From patchwork Sat Apr 1 18:43:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Pearson X-Patchwork-Id: 78162 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp1384406vqo; Sat, 1 Apr 2023 11:58:33 -0700 (PDT) X-Google-Smtp-Source: AKy350YzQ3MskOld4als8KbTs6wmBUPCM8mFmxqLhMqUTOgTJMU1OjC3N6xcrGRCySKvGVUGJXly X-Received: by 2002:a17:906:341a:b0:931:de76:c2e8 with SMTP id c26-20020a170906341a00b00931de76c2e8mr34227481ejb.9.1680375513753; Sat, 01 Apr 2023 11:58:33 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1680375513; cv=none; d=google.com; s=arc-20160816; b=dAmcA66TQ4cIgYcpjAt8KYYro7vmmT6rKyviCkB5H5XAmHDu+e6h8IADzRQR29wckw Reh6hy+ZC4WknO1h4bI2r1qcb/W7jeawE1duMOv268TLlBKsPWF+zt3EvG3BFeYVjP5+ K4MH9FJjLnFEd84eI2uXAPJxO+6i1VAIkTNsjuvAytONYSOOv+OA5QIk3H3IF9vEDyUf +9kAhjQ4LoTmIjnmYfDhD9HPjKFPHPxpo9nZWvsDtDBa2vR1I/Qnv9lt+NIvKJzLfMOl V9dfI0uz2p/YvDGKBb9NgoiP+SWXkNwwkwIZagJm9bMWXuUSenOr0fSypeW2T4PCBMWY eklw== 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 :feedback-id:dkim-signature:dkim-signature; bh=NzdlQHPf2ubVQgJ2HZpDAwS0DtAbvUSrLwWN7up3J78=; b=mmsHB98HunMuQan7Wh5NnUSJeyD+IDtDz8OaqOiqus4rrDgmW8oCrKv0g4RnmsrVY7 ++U6aTb0SuH7iUbQP2o1OYbNZOe/XmdbCGos/0ju++YyhD6Ul9da9r9C5VRNoCfsgpRD zra8GexAarMaHr9Bxstg8wHWYx4Mfyqa+AuEOuSVCKcqG/LTK/Je+4WwNkNWPtmdoRvd IKBTf25yChxAgbJ1q75htCYb55txIKmKCNRPePYmFHVWzxk8Pjo70DW7s627q1X9fmDX AaUQqvW6I9WHHj+nr3UEd4mAtcq7SPQabtN+jFvrnPlYnoM0qoYpaqgMhKxcspTxzOa/ CUcQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@squebb.ca header.s=fm3 header.b=KZmKcnlK; dkim=pass header.i=@messagingengine.com header.s=fm2 header.b=t2fNE5E2; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id q4-20020a1709064c8400b0093b83e8dc21si4841407eju.26.2023.04.01.11.58.09; Sat, 01 Apr 2023 11:58:33 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@squebb.ca header.s=fm3 header.b=KZmKcnlK; dkim=pass header.i=@messagingengine.com header.s=fm2 header.b=t2fNE5E2; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229887AbjDASoI (ORCPT + 99 others); Sat, 1 Apr 2023 14:44:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58966 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229811AbjDASoD (ORCPT ); Sat, 1 Apr 2023 14:44:03 -0400 Received: from wout4-smtp.messagingengine.com (wout4-smtp.messagingengine.com [64.147.123.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 85A857694; Sat, 1 Apr 2023 11:44:02 -0700 (PDT) Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailout.west.internal (Postfix) with ESMTP id 6DF2F3200917; Sat, 1 Apr 2023 14:43:59 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute4.internal (MEProxy); Sat, 01 Apr 2023 14:44:00 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=squebb.ca; h=cc :cc:content-transfer-encoding:content-type:date:date:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to; s=fm3; t=1680374639; x= 1680461039; bh=NzdlQHPf2ubVQgJ2HZpDAwS0DtAbvUSrLwWN7up3J78=; b=K ZmKcnlKnb0ftNbtcdgOmgHNqT8d/XGAe2faoivoB1BBEy55hWKpJQuJoxH31Alm+ xoRiATcwAFyAtjHFNqkw6o88CW/qvKOeqoqmzI0Rggdr3eeh++6oR2Lao+ZXT+v+ jlv8KNKTW3/RRSd8UvNQwFmKWKo+qGoWOi04orMKzfGTCLSE0JdbElBjQBsI8LIe NwFH+tr4Wt6jCNuBzoPrlzby4MKM5Ea7GRLKpw7dK7QHsqenOKslXVXQSJQYUaGw R7JsJtLdTLssjuLgf3P+uuLfAfbRpsV3PgpUchlrhi/vp7x5pxV5VO95CmysCU4t 8oNqCNzON6rEhz3xW89MA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:date:date:feedback-id:feedback-id:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm2; t=1680374639; x= 1680461039; bh=NzdlQHPf2ubVQgJ2HZpDAwS0DtAbvUSrLwWN7up3J78=; b=t 2fNE5E2ltcsimc1VKb+onhUveuswjjEQU7FjkEr25UdU6EqTYBBELWlhJjbUWl48 zgMEFep6KmlMU2afC8NyT6NzSs+AqMi5o/EEYJ0iypvs76sIv2y4grBveVCR/Pdl 3k85sYzGmEsNsD0UB0xWmxLz1xSgOrLM8dSwzHbn5upYx8HkPiUnOJA/pE2D0VJi cyI6swUtjJLzXpQOQAqRjGvu/Y+ktHBHILX6OLVQ+UbcLaE5+Qy9qje2ILxERvfw 3Jp+dfL20i2vx/ZifgC0X3lUOuiURBdM/gBPeVnQP+zblI4T/7iGPlYrzjWrrNAH uDYIidAjq8vseVdd+a36A== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrvdeifedguddvlecutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfgh necuuegrihhlohhuthemuceftddtnecuogetfedtuddqtdduucdludehmdenucfjughrpe fhvfevufffkffojghfggfgsedtkeertdertddtnecuhfhrohhmpeforghrkhcurfgvrghr shhonhcuoehmphgvrghrshhonhdqlhgvnhhovhhosehsqhhuvggssgdrtggrqeenucggtf frrghtthgvrhhnpeevtdelgfeggfejtedtvdfgkefhuefguedtkeeffeduueduvdeiuedt leejvdfhvdenucffohhmrghinhepkhgvrhhnvghlrdhorhhgnecuvehluhhsthgvrhfuih iivgeptdenucfrrghrrghmpehmrghilhhfrhhomhepmhhpvggrrhhsohhnqdhlvghnohhv ohesshhquhgvsggsrdgtrg X-ME-Proxy: Feedback-ID: ibe194615:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Sat, 1 Apr 2023 14:43:57 -0400 (EDT) From: Mark Pearson To: mpearson-lenovo@squebb.ca Cc: hdegoede@redhat.com, markgross@kernel.org, W_Armin@gmx.de, mirsad.todorovac@alu.unizg.hr, linux@weissschuh.net, Mario.Limonciello@amd.com, platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/2] platform/x86: think-lmi: Fix memory leaks when parsing ThinkStation WMI strings Date: Sat, 1 Apr 2023 14:43:44 -0400 Message-Id: <20230401184345.208960-1-mpearson-lenovo@squebb.ca> X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_LOW,SPF_HELO_PASS,SPF_PASS autolearn=unavailable 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-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1762001434607235746?= X-GMAIL-MSGID: =?utf-8?q?1762001434607235746?= My previous commit introduced a memory leak where the item allocated from tlmi_setting was not freed. This commit also renames it to avoid confusion with the similarly name variable in the same function. Fixes: 8a02d70679fc ("platform/x86: think-lmi: Add possible_values for ThinkStation") Reported-by: Mirsad Todorovac Link: https://lore.kernel.org/lkml/df26ff45-8933-f2b3-25f4-6ee51ccda7d8@gmx.de/T/ Signed-off-by: Mark Pearson --- This patch series builds on top of the proposed patch from Armin Wolf "platform/x86: think-lmi: Fix memory leak when showing current settings" drivers/platform/x86/think-lmi.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c index 88da7bcb6ce9..ad952b49617b 100644 --- a/drivers/platform/x86/think-lmi.c +++ b/drivers/platform/x86/think-lmi.c @@ -1459,10 +1459,10 @@ static int tlmi_analyze(void) * name string. * Try and pull that out if it's available. */ - char *item, *optstart, *optend; + char *optitem, *optstart, *optend; - if (!tlmi_setting(setting->index, &item, LENOVO_BIOS_SETTING_GUID)) { - optstart = strstr(item, "[Optional:"); + if (!tlmi_setting(setting->index, &optitem, LENOVO_BIOS_SETTING_GUID)) { + optstart = strstr(optitem, "[Optional:"); if (optstart) { optstart += strlen("[Optional:"); optend = strstr(optstart, "]"); @@ -1471,6 +1471,7 @@ static int tlmi_analyze(void) kstrndup(optstart, optend - optstart, GFP_KERNEL); } + kfree(optitem); } } /* From patchwork Sat Apr 1 18:43:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Pearson X-Patchwork-Id: 78161 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp1383199vqo; Sat, 1 Apr 2023 11:54:16 -0700 (PDT) X-Google-Smtp-Source: AKy350aoXaBWgKkw4hbuT0et/8DqMNF40ESm+OfaMKcHeqnMwZ9RH85ltEuYkmD/nVo0w6kLs/fF X-Received: by 2002:a17:906:3093:b0:931:6641:9897 with SMTP id 19-20020a170906309300b0093166419897mr30448542ejv.44.1680375256321; Sat, 01 Apr 2023 11:54:16 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1680375256; cv=none; d=google.com; s=arc-20160816; b=zirwxzCsLTiHU88h4ixDX87FIukvhSAkf3MXRyayvqwpytishIiXjry/oYLY1jMb5I 4/09stDyGXeNeJVq3A9OIQssIUCW/+QqCoc7GJIOxH+pO/PrkNG7D4C4smqg4sM9BG6l nCK0sI6BKxTkCNY5ZXTTqC/xMoKZj2Hn/7ii6DKvBrTboOiklG6YpwUrGBV870/6GuKF IcYtCX3ag1fW20XAyfY0Vz1opzo4GyqrrNIapovOBk5uIuwNyuXUIAuKmI22okI6/Rj+ pFf/rl64AyzTHmJNMd2JRG4U7yYbLi/uvivM99TzdOR4AWEbqLsTwiPyqR6rv/wrDERk NVWQ== 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 :feedback-id:dkim-signature:dkim-signature; bh=EgK3/TiL28np4Zgt5b+Y1BW3uvD4i1QZBW4nZflddTo=; b=zbbAp3zwzlETQMn9jBphYJpVwNn+liF0tnvmwaliBuiZGlBYRXjtMSxVYxJyB+75uI /N2mY0XWHSlqHgFBeOBQsoJiNSr875t/4uJ1T1kI4g9A+X5gaesP2UuDvvL2HbMUFvnw RE55/yJrNBEP3FXmEibb3n6mUeGz8S5EakQDzgyqw1iqgFMXaUX9GoM2JKweol9Pkkxq Kcl/w2oD+/q5gbQxWy7qCZuQpx/78Nx0lXFZX/wMfs8b9eseANSSSu5ExM/i+q+SwsE3 Mb9y6wRBJfq+BZxTBhqzeMZCeBFASf1sK1gtKoTrZHfVy0hwPVqqCDgkXvW/OHuYYv3E qc4Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@squebb.ca header.s=fm3 header.b="kQlG/2aT"; dkim=pass header.i=@messagingengine.com header.s=fm2 header.b=MAmzMeNO; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. 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Clean up the display in the current_value_show function so the options part is not displayed. Fixes: a40cd7ef22fb ("platform/x86: think-lmi: Add WMI interface support on Lenovo platforms") Reported by Mario Limoncello Link: https://github.com/fwupd/fwupd/issues/5077#issuecomment-1488730526 Signed-off-by: Mark Pearson --- drivers/platform/x86/think-lmi.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c index ad952b49617b..29e94db03238 100644 --- a/drivers/platform/x86/think-lmi.c +++ b/drivers/platform/x86/think-lmi.c @@ -920,7 +920,7 @@ static ssize_t display_name_show(struct kobject *kobj, struct kobj_attribute *at static ssize_t current_value_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj); - char *item, *value; + char *item, *value, *p; int ret; ret = tlmi_setting(setting->index, &item, LENOVO_BIOS_SETTING_GUID); @@ -931,11 +931,13 @@ static ssize_t current_value_show(struct kobject *kobj, struct kobj_attribute *a value = strpbrk(item, ","); if (!value || value == item || !strlen(value + 1)) ret = -EINVAL; - else - ret = sysfs_emit(buf, "%s\n", value + 1); - + else { + /* On Workstations remove the Options part after the value */ + p = strchrnul(value, ';'); + *p = '\0'; + ret = sysfs_emit(buf, "%s\n", value + 1); + } kfree(item); - return ret; }