Date: Mon, 25 Jun 2007 16:07:05 -0600 (MDT) From: "M. Warner Losh" <imp@bsdimp.com> To: nike_d@cytexbg.com Cc: freebsd-current@freebsd.org, hselasky@c2i.net Subject: Re: panic when removing pccard Message-ID: <20070625.160705.163264235.imp@bsdimp.com> In-Reply-To: <467F7A69.9000909@cytexbg.com> References: <4677BD25.8030202@cytexbg.com> <20070623.212128.323264592.imp@bsdimp.com> <467F7A69.9000909@cytexbg.com>
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In message: <467F7A69.9000909@cytexbg.com>
Niki Denev <nike_d@cytexbg.com> writes:
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: M. Warner Losh wrote:
: > I've done some testing with the recently improved in-tree usb stack,
: > and it doesn't panic for me when I remove a CardBus USB card, both
: > with and without devices. It also does remove the extra /dev/usb*
: > entries properly. I couldn't cause any crashes with the latest
: > -current.
: >
: > Warner
:
: Unfortunately it still does panic for me by simply inserting the card
: (Huawei E630 3g card a.k.a Vodafone Mobile Connect), waiting for the
: usb busses to be added and the ucom0 device to be recognized ( it takes
: a few seconds) and then ejecting the card.
: Again the message is :
:
: ucom0: detached
: (null): at uhub2 port 1 (addr 2) disconnected
:
: Fatal trap 12: page fault while in kernel mode
: fault virtual address = 0x400
: fault code = supervisor read, page not presend
: instruction pointer = 0x20:0xc0595b2d
: stack pointer = 0x28:0xd2f4db34
: frame pointer = 0x28:0xd2f4db5c
: code segment = base 0x0, limit 0xfffff, type 0x1b
: = DPL 0, pres 1, def32 1, gran 1
: processor eflags = interrupt enabled, resume, IOPL = 0
: current process = 28 (cbb0 event thread)
: trap number = 12
: panic: page fault
:
: This problem does not exist if i compile my kernel with the HPS Usb Stack.
I don't suppose you could compile a kernel with DDB and get me a
traceback?
Warner
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