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Date:      Wed, 25 Nov 2009 23:30:52 -0800
From:      "Guojun Jin" <gjin@ubicom.com>
To:        "Hans Petter Selasky" <hselasky@c2i.net>
Cc:        bugs@freebsd.org, freebsd-stable@freebsd.org, freebsd-usb@freebsd.org
Subject:   RE: 8.0-RC USB/FS problem
Message-ID:  <CB2DD11991B27C4F99935E6229450D3203950A34@STORK.scenix.com>
References:  <CB2DD11991B27C4F99935E6229450D3203950A1C@STORK.scenix.com> <CB2DD11991B27C4F99935E6229450D3203950A29@STORK.scenix.com> <CB2DD11991B27C4F99935E6229450D3204E5C6A4@STORK.scenix.com> <200911250937.08267.hselasky@c2i.net>

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Most crash had the same back trace. This is also true when USB access =
hangs, then unplug the drive.

More interesting is the third AMD laptop (dual core) had similar =
problem, but it is less crashing but hanging.

The core information is available at the same place (bt file is also =
attached):

http://www.daemonfun.com/archives/public/USB

-rw-r--r--  1 jin         wheel      4668 Nov 25 23:17 bt
-rw-------  1 4294967294  wheel     80074 Nov 25 22:59 core.txt.0
-rw-r--r--  1 4294967294  wheel  72108588 Nov 25 23:09 coredump-0.tbz

core.txt.0 is from savecore, and bt is I did back trace so it has =
slightly more information than core.txt.
The tbz file contains the kernel.symbol and all files from savecore.

I will continute to dig this and I will set more coredump if new crash =
happens at different place.
Please let me know anything I can help debug futher before Dec 3rd. I =
will on travel for a while and I do
not want to hold release for another two weeks. So let's resolve the =
problem before I am on travel if possible.

-----Original Message-----
From: Hans Petter Selasky [mailto:hselasky@c2i.net]
Sent: Wed 11/25/2009 12:37 AM
To: Guojun Jin
Cc: freebsd-usb@freebsd.org; bugs@freebsd.org; =
freebsd-stable@freebsd.org
Subject: Re: 8.0-RC USB/FS problem
=20
On Wednesday 25 November 2009 00:08:59 Guojun Jin wrote:
> What other debug shall we turn on to analyze this problem.

Are you able to extract the panic message? Try enabling dump on the swap =

partition.

--HPS



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