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kernel_arpi/drivers/hid
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Claudia Pellegrino 25bbaa3ae1 HID: magicmouse: prevent division by 0 on scroll 
[ Upstream commit a1091118e0d6d84c2fdb94e6c397ac790bfb9dd6 ]

In hid_magicmouse, if the user has set scroll_speed to a value between
55 and 63 and scrolls seven times in quick succession, the
step_hr variable in the magicmouse_emit_touch function becomes 0.

That causes a division by zero further down in the function when
it does `step_x_hr /= step_hr`.

To reproduce, create `/etc/modprobe.d/hid_magicmouse.conf` with the
following content:

```
options hid_magicmouse scroll_acceleration=1 scroll_speed=55
```

Then reboot, connect a Magic Mouse and scroll seven times quickly.
The system will freeze for a minute, and after that `dmesg` will
confirm that a division by zero occurred.

Enforce a minimum of 1 for the variable so the high resolution
step count can never reach 0 even at maximum scroll acceleration.

Fixes: d4b9f10a0e ("HID: magicmouse: enable high-resolution scroll")

Signed-off-by: Claudia Pellegrino <linux@cpellegrino.de>
Tested-by: José Expósito <jose.exposito89@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-12-01 09:04:48 +01:00
..
amd-sfh-hid
HID: amd_sfh: Fix potential NULL pointer dereference
2021-09-27 10:00:43 +02:00
i2c-hid
Merge branch 'for-5.15/goodix' into for-linus
2021-09-01 22:01:27 +02:00
intel-ish-hid
Merge 5.14-rc5 into driver-core-next
2021-08-09 09:03:47 +02:00
surface-hid
HID: surface-hid: Allow driver matching for target ID 1 devices
2021-11-18 19:15:59 +01:00
usbhid
Merge branch 'for-5.15/core' into for-linus
2021-09-01 22:00:06 +02:00
hid-a4tech.c
HID: a4tech: use A4_2WHEEL_MOUSE_HACK_B8 for A4TECH NB-95
2021-05-05 14:29:13 +02:00
hid-accutouch.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-alps.c
Merge branch 'for-5.13/warnings' into for-linus
2021-04-29 21:47:22 +02:00
hid-apple.c
HID: apple: Fix logical maximum and usage maximum of Magic Keyboard JIS
2021-09-15 16:44:10 +02:00
hid-appleir.c
HID: appleir: Use devm_kzalloc() instead of kzalloc()
2020-03-13 17:33:11 +01:00
hid-asus.c
HID: asus: Prevent Claymore sending suspend event
2021-08-20 14:50:41 +02:00
hid-aureal.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
hid-axff.c
HID: Fix assumption that devices have inputs
2019-10-03 15:36:40 -04:00
hid-belkin.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-betopff.c
HID: betop: fix slab-out-of-bounds Write in betop_probe
2021-09-15 16:31:21 +02:00
hid-bigbenff.c
HID: hid-bigbenff: fix race condition for scheduled work during removal
2020-02-18 14:43:51 +01:00
hid-cherry.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-chicony.c
HID: chicony: Add Wireless Radio Control feature for Chicony devices
2021-01-14 13:13:24 +01:00
hid-cmedia.c
HID: cmedia: add support for HS-100B mute button
2021-07-28 11:51:07 +02:00
hid-core.c
bus: Make remove callback return void
2021-07-21 11:53:42 +02:00
hid-corsair.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-cougar.c
HID: cougar: Constify cougar_id_table
2020-08-17 11:38:49 +02:00
hid-cp2112.c
HID cp2112: fix support for multiple gpiochips
2021-03-08 14:55:31 +01:00
hid-creative-sb0540.c
HID: sb0540: add support for Creative SB0540 IR receivers
2019-09-03 16:52:04 +02:00
hid-cypress.c
HID: cypress: Support Varmilo Keyboards' media hotkeys
2020-10-23 13:23:44 +02:00
hid-debug.c
Merge branch 'for-5.14/core' into for-linus
2021-06-30 09:03:51 +02:00
hid-dr.c
HID: Fix assumption that devices have inputs
2019-10-03 15:36:40 -04:00
hid-elan.c
HID: elan: Remove elan_mute_led_get_brigtness()
2021-04-07 12:46:33 +02:00
hid-elecom.c
HID: elecom: drop stray comment
2020-11-25 17:40:23 +01:00
hid-elo.c
HID: elo: update the reference count of the usb device structure
2021-08-20 14:22:28 +02:00
hid-emsff.c
HID: Fix assumption that devices have inputs
2019-10-03 15:36:40 -04:00
hid-ezkey.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-ft260.c
HID: ft260: fix device removal due to USB disconnect
2021-07-29 12:38:32 +02:00
hid-gaff.c
HID: Fix assumption that devices have inputs
2019-10-03 15:36:40 -04:00
hid-gembird.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-generic.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-gfrm.c
HID: do not call hid_set_drvdata(hdev, NULL) in drivers
2019-08-22 17:11:58 +02:00
hid-glorious.c
HID: Add driver fixing Glorious PC Gaming Race mouse report descriptor
2020-03-18 13:36:21 +01:00
hid-google-hammer.c
HID: google: Add of_match table to Whiskers switch device.
2021-05-05 14:34:41 +02:00
hid-gt683r.c
HID: gt683r: add missing MODULE_DEVICE_TABLE
2021-05-27 15:40:34 +02:00
hid-gyration.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-holtek-kbd.c
HID: holtek: test for sanity of intfdata
2019-08-05 14:18:42 +02:00
hid-holtek-mouse.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-holtekff.c
HID: Fix assumption that devices have inputs
2019-10-03 15:36:40 -04:00
hid-hyperv.c
HID: hyperv: Use VMBUS_RING_SIZE() for ringbuffer sizes
2020-09-28 08:57:28 +00:00
hid-icade.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-ids.h
HID: multitouch: disable sticky fingers for UPERFECT Y
2021-11-25 09:48:27 +01:00
hid-input.c
HID: input: set usage type to key on keycode remap
2021-12-01 09:04:48 +01:00
hid-ite.c
HID: lg-g15 + ite: Add MODULE_AUTHOR
2021-05-05 14:39:24 +02:00
hid-jabra.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-kensington.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-keytouch.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-kye.c
HID: hid-kye: Fix incorrect function name for kye_tablet_enable()
2021-04-07 18:46:20 +02:00
hid-lcpower.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-led.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372
2019-06-05 17:37:10 +02:00
hid-lenovo.c
HID: lenovo: Add support for Thinkpad X1 Tablet Thin keyboard
2021-04-07 12:48:20 +02:00
hid-lg2ff.c
HID: Fix assumption that devices have inputs
2019-10-03 15:36:40 -04:00
hid-lg3ff.c
HID: Fix assumption that devices have inputs
2019-10-03 15:36:40 -04:00
hid-lg4ff.c
HID: Fix assumption that devices have inputs
2019-10-03 15:36:40 -04:00
hid-lg4ff.h
…
hid-lg-g15.c
HID: lg-g15 + ite: Add MODULE_AUTHOR
2021-05-05 14:39:24 +02:00
hid-lg.c
HID: logitech-dj: Handle newer quad/bt2.0 receivers in HID proxy mode
2021-03-08 11:05:50 +01:00
hid-lg.h
…
hid-lgff.c
HID: Fix assumption that devices have inputs
2019-10-03 15:36:40 -04:00
hid-logitech-dj.c
Merge branch 'for-5.14/multitouch' into for-linus
2021-06-30 09:15:15 +02:00
hid-logitech-hidpp.c
HID: logitech-hidpp: battery: provide CAPACITY property for newer devices
2021-08-20 14:32:39 +02:00
hid-macally.c
HID: macally: Constify macally_id_table
2020-08-17 11:38:49 +02:00
hid-magicmouse.c
HID: magicmouse: prevent division by 0 on scroll
2021-12-01 09:04:48 +01:00
hid-maltron.c
Support for Maltron L90 keyboard media keys
2019-01-14 20:11:01 +01:00
hid-mcp2221.c
HID: mcp2221: Fix GPIO output handling
2020-11-05 11:16:53 +01:00
hid-mf.c
HID: mf: add support for 0079:1846 Mayflash/Dragonrise USB Gamecube Adapter
2020-11-25 14:30:33 +01:00
hid-microsoft.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
2020-09-02 12:55:46 -07:00
hid-monterey.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-multitouch.c
HID: multitouch: disable sticky fingers for UPERFECT Y
2021-11-25 09:48:27 +01:00
hid-nti.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-ntrig.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-ortek.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-penmount.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-petalynx.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-picolcd_backlight.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 265
2019-06-05 17:30:28 +02:00
hid-picolcd_cir.c
media: rc: harmonize infrared durations to microseconds
2020-09-03 16:18:55 +02:00
hid-picolcd_core.c
HID: hid-picolcd_core: Remove unused variable 'ret'
2021-04-07 18:46:20 +02:00
hid-picolcd_debugfs.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 265
2019-06-05 17:30:28 +02:00
hid-picolcd_fb.c
Merge branch 'for-5.7/appleir' into for-linus
2020-04-01 12:26:12 +02:00
hid-picolcd_lcd.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 265
2019-06-05 17:30:28 +02:00
hid-picolcd_leds.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 265
2019-06-05 17:30:28 +02:00
hid-picolcd.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 265
2019-06-05 17:30:28 +02:00
hid-pl.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
hid-plantronics.c
HID: plantronics: Workaround for double volume key presses
2021-03-08 11:08:58 +01:00
hid-playstation.c
HID: playstation: add DualSense player LED support.
2021-02-18 17:41:51 +01:00
hid-primax.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282
2019-06-05 17:36:37 +02:00
hid-prodikeys.c
HID: prodikeys: make array keys static const, makes object smaller
2019-10-01 16:21:04 +02:00
hid-quirks.c
HID: thrustmaster: clean up Makefile and adapt quirks
2021-08-20 14:53:54 +02:00
hid-redragon.c
HID: redragon: fix num lock and caps lock LEDs
2018-06-25 15:23:40 +02:00
hid-retrode.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-rmi.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2020-10-23 16:16:31 -07:00
hid-roccat-arvo.c
HID: displays: convert sysfs sprintf/snprintf family to sysfs_emit
2021-02-05 10:16:45 +01:00
hid-roccat-arvo.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat-common.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat-common.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat-isku.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat-isku.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat-kone.c
Merge branch 'for-5.9/upstream-fixes' into for-linus
2020-10-15 20:41:43 +02:00
hid-roccat-kone.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat-koneplus.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat-koneplus.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat-konepure.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat-kovaplus.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat-kovaplus.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat-lua.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat-lua.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat-pyra.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat-pyra.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat-ryos.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat-savu.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat-savu.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-roccat.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-saitek.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-samsung.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-semitek.c
HID: semitek: new driver for GK6X series keyboards
2021-05-05 14:21:08 +02:00
hid-sensor-custom.c
HID: hid-sensor-custom: Process failure of sensor_hub_set_feature()
2021-05-26 12:36:46 +02:00
hid-sensor-hub.c
HID: hid-sensor-hub: Return error for hid_set_field() failure
2021-05-05 14:36:18 +02:00
hid-sjoy.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
hid-sony.c
Merge branch 'for-5.15/sony' into for-linus
2021-09-01 22:03:18 +02:00
hid-speedlink.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-steam.c
HID: steam: fixes race in handling device list.
2020-06-19 09:21:21 +02:00
hid-steelseries.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-sunplus.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-thrustmaster.c
HID: thrustmaster: Fix memory leak in thrustmaster_interrupts()
2021-08-20 14:24:57 +02:00
hid-tivo.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-tmff.c
HID: Fix assumption that devices have inputs
2019-10-03 15:36:40 -04:00
hid-topseed.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-twinhan.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 178
2019-05-30 11:29:19 -07:00
hid-u2fzero.c
HID: u2fzero: properly handle timeouts in usb_submit_urb
2021-11-18 19:16:56 +01:00
hid-uclogic-core.c
HID: uclogic: Improve support for Trust Panora
2021-01-08 14:05:48 +01:00
hid-uclogic-params.c
HID: hid-uclogic-params: Ensure function names are present and correct in kernel-doc headers
2021-04-07 18:46:20 +02:00
hid-uclogic-params.h
HID: uclogic: Support Gray-coded rotary encoders
2019-02-21 12:00:54 +01:00
hid-uclogic-rdesc.c
HID: hid-uclogic-rdesc: Kernel-doc is for functions and structs
2021-04-07 18:46:20 +02:00
hid-uclogic-rdesc.h
HID: uclogic: Add support for Ugee G5
2019-02-21 12:00:54 +01:00
hid-udraw-ps3.c
HID: udraw-ps3: Replace HTTP links with HTTPS ones
2020-07-20 12:24:41 +02:00
hid-viewsonic.c
HID: viewsonic: Support PD1011 signature pad
2019-02-21 12:00:53 +01:00
hid-vivaldi.c
HID: add vivaldi HID driver
2020-09-30 22:44:26 +02:00
hid-waltop.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-wiimote-core.c
HID: wiimote: remove h from printk format specifier
2021-01-07 10:14:58 +01:00
hid-wiimote-debug.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-wiimote-modules.c
HID: Wiimote: Treat the d-pad as an analogue stick
2020-06-19 14:17:22 +02:00
hid-wiimote.h
HID: Wiimote: Treat the d-pad as an analogue stick
2020-06-19 14:17:22 +02:00
hid-xinmo.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hid-zpff.c
HID: Fix assumption that devices have inputs
2019-10-03 15:36:40 -04:00
hid-zydacron.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
hidraw.c
HID: hidraw: Add additional hidraw input/output report ioctls.
2020-11-27 15:48:31 +01:00
Kconfig
Merge branch 'for-5.15/sony' into for-linus
2021-09-01 22:03:18 +02:00
Makefile
HID: thrustmaster: clean up Makefile and adapt quirks
2021-08-20 14:53:54 +02:00
uhid.c
HID: hidraw, uhid: Always report EPOLLOUT
2020-01-10 15:34:28 +01:00
wacom_sys.c
HID: wacom: Short-circuit processing of touch when it is disabled
2021-07-28 11:45:40 +02:00
wacom_wac.c
HID: wacom: Use "Confidence" flag to prevent reporting invalid contacts
2021-12-01 09:04:41 +01:00
wacom_wac.h
HID: wacom: Use "Confidence" flag to prevent reporting invalid contacts
2021-12-01 09:04:41 +01:00
wacom.h
HID: wacom: generic: Treat serial number and related fields as unsigned
2019-11-06 21:37:29 +01:00