Okay, I may be able to reliably reproduce this by rapidly turning on and off the kill switch while moving the mouse. I just had it happen again and now my mouse doesn't work at all. In the process I learned that the kernel somehow gracefully fails from null pointer dereference now.
[849133.198340] iwlagn 0000:02:00.0: RF_KILL bit toggled to disable radio. [849133.306905] usb 1-1.4: USB disconnect, device number 30 [849133.307090] btusb_intr_complete: hci0 urb ffff88009f94f300 failed to resubmit (19) [849133.307269] btusb_bulk_complete: hci0 urb ffff88009f94f9c0 failed to resubmit (19) [849133.307276] btusb_bulk_complete: hci0 urb ffff88012f9850c0 failed to resubmit (19) [849135.673333] iwlagn 0000:02:00.0: RF_KILL bit toggled to enable radio. [849136.064300] usb 1-1.4: new full speed USB device number 31 using ehci_hcd [849141.240485] input: VGP-BMS15 as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/bluetooth/hci0/hci0:11/input55 [849141.240785] generic-bluetooth 0005:054C:042B.002F: input,hidraw0: BLUETOOTH HID v1.29 Mouse [VGP-BMS15] on 78:DD:08:B7:3C:25 [849984.091176] iwlagn 0000:02:00.0: RF_KILL bit toggled to disable radio. [849984.147929] usb 1-1.4: USB disconnect, device number 31 [849984.148059] btusb_intr_complete: hci0 urb ffff88009fb0bf00 failed to resubmit (19) [849984.148165] btusb_bulk_complete: hci0 urb ffff88009fb0bcc0 failed to resubmit (19) [849984.148171] btusb_bulk_complete: hci0 urb ffff88009fb0bd80 failed to resubmit (19) [849984.166025] ------------[ cut here ]------------ [849984.166042] WARNING: at /build/buildd/linux-3.0.0/kernel/workqueue.c:994 __queue_work+0x306/0x320() [849984.166048] Hardware name: 514328U [849984.166052] Modules linked in: msr btrfs libcrc32c ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs xfs reiserfs serpent usb_storage uas cdc_acm ppp_deflate zlib_deflate bsd_comp ppp_async crc_ccitt hidp hid joydev bnep rfcomm parport_pc ppdev arc4 snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_intel snd_hda_codec thinkpad_acpi snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event btusb snd_seq bluetooth iwlagn snd_timer snd_seq_device mac80211 psmouse cfg80211 serio_raw snd intel_ips soundcore snd_page_alloc mei(C) nvram tpm_tis binfmt_misc lp parport dm_crypt wmi e1000e i915 ahci drm_kms_helper libahci drm i2c_algo_bit video [849984.166172] Pid: 14877, comm: khidpd_054c042b Tainted: G C 3.0.0-12-generic #20-Ubuntu [849984.166176] Call Trace: [849984.166187] [<ffffffff8105e83f>] warn_slowpath_common+0x7f/0xc0 [849984.166194] [<ffffffff8105e89a>] warn_slowpath_null+0x1a/0x20 [849984.166201] [<ffffffff8107a256>] __queue_work+0x306/0x320 [849984.166209] [<ffffffff81186785>] ? mntput_no_expire+0xa5/0xf0 [849984.166215] [<ffffffff8107a2d5>] queue_work_on+0x25/0x30 [849984.166221] [<ffffffff8107a31f>] queue_work+0x1f/0x30 [849984.166241] [<ffffffffa02c97e3>] hci_conn_del_sysfs+0x23/0x30 [bluetooth] [849984.166256] [<ffffffffa02bcac5>] hci_conn_put_device+0x25/0x30 [bluetooth] [849984.166266] [<ffffffffa03980d6>] hidp_session+0x376/0x4a0 [hidp] [849984.166274] [<ffffffff810572e0>] ? try_to_wake_up+0x200/0x200 [849984.166282] [<ffffffff810572e0>] ? try_to_wake_up+0x200/0x200 [849984.166292] [<ffffffffa0397d60>] ? hidp_recv_ctrl_frame+0xf0/0xf0 [hidp] [849984.166302] [<ffffffff8108120c>] kthread+0x8c/0xa0 [849984.166312] [<ffffffff815f33e4>] kernel_thread_helper+0x4/0x10 [849984.166320] [<ffffffff81081180>] ? flush_kthread_worker+0xa0/0xa0 [849984.166328] [<ffffffff815f33e0>] ? gs_change+0x13/0x13 [849984.166333] ---[ end trace 664b069d306a7db9 ]--- [849988.013232] iwlagn 0000:02:00.0: RF_KILL bit toggled to enable radio. [849988.440307] usb 1-1.4: new full speed USB device number 32 using ehci_hcd [849989.712881] ------------[ cut here ]------------ [849989.712896] WARNING: at /build/buildd/linux-3.0.0/fs/sysfs/dir.c:455 sysfs_add_one+0xc0/0xf0() [849989.712900] Hardware name: 514328U [849989.712902] sysfs: cannot create duplicate filename '/class/bluetooth/hci0:11' [849989.712905] Modules linked in: msr btrfs libcrc32c ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs xfs reiserfs serpent usb_storage uas cdc_acm ppp_deflate zlib_deflate bsd_comp ppp_async crc_ccitt hidp hid joydev bnep rfcomm parport_pc ppdev arc4 snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_intel snd_hda_codec thinkpad_acpi snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event btusb snd_seq bluetooth iwlagn snd_timer snd_seq_device mac80211 psmouse cfg80211 serio_raw snd intel_ips soundcore snd_page_alloc mei(C) nvram tpm_tis binfmt_misc lp parport dm_crypt wmi e1000e i915 ahci drm_kms_helper libahci drm i2c_algo_bit video [849989.712992] Pid: 14324, comm: kworker/u:0 Tainted: G WC 3.0.0-12-generic #20-Ubuntu [849989.712996] Call Trace: [849989.713006] [<ffffffff8105e83f>] warn_slowpath_common+0x7f/0xc0 [849989.713011] [<ffffffff8105e936>] warn_slowpath_fmt+0x46/0x50 [849989.713017] [<ffffffff811d8690>] sysfs_add_one+0xc0/0xf0 [849989.713022] [<ffffffff811d9045>] sysfs_do_create_link+0x125/0x210 [849989.713028] [<ffffffff811d85f8>] ? sysfs_add_one+0x28/0xf0 [849989.713033] [<ffffffff811d9143>] sysfs_create_link+0x13/0x20 [849989.713043] [<ffffffff813ca399>] device_add_class_symlinks+0x89/0xe0 [849989.713048] [<ffffffff811d78d6>] ? sysfs_create_file+0x26/0x30 [849989.713054] [<ffffffff813cbcb8>] device_add+0x228/0x3e0 [849989.713059] [<ffffffff813cba6b>] ? device_private_init+0x5b/0x80 [849989.713075] [<ffffffffa02c95d0>] ? __match_tty+0x40/0x40 [bluetooth] [849989.713087] [<ffffffffa02c9633>] add_conn+0x63/0x110 [bluetooth] [849989.713099] [<ffffffffa02c95d0>] ? __match_tty+0x40/0x40 [bluetooth] [849989.713107] [<ffffffff8107c09a>] process_one_work+0x11a/0x480 [849989.713112] [<ffffffff8107cd65>] worker_thread+0x165/0x370 [849989.713117] [<ffffffff8107cc00>] ? manage_workers.isra.30+0x130/0x130 [849989.713122] [<ffffffff8108120c>] kthread+0x8c/0xa0 [849989.713130] [<ffffffff815f33e4>] kernel_thread_helper+0x4/0x10 [849989.713135] [<ffffffff81081180>] ? flush_kthread_worker+0xa0/0xa0 [849989.713140] [<ffffffff815f33e0>] ? gs_change+0x13/0x13 [849989.713143] ---[ end trace 664b069d306a7dba ]--- [849989.713179] add_conn: Failed to register connection device [849989.752934] BUG: unable to handle kernel NULL pointer dereference at 0000000000000039 [849989.756423] IP: [<ffffffff811d87f5>] sysfs_create_dir+0x35/0xc0 [849989.758220] PGD 0 [849989.759959] Oops: 0000 [#1] SMP [849989.761732] CPU 0 [849989.761748] Modules linked in: msr btrfs libcrc32c ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs xfs reiserfs serpent usb_storage uas cdc_acm ppp_deflate zlib_deflate bsd_comp ppp_async crc_ccitt hidp hid joydev bnep rfcomm parport_pc ppdev arc4 snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_intel snd_hda_codec thinkpad_acpi snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event btusb snd_seq bluetooth iwlagn snd_timer snd_seq_device mac80211 psmouse cfg80211 serio_raw snd intel_ips soundcore snd_page_alloc mei(C) nvram tpm_tis binfmt_misc lp parport dm_crypt wmi e1000e i915 ahci drm_kms_helper libahci drm i2c_algo_bit video [849989.772026] [849989.774193] Pid: 1128, comm: bluetoothd Tainted: G WC 3.0.0-12-generic #20-Ubuntu LENOVO 514328U/514328U [849989.776458] RIP: 0010:[<ffffffff811d87f5>] [<ffffffff811d87f5>] sysfs_create_dir+0x35/0xc0 [849989.778714] RSP: 0018:ffff88012d621ab8 EFLAGS: 00010246 [849989.780936] RAX: ffff8801313621b0 RBX: ffff880084401898 RCX: ffff8800844018a0 [849989.783189] RDX: ffff880058bb4c28 RSI: 0000000000000000 RDI: ffff880084401898 [849989.785458] RBP: ffff88012d621ae8 R08: 0000000000000000 R09: ffff88012f089540 [849989.787713] R10: 0000000000000000 R11: ffffc90000002000 R12: 0000000000000000 [849989.789971] R13: 0000000000000000 R14: ffff880084401ad8 R15: 00000000ffffffea [849989.792215] FS: 00007ff5f25e6740(0000) GS:ffff880137c00000(0000) knlGS:0000000000000000 [849989.794446] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [849989.796697] CR2: 0000000000000039 CR3: 000000012f76f000 CR4: 00000000000006f0 [849989.798977] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [849989.801274] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [849989.803580] Process bluetoothd (pid: 1128, threadinfo ffff88012d620000, task ffff88012e1c4560) [849989.805921] Stack: [849989.808246] ffff88012d621ad8 ffff88013701d138 ffff88012d621ae8 ffff880084401898 [849989.810626] ffff8801313621b0 0000000000000000 ffff88012d621b28 ffffffff812e9d01 [849989.812997] ffff88012d621b38 ffff880084401898 ffff8801313621b0 0000000000000000 [849989.815358] Call Trace: [849989.817707] [<ffffffff812e9d01>] kobject_add_internal+0xb1/0x200 [849989.820108] [<ffffffff812ea1c7>] kobject_add+0x67/0xc0 [849989.822479] [<ffffffff813cbb8d>] device_add+0xfd/0x3e0 [849989.824839] [<ffffffffa0379d12>] hid_add_device+0x82/0x110 [hid] [849989.827197] [<ffffffffa0398ffb>] hidp_add_connection+0x34b/0x5b0 [hidp] [849989.829563] [<ffffffff81081cb0>] ? add_wait_queue+0x60/0x60 [849989.831924] [<ffffffffa0399801>] hidp_sock_ioctl+0x241/0x2d0 [hidp] [849989.834298] [<ffffffff81284086>] ? security_sk_alloc+0x16/0x20 [849989.836676] [<ffffffff814c66c3>] ? sk_prot_alloc+0x83/0x210 [849989.839064] [<ffffffff81153e9c>] ? kmem_cache_alloc_trace+0x10c/0x140 [849989.841474] [<ffffffff812b696c>] ? apparmor_file_alloc_security+0x2c/0x60 [849989.843903] [<ffffffff814c0110>] sock_do_ioctl+0x30/0x70 [849989.846340] [<ffffffff814c1199>] sock_ioctl+0x79/0x2f0 [849989.848769] [<ffffffff8117939a>] do_vfs_ioctl+0x8a/0x340 [849989.851198] [<ffffffff811796e1>] sys_ioctl+0x91/0xa0 [849989.853627] [<ffffffff814c3480>] ? sys_socket+0x40/0x70 [849989.856062] [<ffffffff815f22c2>] system_call_fastpath+0x16/0x1b [849989.858499] Code: 83 ec 18 66 66 66 66 90 48 85 ff 48 89 fb 0f 84 98 00 00 00 48 8b 47 18 49 c7 c4 20 8e a4 81 48 85 c0 74 04 4c 8b 60 30 45 31 ed [849989.858671] 80 7c 24 39 00 75 5b 48 89 df e8 8b 1f 11 00 48 85 c0 74 66 [849989.863836] RIP [<ffffffff811d87f5>] sysfs_create_dir+0x35/0xc0 [849989.866494] RSP <ffff88012d621ab8> [849989.869150] CR2: 0000000000000039 [849989.939122] ---[ end trace 664b069d306a7dbb ]--- -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/888828 Title: sysfs: cannot create duplicate filename '/class/bluetooth/hci0:1 2' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/888828/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
