Milan Zamazal 312f04ede2 iio: core: Prevent invalid memory access when there is no parent ... commit b2a6996990 upstream. Commit 813665564b ("iio: core: Convert to use firmware node handle instead of OF node") switched the kind of nodes to use for label retrieval in device registration. Probably an unwanted change in that commit was that if the device has no parent then NULL pointer is accessed. This is what happens in the stock IIO dummy driver when a new entry is created in configfs: # mkdir /sys/kernel/config/iio/devices/dummy/foo BUG: kernel NULL pointer dereference, address: ... ... Call Trace: __iio_device_register iio_dummy_probe Since there seems to be no reason to make a parent device of an IIO dummy device mandatory, let’s prevent the invalid memory access in __iio_device_register when the parent device is NULL. With this change, the IIO dummy driver works fine with configfs. Fixes: 813665564b ("iio: core: Convert to use firmware node handle instead of OF node") Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Milan Zamazal <mzamazal@redhat.com> Link: https://lore.kernel.org/r/20230719083208.88149-1-mzamazal@redhat.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-08-16 18:27:25 +02:00
..
accel	iio: accel: fxls8962af: fixup buffer scan element type	2023-07-19 16:21:46 +02:00
adc	iio: adc: ina2xx: avoid NULL pointer dereference on OF device match	2023-08-16 18:27:24 +02:00
addac	iio: addac: ad74413: fix resistance input processing	2023-06-09 10:34:19 +02:00
afe	…
amplifiers	…
buffer	…
cdc	…
chemical	…
common	iio: cros_ec: Fix the allocation size for cros_ec_command	2023-08-16 18:27:24 +02:00
dac	iio: dac: build ad5758 driver when AD5758 is selected	2023-06-09 10:34:19 +02:00
dummy	…
filter	…
frequency	iio: frequency: admv1013: propagate errors from regulator_get_voltage()	2023-08-16 18:27:24 +02:00
gyro	iio: hid: fix the retval in gyro_3d_capture_sample	2023-02-09 11:28:17 +01:00
health	…
humidity	…
imu	iio: imu: inv_icm42600: fix timestamp reset	2023-06-09 10:34:18 +02:00
light	iio: light: vcnl4035: fixed chip ID check	2023-06-09 10:34:18 +02:00
magnetometer	…
multiplexer	…
orientation	…
position	…
potentiometer	…
potentiostat	…
pressure	…
proximity	…
resolver	…
temperature	…
test	…
trigger	…
Kconfig	…
Makefile	…
TODO	…
iio_core.h	…
iio_core_trigger.h	…
industrialio-buffer.c	iio: buffer: make sure O_NONBLOCK is respected	2023-04-13 16:55:27 +02:00
industrialio-configfs.c	…
industrialio-core.c	iio: core: Prevent invalid memory access when there is no parent	2023-08-16 18:27:25 +02:00
industrialio-event.c	iio: fix memory leak in iio_device_register_eventset()	2022-12-31 13:33:10 +01:00
industrialio-sw-device.c	…
industrialio-sw-trigger.c	…
industrialio-trigger.c	…
industrialio-triggered-event.c	…
inkern.c	…