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| 1 | ========================== DMESG ================================= | |
| 2 | ||
| 3 | [62640.105166] INFO: task XXXXXXX:2336 blocked for more than 120 seconds. | |
| 4 | [62640.105279] Not tainted 3.14.0-XXXXXX+ #3 | |
| 5 | [62640.105349] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. | |
| 6 | [62640.105452] XXXXXXX D de7c8000 0 2336 2266 0x00000000 | |
| 7 | [62640.105564] de7d1e5c 00200086 c17d8de0 de7c8000 de7d1e00 c17d8de0 00200246 c17d8e00 | |
| 8 | [62640.105758] de7d1e44 de7c8000 de7d1fec de7c8000 c179b560 00200246 c17d8e00 de7d1e44 | |
| 9 | [62640.105983] de7c8000 0000007b c104eb7e c17d0000 00000000 ffffffcf c154c2d5 de7d1e44 | |
| 10 | [62640.106249] Call Trace: | |
| 11 | [62640.106345] [<c104eb7e>] ? preempt_count_sub+0xb/0xac | |
| 12 | [62640.106436] [<c154c2d5>] ? _raw_spin_unlock_irqrestore+0x27/0x45 | |
| 13 | [62640.106531] [<c154c2df>] ? _raw_spin_unlock_irqrestore+0x31/0x45 | |
| 14 | [62640.106634] [<c1055899>] ? prepare_to_wait_event+0x60/0xb5 | |
| 15 | [62640.106727] [<c134af26>] ? usb_put_dev+0x14/0x16 | |
| 16 | [62640.106818] [<c1548be3>] schedule+0x22/0x54 | |
| 17 | [62640.106934] [<c1353ac1>] usb_kill_urb+0x51/0x80 | |
| 18 | [62640.107019] [<c10554a7>] ? bit_waitqueue+0x54/0x54 | |
| 19 | [62640.107189] [<dfff1408>] usb_serial_generic_close+0x63/0x72 [usbserial] | |
| 20 | [62640.107301] [<dffef01f>] serial_port_shutdown+0x1f/0x21 [usbserial] | |
| 21 | [62640.107405] [<c12c0307>] tty_port_shutdown+0x5b/0x7c | |
| 22 | [62640.107496] [<c12c0a43>] tty_port_close+0x20/0x3d | |
| 23 | [62640.107592] [<dffef595>] serial_close+0x23/0x25 [usbserial] | |
| 24 | [62640.107683] [<c12b94c0>] tty_release+0xa4/0x52a | |
| 25 | [62640.107767] [<c1116a63>] ? locks_remove_posix+0xe/0x94 | |
| 26 | [62640.107858] [<c105d432>] ? do_raw_spin_unlock+0x9/0x78 | |
| 27 | [62640.107978] [<c110c40f>] ? fsnotify+0xe/0x287 | |
| 28 | [62640.108111] [<c110c40f>] ? fsnotify+0xe/0x287 | |
| 29 | [62640.108209] [<c10d791e>] __fput+0x89/0x1ec | |
| 30 | [62640.108293] [<c10d7ab5>] ____fput+0xd/0xf | |
| 31 | [62640.108371] [<c1044225>] task_work_run+0x66/0x89 | |
| 32 | [62640.108457] [<c1001f2b>] do_notify_resume+0x5c/0x5e | |
| 33 | [62640.108542] [<c154c759>] ? syscall_exit+0x8/0x1b | |
| 34 | [62640.108625] [<c154c812>] work_notifysig+0x24/0x2a | |
| 35 | [62640.108714] [<c1540000>] ? set_gssp_clnt+0xb3/0x125 | |
| 36 | [62640.108792] 2 locks held by SAXIOMgr/2336: | |
| 37 | [62640.108884] #0: (&tty->legacy_mutex){......}, at: [<c154c580>] tty_lock_nested+0x37/0x80
| |
| 38 | [62640.111449] #1: (&port->mutex){......}, at: [<c12c02ca>] tty_port_shutdown+0x1e/0x7c
| |
| 39 | ||
| 40 | ===================================== DEBUGFS ========================================= | |
| 41 | ||
| 42 | # mount -t debugfs none /sys/kernel/debug/ | |
| 43 | root@LCU:~# ls -l /sys/kernel/debug/usb/ | |
| 44 | -r--r--r-- 1 root root 0 Jan 1 00:00 devices | |
| 45 | drwxr-xr-x 3 root root 0 Jan 1 00:00 ohci | |
| 46 | root@LCU:~# ls -l /sys/kernel/debug/usb/ohci/ | |
| 47 | drwxr-xr-x 2 root root 0 Jan 1 00:00 0000:00:0f.4 | |
| 48 | root@LCU:~# ls -l /sys/kernel/debug/usb/ohci/0000\:00\:0f.4/ | |
| 49 | -r--r--r-- 1 root root 0 Jan 1 00:00 async | |
| 50 | -r--r--r-- 1 root root 0 Jan 1 00:00 periodic | |
| 51 | -r--r--r-- 1 root root 0 Jan 1 00:00 registers | |
| 52 | ||
| 53 | # cat /sys/kernel/debug/usb/devices | |
| 54 | ||
| 55 | T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 4 | |
| 56 | B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0 | |
| 57 | D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 | |
| 58 | P: Vendor=1d6b ProdID=0001 Rev= 3.14 | |
| 59 | S: Manufacturer=Linux 3.14.0-XXXXXX+ ohci_hcd | |
| 60 | S: Product=OHCI PCI host controller | |
| 61 | S: SerialNumber=0000:00:0f.4 | |
| 62 | C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA | |
| 63 | I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub | |
| 64 | E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms | |
| 65 | ||
| 66 | T: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0 | |
| 67 | D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 | |
| 68 | P: Vendor=0403 ProdID=6015 Rev=10.00 | |
| 69 | S: Manufacturer=XXXXXX | |
| 70 | S: Product=XXXXXX | |
| 71 | S: SerialNumber=XXXXXX | |
| 72 | C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr= 90mA | |
| 73 | I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=ftdi_sio | |
| 74 | E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms | |
| 75 | E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms | |
| 76 | ||
| 77 | T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 4 | |
| 78 | B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0 | |
| 79 | D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 | |
| 80 | P: Vendor=1d6b ProdID=0002 Rev= 3.14 | |
| 81 | S: Manufacturer=Linux 3.14.0-XXXXXXX+ ehci_hcd | |
| 82 | S: Product=EHCI Host Controller | |
| 83 | S: SerialNumber=0000:00:0f.5 | |
| 84 | C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA | |
| 85 | I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub | |
| 86 | E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms | |
| 87 | ||
| 88 | ||
| 89 | # for file in /sys/kernel/debug/usb/ohci/0000\:00\:0f.4/*; do echo "== ${file} =="; cat ${file}; echo; done
| |
| 90 | == /sys/kernel/debug/usb/ohci/0000:00:0f.4/async == | |
| 91 | ||
| 92 | == /sys/kernel/debug/usb/ohci/0000:00:0f.4/periodic == | |
| 93 | size = 32 | |
| 94 | ||
| 95 | == /sys/kernel/debug/usb/ohci/0000:00:0f.4/registers == | |
| 96 | bus pci, device 0000:00:0f.4 | |
| 97 | OHCI PCI host controller | |
| 98 | ohci_hcd | |
| 99 | OHCI 1.0, NO legacy support registers, rh state running | |
| 100 | control 0x283 RWC HCFS=operational CBSR=3 | |
| 101 | cmdstatus 0x00000 SOC=0 | |
| 102 | intrstatus 0x00000020 FNO | |
| 103 | intrenable 0x8000005e MIE RHSC UE RD SF WDH | |
| 104 | ed_controlhead 00157000 | |
| 105 | ed_bulkhead 00157040 | |
| 106 | hcca frame 0xa41f | |
| 107 | fmintvl 0xa7782edf FIT FSMPS=0xa778 FI=0x2edf | |
| 108 | fmremaining 0x8000059a FRT FR=0x059a | |
| 109 | periodicstart 0x2a2f | |
| 110 | lsthresh 0x0628 | |
| 111 | hub poll timer off | |
| 112 | roothub.a 03000204 POTPGT=3 NPS NDP=4(4) | |
| 113 | roothub.b 00000000 PPCM=0000 DR=0000 | |
| 114 | roothub.status 00008000 DRWE | |
| 115 | roothub.portstatus [0] 0x00000103 PPS PES CCS | |
| 116 | roothub.portstatus [1] 0x00000100 PPS | |
| 117 | roothub.portstatus [2] 0x00000100 PPS | |
| 118 | roothub.portstatus [3] 0x00000100 PPS |
