On Fri, 26 Oct 2007, Simone Malacarne wrote:
> don't know if this is the right place to post this msg. If it's not
> related sorry for the noise. I see these warnings in my dmesg related to
> hid-core.c. I'm running Ubuntu Gutsy 64bit version (Linux version
> 2.6.22-14-generic (buildd@crested) (gcc version 4.1.3 20070929
> (prerelease) (Ubuntu 4.1.2-16ubuntu2)) #1 SMP) with a Logitech bluetooth
> mouse + keyboard.
> [ 56.549723] ppdev: user-space parallel port driver
> [ 57.088868] audit(1193337315.477:3): type=1503
> operation="inode_permission" requested_mask="a" denied_mask="a"
> name="/dev/tty" pid=5062 profile="/usr/sbin/cupsd"
> [ 58.301241] Failure registering capabilities with primary security
> module.
> [ 58.548905] Bluetooth: Core ver 2.11
> [ 58.548997] NET: Registered protocol family 31
> [ 58.549000] Bluetooth: HCI device and connection manager initialized
> [ 58.549003] Bluetooth: HCI socket layer initialized
> [ 58.576780] Bluetooth: L2CAP ver 2.8
> [ 58.576784] Bluetooth: L2CAP socket layer initialized
> [ 58.712747] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
> [ 58.761656] WARNING:
> at /build/buildd/linux-source-2.6.22-2.6.22/drivers/hid/hid-core.c:777
> implement()
> [ 58.761661]
> [ 58.761662] Call Trace:
> [ 58.761680] [<ffffffff881415d8>] :hid:hid_output_report+0x218/0x280
> [ 58.761693] [<ffffffff8814b51c>] :usbhid:hid_submit_ctrl+0x7c/0x260
> [ 58.761702] [<ffffffff8814b859>] :usbhid:usbhid_submit_report
> +0x159/0x210
> [ 58.761711] [<ffffffff8814e1f6>] :usbhid:hiddev_ioctl+0x456/0xb10
> [ 58.761720] [<ffffffff80326971>] __up_read+0x21/0xb0
> [ 58.761727] [<ffffffff8043495b>] do_page_fault+0x3cb/0x870
> [ 58.761738] [<ffffffff8814dda0>] :usbhid:hiddev_ioctl+0x0/0xb10
> [ 58.761744] [<ffffffff802a6e63>] do_ioctl+0x93/0xe0
> [ 58.761750] [<ffffffff802a6f24>] vfs_ioctl+0x74/0x2d0
> [ 58.761756] [<ffffffff802a7215>] sys_ioctl+0x95/0xb0
> [ 58.761763] [<ffffffff80209e8e>] system_call+0x7e/0x83
[... several identical backtraces removed ...]
> [ 108.915332] input: Logitech diNovo Keyboard as /class/input/input16
> [ 111.469640] input: Logitech MX900 Mouse as /class/input/input17
> [ 3905.201642] input: Logitech MX900 Mouse as /class/input/input18
> [ 4140.456387] input: Logitech diNovo Keyboard as /class/input/input19
> [ 4208.661803] input: Logitech MX900 Mouse as /class/input/input20
> [ 6377.597303] input: Logitech MX900 Mouse as /class/input/input21
> [ 6634.465647] input: Logitech diNovo Keyboard as /class/input/input22
Hi,
the problem is that some userspace utility (I guess hid2hci from
bluez-utils) issues hiddev ioctl() with inappropriate out-of-bounds value.
As far as I know Logitech bluetooth keyboards are problematic, as Marcel
doesn't have any specification for them, so switching between HID and HCI
modes is reverse engineering and guessing.
--
Jiri Kosina
Hi Jiri,
> the problem is that some userspace utility (I guess hid2hci from
> bluez-utils) issues hiddev ioctl() with inappropriate out-of-bounds value.
>
> As far as I know Logitech bluetooth keyboards are problematic, as Marcel
> doesn't have any specification for them, so switching between HID and HCI
> modes is reverse engineering and guessing.
there exists a patch that might make this work again. Didn't have the
time to properly test it, but it can't make it worse.
Regards
Marcel
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