HID: hid-ntrig: fix unable to handle page fault in ntrig_report_version()

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in ntrig_report_version(), hdev parameter passed from hid_probe().
sending descriptor to /dev/uhid can make hdev->dev.parent->parent to null
if hdev->dev.parent->parent is null, usb_dev has
invalid address(0xffffffffffffff58) that hid_to_usb_dev(hdev) returned
when usb_rcvctrlpipe() use usb_dev,it trigger
page fault error for address(0xffffffffffffff58)

add null check logic to ntrig_report_version()
before calling hid_to_usb_dev()

Signed-off-by: Minjong Kim <minbell.kim@samsung.com>
Link: https://patch.msgid.link/20250813-hid-ntrig-page-fault-fix-v2-1-f98581f35106@samsung.com
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>

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Minjong Kim 2025-08-13 19:30:22 +09:00 • committed by Benjamin Tissoires

parent d3af6ca9a8

commit 185c926283

1 changed files with 3 additions and 0 deletions

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drivers/hid/hid-ntrig.c

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