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Wysocki" , 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 , Stephen Boyd Subject: Re: [PATCH v7 09/12] clk: imx: scu: Fix kfree() of static memory on setting driver_override Message-ID: References: <20220419113435.246203-1-krzysztof.kozlowski@linaro.org> <20220419113435.246203-10-krzysztof.kozlowski@linaro.org> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220419113435.246203-10-krzysztof.kozlowski@linaro.org> X-ClientProxiedBy: VI1PR04CA0112.eurprd04.prod.outlook.com (2603:10a6:803:64::47) To AM6PR04MB4679.eurprd04.prod.outlook.com (2603:10a6:20b:15::32) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 0b16d65d-000e-41d6-e96a-08da2543b7db X-MS-TrafficTypeDiagnostic: DB7PR04MB4044:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?BCz2QCshCOi4ZeSXE8b1I7cS8K7UHTXw9xrI7CG5yggrvzxgQ3o7NXilCBqx?= =?us-ascii?Q?MBdGJlOQ9c7LEvVyAfDxfRS+GDst17FojVkVlGMCHfZQFDHFyfXjuAWAdQbY?= =?us-ascii?Q?vvlpU1gCdRAiaaYwD3M6CCTzw23w+OD2LvyBQXG2/7wEzrpwdnmLE4UKFcmQ?= =?us-ascii?Q?hY/oJj3Spo4I4CtkFzzSCbG0Yp+Hwbws94S8gCb0Hc/8sa4P7ekdseYv+VW5?= =?us-ascii?Q?wGNHsLSSVJG6TnlBBh/oPDtI1Lp9qe5ZzTUk5yYvhOtini0iIKyq0D5vijoI?= =?us-ascii?Q?qPzUnmm5+8NCiEjz3z+gbv2AxMyD7j0pjeV8/ZTN5EuyZmrLdBE/M/2wCb41?= =?us-ascii?Q?0bYECZ2WSddeOl7xdq9wRTkfV0cnaAo2pq8zm0KNQJDcwMBdItXw7pxR5xaK?= =?us-ascii?Q?TG1epSG+8guETItU6vuJbjaprICuyvF4CZampGdsn2UL43IAQKjxFn2Bg6ZB?= =?us-ascii?Q?qTAsWVgo2WSqEDLsijHPA/wirAQB/jsj9pLm9rpFBVOIXUJTO+EJwrfdswuH?= =?us-ascii?Q?mbOMWmT4+O1gUb3T5VE2lG8QGcYa7EfnI3eTCStF9v4cQZNvuuS9QWAxhyhd?= =?us-ascii?Q?QKAcrt1M6RNT41CfXcTZaKNLPb/USpuELSs0FOkUa41wKdOOzYbPLQXUO0ZO?= =?us-ascii?Q?AOLez2x7Se7wHJZemJ+CXzWykzNqDXXr0yR7WgFhI0+/tPq37DtXCzWS7zHZ?= =?us-ascii?Q?Efqd8fFNEMO3EywH+eGv36rLa9kQmte3Vx6bG9OKI4TS0xczUzclenwhnjYT?= =?us-ascii?Q?hivsa68pK7/0dIaBpJfs4MfF0R/xIR3eOFduyiXQr8aZomhDs4R8AIILIBy3?= =?us-ascii?Q?HJjS4Ft2svtcYCc35wm0TzrJCBbKhWHl0JYg5pofZJZ/b2ADFk82olcH2gB6?= =?us-ascii?Q?sOYY7R6zQPHssGqQAxfvQyVg9WebvoycEVPkmKGJ+z6/o4+rtVrMP/zE454B?= =?us-ascii?Q?Xz/uHAgiZD3OSo5pFcvay4BlXBfsM7x2YJM3lUUSBMmwHXJktSbk2at+r73K?= =?us-ascii?Q?ramqvXtrGEUoeb+0/L9fyKnfseh0Dxof3HvWmO6U9q3eq2QuQ7POf8cBEu+x?= =?us-ascii?Q?lKXgCdiWGGFRNgTpj+Af52ayaEu2gVQNunqMzPrvmP6F1l8ZxliWrk8okGGh?= =?us-ascii?Q?oRzE9Jnfo0qyK4YxK+VLM+hHPJZ1FI/Oq3Gx0vVlQ/yGdxLtIoQz5veeAhjg?= =?us-ascii?Q?FcP9K1bV6VYEDwWfaGACC8tKhP3+zdJ5wOlO8okvxQmfq2Jh2iRRO/CS8bqk?= =?us-ascii?Q?wJoIJBEEK4CHvD56FE7w2Qk5xNd8QVr//nphvgmhD2aUt7qbTMPQpAjt2fTJ?= =?us-ascii?Q?R+cBC/EtyU06/7BSGrz+ieUnEJS1LMELcwIrjJGVVpSmv3rtUPCsKJYgv6Me?= =?us-ascii?Q?FSvblUTXsNWmb8ZlGoUwz+cC7rIMMkFSeB73RCqpTafIGCjtPtVPSdwVygg3?= =?us-ascii?Q?QRohEzFnfonDXNGk8hke7bzDc6N/9BjMyY5Nufd94YqeE6vzNnOJWLYTMgK9?= =?us-ascii?Q?C78KTCV5d1g4u5wjtxljpXnDWGijL6pa3VT7ztbaSuwhuTNhDPW04bbCKrpD?= =?us-ascii?Q?oNR+G56+YV9c1+XUIzNHaXcU4YGSRswFvr+tP0SAJ4qjtv5lXMtzDr76/Ndb?= =?us-ascii?Q?MvjCQ9amgiD3CKe5vFvdpHvIvJg93jvIgqjuPW4c+GNyZtVM9yKo2ehm8xAT?= =?us-ascii?Q?rVFIqCvydWedqN9TZjbjmIajR7eSmwmiLt2zjQWAF/4tFiH2yIMUExZ6RaAJ?= =?us-ascii?Q?qTyyklbGTg=3D=3D?= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 0b16d65d-000e-41d6-e96a-08da2543b7db X-MS-Exchange-CrossTenant-AuthSource: AM6PR04MB4679.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Apr 2022 16:10:00.5900 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: v3HnGcuBHLfKFmDVj6eiPp6VrPLDLwF51A8skzBje5u2zZVyyN42KSAwrCF01fRtEB+vjCcKSBifUsAvfL/BYw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR04MB4044 Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org On 22-04-19 13:34:32, Krzysztof Kozlowski wrote: > 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: 77d8f3068c63 ("clk: imx: scu: add two cells binding support") > Signed-off-by: Krzysztof Kozlowski > Acked-by: Stephen Boyd Reviewed-by: Abel Vesa > --- > drivers/clk/imx/clk-scu.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c > index ed3c01d2e8ae..4996f1d94657 100644 > --- a/drivers/clk/imx/clk-scu.c > +++ b/drivers/clk/imx/clk-scu.c > @@ -683,7 +683,12 @@ struct clk_hw *imx_clk_scu_alloc_dev(const char *name, > return ERR_PTR(ret); > } > > - pdev->driver_override = "imx-scu-clk"; > + ret = driver_set_override(&pdev->dev, &pdev->driver_override, > + "imx-scu-clk", strlen("imx-scu-clk")); > + if (ret) { > + platform_device_put(pdev); > + return ERR_PTR(ret); > + } > > ret = imx_clk_scu_attach_pd(&pdev->dev, rsrc_id); > if (ret) > -- > 2.32.0 > 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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 51F03C433F5 for ; Sat, 23 Apr 2022 16:11:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:In-Reply-To:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Wysocki" , 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 , Stephen Boyd Subject: Re: [PATCH v7 09/12] clk: imx: scu: Fix kfree() of static memory on setting driver_override Message-ID: References: <20220419113435.246203-1-krzysztof.kozlowski@linaro.org> <20220419113435.246203-10-krzysztof.kozlowski@linaro.org> Content-Disposition: inline In-Reply-To: <20220419113435.246203-10-krzysztof.kozlowski@linaro.org> X-ClientProxiedBy: VI1PR04CA0112.eurprd04.prod.outlook.com (2603:10a6:803:64::47) To AM6PR04MB4679.eurprd04.prod.outlook.com (2603:10a6:20b:15::32) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 0b16d65d-000e-41d6-e96a-08da2543b7db X-MS-TrafficTypeDiagnostic: DB7PR04MB4044:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 22-04-19 13:34:32, Krzysztof Kozlowski wrote: > 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: 77d8f3068c63 ("clk: imx: scu: add two cells binding support") > Signed-off-by: Krzysztof Kozlowski > Acked-by: Stephen Boyd Reviewed-by: Abel Vesa > --- > drivers/clk/imx/clk-scu.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c > index ed3c01d2e8ae..4996f1d94657 100644 > --- a/drivers/clk/imx/clk-scu.c > +++ b/drivers/clk/imx/clk-scu.c > @@ -683,7 +683,12 @@ struct clk_hw *imx_clk_scu_alloc_dev(const char *name, > return ERR_PTR(ret); > } > > - pdev->driver_override = "imx-scu-clk"; > + ret = driver_set_override(&pdev->dev, &pdev->driver_override, > + "imx-scu-clk", strlen("imx-scu-clk")); > + if (ret) { > + platform_device_put(pdev); > + return ERR_PTR(ret); > + } > > ret = imx_clk_scu_attach_pd(&pdev->dev, rsrc_id); > if (ret) > -- > 2.32.0 > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C4182C433F5 for ; Mon, 25 Apr 2022 13:31:11 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 05FA017D6; 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Sat, 23 Apr 2022 16:10:00 +0000 Date: Sat, 23 Apr 2022 19:09:56 +0300 From: Abel Vesa To: Krzysztof Kozlowski Subject: Re: [PATCH v7 09/12] clk: imx: scu: Fix kfree() of static memory on setting driver_override Message-ID: References: <20220419113435.246203-1-krzysztof.kozlowski@linaro.org> <20220419113435.246203-10-krzysztof.kozlowski@linaro.org> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220419113435.246203-10-krzysztof.kozlowski@linaro.org> X-ClientProxiedBy: VI1PR04CA0112.eurprd04.prod.outlook.com (2603:10a6:803:64::47) To AM6PR04MB4679.eurprd04.prod.outlook.com (2603:10a6:20b:15::32) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 0b16d65d-000e-41d6-e96a-08da2543b7db X-MS-TrafficTypeDiagnostic: DB7PR04MB4044:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; 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Wysocki" , linux-pci@vger.kernel.org, linux-remoteproc@vger.kernel.org, alsa-devel@alsa-project.org, Bjorn Andersson , Vineeth Vijayan , Alexander Gordeev , "K. Y. Srinivasan" , linux-clk@vger.kernel.org, linux-s390@vger.kernel.org, Wei Liu , Stephen Hemminger , Dexuan Cui , Andy Shevchenko , Andy Gross , NXP Linux Team , Christian Borntraeger , Heiko Carstens , Vasily Gorbik , linux-arm-msm@vger.kernel.org, Haiyang Zhang , linux-spi@vger.kernel.org, Rasmus Villemoes , Bjorn Helgaas , virtualization@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, Mathieu Poirier , Stephen Boyd , Greg Kroah-Hartman , Peter Oberparleiter , linux-kernel@vger.kernel.org, Sven Schnelle , Linus Torvalds X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" On 22-04-19 13:34:32, Krzysztof Kozlowski wrote: > 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: 77d8f3068c63 ("clk: imx: scu: add two cells binding support") > Signed-off-by: Krzysztof Kozlowski > Acked-by: Stephen Boyd Reviewed-by: Abel Vesa > --- > drivers/clk/imx/clk-scu.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c > index ed3c01d2e8ae..4996f1d94657 100644 > --- a/drivers/clk/imx/clk-scu.c > +++ b/drivers/clk/imx/clk-scu.c > @@ -683,7 +683,12 @@ struct clk_hw *imx_clk_scu_alloc_dev(const char *name, > return ERR_PTR(ret); > } > > - pdev->driver_override = "imx-scu-clk"; > + ret = driver_set_override(&pdev->dev, &pdev->driver_override, > + "imx-scu-clk", strlen("imx-scu-clk")); > + if (ret) { > + platform_device_put(pdev); > + return ERR_PTR(ret); > + } > > ret = imx_clk_scu_attach_pd(&pdev->dev, rsrc_id); > if (ret) > -- > 2.32.0 >