redonkable/alistair23-linux
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alistair23-linux/drivers/staging/greybus
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Dan Carpenter 329101244f staging: greybus: light: fix a couple double frees 
The problem is in gb_lights_request_handler().  If we get a request to
change the config then we release the light with gb_lights_light_release()
and re-allocated it.  However, if the allocation fails part way through
then we call gb_lights_light_release() again.  This can lead to a couple
different double frees where we haven't cleared out the original values:

	gb_lights_light_v4l2_unregister(light);
	...
	kfree(light->channels);
	kfree(light->name);

I also made a small change to how we set "light->channels_count = 0;".
The original code handled this part fine and did not cause a use after
free but it was sort of complicated to read.

Fixes: 2870b52bae ("greybus: lights: add lights implementation")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Link: https://lore.kernel.org/r/20190829122839.GA20116@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-03 09:39:10 +02:00
..
Documentation staging: greybus: remove license "boilerplate" 2019-08-27 19:02:26 +02:00
tools staging: greybus: remove license "boilerplate" 2019-08-27 19:02:26 +02:00
arche-apb-ctrl.c
arche-platform.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
arche_platform.h
audio_apbridgea.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
audio_apbridgea.h staging: greybus: remove license "boilerplate" 2019-08-27 19:02:26 +02:00
audio_codec.c
audio_codec.h staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
audio_gb.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
audio_manager.c staging: greybus: remove redundant assignment to variable is_empty 2019-07-22 07:34:10 +02:00
audio_manager.h
audio_manager_module.c
audio_manager_private.h
audio_manager_sysfs.c
audio_module.c
audio_topology.c
authentication.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
bootrom.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
camera.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
firmware.h staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
fw-core.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
fw-download.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
fw-management.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
gb-camera.h staging: greybus: fix up SPDX comment in .h files 2019-08-27 19:02:18 +02:00
gbphy.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
gbphy.h staging: greybus: fix up SPDX comment in .h files 2019-08-27 19:02:18 +02:00
gpio.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
greybus_authentication.h staging: greybus: remove license "boilerplate" 2019-08-27 19:02:26 +02:00
greybus_firmware.h staging: greybus: remove license "boilerplate" 2019-08-27 19:02:26 +02:00
hid.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
i2c.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
Kconfig staging: greybus: move es2 to drivers/greybus/ 2019-08-27 19:03:08 +02:00
light.c staging: greybus: light: fix a couple double frees 2019-09-03 09:39:10 +02:00
log.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
loopback.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
Makefile staging: greybus: move es2 to drivers/greybus/ 2019-08-27 19:03:08 +02:00
power_supply.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
pwm.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
raw.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
sdio.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
spi.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
spilib.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
spilib.h staging: greybus: fix up SPDX comment in .h files 2019-08-27 19:02:18 +02:00
TODO
uart.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
usb.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00
vibrator.c staging: greybus: move core include files to include/linux/greybus/ 2019-08-27 19:02:59 +02:00