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Date:      Wed, 15 Jun 2005 08:25:44 +0200
From:      "Norbert Koch" <NKoch@demig.de>
To:        "Maksim Yevmenkin" <maksim.yevmenkin@savvis.net>
Cc:        "Freebsd-Hackers@Freebsd.Org" <freebsd-hackers@freebsd.org>
Subject:   RE: kernel panic in usb0; was: RE: using vkbd device
Message-ID:  <000e01c57173$0f453a20$4801a8c0@ws-ew-3.W2KDEMIG>
In-Reply-To: <42AF6A83.4050608@savvis.net>

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> > When quickly connecting/disconnecting
> 
> i guess you mean here unplug the keyboard and then immediately plug it 
> back, right?

I mean plug in / plug out, repeat for ever.

> can you tell what value "pipe" handle has? i suspect its NULL

yes

> can you tell what value "iface" handle has? i suspect its NULL

yes

> 
> thats ok. splusb is defined as splbio

oh, ok.

> what is your usb controller? uhci/ohci? what chip?

ohci

AcerLabs M5237 (Aladdin-V)


> please compile kernel with DIAGNOSTIC and USB_DEBUG. then try to adjust 
> various "debug" knobs with sysctl(8) to get debug traces. at this point 
> it looks like a race condition of some sort (to me).

ok, I'll try this.



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