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@xxxxxxxxx>
> Fixes: 15097c7a1adc ("iio: buffer: wrap all buffer attributes into iio_dev_attr")
Tested-by: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx>
on SAMA5D2
