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Date: Mon, 30 May 2011 21:32:54 +0200
From: Riccardo Magliocchetti <riccardo.magliocchetti@...il.com>
To: Oliver Neukum <oneukum@...e.de>
CC: linux-usb@...r.kernel.org,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Oliver Neukum <oliver@...kum.name>,
Greg Kroah-Hartman <gregkh@...e.de>
Subject: Re: [2.6.39] crash in acm_ctrl_msg+0x16/0x59
Il 30/05/2011 11:19, Riccardo Magliocchetti ha scritto:
> Hi,
>
> Il 30/05/2011 07:54, Oliver Neukum ha scritto:
>> Am Sonntag, 29. Mai 2011, 16:04:02 schrieb Riccardo Magliocchetti:
>>
>>> mtp-probe: bus: 6, device: 4 was not an MTP device
>>> [20462.901834] cdc_acm 6-1:1.0: ttyACM0: USB ACM device
>>> [20462.904417] usbcore: registered new interface driver cdc_acm
>>> [20462.904420] cdc_acm: v0.26:USB Abstract Control Model driver for USB
>>> modems and ISDN adapters
>>> [20463.624142] usb 6-1: USB disconnect, device number 4
>>> [20463.641859] CPU 0
>>>
>>> This is the stracktrace:
>>>
>>> acm_ctrl_msg+0x16/0x59
>>> mutex_lock+0x13/0x2a
>>> acm_port_down+0x4c/0xcb
>>> acm_tty_close+0x75/0x93
>>> tty_release+0x1b5/0x47c
>>> ? compat_do_readv_write+0x199/0x1ae
>>> fput+0xf8/0x1ad
>>> filp_close+0x69/0x75
>>> sys_close+0x8a/0xea
>>> sysenter_dispatch+0x07/0x32
>>
>> So we are trying to talk to a device that is already gone.
>> Is there anything unusual about your device? Could you
>> post "lsusb -v"?
>
> Yes, the unusual thing is that is very prone to freezing when booting,
> in fact it freezed when i got the crash in the laptop. Will post lsusb
> output later in the day.
Here's the lsusb -v
Bus 006 Device 003: ID 1457:5122 First International Computer, Inc.
OpenMoko Neo1973 / Neo Freerunner kernel cdc_ether USB network
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 2 Communications
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x1457 First International Computer, Inc.
idProduct 0x5122 OpenMoko Neo1973 / Neo Freerunner kernel
cdc_ether USB network
bcdDevice 3.12
iManufacturer 1 Linux 2.6.29-20100313.git973a41fc with
s3c2410_ud
iProduct 2 RNDIS/Ethernet Gadget
iSerial 0
bNumConfigurations 2
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 67
bNumInterfaces 2
bConfigurationValue 2
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 2 Communications
bInterfaceSubClass 2 Abstract (modem)
bInterfaceProtocol 255 Vendor Specific (MSFT RNDIS?)
iInterface 3 RNDIS Communications Control
CDC Header:
bcdCDC 1.10
CDC Call Management:
bmCapabilities 0x00
bDataInterface 1
CDC ACM:
bmCapabilities 0x00
CDC Union:
bMasterInterface 0
bSlaveInterface 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 32
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 10 CDC Data
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0
iInterface 4 RNDIS Ethernet Data
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 80
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 2 Communications
bInterfaceSubClass 6 Ethernet Networking
bInterfaceProtocol 0
iInterface 5 CDC Ethernet Control Model (ECM)
CDC Header:
bcdCDC 1.10
CDC Union:
bMasterInterface 0
bSlaveInterface 1
CDC Ethernet:
iMacAddress 7 DA51BC59708F
bmEthernetStatistics 0x00000000
wMaxSegmentSize 1514
wNumberMCFilters 0x0000
bNumberPowerFilters 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 32
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 10 CDC Data
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 2
bInterfaceClass 10 CDC Data
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0
iInterface 6 CDC Ethernet Data
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Device Status: 0x0001
Self Powered
thanks,
riccardo
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