[/sys/kernel/debug/usb/] . ./ohci ./ohci/0000:00:13.1 ./ohci/0000:00:13.1/registers ./ohci/0000:00:13.1/periodic ./ohci/0000:00:13.1/async ./ohci/0000:00:13.0 ./ohci/0000:00:13.0/registers ./ohci/0000:00:13.0/periodic ./ohci/0000:00:13.0/async ./ehci ./ehci/0000:00:13.2 ./ehci/0000:00:13.2/registers ./ehci/0000:00:13.2/periodic ./ehci/0000:00:13.2/bandwidth ./ehci/0000:00:13.2/async ./devices ["cat ./devices" hangs, cat goes into D=uninterruptible sleep state] [same thing happens with "lsusb"] [contents of /sys/kernel/debug/usb/ohci/0000:00:13.0] ==> async <== ==> periodic <== size = 32 ==> registers <== bus pci, device 0000:00:13.0 OHCI PCI host controller ohci_hcd OHCI 1.0, NO legacy support registers, rh state running control 0x283 RWC HCFS=operational CBSR=3 cmdstatus 0x00000 SOC=0 intrstatus 0x00000024 FNO SF intrenable 0x8000005a MIE RHSC UE RD WDH hcca frame 0x2021 fmintvl 0x27782edf FSMPS=0x2778 FI=0x2edf fmremaining 0x000013b3 FR=0x13b3 periodicstart 0x2a2f lsthresh 0x0628 hub poll timer off roothub.a 02000204 POTPGT=2 NPS NDP=4(4) roothub.b 00000000 PPCM=0000 DR=0000 roothub.status 00008000 DRWE roothub.portstatus [0] 0x00000100 PPS roothub.portstatus [1] 0x00000100 PPS roothub.portstatus [2] 0x00000100 PPS roothub.portstatus [3] 0x00000100 PPS [contents of /sys/kernel/debug/usb/ohci/0000:00:13.1] ==> async <== ==> periodic <== size = 32 0 [ 22]: ed1/ffff88004bd53050 (fs dev2 ep1in-int qlen 1 max 16 00101082) 1 [ 22]: ed1/ffff88004bd53050 2 [ 22]: ed1/ffff88004bd53050 3 [ 22]: ed1/ffff88004bd53050 4 [ 22]: ed1/ffff88004bd53050 5 [ 22]: ed1/ffff88004bd53050 6 [ 22]: ed1/ffff88004bd53050 7 [ 22]: ed1/ffff88004bd53050 8 [ 22]: ed1/ffff88004bd53050 9 [ 22]: ed1/ffff88004bd53050 10 [ 22]: ed1/ffff88004bd53050 11 [ 22]: ed1/ffff88004bd53050 12 [ 22]: ed1/ffff88004bd53050 13 [ 22]: ed1/ffff88004bd53050 14 [ 22]: ed1/ffff88004bd53050 15 [ 22]: ed1/ffff88004bd53050 16 [ 22]: ed1/ffff88004bd53050 17 [ 22]: ed1/ffff88004bd53050 18 [ 22]: ed1/ffff88004bd53050 19 [ 22]: ed1/ffff88004bd53050 20 [ 22]: ed1/ffff88004bd53050 21 [ 22]: ed1/ffff88004bd53050 22 [ 22]: ed1/ffff88004bd53050 23 [ 22]: ed1/ffff88004bd53050 24 [ 22]: ed1/ffff88004bd53050 25 [ 22]: ed1/ffff88004bd53050 26 [ 22]: ed1/ffff88004bd53050 27 [ 22]: ed1/ffff88004bd53050 28 [ 22]: ed1/ffff88004bd53050 29 [ 22]: ed1/ffff88004bd53050 30 [ 22]: ed1/ffff88004bd53050 31 [ 22]: ed1/ffff88004bd53050 ==> registers <== bus pci, device 0000:00:13.1 OHCI PCI host controller ohci_hcd OHCI 1.0, NO legacy support registers, rh state running control 0x28f RWC HCFS=operational IE PLE CBSR=3 cmdstatus 0x00002 SOC=0 CLF intrstatus 0x00000020 FNO intrenable 0x8000005e MIE RHSC UE RD SF WDH ed_periodcurrent 4bd530a0 ed_controlhead 4bd53000 hcca frame 0xea19 fmintvl 0x27782edf FSMPS=0x2778 FI=0x2edf fmremaining 0x00000c5d FR=0x0c5d periodicstart 0x2a2f lsthresh 0x0628 hub poll timer off roothub.a 02000204 POTPGT=2 NPS NDP=4(4) roothub.b 00000000 PPCM=0000 DR=0000 roothub.status 00008000 DRWE roothub.portstatus [0] 0x00000100 PPS roothub.portstatus [1] 0x00000100 PPS roothub.portstatus [2] 0x00000100 PPS roothub.portstatus [3] 0x00000100 PPS [contents of /sys/kernel/debug/usb/ehci/0000:00:13.2] ==> async <== ==> bandwidth <== HS bandwidth allocation (us per microframe) 0: 0 0 0 0 0 0 0 0 8: 0 0 0 0 0 0 0 0 16: 0 0 0 0 0 0 0 0 24: 0 0 0 0 0 0 0 0 32: 0 0 0 0 0 0 0 0 40: 0 0 0 0 0 0 0 0 48: 0 0 0 0 0 0 0 0 56: 0 0 0 0 0 0 0 0 ==> periodic <== size = 512 ==> registers <== bus pci, device 0000:00:13.2 EHCI Host Controller EHCI 1.00, rh state running ownership 00000001 SMI sts/enable 0xc0080000 structural params 0x00002408 capability params 0x0000a012 status 0008 FLR command 0010005 (park)=0 ithresh=1 period=512 RUN intrenable 37 IAA FATAL PCD ERR INT uframe 1105 port:1 status 001000 0 ACK POWER sig=se0 port:2 status 001803 0 ACK POWER sig=j CSC CONNECT port:3 status 001000 0 ACK POWER sig=se0 port:4 status 001000 0 ACK POWER sig=se0 port:5 status 001000 0 ACK POWER sig=se0 port:6 status 001000 0 ACK POWER sig=se0 port:7 status 001000 0 ACK POWER sig=se0 port:8 status 001000 0 ACK POWER sig=se0 irq normal 0 err 0 iaa 0 (lost 0) complete 0 unlink 0 [truncated dmesg] [118432.839141] [] snd_usb_ctl_msg+0xb0/0x160 [snd_usb_audio] [118432.839151] [] snd_usb_init_sample_rate+0x13d/0x2c0 [snd_usb_audio] [118432.839163] [] snd_usb_pcm_prepare+0xc7/0x3b0 [snd_usb_audio] [118432.839170] [] ? snd_pcm_post_stop+0x86/0xa0 [118432.839177] [] snd_pcm_do_prepare+0x16/0x30 [118432.839184] [] snd_pcm_action_single+0x31/0x80 [118432.839189] [] ? snd_pcm_action+0x6d/0x80 [118432.839196] [] snd_pcm_action_nonatomic+0x7e/0x90 [118432.839202] [] snd_pcm_common_ioctl1+0x60a/0xcc0 [118432.839208] [] ? handle_mm_fault+0x16f/0x800 [118432.839216] [] ? do_send_sig_info+0x5a/0x90 [118432.839222] [] snd_pcm_playback_ioctl1+0x51/0x270 [118432.839229] [] ? __do_page_fault+0x1cc/0x4c0 [118432.839236] [] snd_pcm_playback_ioctl+0x2f/0x40 [118432.839243] [] do_vfs_ioctl+0x7e/0x500 [118432.839250] [] ? __getnstimeofday+0x39/0xc0 [118432.839256] [] SyS_ioctl+0x4b/0x90 [118432.839264] [] system_call_fastpath+0x16/0x1b [118432.839271] INFO: task mplayer:2755 blocked for more than 120 seconds. [118432.839274] Not tainted 3.13.0-rc8 #2 [118432.839276] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [118432.839278] mplayer D ffff88004d01b908 0 2755 2753 0x00000000 [118432.839285] ffff880036c09d48 0000000000000086 0000000136c09cb8 ffff88004dcc6750 [118432.839292] ffff880036c09fd8 ffffffff81c16480 ffff88004dcc6750 ffff880036c09c70 [118432.839298] ffff880045148350 0000000001ffffff 0000000036c09cb8 ffffffff81c7b748 [118432.839304] Call Trace: [118432.839315] [] ? free_pcppages_bulk+0x2e9/0x330 [118432.839323] [] schedule+0x23/0x70 [118432.839330] [] rwsem_down_write_failed+0xdd/0x1b0 [118432.839338] [] call_rwsem_down_write_failed+0x13/0x20 [118432.839346] [] ? down_write+0x1e/0x20 [118432.839351] [] snd_pcm_unlink+0x16/0x120 [118432.839357] [] pcm_release_private+0x9/0x10 [118432.839364] [] snd_pcm_release_substream+0x88/0xc0 [118432.839369] [] snd_pcm_release+0x49/0xb0 [118432.839376] [] __fput+0xa2/0x240 [118432.839381] [] ____fput+0x9/0x10 [118432.839388] [] task_work_run+0x77/0xc0 [118432.839395] [] do_notify_resume+0x66/0x70 [118432.839401] [] ? vm_munmap+0x53/0x70 [118432.839407] [] int_signal+0x12/0x17 [120244.484130] atkbd serio0: Unknown key pressed (translated set 2, code 0xee on isa0060/serio0). [120244.484140] atkbd serio0: Use 'setkeycodes e06e ' to make it known. [120244.652297] atkbd serio0: Unknown key released (translated set 2, code 0xee on isa0060/serio0). [120244.652307] atkbd serio0: Use 'setkeycodes e06e ' to make it known. [121463.998374] hub 3-0:1.0: state 7 ports 4 chg 0000 evt 0002 [121463.998395] ohci-pci 0000:00:13.1: GetStatus roothub.portstatus [0] = 0x00030100 PESC CSC PPS [121463.998428] hub 3-0:1.0: port 1, status 0100, change 0003, 12 Mb/s [121463.998436] usb 3-1: USB disconnect, device number 2 [121463.998440] usb 3-1: unregistering device [121463.998446] usb 3-1: unregistering interface 3-1:1.0 [/proc/interrupts] [not sure if important, but after the crash, the ohci_hcd/ehci_hcd interrupts were not increasing, while the snd_atiixp were, from 1001279 to 1003054, but no further.] CPU0 0: 36049957 IO-APIC-edge timer 1: 96918 IO-APIC-edge i8042 8: 3 IO-APIC-edge rtc0 9: 11650992 IO-APIC-fasteoi acpi, b43 12: 9153653 IO-APIC-edge i8042 14: 186247 IO-APIC-edge pata_atiixp 15: 0 IO-APIC-edge pata_atiixp 17: 1003054 IO-APIC-fasteoi snd_atiixp 19: 15997946 IO-APIC-fasteoi ehci_hcd:usb1, ohci_hcd:usb2, ohci_hcd:usb3 23: 0 IO-APIC-fasteoi tifm_7xx1 40: 873601 PCI-MSI-edge radeon NMI: 691 Non-maskable interrupts LOC: 82 Local timer interrupts SPU: 0 Spurious interrupts PMI: 691 Performance monitoring interrupts IWI: 2125828 IRQ work interrupts RTR: 0 APIC ICR read retries THR: 0 Threshold APIC interrupts MCE: 0 Machine check exceptions MCP: 404 Machine check polls ERR: 0 MIS: 0