[Qemu-devel] [Bug 723871] Re: qemu-kvm-0.14.0 Aborts with -vga qxl

[Paul Whittaker]

I get the same error under very similar conditions:

Host is Athlon II X3 400e (triple core), host OS is my own DIET-PC
embedded platform, 2.6.34.1 x86_64 kernel with x86_64 userspace.  Qemu-
kvm compiled myself from official qemu-kvm-0.14.0 sources Debian Lenny,
against spice / spice-protocol 0.6.4, using:

export CFLAGS='-O3 -m64'
./configure --prefix=/usr/local --enable-mixemu --disable-brlapi \
        --disable-vnc-tls --enable-system --disable-linux-user \
        --disable-curses --audio-drv-list="oss sdl" --enable-io-thread \
        --disable-vnc-png --enable-vnc-thread --enable-spice \
        --audio-card-list="ac97 es1370 sb16 cs4231a adlib gus hda" \
        --target-list="i386-softmmu x86_64-softmmu arm-softmmu mips-softmmu 
mipsel-softmmu ppc-softmmu ppc64-softmmu sparc-softmmu sparc64-softmmu"

Guest is Windows XP SP3 (uniprocessor), crash with exact same error as
above occurs when attempting to install qxl 0.6.3 spice driver on the
guest.  Guest has no virtio-serial or vdagent, but has viostor and
virtio network drivers.

Started using:

qemu-system-x86_64 -M pc -m 512 -vga qxl -soundhw ac97 -localtime -rtc-
td-hack -enable-kvm -name WinXP -net
nic,model=virtio,macaddr=00:77:69:6e:78:70 -net tap,ifname=winxp -drive
file=winxppro.img,if=virtio,aio=threads,boot=on -boot c

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https://bugs.launchpad.net/bugs/723871

Title:
  qemu-kvm-0.14.0 Aborts with -vga qxl

Status in QEMU:
  New

Bug description:
  Host CPU is Core i7 Q820.  KVM is from 2.6.35-gentoo-r5 kernel (x86_64).
  Host has spice-0.7.2 and spice-protocol-0.7.0.
  Guest is Windows XP SP3 with qxl driver 0.6.1, virtio-serial 1.1.6 and 
vdagent 0.6.3.

  qemu-kvm is started like so:
  qemu-system-x86_64 -cpu host -enable-kvm -pidfile /home/rick/qemu/hds/wxp.pid 
-drive 
file=/home/rick/qemu/hds/wxp.raw,if=virtio,media=disk,aio=native,snapshot=on -m 
768 -name WinXP -net nic,model=virtio -net user -localtime -usb -vga qxl 
-device virtio-serial -chardev spicevmc,name=vdagent,id=vdagent -device 
virtserialport,chardev=vdagent,name=com.redhat.spice.0 -spice 
port=1234,disable-ticketing -monitor stdio
  and crashes with:
  qemu-system-x86_64: /home/rick/qemu/src/qemu-kvm-0.14.0/qemu-kvm.c:1724: 
kvm_mutex_unlock: Assertion `!cpu_single_env' failed.
  Aborted

  If I use -no-kvm, it works fine.  If I use -vga std, it works fine.
  -enable-kvm and -vga qxl crashes.