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Thomas Weißschuh 3e6a950d98 HID: input: set usage type to key on keycode remap
When a scancode is manually remapped that previously was not handled as
key, then the old usage type was incorrectly reused.

This caused issues on a "04b3:301b IBM Corp. SK-8815 Keyboard" which has
marked some of its keys with an invalid HID usage.  These invalid usage
keys are being ignored since support for USB programmable buttons was
added.

The scancodes are however remapped explicitly by the systemd hwdb to the
keycodes that are printed on the physical buttons.  During this mapping
step the existing usage is retrieved which will be found with a default
type of 0 (EV_SYN) instead of EV_KEY.

The events with the correct code but EV_SYN type are not forwarded to
userspace.

This also leads to a kernel oops when trying to print the report descriptor
via debugfs.  hid_resolv_event() tries to resolve a EV_SYN event with an
EV_KEY code which leads to an out-of-bounds access in the EV_SYN names
array.

Fixes: bcfa8d1457 ("HID: input: Add support for Programmable Buttons")
Fixes: f5854fad39 ("Input: hid-input - allow mapping unknown usages")
Reported-by: Brent Roman <brent@mbari.org>
Tested-by: Brent Roman <brent@mbari.org>
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-11-19 15:48:22 +01:00
arch Microblaze patches for 5.16-rc1 2021-11-05 08:19:56 -07:00
block for-5.16/inode-sync-2021-10-29 2021-11-01 10:25:27 -07:00
certs certs: Add support for using elliptic curve keys for signing modules 2021-08-23 19:55:42 +03:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2021-11-01 21:24:02 -07:00
Documentation Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid 2021-11-05 08:31:51 -07:00
drivers HID: input: set usage type to key on keycode remap 2021-11-19 15:48:22 +01:00
fs Driver core changes for 5.16-rc1 2021-11-04 08:32:38 -07:00
include HID: intel-ish-hid: fix module device-id handling 2021-11-11 22:45:40 +01:00
init Tracing updates for 5.16: 2021-11-01 20:05:19 -07:00
ipc ipc: remove memcg accounting for sops objects in do_semtimedop() 2021-09-14 10:22:11 -07:00
kernel IOMMU Updates for Linux v5.16: 2021-11-04 11:11:24 -07:00
lib Driver core changes for 5.16-rc1 2021-11-04 08:32:38 -07:00
LICENSES LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes" 2021-07-15 06:31:24 -06:00
mm Merge branch 'per_signal_struct_coredumps-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2021-11-03 12:15:29 -07:00
net TTY / Serial driver update for 5.16-rc1 2021-11-04 09:09:37 -07:00
samples Char/Misc driver update for 5.16-rc1 2021-11-04 08:21:47 -07:00
scripts HID: intel-ish-hid: add support for MODULE_DEVICE_TABLE() 2021-11-09 11:41:46 +01:00
security integrity-v5.16 2021-11-02 10:51:28 -07:00
sound TTY / Serial driver update for 5.16-rc1 2021-11-04 09:09:37 -07:00
tools powerpc updates for 5.16 2021-11-05 08:15:46 -07:00
usr .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
virt kvm: irqfd: avoid update unmodified entries of the routing 2021-09-30 04:27:10 -04:00
.clang-format clang-format: Update with the latest for_each macro list 2021-05-12 23:32:39 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap ARM: SoC DT updates for v5.16 2021-11-03 16:56:03 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Daniel Drake to credits 2021-09-21 08:34:58 +03:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid 2021-11-05 08:31:51 -07:00
Makefile Devicetree updates for v5.16: 2021-11-02 22:22:13 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.