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Date: Mon, 8 May 2023 08:30:07 +0200
From: Mirsad Goran Todorovac <mirsad.goran.todorovac@....hr>
To: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-input@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Benjamin Tissoires <benjamin.tissoires@...hat.com>,
Jiri Kosina <jikos@...nel.org>
Subject: [BUG] Kmemleak, possibly hiddev_connect(), in 6.3.0+ torvalds tree
commit gfc4354c6e5c2
Hi,
There seems to be a kernel memory leak in the USB keyboard driver.
The leaked memory allocs are 96 and 512 bytes.
The platform is Ubuntu 22.04 LTS on a assembled AMD Ryzen 9 with X670E
PG Lightning mobo,
and Genius SlimStar i220 GK-080012 keyboard.
(Logitech M100 HID mouse is not affected by the bug.)
BIOS is:
*-firmware
description: BIOS
vendor: American Megatrends International, LLC.
physical id: 0
version: 1.21
date: 04/26/2023
size: 64KiB
The kernel is 6.3.0-torvalds-<id>-13466-gfc4354c6e5c2.
The keyboard is recognised as Chicony:
*-usb
description: Keyboard
product: CHICONY USB Keyboard
vendor: CHICONY
physical id: 2
bus info: usb@5:2
logical name: input35
logical name: /dev/input/event4
logical name: input35::capslock
logical name: input35::numlock
logical name: input35::scrolllock
logical name: input36
logical name: /dev/input/event5
logical name: input37
logical name: /dev/input/event6
logical name: input38
logical name: /dev/input/event8
version: 2.30
capabilities: usb-2.00 usb
configuration: driver=usbhid maxpower=100mA
speed=1Mbit/s
The bug is easily reproduced by unplugging the USB keyboard, waiting
about a couple of seconds,
and then reconnect and scan for memory leaks twice.
The kmemleak log is as follows [edited privacy info]:
root@...tname:/home/username# cat /sys/kernel/debug/kmemleak
unreferenced object 0xffff8dd020037c00 (size 96):
comm "systemd-udevd", pid 435, jiffies 4294892550 (age 8909.356s)
hex dump (first 32 bytes):
5d 8e 4e b9 ff ff ff ff 00 00 00 00 00 00 00 00 ].N.............
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffffb81a74be>] __kmem_cache_alloc_node+0x22e/0x2b0
[<ffffffffb8127b6e>] kmalloc_trace+0x2e/0xa0
[<ffffffffb87543d9>] class_create+0x29/0x80
[<ffffffffb8880d24>] usb_register_dev+0x1d4/0x2e0
[<ffffffffc03d7bab>] hiddev_connect+0x11b/0x1b0 [usbhid]
[<ffffffffc03b6d4e>] hid_connect+0xde/0x580 [hid]
[<ffffffffc03b724c>] hid_hw_start+0x4c/0x70 [hid]
[<ffffffffc0388092>] hid_generic_probe+0x32/0x40 [hid_generic]
[<ffffffffc03b7450>] hid_device_probe+0x100/0x170 [hid]
[<ffffffffb8752082>] really_probe+0x1b2/0x420
[<ffffffffb875237e>] __driver_probe_device+0x7e/0x170
[<ffffffffb87524a3>] driver_probe_device+0x23/0xa0
[<ffffffffb8752748>] __driver_attach+0xe8/0x1e0
[<ffffffffb874f8ee>] bus_for_each_dev+0x7e/0xd0
[<ffffffffb8751822>] driver_attach+0x22/0x30
[<ffffffffb8750e70>] bus_add_driver+0x120/0x220
unreferenced object 0xffff8dd015653e00 (size 512):
comm "systemd-udevd", pid 435, jiffies 4294892550 (age 8909.356s)
hex dump (first 32 bytes):
00 3e 65 15 d0 8d ff ff 00 3e 65 15 d0 8d ff ff .>e......>e.....
00 00 00 00 00 00 00 00 5d 8e 4e b9 ff ff ff ff ........].N.....
backtrace:
[<ffffffffb81a74be>] __kmem_cache_alloc_node+0x22e/0x2b0
[<ffffffffb8127b6e>] kmalloc_trace+0x2e/0xa0
[<ffffffffb8754292>] class_register+0x32/0x140
[<ffffffffb87543f4>] class_create+0x44/0x80
[<ffffffffb8880d24>] usb_register_dev+0x1d4/0x2e0
[<ffffffffc03d7bab>] hiddev_connect+0x11b/0x1b0 [usbhid]
[<ffffffffc03b6d4e>] hid_connect+0xde/0x580 [hid]
[<ffffffffc03b724c>] hid_hw_start+0x4c/0x70 [hid]
[<ffffffffc0388092>] hid_generic_probe+0x32/0x40 [hid_generic]
[<ffffffffc03b7450>] hid_device_probe+0x100/0x170 [hid]
[<ffffffffb8752082>] really_probe+0x1b2/0x420
[<ffffffffb875237e>] __driver_probe_device+0x7e/0x170
[<ffffffffb87524a3>] driver_probe_device+0x23/0xa0
[<ffffffffb8752748>] __driver_attach+0xe8/0x1e0
[<ffffffffb874f8ee>] bus_for_each_dev+0x7e/0xd0
[<ffffffffb8751822>] driver_attach+0x22/0x30
unreferenced object 0xffff8dd020037f60 (size 96):
comm "kworker/0:2", pid 496256, jiffies 4295987055 (age 4531.432s)
hex dump (first 32 bytes):
5d 8e 4e b9 ff ff ff ff 00 00 00 00 00 00 00 00 ].N.............
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffffb81a74be>] __kmem_cache_alloc_node+0x22e/0x2b0
[<ffffffffb8127b6e>] kmalloc_trace+0x2e/0xa0
[<ffffffffb87543d9>] class_create+0x29/0x80
[<ffffffffb8880d24>] usb_register_dev+0x1d4/0x2e0
[<ffffffffc03d7bab>] hiddev_connect+0x11b/0x1b0 [usbhid]
[<ffffffffc03b6d4e>] hid_connect+0xde/0x580 [hid]
[<ffffffffc03b724c>] hid_hw_start+0x4c/0x70 [hid]
[<ffffffffc0388092>] hid_generic_probe+0x32/0x40 [hid_generic]
[<ffffffffc03b7450>] hid_device_probe+0x100/0x170 [hid]
[<ffffffffb8752082>] really_probe+0x1b2/0x420
[<ffffffffb875237e>] __driver_probe_device+0x7e/0x170
[<ffffffffb87524a3>] driver_probe_device+0x23/0xa0
[<ffffffffb87525c2>] __device_attach_driver+0x92/0x120
[<ffffffffb874f9da>] bus_for_each_drv+0x8a/0xe0
[<ffffffffb8752ad1>] __device_attach+0xc1/0x1f0
[<ffffffffb8752ed7>] device_initial_probe+0x17/0x20
unreferenced object 0xffff8dd07df25a00 (size 512):
comm "kworker/0:2", pid 496256, jiffies 4295987055 (age 4531.500s)
hex dump (first 32 bytes):
00 5a f2 7d d0 8d ff ff 00 5a f2 7d d0 8d ff ff .Z.}.....Z.}....
00 00 00 00 00 00 00 00 5d 8e 4e b9 ff ff ff ff ........].N.....
backtrace:
[<ffffffffb81a74be>] __kmem_cache_alloc_node+0x22e/0x2b0
[<ffffffffb8127b6e>] kmalloc_trace+0x2e/0xa0
[<ffffffffb8754292>] class_register+0x32/0x140
[<ffffffffb87543f4>] class_create+0x44/0x80
[<ffffffffb8880d24>] usb_register_dev+0x1d4/0x2e0
[<ffffffffc03d7bab>] hiddev_connect+0x11b/0x1b0 [usbhid]
[<ffffffffc03b6d4e>] hid_connect+0xde/0x580 [hid]
[<ffffffffc03b724c>] hid_hw_start+0x4c/0x70 [hid]
[<ffffffffc0388092>] hid_generic_probe+0x32/0x40 [hid_generic]
[<ffffffffc03b7450>] hid_device_probe+0x100/0x170 [hid]
[<ffffffffb8752082>] really_probe+0x1b2/0x420
[<ffffffffb875237e>] __driver_probe_device+0x7e/0x170
[<ffffffffb87524a3>] driver_probe_device+0x23/0xa0
[<ffffffffb87525c2>] __device_attach_driver+0x92/0x120
[<ffffffffb874f9da>] bus_for_each_drv+0x8a/0xe0
[<ffffffffb8752ad1>] __device_attach+0xc1/0x1f0
unreferenced object 0xffff8dd015e66e40 (size 96):
comm "kworker/1:0", pid 487844, jiffies 4296102566 (age 4069.472s)
hex dump (first 32 bytes):
5d 8e 4e b9 ff ff ff ff 00 00 00 00 00 00 00 00 ].N.............
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffffb81a74be>] __kmem_cache_alloc_node+0x22e/0x2b0
[<ffffffffb8127b6e>] kmalloc_trace+0x2e/0xa0
[<ffffffffb87543d9>] class_create+0x29/0x80
[<ffffffffb8880d24>] usb_register_dev+0x1d4/0x2e0
[<ffffffffc03d7bab>] hiddev_connect+0x11b/0x1b0 [usbhid]
[<ffffffffc03b6d4e>] hid_connect+0xde/0x580 [hid]
[<ffffffffc03b724c>] hid_hw_start+0x4c/0x70 [hid]
[<ffffffffc0388092>] hid_generic_probe+0x32/0x40 [hid_generic]
[<ffffffffc03b7450>] hid_device_probe+0x100/0x170 [hid]
[<ffffffffb8752082>] really_probe+0x1b2/0x420
[<ffffffffb875237e>] __driver_probe_device+0x7e/0x170
[<ffffffffb87524a3>] driver_probe_device+0x23/0xa0
[<ffffffffb87525c2>] __device_attach_driver+0x92/0x120
[<ffffffffb874f9da>] bus_for_each_drv+0x8a/0xe0
[<ffffffffb8752ad1>] __device_attach+0xc1/0x1f0
[<ffffffffb8752ed7>] device_initial_probe+0x17/0x20
unreferenced object 0xffff8dd0caffe800 (size 512):
comm "kworker/1:0", pid 487844, jiffies 4296102566 (age 4069.472s)
hex dump (first 32 bytes):
00 e8 ff ca d0 8d ff ff 00 e8 ff ca d0 8d ff ff ................
00 00 00 00 00 00 00 00 5d 8e 4e b9 ff ff ff ff ........].N.....
backtrace:
[<ffffffffb81a74be>] __kmem_cache_alloc_node+0x22e/0x2b0
[<ffffffffb8127b6e>] kmalloc_trace+0x2e/0xa0
[<ffffffffb8754292>] class_register+0x32/0x140
[<ffffffffb87543f4>] class_create+0x44/0x80
[<ffffffffb8880d24>] usb_register_dev+0x1d4/0x2e0
[<ffffffffc03d7bab>] hiddev_connect+0x11b/0x1b0 [usbhid]
[<ffffffffc03b6d4e>] hid_connect+0xde/0x580 [hid]
[<ffffffffc03b724c>] hid_hw_start+0x4c/0x70 [hid]
[<ffffffffc0388092>] hid_generic_probe+0x32/0x40 [hid_generic]
[<ffffffffc03b7450>] hid_device_probe+0x100/0x170 [hid]
[<ffffffffb8752082>] really_probe+0x1b2/0x420
[<ffffffffb875237e>] __driver_probe_device+0x7e/0x170
[<ffffffffb87524a3>] driver_probe_device+0x23/0xa0
[<ffffffffb87525c2>] __device_attach_driver+0x92/0x120
[<ffffffffb874f9da>] bus_for_each_drv+0x8a/0xe0
[<ffffffffb8752ad1>] __device_attach+0xc1/0x1f0
root@...tname:/home/username#
Best regards,
Mirsad
Download attachment "config-6.3.0-torvalds-13466-gfc4354c6e5c2.xz" of type "application/x-xz" (56828 bytes)
View attachment "hid-kmemleak.log" of type "text/x-log" (4728 bytes)
View attachment "lshw.txt" of type "text/plain" (58238 bytes)
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