From: Abel Vesa <abel.vesa@nxp.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Stuart Yoder <stuyoder@gmail.com>,
Laurentiu Tudor <laurentiu.tudor@nxp.com>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Fabio Estevam <festevam@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>,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
Mark Brown <broonie@kernel.org>,
"Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
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>,
stable@vger.kernel.org
Subject: Re: [PATCH v3 09/11] clk: imx: scu: Fix kfree() of static memory on setting driver_override
Date: Mon, 28 Feb 2022 12:55:05 +0200 [thread overview]
Message-ID: <YhyqCTWOK9lO1dNl@abelvesa> (raw)
In-Reply-To: <20220227135329.145862-3-krzysztof.kozlowski@canonical.com>
On 22-02-27 14:53:27, 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")
> Cc: <stable@vger.kernel.org>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.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 083da31dc3ea..4b2268b7d0d0 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"));
See my comment to patch 01/11.
I would like this to look like the following:
ret = driver_set_override(&pdev->dev, "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:[~2022-02-28 10:58 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-27 13:52 [PATCH v3 00/11] Fix broken usage of driver_override (and kfree of static memory) Krzysztof Kozlowski
2022-02-27 13:52 ` [PATCH v3 01/11] driver: platform: Add helper for safer setting of driver_override Krzysztof Kozlowski
2022-02-28 10:51 ` Abel Vesa
2022-02-28 11:30 ` Krzysztof Kozlowski
2022-02-28 11:56 ` Abel Vesa
2022-02-28 20:03 ` Bjorn Helgaas
2022-03-01 8:49 ` Krzysztof Kozlowski
2022-02-27 13:52 ` [PATCH v3 02/11] amba: Use driver_set_override() instead of open-coding Krzysztof Kozlowski
2022-02-27 13:52 ` [PATCH v3 03/11] fsl-mc: " Krzysztof Kozlowski
2022-02-27 13:52 ` [PATCH v3 04/11] hv: " Krzysztof Kozlowski
2022-02-27 15:53 ` Michael Kelley (LINUX)
2022-02-27 13:52 ` [PATCH v3 05/11] PCI: " Krzysztof Kozlowski
2022-02-28 20:06 ` Bjorn Helgaas
2022-03-01 8:41 ` Krzysztof Kozlowski
2022-02-27 13:52 ` [PATCH v3 06/11] s390: cio: " Krzysztof Kozlowski
2022-03-01 16:01 ` Vineeth Vijayan
2022-03-02 11:01 ` Krzysztof Kozlowski
2022-02-27 13:53 ` [PATCH v3 07/11] spi: Use helper for safer setting of driver_override Krzysztof Kozlowski
2022-02-28 13:07 ` Mark Brown
2022-02-27 13:53 ` [PATCH v3 08/11] vdpa: " Krzysztof Kozlowski
2022-02-27 13:53 ` [PATCH v3 09/11] clk: imx: scu: Fix kfree() of static memory on setting driver_override Krzysztof Kozlowski
2022-02-28 10:55 ` Abel Vesa [this message]
2022-02-27 13:53 ` [PATCH v3 10/11] slimbus: qcom-ngd: " Krzysztof Kozlowski
2022-03-01 17:28 ` Srinivas Kandagatla
2022-02-27 13:53 ` [PATCH v3 11/11] rpmsg: " Krzysztof Kozlowski
2022-03-11 20:19 ` Bjorn Andersson
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