recent USB MFCs cause panics

[Julian Elischer]

Julian Elischer wrote:

>
>
> Julian Elischer wrote:
>
> try:
>
> in usb_port.h
> comment out line 425 (as below)
>
> 422
>    423 #define config_detach(dev, flag) \
>    424         do { \
>    425                 /* device_detach(dev); */ \
>    426                 free(device_get_ivars(dev), M_USB); \
>    427                 device_delete_child(device_get_parent(dev), 
> dev); \
>    428         } while (0);
>    429
>

hmm maybe not the right answer..
maybe the answer is to comment out

        DEVMETHOD(bus_child_detached, uhub_child_detached),

at line 134 of uhub.c
    DEVMETHOD(bus_child_detached, uhub_child_detached),
It's kind of hard for me to...... (sudden thought appears)

DUH you are running this in a hub aren't you?

(I'm not)

so, yes, remove that line and try again.





>>    
>>
>>
>> Helge Oldach wrote:
>>
>>> Julian Elischer:
>>>  
>>>
>>>> any chance of getting a stack trace or a core dump?
>>>>   
>>>
>>>
>>>
>>> Ok, here we go:
>>>
>>>  
>>>
>>
>>> #6  0xc016f772 in device_get_ivars (dev=0x0) at 
>>> /usr/src/sys/kern/subr_bus.c:998
>>> #7  0xc0237d5d in usb_disconnect_port (up=0xc18971c4, 
>>> parent=0xc1897280)
>>>    at /usr/src/sys/dev/usb/usb_subr.c:1440
>>>  
>>>
>> can you go to this frame
>> "up 7"
>> and print dev and  i and *dev
>>
>>> #8  0xc02423b4 in uhub_explore (dev=0xc1897380) at 
>>> /usr/src/sys/dev/usb/uhub.c:488
>>> #9  0xc02424f1 in uhub_explore (dev=0xc1813400) at 
>>> /usr/src/sys/dev/usb/uhub.c:571
>>> #10 0xc02340cf in usb_discover (v=0xc18110c0) at 
>>> /usr/src/sys/dev/usb/usb.c:745
>>> #11 0xc0233b92 in usb_event_thread (arg=0xc18110c0) at 
>>> /usr/src/sys/dev/usb/usb.c:431
>>> (kgdb) list *0xc016f772
>>> 0xc016f772 is in device_get_ivars (/usr/src/sys/kern/subr_bus.c:999).
>>> 994    }
>>> 995   996    void *
>>> 997    device_get_ivars(device_t dev)
>>> 998    {
>>> 999        return dev->ivars;
>>> 1000    }
>>> 1001   1002    void
>>> 1003    device_set_ivars(device_t dev, void * ivars)
>>> (kgdb) quit
>>>  
>>>
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>
>
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