From patchwork Wed Mar 16 15:08:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 12782783 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E270CC433FE for ; Wed, 16 Mar 2022 15:09:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242098AbiCPPKb (ORCPT ); Wed, 16 Mar 2022 11:10:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44150 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357009AbiCPPKW (ORCPT ); Wed, 16 Mar 2022 11:10:22 -0400 Received: from smtp-relay-internal-1.canonical.com (smtp-relay-internal-1.canonical.com [185.125.188.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2B247673D2 for ; Wed, 16 Mar 2022 08:09:06 -0700 (PDT) Received: from mail-wm1-f69.google.com (mail-wm1-f69.google.com [209.85.128.69]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-internal-1.canonical.com (Postfix) with ESMTPS id 638AF3F7DF for ; Wed, 16 Mar 2022 15:09:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1647443344; bh=T7JLnH9mqiYxWSJ2Xi+hqpmFTONALX95DZP9Prs/CTQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=i2Xb9MhzTdE+lE9OaTOdm5lssR7LIHkhHZcQk+GxGLVjMfzP4q1EpOl3OmDLCn2Hs xU9kPLuL9sHGb7idnp2OtNcmSuB4xVMRzL3HzTHZdNW1ymEgq4viYGLlH0hz/iM2kF OUHlYcrpm53zPfWgiyUoaW6Zazou2yZE2B49ntkQLPLldE016K5wwGugtm6h2iFTWP IuRj79EG5Tb2kM6rxrh0JB9pk8XmeNKc7VUJQpofWCNT6Q3E+wN7lypAPutcjtoM2C vPsjUybK5SbgBJvpheJtVoNPys+5w99huk6JJGlK7Q5kLoDEsM/xD372DKnYJDkptG cyKm6ONJJSLhw== Received: by mail-wm1-f69.google.com with SMTP id m34-20020a05600c3b2200b0038115c73361so810639wms.5 for ; Wed, 16 Mar 2022 08:09:04 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=T7JLnH9mqiYxWSJ2Xi+hqpmFTONALX95DZP9Prs/CTQ=; b=o9LVAx0iaJi7pMItK2rX2KrYbtW6+tUuMgrWKolvVarlGhM4yua+RsUH5FQmzmP6Q8 alZybIJIhfrqDwCN0ib1JaPHEzyA4xUapjKvNK833GLQ+/lucOee7ZsqfptB0shPWfZ6 ESUyhHhCy+xAlKl00MqHt9eUwEhDOu8X+mEyN6NoW83yrSr8m1rgQlhh4wb48JqvcH8y 19M6mVnV9Bpx0/ZvHGe/Momzv7spC1N7E0fQCQKc57SqV19tpVeasolZgkIKqV4G7/sF yQWKz6WpkG+ECqb2lO7M9ATrH9fZ2gy4PmmUPZgmaHXXg+FlDej7xTOhV2miAGc6L5VL 9I6w== X-Gm-Message-State: AOAM533LRyA3pVRLU3A5wh8sqDs/Jn1Cg2nwy9r6V6YoQ/hiYqS6tYmQ li3moui/MU8/zJoP63ILpfxYiniGpKypkXjYnu+Kc1FCc824WLYRR8ilvIz74Rn5oAP8lWO/m/m 4WloxVGplr0Z+UB57XhzQgU+Wv1w0CZEagZvrv4DPr2Q= X-Received: by 2002:adf:816b:0:b0:203:7fae:a245 with SMTP id 98-20020adf816b000000b002037faea245mr273602wrm.619.1647443343706; Wed, 16 Mar 2022 08:09:03 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyiZS5X9++Ir6ARAdY07waJfT3FXmo4jW7vzpJuptfIiZFzTOsJAweK7fuoToT0HCAq1Xxe+Q== X-Received: by 2002:adf:816b:0:b0:203:7fae:a245 with SMTP id 98-20020adf816b000000b002037faea245mr273589wrm.619.1647443343503; Wed, 16 Mar 2022 08:09:03 -0700 (PDT) Received: from localhost.localdomain (78-11-189-27.static.ip.netia.com.pl. [78.11.189.27]) by smtp.gmail.com with ESMTPSA id u18-20020adfdd52000000b001f04e9f215fsm1895105wrm.53.2022.03.16.08.09.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Mar 2022 08:09:01 -0700 (PDT) From: Krzysztof Kozlowski To: Greg Kroah-Hartman , "Rafael J. Wysocki" Cc: Stuart Yoder , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Wei Liu , Dexuan Cui , Bjorn Helgaas , Bjorn Andersson , Mathieu Poirier , Vineeth Vijayan , Peter Oberparleiter , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Andy Gross , linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, NXP Linux Team , linux-arm-kernel@lists.infradead.org, linux-hyperv@vger.kernel.org, linux-pci@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-s390@vger.kernel.org, linux-arm-msm@vger.kernel.org, alsa-devel@alsa-project.org, linux-spi@vger.kernel.org, virtualization@lists.linux-foundation.org, Linus Torvalds , Rasmus Villemoes , Andy Shevchenko , Krzysztof Kozlowski , stable@vger.kernel.org, Srinivas Kandagatla Subject: [PATCH v5 10/11] slimbus: qcom-ngd: Fix kfree() of static memory on setting driver_override Date: Wed, 16 Mar 2022 16:08:02 +0100 Message-Id: <20220316150803.421897-4-krzysztof.kozlowski@canonical.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220316150533.421349-1-krzysztof.kozlowski@canonical.com> References: <20220316150533.421349-1-krzysztof.kozlowski@canonical.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The driver_override field from platform driver should not be initialized from static memory (string literal) because the core later kfree() it, for example when driver_override is set via sysfs. Use dedicated helper to set driver_override properly. Fixes: 917809e2280b ("slimbus: ngd: Add qcom SLIMBus NGD driver") Cc: Signed-off-by: Krzysztof Kozlowski Reviewed-by: Srinivas Kandagatla --- drivers/slimbus/qcom-ngd-ctrl.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c index 0f29a08b4c09..0aa8408464ad 100644 --- a/drivers/slimbus/qcom-ngd-ctrl.c +++ b/drivers/slimbus/qcom-ngd-ctrl.c @@ -1434,6 +1434,7 @@ static int of_qcom_slim_ngd_register(struct device *parent, const struct of_device_id *match; struct device_node *node; u32 id; + int ret; match = of_match_node(qcom_slim_ngd_dt_match, parent->of_node); data = match->data; @@ -1455,7 +1456,17 @@ static int of_qcom_slim_ngd_register(struct device *parent, } ngd->id = id; ngd->pdev->dev.parent = parent; - ngd->pdev->driver_override = QCOM_SLIM_NGD_DRV_NAME; + + ret = driver_set_override(&ngd->pdev->dev, + &ngd->pdev->driver_override, + QCOM_SLIM_NGD_DRV_NAME, + strlen(QCOM_SLIM_NGD_DRV_NAME)); + if (ret) { + platform_device_put(ngd->pdev); + kfree(ngd); + of_node_put(node); + return ret; + } ngd->pdev->dev.of_node = node; ctrl->ngd = ngd;