Date: Sat, 23 Apr 2005 07:47:45 -0400 From: Craig Rodrigues <rodrigc@crodrigues.org> To: Randy Bush <randy@psg.com> Cc: FreeBSD USB <freebsd-usb@freebsd.org> Subject: Re: sandisk usb freeze Message-ID: <20050423114745.GA43345@crodrigues.org> In-Reply-To: <16999.5087.868333.378085@roam.psg.com> References: <16999.5087.868333.378085@roam.psg.com>
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On Wed, Apr 20, 2005 at 04:45:51PM -1000, Randy Bush wrote: > any pointers on how to best debug? Debugging USB stuff can be a bit ugly. One technique is to have USB_DEBUG set in your kernel config file, and then after rebooting, play with setting values of the following sysctls: hw.usb.umass.debug and hw.usb.debug . The other technique is to have two machines set up for kernel debugging, set a breakpoint somewhere in the USB code that would be accessed during an fdisk, and single step through the debugger until you hit the point where things reboot. It's not pretty.... -- Craig Rodrigues rodrigc@crodrigues.org
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