Connecting Apple Magic Trackpad causes system freeze after few seconds of usage. Hardware: Broadcom based bluetooth adapter: bcm2045 Related software: bluez 4.101
Created attachment 115161 [details] dmesg output after Trackpad is connected
Not reproduced in kernel 3.10.20 (lts)
[ 2723.505055] BUG: workqueue leaked lock or atomic: kworker/u9:0/0xfffffffe/1692 last function: hci_rx_work [bluetooth] [ 2723.505062] CPU: 1 PID: 1692 Comm: kworker/u9:0 Tainted: P O 3.12.0-1-ARCH #1 [ 2723.505065] Hardware name: System manufacturer P5K/P5K, BIOS 1006 03/05/2008 Please verify you can duplicate this bug on a system where you've not loaded the proprietary Nvidia module. I suspect it'll show up the same but please confirm that
(In reply to Alan from comment #3) Hi, Alan. Just checked on the same system with nouveau instead of nvidia. Behaviour is slightly different: I don't get those error messages when moving cursor, but I do get system freezes each time I swipe touchpad with 2 fingers. Unfortunately, effect is so instant, that I'm not able to capture dmesg output. Nor I able to find any traces of those freezes in journactl after reboot.
Just wanted to add that I have the same issue (bluez 5, no nvidia hardware) and that I've seen it reported else-where: https://bbs.archlinux.org/viewtopic.php?id=173369 https://bugs.archlinux.org/task/38290 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1248287 the following commit seems to cause the problem. If I revert it it works again without kernel panic: https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=b1a1442a23776756b254b69786848a94d92445ba
This actually looks like bluetooth and magicmouse are the problem
The bug is known and there is a fix pending. It's a buffer-overflow in HID core. Waiting for Jiri's comments: http://www.spinics.net/lists/linux-bluetooth/msg41725.html