Date: Thu, 29 Apr 2010 12:41:36 +0200 From: Bernhard Froehlich <decke@FreeBSD.org> To: <yuri@rawbw.com> Cc: freebsd-hackers@freebsd.org, vbox@FreeBSD.org Subject: Re: How to troubleshoot why VirtualBox kernel module freezes the system? Message-ID: <6ee1a3134e128d8a0836be552e0c9f09@bluelife.at> In-Reply-To: <4BD8980A.9000706@rawbw.com> References: <4BD8980A.9000706@rawbw.com>
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On Wed, 28 Apr 2010 13:18:18 -0700, Yuri <yuri@rawbw.com> wrote: > VirtualBox kernel module (port emulators/virtualbox-ose-kmod) began to > cause system freezes from some kernel change around the end of January. > Once the system freezes it has to be rebooted. Soundcard, if it was > playing something, begins to cycle some very short piece. > Nothing is logged into /var/log/messages. > > Is there any way to troubleshoot this, like enabling some kernel > configuation options? > What is normally done in such case? > Should I run system under kernel debugger? But would it detect something > if it's not a SEGV but the freeze? Mario Lobo currently sees something similar and has already tracked it down to probably be a drm/Xorg issue. It does work fine for him if he uses the virtualbox-ose-devel ports and VNC so without running an xserver on that machine. To debug this it's probably the best to try it with a serial console and the descriptions in the developers handbook. http://www.freebsd.org/doc/en/books/handbook/serialconsole-setup.html http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug-online-gdb.html -- Bernhard Froehlich http://www.bluelife.at/
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