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From: Marcel Moolenaar <xcllnt@mac.com>
To: Julian Elischer <julian@elischer.org>
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Date: Mon, 3 Dec 2007 20:21:18 -0800
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Cc: FreeBSD Current <current@freebsd.org>
Subject: Re: remote gdb failures in recent builds (last 6 months or so.)
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On Dec 3, 2007, at 8:14 PM, Julian Elischer wrote:

>
> Here's a trace of kgdb attempting to sync with a kernel over the  
> serial port..
>
> note that:
> 1/ gdb CAN read the damned data.. this is obtained from ktrace.
> 2/ it prints out the packet in the error message.
> 3/ teh kernel is sending each message twice, in pairs.
> 4/ after kgdb finally sends a '-' (NAK) teh kernel sends ONE MORE
> which seems to be accepted
>
> Anyone have any clues?

Works just fine for me on all platforms, but I always use uart(4).

What platform are you using and what gdb?
How's the serial connection; through a comm-server?
What's the line setting, which driver?

-- 
Marcel Moolenaar
xcllnt@mac.com