Re: [Qemu-devel] qemu: qemu_mutex_lock: Invalid argument

[Corentin Chary]

On Tue, Sep 14, 2010 at 10:00 PM, Rick Vernam <address@hidden> wrote:
> I don't have nearly enough info to file a proper bug report.
>
> I am running qemu-kvm-0.13.0 rc1
> starting qemu like so:
> /root/qemu/bin/qemu-system-x86_64 -cpu host -enable-kvm -drive
> file=/root/qemu/w2k3_server.raw,if=virtio,aio=native -net
> nic,model=virtio,macaddr=52:54:00:12:34:56 -net tap,ifname=tap0 -localtime -
> usb -usbdevice tablet -vga std -vnc :25581 -monitor stdio -m 512 -runas rick
>
> Every now and again, qemu will up and quit leaving only the following message:
> qemu: qemu_mutex_lock: Invalid argument
>
> At the moment I can't stop what I'm doing to go learn how to debug qemu, but
> I'd be happy if anybody is interested in suggesting something I could do to
> provide some info about this bug...
> Would it be helpful to build with -O0 -g and run in gdb, then get a bt when it
> dies?
> I haven't put this into production yet, so I can still afford downtime & re-
> compiles...etc.
>
> thanks..
>
> host machine is:
> 2.6.32-gentoo-r7 x86_64 Intel(R) Xeon(R) CPU E5450 @ 3.00GHz GenuineIntel
> GNU/Linux
>
> guest os is Windows Server 2003, Standard Edition.  Service Pack 2.
> Red Het VirtIO Ethernet Adapter Driver Version: 5.1.209.605
> Red Hat VirtIO SCSI Controller Driver Version: 6.0.0.10
>
> here is how I ran configure:
> ./configure --prefix=/root/qemu --target-list=x86_64-softmmu --extra-cflags="-
> march=native -O2 -pipe" --extra-ldflags="-march=native -O2 -pipe" --audio-drv-
> list= --audio-card-list= --disable-curses --disable-curl --enable-vnc-tls --
> enable-vnc-sasl --enable-vnc-jpeg --enable-vnc-png --enable-vnc-thread
>
>

There is two patch for that
http://patchwork.ozlabs.org/patch/62420/
http://patchwork.ozlabs.org/patch/62263/

On of these patch is already in master:
http://git.qemu.org/qemu.git/commit/?id=ac71103dc6b408775ae72067790ab367912f75ec

-- 
Corentin Chary
http://xf.iksaif.net