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Date:      Mon, 02 Sep 2013 12:59:57 -0700
From:      Yuri <yuri@rawbw.com>
To:        FreeBSD Hackers <hackers@freebsd.org>
Subject:   kgdb 'next' command crashes kernel during inter-VM kernel debugging
Message-ID:  <5224EE3D.10303@rawbw.com>

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I am trying to debug kernel in one VBox VM from another VBox VM using 
this howto: 
http://census-labs.com/news/2009/01/19/freebsd-kernel-debugging with the 
exception that on the target VM hint.uart.0.flags="0x90" is set instead.

It works, stops at breakpoints, etc. However, kgdb command "n" (next) 
causes target to reboot.

Device /dev/cuau0 is used for the serial port. On the host it goes 
through the local socket /tmp/com_1
All with FreeBSD 10 (trunk) amd64, virtualbox 4.2.16

Yuri



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