From: Abel Vesa <abel.vesa@nxp.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Stuart Yoder <stuyoder@gmail.com>,
"K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
Wei Liu <wei.liu@kernel.org>, Dexuan Cui <decui@microsoft.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Vineeth Vijayan <vneethv@linux.ibm.com>,
Peter Oberparleiter <oberpar@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Andy Gross <agross@kernel.org>,
linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org,
NXP Linux Team <linux-imx@nxp.com>,
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 <torvalds@linux-foundation.org>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Andy Shevchenko <andy.shevchenko@gmail.com>,
Stephen Boyd <sboyd@kernel.org>
Subject: Re: [PATCH v7 09/12] clk: imx: scu: Fix kfree() of static memory on setting driver_override
Date: Sat, 23 Apr 2022 19:09:56 +0300 [thread overview]
Message-ID: <YmQk1ORliYWEgjKx@abelvesa> (raw)
In-Reply-To: <20220419113435.246203-10-krzysztof.kozlowski@linaro.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 <krzysztof.kozlowski@linaro.org>
> Acked-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
> ---
> 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
>
next prev parent reply other threads:[~2022-04-23 16:10 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-19 11:34 [PATCH v7 00/12] Fix broken usage of driver_override (and kfree of static memory) Krzysztof Kozlowski
2022-04-19 11:34 ` [PATCH v7 01/12] driver: platform: Add helper for safer setting of driver_override Krzysztof Kozlowski
2022-04-20 17:12 ` Rafael J. Wysocki
2022-04-19 11:34 ` [PATCH v7 02/12] amba: Use driver_set_override() instead of open-coding Krzysztof Kozlowski
2022-04-19 11:34 ` [PATCH v7 03/12] fsl-mc: " Krzysztof Kozlowski
2022-04-19 11:34 ` [PATCH v7 04/12] hv: " Krzysztof Kozlowski
2022-04-19 11:34 ` [PATCH v7 05/12] PCI: " Krzysztof Kozlowski
2022-04-19 11:34 ` [PATCH v7 06/12] s390/cio: " Krzysztof Kozlowski
2022-04-19 11:34 ` [PATCH v7 07/12] spi: Use helper for safer setting of driver_override Krzysztof Kozlowski
2022-04-19 11:34 ` [PATCH v7 08/12] vdpa: " Krzysztof Kozlowski
2022-04-19 11:34 ` [PATCH v7 09/12] clk: imx: scu: Fix kfree() of static memory on setting driver_override Krzysztof Kozlowski
2022-04-23 16:09 ` Abel Vesa [this message]
2022-04-19 11:34 ` [PATCH v7 10/12] slimbus: qcom-ngd: " Krzysztof Kozlowski
2022-04-19 11:34 ` [PATCH v7 11/12] rpmsg: Constify local variable in field store macro Krzysztof Kozlowski
2022-04-19 11:34 ` [PATCH v7 12/12] rpmsg: Fix kfree() of static memory on setting driver_override Krzysztof Kozlowski
[not found] ` <CGME20220429122942eucas1p1820d0cd17a871d4953bac2b3de1dcdd9@eucas1p1.samsung.com>
2022-04-29 12:29 ` Marek Szyprowski
2022-04-29 14:16 ` Krzysztof Kozlowski
2022-04-29 14:51 ` Marek Szyprowski
2022-04-29 18:29 ` Krzysztof Kozlowski
2022-04-20 9:20 ` [PATCH v7 00/12] Fix broken usage of driver_override (and kfree of static memory) Krzysztof Kozlowski
2022-04-22 14:54 ` Greg Kroah-Hartman
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