<feed xmlns='http://www.w3.org/2005/Atom'>
<title>user/sven/linux.git/drivers/hid, branch v6.6.7</title>
<subtitle>Linux Kernel
</subtitle>
<id>https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v6.6.7</id>
<link rel='self' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v6.6.7'/>
<link rel='alternate' type='text/html' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/'/>
<updated>2023-12-03T06:33:04Z</updated>
<entry>
<title>HID: fix HID device resource race between HID core and debugging support</title>
<updated>2023-12-03T06:33:04Z</updated>
<author>
<name>Charles Yi</name>
<email>be286@163.com</email>
</author>
<published>2023-10-31T04:32:39Z</published>
<link rel='alternate' type='text/html' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/commit/?id=6642322aa83975e37799d6c60c2155d12f876be1'/>
<id>urn:sha1:6642322aa83975e37799d6c60c2155d12f876be1</id>
<content type='text'>
[ Upstream commit fc43e9c857b7aa55efba9398419b14d9e35dcc7d ]

hid_debug_events_release releases resources bound to the HID device instance.
hid_device_release releases the underlying HID device instance potentially
before hid_debug_events_release has completed releasing debug resources bound
to the same HID device instance.

Reference count to prevent the HID device instance from being torn down
preemptively when HID debugging support is used. When count reaches zero,
release core resources of HID device instance using hiddev_free.

The crash:

[  120.728477][ T4396] kernel BUG at lib/list_debug.c:53!
[  120.728505][ T4396] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[  120.739806][ T4396] Modules linked in: bcmdhd dhd_static_buf 8822cu pcie_mhi r8168
[  120.747386][ T4396] CPU: 1 PID: 4396 Comm: hidt_bridge Not tainted 5.10.110 #257
[  120.754771][ T4396] Hardware name: Rockchip RK3588 EVB4 LP4 V10 Board (DT)
[  120.761643][ T4396] pstate: 60400089 (nZCv daIf +PAN -UAO -TCO BTYPE=--)
[  120.768338][ T4396] pc : __list_del_entry_valid+0x98/0xac
[  120.773730][ T4396] lr : __list_del_entry_valid+0x98/0xac
[  120.779120][ T4396] sp : ffffffc01e62bb60
[  120.783126][ T4396] x29: ffffffc01e62bb60 x28: ffffff818ce3a200
[  120.789126][ T4396] x27: 0000000000000009 x26: 0000000000980000
[  120.795126][ T4396] x25: ffffffc012431000 x24: ffffff802c6d4e00
[  120.801125][ T4396] x23: ffffff8005c66f00 x22: ffffffc01183b5b8
[  120.807125][ T4396] x21: ffffff819df2f100 x20: 0000000000000000
[  120.813124][ T4396] x19: ffffff802c3f0700 x18: ffffffc01d2cd058
[  120.819124][ T4396] x17: 0000000000000000 x16: 0000000000000000
[  120.825124][ T4396] x15: 0000000000000004 x14: 0000000000003fff
[  120.831123][ T4396] x13: ffffffc012085588 x12: 0000000000000003
[  120.837123][ T4396] x11: 00000000ffffbfff x10: 0000000000000003
[  120.843123][ T4396] x9 : 455103d46b329300 x8 : 455103d46b329300
[  120.849124][ T4396] x7 : 74707572726f6320 x6 : ffffffc0124b8cb5
[  120.855124][ T4396] x5 : ffffffffffffffff x4 : 0000000000000000
[  120.861123][ T4396] x3 : ffffffc011cf4f90 x2 : ffffff81fee7b948
[  120.867122][ T4396] x1 : ffffffc011cf4f90 x0 : 0000000000000054
[  120.873122][ T4396] Call trace:
[  120.876259][ T4396]  __list_del_entry_valid+0x98/0xac
[  120.881304][ T4396]  hid_debug_events_release+0x48/0x12c
[  120.886617][ T4396]  full_proxy_release+0x50/0xbc
[  120.891323][ T4396]  __fput+0xdc/0x238
[  120.895075][ T4396]  ____fput+0x14/0x24
[  120.898911][ T4396]  task_work_run+0x90/0x148
[  120.903268][ T4396]  do_exit+0x1bc/0x8a4
[  120.907193][ T4396]  do_group_exit+0x8c/0xa4
[  120.911458][ T4396]  get_signal+0x468/0x744
[  120.915643][ T4396]  do_signal+0x84/0x280
[  120.919650][ T4396]  do_notify_resume+0xd0/0x218
[  120.924262][ T4396]  work_pending+0xc/0x3f0

[ Rahul Rameshbabu &lt;sergeantsagara@protonmail.com&gt;: rework changelog ]
Fixes: cd667ce24796 ("HID: use debugfs for events/reports dumping")
Signed-off-by: Charles Yi &lt;be286@163.com&gt;
Signed-off-by: Jiri Kosina &lt;jkosina@suse.cz&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
</entry>
<entry>
<title>Revert "HID: logitech-dj: Add support for a new lightspeed receiver iteration"</title>
<updated>2023-11-28T17:20:15Z</updated>
<author>
<name>Jiri Kosina</name>
<email>jkosina@suse.cz</email>
</author>
<published>2023-11-21T13:38:11Z</published>
<link rel='alternate' type='text/html' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/commit/?id=a302879747f8f5bf6ff578acf877f310e0cd3f2f'/>
<id>urn:sha1:a302879747f8f5bf6ff578acf877f310e0cd3f2f</id>
<content type='text'>
commit 5b4ffb176d7979ac66b349addf3f7de433335e00 upstream.

This reverts commit 9d1bd9346241cd6963b58da7ffb7ed303285f684.

Multiple people reported misbehaving devices and reverting this commit fixes
the problem for them. As soon as the original commit author starts reacting
again, we can try to figure out why he hasn't seen the issues (mismatching
report descriptors?), but for the time being, fix for 6.7 by reverting.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=218172
Link: https://bugzilla.kernel.org/show_bug.cgi?id=218094

Cc: &lt;stable@vger.kernel.org&gt;
Signed-off-by: Jiri Kosina &lt;jkosina@suse.cz&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
</entry>
<entry>
<title>hid: lenovo: Resend all settings on reset_resume for compact keyboards</title>
<updated>2023-11-28T17:20:04Z</updated>
<author>
<name>Jamie Lentin</name>
<email>jm@lentin.co.uk</email>
</author>
<published>2023-10-02T15:09:14Z</published>
<link rel='alternate' type='text/html' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/commit/?id=465b557215664536cd20001872dade2cc4ae2d6a'/>
<id>urn:sha1:465b557215664536cd20001872dade2cc4ae2d6a</id>
<content type='text'>
commit 2f2bd7cbd1d1548137b351040dc4e037d18cdfdc upstream.

The USB Compact Keyboard variant requires a reset_resume function to
restore keyboard configuration after a suspend in some situations. Move
configuration normally done on probe to lenovo_features_set_cptkbd(), then
recycle this for use on reset_resume.

Without, the keyboard and driver would end up in an inconsistent state,
breaking middle-button scrolling amongst other problems, and twiddling
sysfs values wouldn't help as the middle-button mode won't be set until
the driver is reloaded.

Tested on a USB and Bluetooth Thinkpad Compact Keyboard.

CC: stable@vger.kernel.org
Fixes: 94eefa271323 ("HID: lenovo: Use native middle-button mode for compact keyboards")
Signed-off-by: Jamie Lentin &lt;jm@lentin.co.uk&gt;
Signed-off-by: Martin Kepplinger &lt;martink@posteo.de&gt;
Link: https://lore.kernel.org/r/20231002150914.22101-1-martink@posteo.de
Signed-off-by: Benjamin Tissoires &lt;bentiss@kernel.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
</entry>
<entry>
<title>HID: Add quirk for Dell Pro Wireless Keyboard and Mouse KM5221W</title>
<updated>2023-11-28T17:19:44Z</updated>
<author>
<name>Jiri Kosina</name>
<email>jkosina@suse.cz</email>
</author>
<published>2023-10-27T13:32:09Z</published>
<link rel='alternate' type='text/html' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/commit/?id=802785faf1e72ba8a063cc1a8a67c77a9c67f3db'/>
<id>urn:sha1:802785faf1e72ba8a063cc1a8a67c77a9c67f3db</id>
<content type='text'>
[ Upstream commit 62cc9c3cb3ec1bf31cc116146185ed97b450836a ]

This device needs ALWAYS_POLL quirk, otherwise it keeps reconnecting
indefinitely.

Reported-by: Robert Ayrapetyan &lt;robert.ayrapetyan@gmail.com&gt;
Signed-off-by: Jiri Kosina &lt;jkosina@suse.cz&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
</entry>
<entry>
<title>HID: lenovo: Detect quirk-free fw on cptkbd and stop applying workaround</title>
<updated>2023-11-28T17:19:43Z</updated>
<author>
<name>Mikhail Khvainitski</name>
<email>me@khvoinitsky.org</email>
</author>
<published>2023-09-23T22:58:30Z</published>
<link rel='alternate' type='text/html' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/commit/?id=69f2af4db703f3332ba5a96f6eec3f3975dc3570'/>
<id>urn:sha1:69f2af4db703f3332ba5a96f6eec3f3975dc3570</id>
<content type='text'>
[ Upstream commit 46a0a2c96f0f47628190f122c2e3d879e590bcbe ]

Built-in firmware of cptkbd handles scrolling by itself (when middle
button is pressed) but with issues: it does not support horizontal and
hi-res scrolling and upon middle button release it sends middle button
click even if there was a scrolling event. Commit 3cb5ff0220e3 ("HID:
lenovo: Hide middle-button press until release") workarounds last
issue but it's impossible to workaround scrolling-related issues
without firmware modification.

Likely, Dennis Schneider has reverse engineered the firmware and
provided an instruction on how to patch it [1]. However,
aforementioned workaround prevents userspace (libinput) from knowing
exact moment when middle button has been pressed down and performing
"On-Button scrolling". This commit detects correctly-behaving patched
firmware if cursor movement events has been received during middle
button being pressed and stops applying workaround for this device.

Link: https://hohlerde.org/rauch/en/elektronik/projekte/tpkbd-fix/ [1]

Signed-off-by: Mikhail Khvainitski &lt;me@khvoinitsky.org&gt;
Signed-off-by: Jiri Kosina &lt;jkosina@suse.cz&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
</entry>
<entry>
<title>HID: logitech-hidpp: Move get_wireless_feature_index() check to hidpp_connect_event()</title>
<updated>2023-11-20T10:59:22Z</updated>
<author>
<name>Hans de Goede</name>
<email>hdegoede@redhat.com</email>
</author>
<published>2023-10-10T10:20:20Z</published>
<link rel='alternate' type='text/html' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/commit/?id=efa596d885462daee42021131768a6f54b104f2e'/>
<id>urn:sha1:efa596d885462daee42021131768a6f54b104f2e</id>
<content type='text'>
[ Upstream commit ba9de350509504fb748837b71e23d7e84c83d93c ]

Calling get_wireless_feature_index() from probe() causes
the wireless_feature_index to only get set for unifying devices which
are already connected at probe() time. It does not get set for devices
which connect later.

Fix this by moving get_wireless_feature_index() to hidpp_connect_event(),
this does not make a difference for devices connected at probe() since
probe() will queue the hidpp_connect_event() for those at probe time.

This series has been tested on the following devices:
Logitech Bluetooth Laser Travel Mouse (bluetooth, HID++ 1.0)
Logitech M720 Triathlon (bluetooth, HID++ 4.5)
Logitech M720 Triathlon (unifying, HID++ 4.5)
Logitech K400 Pro (unifying, HID++ 4.1)
Logitech K270 (eQUAD nano Lite, HID++ 2.0)
Logitech M185 (eQUAD nano Lite, HID++ 4.5)
Logitech LX501 keyboard (27 Mhz, HID++ builtin scroll-wheel, HID++ 1.0)
Logitech M-RAZ105 mouse (27 Mhz, HID++ extra mouse buttons, HID++ 1.0)

And by bentiss:
Logitech Touchpad T650 (unifying)
Logitech Touchpad T651 (bluetooth)
Logitech MX Master 3B (BLE)
Logitech G403 (plain USB / Gaming receiver)

Fixes: 0da0a63b7cba ("HID: logitech-hidpp: Support WirelessDeviceStatus connect events")
Signed-off-by: Hans de Goede &lt;hdegoede@redhat.com&gt;
Link: https://lore.kernel.org/r/20231010102029.111003-4-hdegoede@redhat.com
Signed-off-by: Benjamin Tissoires &lt;bentiss@kernel.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
</entry>
<entry>
<title>HID: logitech-hidpp: Revert "Don't restart communication if not necessary"</title>
<updated>2023-11-20T10:59:22Z</updated>
<author>
<name>Hans de Goede</name>
<email>hdegoede@redhat.com</email>
</author>
<published>2023-10-10T10:20:19Z</published>
<link rel='alternate' type='text/html' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/commit/?id=f29564e94107bf3bb4cfb4bb4b57edebdf0bdec1'/>
<id>urn:sha1:f29564e94107bf3bb4cfb4bb4b57edebdf0bdec1</id>
<content type='text'>
[ Upstream commit 55bf70362ffc4ddd7c8745e2fe880edac00e4aff ]

Commit 91cf9a98ae41 ("HID: logitech-hidpp: make .probe usbhid capable")
makes hidpp_probe() first call hid_hw_start(hdev, 0) to allow IO
without connecting any hid subdrivers (hid-input, hidraw).

This is done to allow to retrieve the device's name and serial number
and store these in hdev-&gt;name and hdev-&gt;uniq.

Then later on IO was stopped and started again with hid_hw_start(hdev,
HID_CONNECT_DEFAULT) connecting hid-input and hidraw after the name
and serial number have been setup.

Commit 498ba2069035 ("HID: logitech-hidpp: Don't restart communication
if not necessary") changed the probe() code to only do the start with
a 0 connect-mask + restart later for unifying devices.

But for non unifying devices hdev-&gt;name and hdev-&gt;uniq are updated too.
So this change re-introduces the problem for which the start with
a 0 connect-mask + restart later behavior was introduced.

The previous patch in this series changes the unifying path to instead of
restarting IO only call hid_connect() later. This avoids possible issues
with restarting IO seen on non unifying devices.

Revert the change to limit the restart behavior to unifying devices to
fix hdev-&gt;name changing after userspace facing devices have already been
registered.

This series has been tested on the following devices:
Logitech Bluetooth Laser Travel Mouse (bluetooth, HID++ 1.0)
Logitech M720 Triathlon (bluetooth, HID++ 4.5)
Logitech M720 Triathlon (unifying, HID++ 4.5)
Logitech K400 Pro (unifying, HID++ 4.1)
Logitech K270 (eQUAD nano Lite, HID++ 2.0)
Logitech M185 (eQUAD nano Lite, HID++ 4.5)
Logitech LX501 keyboard (27 Mhz, HID++ builtin scroll-wheel, HID++ 1.0)
Logitech M-RAZ105 mouse (27 Mhz, HID++ extra mouse buttons, HID++ 1.0)

And by bentiss:
Logitech Touchpad T650 (unifying)
Logitech Touchpad T651 (bluetooth)
Logitech MX Master 3B (BLE)
Logitech G403 (plain USB / Gaming receiver)

Fixes: 498ba2069035 ("HID: logitech-hidpp: Don't restart communication if not necessary")
Signed-off-by: Hans de Goede &lt;hdegoede@redhat.com&gt;
Link: https://lore.kernel.org/r/20231010102029.111003-3-hdegoede@redhat.com
Signed-off-by: Benjamin Tissoires &lt;bentiss@kernel.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
</entry>
<entry>
<title>HID: logitech-hidpp: Don't restart IO, instead defer hid_connect() only</title>
<updated>2023-11-20T10:59:22Z</updated>
<author>
<name>Hans de Goede</name>
<email>hdegoede@redhat.com</email>
</author>
<published>2023-10-10T10:20:18Z</published>
<link rel='alternate' type='text/html' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/commit/?id=635caea216dce2cc5b166e1782637881178495c3'/>
<id>urn:sha1:635caea216dce2cc5b166e1782637881178495c3</id>
<content type='text'>
[ Upstream commit 11ca0322a41920df2b462d2e45b0731e47ff475b ]

Restarting IO causes 2 problems:

1. Some devices do not like IO being restarted this was addressed in
   commit 498ba2069035 ("HID: logitech-hidpp: Don't restart communication
   if not necessary"), but that change has issues of its own and needs to
   be reverted.

2. Restarting IO and specifically calling hid_device_io_stop() causes
   received packets to be missed, which may cause connect-events to
   get missed.

Restarting IO was introduced in commit 91cf9a98ae41 ("HID: logitech-hidpp:
make .probe usbhid capable") to allow to retrieve the device's name and
serial number and store these in hdev-&gt;name and hdev-&gt;uniq before
connecting any hid subdrivers (hid-input, hidraw) exporting this info
to userspace.

But this does not require restarting IO, this merely requires deferring
calling hid_connect(). Calling hid_hw_start() with a connect-mask of
0 makes it skip calling hid_connect(), so hidpp_probe() can simply call
hid_connect() later without needing to restart IO.

Remove the stop + restart of IO and instead just call hid_connect() later
to avoid the issues caused by restarting IO.

Now that IO is no longer stopped, hid_hw_close() must be called at the end
of probe() to balance the hid_hw_open() done at the beginning probe().

This series has been tested on the following devices:
Logitech Bluetooth Laser Travel Mouse (bluetooth, HID++ 1.0)
Logitech M720 Triathlon (bluetooth, HID++ 4.5)
Logitech M720 Triathlon (unifying, HID++ 4.5)
Logitech K400 Pro (unifying, HID++ 4.1)
Logitech K270 (eQUAD nano Lite, HID++ 2.0)
Logitech M185 (eQUAD nano Lite, HID++ 4.5)
Logitech LX501 keyboard (27 Mhz, HID++ builtin scroll-wheel, HID++ 1.0)
Logitech M-RAZ105 mouse (27 Mhz, HID++ extra mouse buttons, HID++ 1.0)

And by bentiss:
Logitech Touchpad T650 (unifying)
Logitech Touchpad T651 (bluetooth)
Logitech MX Master 3B (BLE)
Logitech G403 (plain USB / Gaming receiver)

Fixes: 498ba2069035 ("HID: logitech-hidpp: Don't restart communication if not necessary")
Suggested-by: Benjamin Tissoires &lt;bentiss@kernel.org&gt;
Signed-off-by: Hans de Goede &lt;hdegoede@redhat.com&gt;
Link: https://lore.kernel.org/r/20231010102029.111003-2-hdegoede@redhat.com
Signed-off-by: Benjamin Tissoires &lt;bentiss@kernel.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
</entry>
<entry>
<title>HID: uclogic: Fix a work-&gt;entry not empty bug in __queue_work()</title>
<updated>2023-11-20T10:59:22Z</updated>
<author>
<name>Jinjie Ruan</name>
<email>ruanjinjie@huawei.com</email>
</author>
<published>2023-10-09T06:42:45Z</published>
<link rel='alternate' type='text/html' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/commit/?id=8387d39ad773920637d6df789fa03f98f838125d'/>
<id>urn:sha1:8387d39ad773920637d6df789fa03f98f838125d</id>
<content type='text'>
[ Upstream commit d45f72b3c275101a620dd69881343e0dda72f877 ]

When CONFIG_HID_UCLOGIC=y and CONFIG_KUNIT_ALL_TESTS=y, launch
kernel and then the below work-&gt;entry not empty bug occurs.

In hid_test_uclogic_exec_event_hook_test(), the filter-&gt;work is not
initialized to be added to p.event_hooks-&gt;list, and then the
schedule_work() in uclogic_exec_event_hook() will call __queue_work(),
which check whether the work-&gt;entry is empty and cause the below
warning call trace.

So call INIT_WORK() with a fake work to solve the issue. After applying
this patch, the below work-&gt;entry not empty bug never occurs.

 WARNING: CPU: 0 PID: 2177 at kernel/workqueue.c:1787 __queue_work.part.0+0x780/0xad0
 Modules linked in:
 CPU: 0 PID: 2177 Comm: kunit_try_catch Tainted: G    B   W        N 6.6.0-rc2+ #30
 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
 RIP: 0010:__queue_work.part.0+0x780/0xad0
 Code: 44 24 20 0f b6 00 84 c0 74 08 3c 03 0f 8e 52 03 00 00 f6 83 00 01 00 00 02 74 6f 4c 89 ef e8 c7 d8 f1 02 f3 90 e9 e5 f8 ff ff &lt;0f&gt; 0b e9 63 fc ff ff 89 e9 49 8d 57 68 4c 89 e6 4c 89 ff 83 c9 02
 RSP: 0000:ffff888102bb7ce8 EFLAGS: 00010086
 RAX: 0000000000000000 RBX: ffff888106b8e460 RCX: ffffffff84141cc7
 RDX: 1ffff11020d71c8c RSI: 0000000000000004 RDI: ffff8881001d0118
 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed1020576f92
 R10: 0000000000000003 R11: ffff888102bb7980 R12: ffff888106b8e458
 R13: ffff888119c38800 R14: 0000000000000000 R15: ffff8881001d0100
 FS:  0000000000000000(0000) GS:ffff888119c00000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: ffff888119506000 CR3: 0000000005286001 CR4: 0000000000770ef0
 DR0: ffffffff8fdd6ce0 DR1: ffffffff8fdd6ce1 DR2: ffffffff8fdd6ce3
 DR3: ffffffff8fdd6ce5 DR6: 00000000fffe0ff0 DR7: 0000000000000600
 PKRU: 55555554
 Call Trace:
  &lt;TASK&gt;
  ? __warn+0xc9/0x260
  ? __queue_work.part.0+0x780/0xad0
  ? report_bug+0x345/0x400
  ? handle_bug+0x3c/0x70
  ? exc_invalid_op+0x14/0x40
  ? asm_exc_invalid_op+0x16/0x20
  ? _raw_spin_lock+0x87/0xe0
  ? __queue_work.part.0+0x780/0xad0
  ? __queue_work.part.0+0x249/0xad0
  queue_work_on+0x48/0x50
  uclogic_exec_event_hook.isra.0+0xf7/0x160
  hid_test_uclogic_exec_event_hook_test+0x2f1/0x5d0
  ? try_to_wake_up+0x151/0x13e0
  ? uclogic_exec_event_hook.isra.0+0x160/0x160
  ? _raw_spin_lock_irqsave+0x8d/0xe0
  ? __sched_text_end+0xa/0xa
  ? __sched_text_end+0xa/0xa
  ? migrate_enable+0x260/0x260
  ? kunit_try_run_case_cleanup+0xe0/0xe0
  kunit_generic_run_threadfn_adapter+0x4a/0x90
  ? kunit_try_catch_throw+0x80/0x80
  kthread+0x2b5/0x380
  ? kthread_complete_and_exit+0x20/0x20
  ret_from_fork+0x2d/0x70
  ? kthread_complete_and_exit+0x20/0x20
  ret_from_fork_asm+0x11/0x20
  &lt;/TASK&gt;

Fixes: a251d6576d2a ("HID: uclogic: Handle wireless device reconnection")
Signed-off-by: Jinjie Ruan &lt;ruanjinjie@huawei.com&gt;
Reviewed-by: José Expósito &lt;jose.exposito89@gmail.com&gt;
Link: https://lore.kernel.org/r/20231009064245.3573397-3-ruanjinjie@huawei.com
Signed-off-by: Benjamin Tissoires &lt;bentiss@kernel.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
</entry>
<entry>
<title>HID: uclogic: Fix user-memory-access bug in uclogic_params_ugee_v2_init_event_hooks()</title>
<updated>2023-11-20T10:59:22Z</updated>
<author>
<name>Jinjie Ruan</name>
<email>ruanjinjie@huawei.com</email>
</author>
<published>2023-10-09T06:42:44Z</published>
<link rel='alternate' type='text/html' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/commit/?id=6c8f953728d75104d994893f58801c457274335a'/>
<id>urn:sha1:6c8f953728d75104d994893f58801c457274335a</id>
<content type='text'>
[ Upstream commit 91cfe0bbaa1c434d4271eb6e1d7aaa1fe8d121f6 ]

When CONFIG_HID_UCLOGIC=y and CONFIG_KUNIT_ALL_TESTS=y, launch kernel and
then the below user-memory-access bug occurs.

In hid_test_uclogic_params_cleanup_event_hooks(),it call
uclogic_params_ugee_v2_init_event_hooks() with the first arg=NULL, so
when it calls uclogic_params_ugee_v2_has_battery(), the hid_get_drvdata()
will access hdev-&gt;dev with hdev=NULL, which will cause below
user-memory-access.

So add a fake_device with quirks member and call hid_set_drvdata()
to assign hdev-&gt;dev-&gt;driver_data which avoids the null-ptr-def bug
for drvdata-&gt;quirks in uclogic_params_ugee_v2_has_battery(). After applying
this patch, the below user-memory-access bug never occurs.

 general protection fault, probably for non-canonical address 0xdffffc0000000329: 0000 [#1] PREEMPT SMP KASAN
 KASAN: probably user-memory-access in range [0x0000000000001948-0x000000000000194f]
 CPU: 5 PID: 2189 Comm: kunit_try_catch Tainted: G    B   W        N 6.6.0-rc2+ #30
 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
 RIP: 0010:uclogic_params_ugee_v2_init_event_hooks+0x87/0x600
 Code: f3 f3 65 48 8b 14 25 28 00 00 00 48 89 54 24 60 31 d2 48 89 fa c7 44 24 30 00 00 00 00 48 c7 44 24 28 02 f8 02 01 48 c1 ea 03 &lt;80&gt; 3c 02 00 0f 85 2c 04 00 00 48 8b 9d 48 19 00 00 48 b8 00 00 00
 RSP: 0000:ffff88810679fc88 EFLAGS: 00010202
 RAX: dffffc0000000000 RBX: 0000000000000004 RCX: 0000000000000000
 RDX: 0000000000000329 RSI: ffff88810679fd88 RDI: 0000000000001948
 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1020f639f0
 R10: ffff888107b1cf87 R11: 0000000000000400 R12: 1ffff11020cf3f92
 R13: ffff88810679fd88 R14: ffff888100b97b08 R15: ffff8881030bb080
 FS:  0000000000000000(0000) GS:ffff888119e80000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 0000000000000000 CR3: 0000000005286001 CR4: 0000000000770ee0
 DR0: ffffffff8fdd6cf4 DR1: ffffffff8fdd6cf5 DR2: ffffffff8fdd6cf6
 DR3: ffffffff8fdd6cf7 DR6: 00000000fffe0ff0 DR7: 0000000000000600
 PKRU: 55555554
 Call Trace:
  &lt;TASK&gt;
  ? die_addr+0x3d/0xa0
  ? exc_general_protection+0x144/0x220
  ? asm_exc_general_protection+0x22/0x30
  ? uclogic_params_ugee_v2_init_event_hooks+0x87/0x600
  ? sched_clock_cpu+0x69/0x550
  ? uclogic_parse_ugee_v2_desc_gen_params+0x70/0x70
  ? load_balance+0x2950/0x2950
  ? rcu_trc_cmpxchg_need_qs+0x67/0xa0
  hid_test_uclogic_params_cleanup_event_hooks+0x9e/0x1a0
  ? uclogic_params_ugee_v2_init_event_hooks+0x600/0x600
  ? __switch_to+0x5cf/0xe60
  ? migrate_enable+0x260/0x260
  ? __kthread_parkme+0x83/0x150
  ? kunit_try_run_case_cleanup+0xe0/0xe0
  kunit_generic_run_threadfn_adapter+0x4a/0x90
  ? kunit_try_catch_throw+0x80/0x80
  kthread+0x2b5/0x380
  ? kthread_complete_and_exit+0x20/0x20
  ret_from_fork+0x2d/0x70
  ? kthread_complete_and_exit+0x20/0x20
  ret_from_fork_asm+0x11/0x20
  &lt;/TASK&gt;
 Modules linked in:
 Dumping ftrace buffer:
    (ftrace buffer empty)
 ---[ end trace 0000000000000000 ]---
 RIP: 0010:uclogic_params_ugee_v2_init_event_hooks+0x87/0x600
 Code: f3 f3 65 48 8b 14 25 28 00 00 00 48 89 54 24 60 31 d2 48 89 fa c7 44 24 30 00 00 00 00 48 c7 44 24 28 02 f8 02 01 48 c1 ea 03 &lt;80&gt; 3c 02 00 0f 85 2c 04 00 00 48 8b 9d 48 19 00 00 48 b8 00 00 00
 RSP: 0000:ffff88810679fc88 EFLAGS: 00010202
 RAX: dffffc0000000000 RBX: 0000000000000004 RCX: 0000000000000000
 RDX: 0000000000000329 RSI: ffff88810679fd88 RDI: 0000000000001948
 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1020f639f0
 R10: ffff888107b1cf87 R11: 0000000000000400 R12: 1ffff11020cf3f92
 R13: ffff88810679fd88 R14: ffff888100b97b08 R15: ffff8881030bb080
 FS:  0000000000000000(0000) GS:ffff888119e80000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 0000000000000000 CR3: 0000000005286001 CR4: 0000000000770ee0
 DR0: ffffffff8fdd6cf4 DR1: ffffffff8fdd6cf5 DR2: ffffffff8fdd6cf6
 DR3: ffffffff8fdd6cf7 DR6: 00000000fffe0ff0 DR7: 0000000000000600
 PKRU: 55555554
 Kernel panic - not syncing: Fatal exception
 Dumping ftrace buffer:
    (ftrace buffer empty)
 Kernel Offset: disabled
 Rebooting in 1 seconds..

Fixes: a251d6576d2a ("HID: uclogic: Handle wireless device reconnection")
Signed-off-by: Jinjie Ruan &lt;ruanjinjie@huawei.com&gt;
Reviewed-by: José Expósito &lt;jose.exposito89@gmail.com&gt;
Link: https://lore.kernel.org/r/20231009064245.3573397-2-ruanjinjie@huawei.com
Signed-off-by: Benjamin Tissoires &lt;bentiss@kernel.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
</entry>
</feed>
