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| author | Pavel Grunt <pgrunt@redhat.com> | 2015-11-05 16:25:55 +0100 |
|---|---|---|
| committer | Pavel Grunt <pgrunt@redhat.com> | 2015-11-06 11:26:17 +0100 |
| commit | 6ebb2ebe2a76fc56c0a965d07cbdc66315192bc6 (patch) | |
| tree | ead716fb22c1ffc4e5d8d10d29bbc1ac8068ca8d /server/spicevmc.c | |
| parent | e76f40295209103cc7a0cf7003f8422c7e02577d (diff) | |
| download | spice-6ebb2ebe2a76fc56c0a965d07cbdc66315192bc6.tar.gz spice-6ebb2ebe2a76fc56c0a965d07cbdc66315192bc6.tar.xz spice-6ebb2ebe2a76fc56c0a965d07cbdc66315192bc6.zip | |
spicevmc: Return early when instance has no device state
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=<optimized out>, event=<optimized out>) at spicevmc.c:578
#2 0x0000555555787ba4 in set_guest_connected (port=<optimized out>, guest_connected=1) at hw/char/virtio-console.c:89
#3 0x0000555555678d7c in control_out (len=<optimized out>, 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=<optimized out>, callback=<optimized out>, user_data=<optimized out>) 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=<optimized out>)
at main-loop.c:256
#10 0x000055555588d8fb in main_loop_wait (nonblocking=<optimized out>)
at main-loop.c:504
#11 0x000055555561b664 in main () at vl.c:1891
Diffstat (limited to 'server/spicevmc.c')
| -rw-r--r-- | server/spicevmc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/server/spicevmc.c b/server/spicevmc.c index e10f1837..6ac15611 100644 --- a/server/spicevmc.c +++ b/server/spicevmc.c @@ -569,6 +569,11 @@ SPICE_GNUC_VISIBLE void spice_server_port_event(SpiceCharDeviceInstance *sin, ui { SpiceVmcState *state; + if (sin->st == NULL) { + spice_warning("no SpiceCharDeviceState attached to instance %p", sin); + return; + } + state = (SpiceVmcState *)spice_char_device_state_opaque_get(sin->st); if (event == SPICE_PORT_EVENT_OPENED) { state->port_opened = TRUE; |