recent USB MFCs cause panics

[Julian Elischer]

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

>
>
> 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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