Date: Fri, 25 Nov 2011 07:50:13 -0500
From: Michael Butler <imb@protected-networks.net>
To: =?ISO-8859-1?Q?Gustau_P=E9rez?= <gperez@entel.upc.edu>
Cc: freebsd-emulation@freebsd.org
Subject: Re: Freeze with 10.0 and VirtualBox {4.1.4|4.1.6|4.1.51r38464}
Message-ID: <4ECF8F05.8000007@protected-networks.net>
In-Reply-To: <4ECF7440.4070300@entel.upc.edu>
References: <4ECF7440.4070300@entel.upc.edu>
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On 11/25/11 05:56, Gustau Pérez wrote: > > Hi, > > I'm seeing freezes with AMD64/CURRENT r227817 (as of Nov 22th). The > machine freezes hard when starting a virtual machine. It used work a few > weeks ago. > > I've been using Bernhard's from a lot of time. 4.1.4 from a month ago > freezes. I had to apply the patch to fix the D_PSEUDO problem. I see it > was posted in the vbox mailing lists and commited upstream. So I > yesterday picked last virtualbox-port.tar.gz version at > http://svn.bluelife.at/nightlies. 4.1.6 included there also freezes the > machine. > > So I recompiled the kernel with WITNESS, DEADLKRES and friends I see a > deadlock. This is the trace I got in my messages after rebooting the > machine: > > Nov 25 08:57:06 portgus kernel: acquiring duplicate lock of same type: > "IPRT Fast Mutex Semaphore" > Nov 25 08:57:06 portgus kernel: acquiring duplicate lock of same type: > "IPRT Fast Mutex Semaphore" > Nov 25 08:57:06 portgus kernel: 1st IPRT Fast Mutex Semaphore @ \ > /usr/ports/emulators/virtualbox-ose-kmod/work/VirtualBox-4.1.6_OSE/out/freebsd.amd64/release/bin/src/vboxdrv/r0drv/freebsd/semfastmutex-r0drv-freebsd.c:100 > > > I don't know if I'll have time to check this. I will try the versions in > the ports tree (4.012?) but if it works it will allow us to work until > 4.1.X gets into the tree. This appears to be related to recent changes in the locking mechanisms - specifically, SVN r227758 and r227788. I have not had time to explore further :-( imb
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