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linux/drivers/input/mouse
History
Dmitry Torokhov a2cbcd7013 Input: synaptics - fix crash when enabling pass-through port 
[ Upstream commit 08bd5b7c9a ]

When enabling a pass-through port an interrupt might come before psmouse
driver binds to the pass-through port. However synaptics sub-driver
tries to access psmouse instance presumably associated with the
pass-through port to figure out if only 1 byte of response or entire
protocol packet needs to be forwarded to the pass-through port and may
crash if psmouse instance has not been attached to the port yet.

Fix the crash by introducing open() and close() methods for the port and
check if the port is open before trying to access psmouse instance.
Because psmouse calls serio_open() only after attaching psmouse instance
to serio port instance this prevents the potential crash.

Reported-by: Takashi Iwai <tiwai@suse.de>
Fixes: 100e16959c ("Input: libps2 - attach ps2dev instances as serio port's drvdata")
Link: https://bugzilla.suse.com/show_bug.cgi?id=1219522
Cc: stable@vger.kernel.org
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/Z4qSHORvPn7EU2j1@google.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-02-27 04:10:45 -08:00
..
alps.c Input: alps - fix compatibility with -funsigned-char 2023-03-19 23:07:04 -07:00
alps.h Input: psmouse - drop all unneeded functions from mouse headers 2019-08-20 14:15:36 -07:00
amimouse.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
appletouch.c Input: appletouch - initialize work before device registration 2021-12-30 21:04:04 -08:00
atarimouse.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
bcm5974.c Revert "Input: bcm5974 - check endpoint type before starting traffic" 2024-08-19 06:04:31 +02:00
byd.c Input: byd - fix typo in a comment 2021-12-20 00:59:50 -08:00
byd.h Input: psmouse - drop all unneeded functions from mouse headers 2019-08-20 14:15:36 -07:00
cyapa.c Input: cyapa - add missing input core locking to suspend/resume functions 2024-06-12 11:12:40 +02:00
cyapa.h Input: cyapa - fix for losing events during device power transitions 2016-03-04 11:32:13 -08:00
cyapa_gen3.c Input: use input_device_enabled() 2020-12-02 22:10:33 -08:00
cyapa_gen5.c Input: use input_device_enabled() 2020-12-02 22:10:33 -08:00
cyapa_gen6.c Input: cyapa_gen6 - aligned "*" each line 2022-06-22 16:14:37 -07:00
cypress_ps2.c Input: cypress_ps2 - fix typo in comment 2022-05-21 12:48:39 -07:00
cypress_ps2.h Input: psmouse - drop all unneeded functions from mouse headers 2019-08-20 14:15:36 -07:00
elan_i2c.h Input: elan_i2c - reduce the resume time for controller in Whitebox 2021-09-06 22:30:34 -07:00
elan_i2c_core.c Input: elan_i2c - do not leave interrupt disabled on suspend failure 2024-08-03 08:54:00 +02:00
elan_i2c_i2c.c Input: elan_i2c - fix firmware update on newer ICs 2020-11-11 20:13:12 -08:00
elan_i2c_smbus.c Merge branch 'next' into for-linus 2020-12-14 16:27:23 -08:00
elantech.c Input: elantech - fix touchpad state on resume for Lenovo N24 2024-07-25 09:50:48 +02:00
elantech.h Input: elantech - fix protocol errors for some trackpoints in SMBus mode 2020-12-11 00:15:05 -08:00
focaltech.c Input: focaltech - use explicitly signed char type 2023-03-19 23:07:02 -07:00
focaltech.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio_mouse.c Input: gpio_mouse - fix typos in comments 2022-06-22 15:29:35 -07:00
hgpk.c Input: hgpk - fix repeated word in a comment 2022-09-08 14:06:23 -07:00
hgpk.h Input: psmouse - drop all unneeded functions from mouse headers 2019-08-20 14:15:36 -07:00
inport.c input: drop empty comment blocks 2022-09-29 16:25:42 -07:00
Kconfig input: remove pxa930_trkball driver 2023-02-01 17:23:38 +01:00
lifebook.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
lifebook.h Input: psmouse - drop all unneeded functions from mouse headers 2019-08-20 14:15:36 -07:00
logibm.c input: drop empty comment blocks 2022-09-29 16:25:42 -07:00
logips2pp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
logips2pp.h Input: psmouse - drop all unneeded functions from mouse headers 2019-08-20 14:15:36 -07:00
Makefile input: remove pxa930_trkball driver 2023-02-01 17:23:38 +01:00
maplemouse.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
navpoint.c Input: navpoint - switch to DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() 2023-01-09 20:25:23 -08:00
pc110pad.c input: drop empty comment blocks 2022-09-29 16:25:42 -07:00
psmouse-base.c Input: libps2 - introduce common interrupt handler 2023-05-18 11:40:32 -07:00
psmouse-smbus.c Revert "Input: psmouse - add delay when deactivating for SMBus mode" 2023-10-12 16:01:36 -07:00
psmouse.h Input: libps2 - attach ps2dev instances as serio port's drvdata 2023-05-18 11:40:32 -07:00
rpcmouse.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sentelic.c Input: sentelic - fix error return when fsp_reg_write fails 2020-08-06 17:33:43 -07:00
sentelic.h Input: psmouse - drop all unneeded functions from mouse headers 2019-08-20 14:15:36 -07:00
sermouse.c input: drop empty comment blocks 2022-09-29 16:25:42 -07:00
synaptics.c Input: synaptics - fix crash when enabling pass-through port 2025-02-27 04:10:45 -08:00
synaptics.h Input: synaptics - fix crash when enabling pass-through port 2025-02-27 04:10:45 -08:00
synaptics_i2c.c Input: Switch i2c drivers back to use .probe() 2023-05-17 09:59:11 -07:00
synaptics_usb.c Input: move from strlcpy with unused retval to strscpy 2022-08-18 15:44:08 -07:00
touchkit_ps2.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
touchkit_ps2.h Input: psmouse - drop all unneeded functions from mouse headers 2019-08-20 14:15:36 -07:00
trackpoint.c Input: libps2 - attach ps2dev instances as serio port's drvdata 2023-05-18 11:40:32 -07:00
trackpoint.h Input: trackpoint - add new trackpoint variant IDs 2020-09-14 12:24:46 -07:00
vmmouse.c Input: vmmouse - disable vmmouse before entering suspend mode 2022-05-18 15:02:13 -07:00
vmmouse.h Input: psmouse - drop all unneeded functions from mouse headers 2019-08-20 14:15:36 -07:00
vsxxxaa.c input: drop empty comment blocks 2022-09-29 16:25:42 -07:00