spicevmc: Return early when instance has no device state

Enterprise / Virtualization / SPICE - Pavel Grunt [redhat.com] - 6 November 2015 04:26 UTC

Same approach as in spice_server_char_device_wakeup(). Avoid segmentation fault when the webdav channel (spice port channel) is used with the vnc display: #0 0x00007ffff7aab734 in spice_char_device_state_opaque_get (dev=0x0) at char_device.c:720 #1 0x00007ffff7b0850c in spice_server_port_event (sin=, event=) at spicevmc.c:578 #2 0x0000555555787ba4 in set_guest_connected (port=, guest_connected=1) at hw/char/virtio-console.c:89 #3 0x0000555555678d7c in control_out (len=, buf=0x55555775c3a0, vser=0x5555578d1540) at /home/pgrunt/RH/qemu/hw/char/virtio-serial-bus.c:404 #4 0x0000555555678d7c in control_out (vdev=0x5555578d1540, vq=0x555557941bc8) at /home/pgrunt/RH/qemu/hw/char/virtio-serial-bus.c:441 #5 0x000055555588eb98 in aio_dispatch (ctx=0x5555562e1a50) at aio-posix.c:160 #6 0x00005555558829ee in aio_ctx_dispatch (source=, callback=, user_data=) at async.c:226 #7 0x00007ffff2010e3a in g_main_context_dispatch () at /lib64/libglib-2.0.so.0 #8 0x000055555588d8fb in main_loop_wait () at main-loop.c:211 #9 0x000055555588d8fb in main_loop_wait (timeout=) at main-loop.c:256 #10 0x000055555588d8fb in main_loop_wait (nonblocking=) at main-loop.c:504 #11 0x000055555561b664 in main () at vl.c:1891

6ebb2eb spicevmc: Return early when instance has no device state
server/spicevmc.c | 5 +++++
1 file changed, 5 insertions(+)

Upstream: cgit.freedesktop.org

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