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spice: fix initialization order 

Register displaychangelistener last, after spice is fully initialized,
otherwise we may hit NULL pointer dereferences when qemu starts calling
our callbacks.

Commit e250d949fe triggers this bug.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2012-11-02 09:37:27 +01:00
parent 365b1e9e34
commit bdd4df332a
2 changed files with 9 additions and 3 deletions
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10
hw/qxl.c
View File

@ -2049,6 +2049,7 @@ static int qxl_init_primary(PCIDevice *dev)
PCIQXLDevice *qxl = DO_UPCAST(PCIQXLDevice, pci, dev);
VGACommonState *vga = &qxl->vga;
PortioList *qxl_vga_port_list = g_new(PortioList, 1);
int rc;
qxl->id = 0;
qxl_init_ramsize(qxl);
@ -2063,9 +2064,14 @@ static int qxl_init_primary(PCIDevice *dev)
qemu_spice_display_init_common(&qxl->ssd, vga->ds);
qxl0 = qxl;
register_displaychangelistener(vga->ds, &display_listener);
return qxl_init_common(qxl);
rc = qxl_init_common(qxl);
if (rc != 0) {
return rc;
}
register_displaychangelistener(vga->ds, &display_listener);
return rc;
}
static int qxl_init_secondary(PCIDevice *dev)

2
ui/spice-display.c
View File

@ -573,7 +573,6 @@ void qemu_spice_display_init(DisplayState *ds)
{
assert(sdpy.ds == NULL);
qemu_spice_display_init_common(&sdpy, ds);
register_displaychangelistener(ds, &display_listener);
sdpy.qxl.base.sif = &dpy_interface.base;
qemu_spice_add_interface(&sdpy.qxl.base);
@ -581,4 +580,5 @@ void qemu_spice_display_init(DisplayState *ds)
qemu_spice_create_host_memslot(&sdpy);
qemu_spice_create_host_primary(&sdpy);
register_displaychangelistener(ds, &display_listener);
}