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[Bug 1218004] Re: Apple Wireless Trackpad causes kernel oops

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Brian Murray <brian@xxxxxxxxxx>
Date: Wed, 28 Aug 2013 19:46:53 -0000
Reply-to: Bug 1218004 <1218004@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Running that kernel I received a warning and then an Oops.

Aug 28 11:32:58 impulse kernel: [  610.766544] ------------[ cut here ]------------
Aug 28 11:32:58 impulse kernel: [  610.766554] WARNING: CPU: 1 PID: 3487 at /home/apw/COD/linux/include/linux/kref.h:47 kobject_get+0x42/0x50()
Aug 28 11:32:58 impulse kernel: [  610.766555] Modules linked in: rpcsec_gss_krb5 nfsv4 nfsv3 hid_magicmouse hidp xt_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp ip6table_filter ip6_tables iptable_filter ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables bridge stp llc autofs4 dm_crypt snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd eeepc_wmi asus_wmi parport_pc sparse_keymap ppdev rfcomm bnep microcode psmouse serio_raw snd_hda_codec_realtek btusb snd_seq_midi joydev bluetooth snd_seq_midi_event snd_rawmidi snd_hda_intel snd_hda_codec snd_hwdep snd_pcm lpc_ich snd_seq snd_page_alloc snd_seq_device snd_timer snd dm_snapshot soundcore mei_me mei lp parport mac_hid nfsd auth_rpcgss nfs_acl nfs lockd sunrpc fscache ext2 btrfs xor zlib_deflate raid6_pq libcrc32c hid_microsoft usb_storage hid_gen
Aug 28 11:32:58 impulse kernel: eric usbhid hid nouveau mxm_wmi i2c_algo_bit ttm drm_kms_helper ahci r8169 libahci drm mii video wmi
Aug 28 11:32:58 impulse kernel: [  610.766625] CPU: 1 PID: 3487 Comm: gnome-control-c Not tainted 3.11.0-031100rc4-generic #201308041735
Aug 28 11:32:58 impulse kernel: [  610.766626] Hardware name: System manufacturer System Product Name/P8Z77-V LX, BIOS 1106 07/27/2012
Aug 28 11:32:58 impulse kernel: [  610.766628]  000000000000002f ffff8803e0201ca8 ffffffff8171e4eb 0000000000000007
Aug 28 11:32:58 impulse kernel: [  610.766631]  0000000000000000 ffff8803e0201ce8 ffffffff8106532c ffff88040e001700
Aug 28 11:32:58 impulse kernel: [  610.766633]  ffff880404d85800 ffff8804060c0b40 0000000000000282 ffff88040626e8a0
Aug 28 11:32:58 impulse kernel: [  610.766636] Call Trace:
Aug 28 11:32:58 impulse kernel: [  610.766641]  [<ffffffff8171e4eb>] dump_stack+0x46/0x58
Aug 28 11:32:58 impulse kernel: [  610.766645]  [<ffffffff8106532c>] warn_slowpath_common+0x8c/0xc0
Aug 28 11:32:58 impulse kernel: [  610.766648]  [<ffffffff8106537a>] warn_slowpath_null+0x1a/0x20
Aug 28 11:32:58 impulse kernel: [  610.766651]  [<ffffffff81368c62>] kobject_get+0x42/0x50
Aug 28 11:32:58 impulse kernel: [  610.766656]  [<ffffffff8160d567>] ? __alloc_skb+0x87/0x2a0
Aug 28 11:32:58 impulse kernel: [  610.766659]  [<ffffffff81482139>] get_device+0x19/0x20
Aug 28 11:32:58 impulse kernel: [  610.766662]  [<ffffffff8152b172>] usb_get_dev+0x22/0x30
Aug 28 11:32:58 impulse kernel: [  610.766665]  [<ffffffff815369e0>] usb_hcd_unlink_urb+0x40/0xf0
Aug 28 11:32:58 impulse kernel: [  610.766668]  [<ffffffff815379af>] usb_kill_urb.part.5+0x1f/0xa0
Aug 28 11:32:58 impulse kernel: [  610.766672]  [<ffffffff81199221>] ? kmem_cache_free+0x121/0x180
Aug 28 11:32:58 impulse kernel: [  610.766687]  [<ffffffffa051dd22>] ? hci_dev_do_close+0x182/0x430 [bluetooth]
Aug 28 11:32:58 impulse kernel: [  610.766689]  [<ffffffff81537a61>] usb_kill_urb+0x31/0x40
Aug 28 11:32:58 impulse kernel: [  610.766692]  [<ffffffff81538181>] usb_kill_anchored_urbs+0x51/0x80
Aug 28 11:32:58 impulse kernel: [  610.766697]  [<ffffffffa04fa24d>] btusb_close+0x6d/0xe0 [btusb]
Aug 28 11:32:58 impulse kernel: [  610.766706]  [<ffffffffa051dd36>] hci_dev_do_close+0x196/0x430 [bluetooth]
Aug 28 11:32:58 impulse kernel: [  610.766716]  [<ffffffffa051e1ef>] hci_rfkill_set_block+0x2f/0x60 [bluetooth]
Aug 28 11:32:58 impulse kernel: [  610.766720]  [<ffffffff817009b1>] rfkill_set_block+0x91/0x140
Aug 28 11:32:58 impulse kernel: [  610.766723]  [<ffffffff81700b43>] rfkill_fop_write+0xe3/0x160
Aug 28 11:32:58 impulse kernel: [  610.766726]  [<ffffffff811b224e>] vfs_write+0xce/0x200
Aug 28 11:32:58 impulse kernel: [  610.766729]  [<ffffffff811b2752>] SyS_write+0x52/0xa0
Aug 28 11:32:58 impulse kernel: [  610.766732]  [<ffffffff817331af>] tracesys+0xe1/0xe6
Aug 28 11:32:58 impulse kernel: [  610.766734] ---[ end trace 91e07bfeb35c827c ]---
Aug 28 11:32:58 impulse kernel: [  610.766741] BUG: unable to handle kernel NULL pointer dereference at 0000000000000138
Aug 28 11:32:58 impulse kernel: [  610.766755] IP: [<ffffffff81534e6f>] usb_rh_urb_dequeue+0x6f/0x110
Aug 28 11:32:58 impulse kernel: [  610.766761] PGD 0 
Aug 28 11:32:58 impulse kernel: [  610.766765] Oops: 0000 [#1] SMP 
Aug 28 11:32:58 impulse kernel: [  610.766770] Modules linked in: rpcsec_gss_krb5 nfsv4 nfsv3 hid_magicmouse hidp xt_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp ip6table_filter ip6_tables iptable_filter ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables bridge stp llc autofs4 dm_crypt snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd eeepc_wmi asus_wmi parport_pc sparse_keymap ppdev rfcomm bnep microcode psmouse serio_raw snd_hda_codec_realtek btusb snd_seq_midi joydev bluetooth snd_seq_midi_event snd_rawmidi snd_hda_intel snd_hda_codec snd_hwdep snd_pcm lpc_ich snd_seq snd_page_alloc snd_seq_device snd_timer snd dm_snapshot soundcore mei_me mei lp parport mac_hid nfsd auth_rpcgss nfs_acl nfs lockd sunrpc fscache ext2 btrfs xor zlib_deflate raid6_pq libcrc32c hid_microsoft usb_storage hid_gen
Aug 28 11:32:58 impulse kernel: eric usbhid hid nouveau mxm_wmi i2c_algo_bit ttm drm_kms_helper ahci r8169 libahci drm mii video wmi
Aug 28 11:32:58 impulse kernel: [  610.766908] CPU: 1 PID: 3487 Comm: gnome-control-c Tainted: G        W    3.11.0-031100rc4-generic #201308041735
Aug 28 11:32:58 impulse kernel: [  610.766914] Hardware name: System manufacturer System Product Name/P8Z77-V LX, BIOS 1106 07/27/2012
Aug 28 11:32:58 impulse kernel: [  610.766919] task: ffff8803df294650 ti: ffff8803e0200000 task.ti: ffff8803e0200000
Aug 28 11:32:58 impulse kernel: [  610.766924] RIP: 0010:[<ffffffff81534e6f>]  [<ffffffff81534e6f>] usb_rh_urb_dequeue+0x6f/0x110
Aug 28 11:32:58 impulse kernel: [  610.766932] RSP: 0018:ffff8803e0201cf8  EFLAGS: 00010002
Aug 28 11:32:58 impulse kernel: [  610.766936] RAX: 0000000000000000 RBX: ffff8804060c0b40 RCX: ffff8804060c0490
Aug 28 11:32:58 impulse kernel: [  610.766943] RDX: ffff8804060c0b60 RSI: ffff8804060c0480 RDI: ffffffff81fbede8
Aug 28 11:32:58 impulse kernel: [  610.766948] RBP: ffff8803e0201d38 R08: 000000000000000a R09: 0000000000000000
Aug 28 11:32:58 impulse kernel: [  610.766953] R10: 0000000000000412 R11: 0000000000000411 R12: 0000000000000000
Aug 28 11:32:58 impulse kernel: [  610.766957] R13: 0000000000000286 R14: 0000000000000000 R15: 00000000fffffffe
Aug 28 11:32:58 impulse kernel: [  610.766963] FS:  00007f615d331980(0000) GS:ffff88041ec80000(0000) knlGS:0000000000000000
Aug 28 11:32:58 impulse kernel: [  610.766968] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Aug 28 11:32:58 impulse kernel: [  610.766972] CR2: 0000000000000138 CR3: 00000003dfb23000 CR4: 00000000001407e0
Aug 28 11:32:58 impulse kernel: [  610.766977] Stack:
Aug 28 11:32:58 impulse kernel: [  610.766979]  ffff8803e0201d18 ffffffff81368c62 ffffffff8160d567 00000000fffffffe
Aug 28 11:32:58 impulse kernel: [  610.766987]  ffff8804060c0b40 0000000000000282 ffff88040626e8a0 00007fff660b9f40
Aug 28 11:32:58 impulse kernel: [  610.766994]  ffff8803e0201d48 ffffffff81534f35 ffff8803e0201d78 ffffffff81536a02
Aug 28 11:32:58 impulse kernel: [  610.767002] Call Trace:
Aug 28 11:32:58 impulse kernel: [  610.767007]  [<ffffffff81368c62>] ? kobject_get+0x42/0x50
Aug 28 11:32:58 impulse kernel: [  610.767013]  [<ffffffff8160d567>] ? __alloc_skb+0x87/0x2a0
Aug 28 11:32:58 impulse kernel: [  610.767018]  [<ffffffff81534f35>] unlink1+0x25/0x30
Aug 28 11:32:58 impulse kernel: [  610.767023]  [<ffffffff81536a02>] usb_hcd_unlink_urb+0x62/0xf0
Aug 28 11:32:58 impulse kernel: [  610.767028]  [<ffffffff815379af>] usb_kill_urb.part.5+0x1f/0xa0
Aug 28 11:32:58 impulse kernel: [  610.767034]  [<ffffffff81199221>] ? kmem_cache_free+0x121/0x180
Aug 28 11:32:58 impulse kernel: [  610.767046]  [<ffffffffa051dd22>] ? hci_dev_do_close+0x182/0x430 [bluetooth]
Aug 28 11:32:58 impulse kernel: [  610.767052]  [<ffffffff81537a61>] usb_kill_urb+0x31/0x40
Aug 28 11:32:58 impulse kernel: [  610.767057]  [<ffffffff81538181>] usb_kill_anchored_urbs+0x51/0x80
Aug 28 11:32:58 impulse kernel: [  610.767065]  [<ffffffffa04fa24d>] btusb_close+0x6d/0xe0 [btusb]
Aug 28 11:32:58 impulse kernel: [  610.767079]  [<ffffffffa051dd36>] hci_dev_do_close+0x196/0x430 [bluetooth]
Aug 28 11:32:58 impulse kernel: [  610.767091]  [<ffffffffa051e1ef>] hci_rfkill_set_block+0x2f/0x60 [bluetooth]
Aug 28 11:32:58 impulse kernel: [  610.767098]  [<ffffffff817009b1>] rfkill_set_block+0x91/0x140
Aug 28 11:32:58 impulse kernel: [  610.767104]  [<ffffffff81700b43>] rfkill_fop_write+0xe3/0x160
Aug 28 11:32:58 impulse kernel: [  610.767110]  [<ffffffff811b224e>] vfs_write+0xce/0x200
Aug 28 11:32:58 impulse kernel: [  610.767115]  [<ffffffff811b2752>] SyS_write+0x52/0xa0
Aug 28 11:32:58 impulse kernel: [  610.767120]  [<ffffffff817331af>] tracesys+0xe1/0xe6
Aug 28 11:32:58 impulse kernel: [  610.767124] Code: 6b 0f 1f 00 48 8b 00 48 39 c8 74 60 48 39 d0 75 f3 8b 43 18 41 bc f0 ff ff ff 85 c0 75 23 44 89 7b 18 45 31 e4 f6 46 02 0f 74 16 <41> f6 86 38 01 00 00 08 74 44 45 31 e4 49 39 9e f8 00 00 00 74 
Aug 28 11:32:58 impulse kernel: [  610.767186] RIP  [<ffffffff81534e6f>] usb_rh_urb_dequeue+0x6f/0x110
Aug 28 11:32:58 impulse kernel: [  610.767192]  RSP <ffff8803e0201cf8>
Aug 28 11:32:58 impulse kernel: [  610.767195] CR2: 0000000000000138
Aug 28 11:32:58 impulse kernel: [  610.772266] ---[ end trace 91e07bfeb35c827d ]---
Aug 28 11:33:26 impulse kernel: [  639.100626] RPC: AUTH_GSS upcall timed out.
Aug 28 11:33:26 impulse kernel: [  639.100626] Please check user daemon is running.
Aug 28 11:54:00 impulse kernel: [ 1871.610746]  (null): USB disconnect, device number 0
Aug 28 11:54:01 impulse kernel: [ 1872.414539] BUG: unable to handle kernel NULL pointer dereference at           (null)
Aug 28 11:54:01 impulse kernel: [ 1872.414548] IP: [<ffffffff81726cec>] __mutex_lock_slowpath+0xdc/0x1b0
Aug 28 11:54:01 impulse kernel: [ 1872.414555] PGD 0 
Aug 28 11:54:01 impulse kernel: [ 1872.414557] Oops: 0002 [#2] SMP 
Aug 28 11:54:01 impulse kernel: [ 1872.414560] Modules linked in: rpcsec_gss_krb5 nfsv4 nfsv3 hid_magicmouse hidp xt_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp ip6table_filter ip6_tables iptable_filter ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables bridge stp llc autofs4 dm_crypt snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd eeepc_wmi asus_wmi parport_pc sparse_keymap ppdev rfcomm bnep microcode psmouse serio_raw snd_hda_codec_realtek btusb snd_seq_midi joydev bluetooth snd_seq_midi_event snd_rawmidi snd_hda_intel snd_hda_codec snd_hwdep snd_pcm lpc_ich snd_seq snd_page_alloc snd_seq_device snd_timer snd dm_snapshot soundcore mei_me mei lp parport mac_hid nfsd auth_rpcgss nfs_acl nfs lockd sunrpc fscache ext2 btrfs xor zlib_deflate raid6_pq libcrc32c hid_microsoft usb_storage hid_gen
Aug 28 11:54:01 impulse kernel: eric usbhid hid nouveau mxm_wmi i2c_algo_bit ttm drm_kms_helper ahci r8169 libahci drm mii video wmi
Aug 28 11:54:01 impulse kernel: [ 1872.414645] CPU: 2 PID: 38 Comm: khubd Tainted: G      D W    3.11.0-031100rc4-generic #201308041735
Aug 28 11:54:01 impulse kernel: [ 1872.414649] Hardware name: System manufacturer System Product Name/P8Z77-V LX, BIOS 1106 07/27/2012
Aug 28 11:54:01 impulse kernel: [ 1872.414652] task: ffff88040805ddc0 ti: ffff880408194000 task.ti: ffff880408194000
Aug 28 11:54:01 impulse kernel: [ 1872.414655] RIP: 0010:[<ffffffff81726cec>]  [<ffffffff81726cec>] __mutex_lock_slowpath+0xdc/0x1b0
Aug 28 11:54:01 impulse kernel: [ 1872.414660] RSP: 0018:ffff880408195c18  EFLAGS: 00010246
Aug 28 11:54:01 impulse kernel: [ 1872.415468] RAX: 0000000000000000 RBX: ffff880404d858e8 RCX: 0000000000000000
Aug 28 11:54:01 impulse kernel: [ 1872.416530] RDX: ffff880408195c30 RSI: ffff880408195c48 RDI: ffff880404d858ec
Aug 28 11:54:01 impulse kernel: [ 1872.417594] RBP: ffff880408195c88 R08: 000000000000000a R09: 0000000000000000
Aug 28 11:54:01 impulse kernel: [ 1872.418679] R10: 0000000000000442 R11: 0000000000000441 R12: ffff880404d858ec
Aug 28 11:54:01 impulse kernel: [ 1872.419720] R13: ffff88040805ddc0 R14: ffff880404d85908 R15: ffff880404d858f0
Aug 28 11:54:01 impulse kernel: [ 1872.420740] FS:  0000000000000000(0000) GS:ffff88041ed00000(0000) knlGS:0000000000000000
Aug 28 11:54:01 impulse kernel: [ 1872.421716] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Aug 28 11:54:01 impulse kernel: [ 1872.422667] CR2: 0000000000000000 CR3: 0000000001c0d000 CR4: 00000000001407e0
Aug 28 11:54:01 impulse kernel: [ 1872.423583] Stack:
Aug 28 11:54:01 impulse kernel: [ 1872.424463]  ffff880404d85800 ffff880404d85888 0000000000000000 ffff880404d858f0
Aug 28 11:54:01 impulse kernel: [ 1872.425346]  0000000000000000 ffffffff81483073 0000000000000000 ffff880400000001
Aug 28 11:54:01 impulse kernel: [ 1872.426227]  ffff880408195cb8 ffff880404d858e8 ffff880404d85888 0000000000000000
Aug 28 11:54:01 impulse kernel: [ 1872.427095] Call Trace:
Aug 28 11:54:01 impulse kernel: [ 1872.427949]  [<ffffffff81483073>] ? _dev_info+0x53/0x60
Aug 28 11:54:01 impulse kernel: [ 1872.428806]  [<ffffffff8172613a>] mutex_lock+0x2a/0x41
Aug 28 11:54:01 impulse kernel: [ 1872.429659]  [<ffffffff8152feda>] usb_disconnect+0x5a/0x1d0
Aug 28 11:54:01 impulse kernel: [ 1872.430515]  [<ffffffff815378ae>] ? usb_alloc_urb+0x1e/0x50
Aug 28 11:54:01 impulse kernel: [ 1872.431363]  [<ffffffff815378ae>] ? usb_alloc_urb+0x1e/0x50
Aug 28 11:54:01 impulse kernel: [ 1872.432215]  [<ffffffff81531876>] hub_port_connect_change+0xe6/0x970
Aug 28 11:54:01 impulse kernel: [ 1872.433066]  [<ffffffff8153901a>] ? usb_control_msg+0xea/0x110
Aug 28 11:54:01 impulse kernel: [ 1872.433919]  [<ffffffff815323e0>] hub_events+0x2e0/0x810
Aug 28 11:54:01 impulse kernel: [ 1872.434789]  [<ffffffff81051079>] ? default_spin_lock_flags+0x9/0x10
Aug 28 11:54:01 impulse kernel: [ 1872.435632]  [<ffffffff81532945>] hub_thread+0x35/0x160
Aug 28 11:54:01 impulse kernel: [ 1872.436469]  [<ffffffff81089a30>] ? add_wait_queue+0x60/0x60
Aug 28 11:54:01 impulse kernel: [ 1872.437316]  [<ffffffff81532910>] ? hub_events+0x810/0x810
Aug 28 11:54:01 impulse kernel: [ 1872.438147]  [<ffffffff81088f60>] kthread+0xc0/0xd0
Aug 28 11:54:01 impulse kernel: [ 1872.438972]  [<ffffffff81088ea0>] ? flush_kthread_worker+0xb0/0xb0
Aug 28 11:54:01 impulse kernel: [ 1872.439795]  [<ffffffff81732eec>] ret_from_fork+0x7c/0xb0
Aug 28 11:54:01 impulse kernel: [ 1872.440619]  [<ffffffff81088ea0>] ? flush_kthread_worker+0xb0/0xb0
Aug 28 11:54:01 impulse kernel: [ 1872.441437] Code: 7f 9d 0f 1f 44 00 00 4c 8d 63 04 4c 8d 7b 08 4c 89 e7 e8 78 2e 00 00 48 8b 43 10 48 8d 55 a8 4c 89 7d a8 48 89 53 10 48 89 45 b0 <48> 89 10 8b 03 4c 89 6d b8 85 c0 78 0c b8 ff ff ff ff 87 03 83 
Aug 28 11:54:01 impulse kernel: [ 1872.443250] RIP  [<ffffffff81726cec>] __mutex_lock_slowpath+0xdc/0x1b0
Aug 28 11:54:01 impulse kernel: [ 1872.444132]  RSP <ffff880408195c18>
Aug 28 11:54:01 impulse kernel: [ 1872.445007] CR2: 0000000000000000
Aug 28 11:54:01 impulse kernel: [ 1872.445887] ---[ end trace 91e07bfeb35c827e ]---

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https://bugs.launchpad.net/bugs/1218004

Title:
  Apple Wireless Trackpad causes kernel oops

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  This seems to happen whenever I connect my Apple Wireless Trackpad and
  use it.  The system hardlocks and I have to force a reboot.

  ProblemType: KernelOopsDistroRelease: Ubuntu 13.10
  Package: linux-image-3.11.0-4-generic 3.11.0-4.9
  ProcVersionSignature: Ubuntu 3.11.0-4.9-generic 3.11.0-rc7
  Uname: Linux 3.11.0-4-generic x86_64
  Annotation: Your system might become unstable now and might need to be restarted.
  ApportVersion: 2.12.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  bdmurray   2546 F.... pulseaudio
   /dev/snd/controlC0:  bdmurray   2546 F.... pulseaudio
  Date: Wed Aug 28 10:16:41 2013
  EcryptfsInUse: Yes
  Failure: oops
  HibernationDevice: RESUME=UUID=24b89185-eb5d-476c-ba6d-d71b78071334
  InstallationDate: Installed on 2013-01-16 (224 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130116)
  MachineType: System manufacturer System Product Name
  MarkForUpload: True
  OopsText:

  ProcFB: 0 nouveaufb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-4-generic root=/dev/mapper/ubuntu--vg-root ro crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7
  RelatedPackageVersions: kerneloops-daemon 0.12+git20090217-3ubuntu3
  RfKill:
   0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: noSourcePackage: linux
  UpgradeStatus: Upgraded to saucy on 2013-07-15 (43 days ago)
  dmi.bios.date: 07/27/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1106
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: P8Z77-V LX
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1106:bd07/27/2012:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnP8Z77-VLX:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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References

[Bug 1218004] [NEW] Apple Wireless Trackpad causes kernel oops
From: Brian Murray, 2013-08-28