Date: Thu, 05 May 2005 14:51:26 -0700 From: Julian Elischer <julian@elischer.org> To: Julian Elischer <julian@elischer.org> Cc: Helge Oldach <usbcrash@oldach.net> Subject: Re: recent USB MFCs cause panics Message-ID: <427A955E.4070605@elischer.org> In-Reply-To: <427A8EF3.70003@elischer.org> References: <200505050618.j456IleO001353@sep.oldach.net> <427A887F.3020108@elischer.org> <427A8EF3.70003@elischer.org>
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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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