[Bug 83284] qemu crash if I reboot a windows guest when "past / copy clipboard" function is enabled ( vd_agent )

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83284

--- Comment #3 from Barto <mister.freeman at laposte.net> ---
(In reply to Marc-Andre Lureau from comment #2)
> I can't manage to reproduce. Can you provide a qemu backtrace when the crash
> happens? thanks a lot

I can easily reproduce this bug,

very important: you have to use a rolling release linux distribution ( like
archlinux in order to have the latest version of system packages, like the
kernel, xorg server ) and exactly the same settings I use,

I use archlinux 64 bits, kernel 3.17.1-1,qemu 2.1.2-1,

the guest is windows 7 32 bits with spice-guest-tools-0.74.exe,

the qemu script :


export SPICE_PORT=5924
export QEMU_AUDIO_DRV=alsa
export QEMU_AUDIO_DAC_FIXED_FREQ=48000
export QEMU_AUDIO_ADC_FIXED_FREQ=48000 

qemu-system-x86_64 \
-m 1024 -vga  qxl -spice port=5930,disable-ticketing -cpu host -enable-kvm 
-machine type=pc,accel=kvm -smp 2 \
-soundhw ac97 \
-drive file="/mnt/wd640/machines virtuelles/win7storage/win7.vdi",if=virtio \
-netdev user,id=vmnic,hostname=arch-qemu -device virtio-net,netdev=vmnic \
-localtime -daemonize -usbdevice tablet -k fr \
-monitor telnet:127.0.0.1:12997,server,nowait,ipv4 \
-device virtio-serial-pci -device
virtserialport,chardev=spicechannel0,name=com.redhat.spice.0 -chardev
spicevmc,id=spicechannel0,name=vdagent


spicec -h 127.0.0.1 -p 5930 --hotkeys release-cursor=ctrl+alt

if I try to reboot I get a crash :

qemu-system-x86[1067]: segfault at 0 ip 00007f82e2a80a1b sp 00007ffff2423440
error 4 in libspice-server.so.1.9.0[7f82e2a74000+11e000]


how to use gdb with my qemu script in order to have a backtrace ?

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