I've reported this issue upstream (https://lkml.org/lkml/2013/10/29/355), and Benjamin Tissoires has provided a patch for testing.
I've uploaded a test kernel here: http://people.canonical.com/~henrix/lp1244505/v2/ It is a 3.11.0-12.19 kernel with the patch provided by Benjamin. James: could you please give it a try? Thanks. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1244505 Title: Kernel oops - unable to handle kernel NULL pointer dereference; EIP is at input_event+0x23/0x70 Status in “linux” package in Ubuntu: Confirmed Bug description: After upgrading to Ubuntu Saucy (32 bit), I am able to reliably reproduce a crash by pressing any button on the IR remote of a Mac Mini. The system is running XBMC and using LIRC to handle the remote. The system locks up on the first button press on the remote, and prints an Oops message if I switch to a virtual terminal first. The same happens if I exit XBMC and shut down lircd first. If I boot to the 3.8.0 kernel from Raring, the problem does not occur. The dmesg output also shows non fatal intel_pipe_config_compare warnings that appear to be identical to bug 1211976, but I'm not sure if they are related. $ uname -a Linux tim-Macmini 3.11.0-12-generic #19-Ubuntu SMP Wed Oct 9 16:12:00 UTC 2013 i686 i686 i686 GNU/Linux $ cat /proc/version_signature Ubuntu 3.11.0-12.19-generic 3.11.3 The oops doesn't seem to be written to the log, so I've attached a photo for reference. I've also included the dmesg log from right before I triggered the oops. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1244505/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
