj = kzalloc(sizeof(*attr_name_kobj), GFP_KERNEL); if (!attr_name_kobj) return -ENOMEM; mutex_lock(&bioscfg_drv.mutex); /* Check if attribute type is supported */ switch (attr_type) { case HPWMI_SECURE_PLATFORM_TYPE: attr_name_kobj->kset = bioscfg_drv.authentication_dir_kset; attr_name = SPM_STR; break; case HPWMI_SURE_START_TYPE: attr_name_kobj->kset = bioscfg_drv.main_dir_kset; attr_name = SURE_START_STR; break; default: pr_err("Error: Unknown attr_type: %d\n", attr_type); ret = -EINVAL; - goto err_other_attr_init; + kfree(attr_name_kobj); + goto unlock_drv_mutex; } ret = kobject_init_and_add(attr_name_kobj, &attr_name_ktype, NULL, "%s", attr_name); if (ret) { pr_err("Error encountered [%d]\n", ret); - kobject_put(attr_name_kobj); goto err_other_attr_init; } /* Populate attribute data */ switch (attr_type) { case HPWMI_SECURE_PLATFORM_TYPE: ret = hp_populate_secure_platform_data(attr_name_kobj); break; case HPWMI_SURE_START_TYPE: ret = hp_populate_sure_start_data(attr_name_kobj); break; default: ret = -EINVAL; } if (ret) goto err_other_attr_init; mutex_unlock(&bioscfg_drv.mutex); return 0; err_other_attr_init: + kobject_put(attr_name_kobj); +unlock_drv_mutex: mutex_unlock(&bioscfg_drv.mutex); return ret; }