From: <Claudiu.Beznea@microchip.com>
To: <mazziesaccount@gmail.com>, <matti.vaittinen@fi.rohmeurope.com>
Cc: alexandre.belloni@bootlin.com, lars@metafoo.de,
linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Eugen.Hristev@microchip.com, alexandru.ardelean@analog.com,
jic23@kernel.org
Subject: Re: [PATCH v3 04/10] iio: at91-sama5d2_adc: Fix unsafe buffer attributes
Date: Thu, 6 Oct 2022 08:34:17 +0000 [thread overview]
Message-ID: <2d150d6d-17bb-3e18-3174-e769f4cc8417@microchip.com> (raw)
In-Reply-To: <be69775aa302159f088b8b91894e6ec449bca65b.1664782676.git.mazziesaccount@gmail.com>
On 03.10.2022 11:11, Matti Vaittinen wrote:
> The iio_triggered_buffer_setup_ext() was changed by
> commit 15097c7a1adc ("iio: buffer: wrap all buffer attributes into iio_dev_attr")
> to silently expect that all attributes given in buffer_attrs array are
> device-attributes. This expectation was not forced by the API - and some
> drivers did register attributes created by IIO_CONST_ATTR().
>
> The added attribute "wrapping" does not copy the pointer to stored
> string constant and when the sysfs file is read the kernel will access
> to invalid location.
>
> Change the IIO_CONST_ATTRs from the driver to IIO_DEVICE_ATTR in order
> to prevent the invalid memory access.
>
> Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
> Fixes: 15097c7a1adc ("iio: buffer: wrap all buffer attributes into iio_dev_attr")
Tested-by: Claudiu Beznea <claudiu.beznea@microchip.com>
on SAMA5D2
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next prev parent reply other threads:[~2022-10-06 8:35 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-03 8:09 [PATCH v3 00/10] iio: Fix unsafe buffer attributes Matti Vaittinen
2022-10-03 8:11 ` [PATCH v3 04/10] iio: at91-sama5d2_adc: " Matti Vaittinen
2022-10-06 8:34 ` Claudiu.Beznea [this message]
2022-10-16 11:14 ` Jonathan Cameron
2022-10-03 8:13 ` [PATCH v3 09/10] iio: at91-sama5d2_adc: Use IIO_STATIC_CONST_DEVICE_ATTR() Matti Vaittinen
2022-10-06 8:35 ` Claudiu.Beznea
2022-10-03 8:13 ` [RFT PATCH v3 10/10] iio: Don't silently expect attribute types Matti Vaittinen
2022-10-03 8:43 ` Andy Shevchenko
2022-10-03 8:58 ` Matti Vaittinen
2022-10-03 9:02 ` Matti Vaittinen
2022-10-03 9:39 ` Andy Shevchenko
2022-10-03 9:42 ` Andy Shevchenko
2022-10-06 8:35 ` Claudiu.Beznea
2022-10-06 12:53 ` Matti Vaittinen
2022-10-09 17:38 ` Jonathan Cameron
2022-10-10 9:36 ` Matti Vaittinen
2022-11-05 14:45 ` Jonathan Cameron
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