65 lines
2.1 KiB
Diff
65 lines
2.1 KiB
Diff
From 13cc38946d570a43c1a913b8fb014c189e660ceb Mon Sep 17 00:00:00 2001
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From: Gerd Hoffmann <kraxel@redhat.com>
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Date: Fri, 2 Nov 2012 09:37:27 +0100
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Subject: [PATCH] spice: fix initialization order
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Register displaychangelistener last, after spice is fully initialized,
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otherwise we may hit NULL pointer dereferences when qemu starts calling
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our callbacks.
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Commit e250d949feb1334828f27f0d145c35f29c4b7639 triggers this bug.
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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---
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hw/qxl.c | 10 ++++++++--
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ui/spice-display.c | 2 +-
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2 files changed, 9 insertions(+), 3 deletions(-)
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diff --git a/hw/qxl.c b/hw/qxl.c
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index f88829c..9418ecb 100644
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--- a/hw/qxl.c
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+++ b/hw/qxl.c
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@@ -2061,6 +2061,7 @@ static int qxl_init_primary(PCIDevice *dev)
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PCIQXLDevice *qxl = DO_UPCAST(PCIQXLDevice, pci, dev);
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VGACommonState *vga = &qxl->vga;
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PortioList *qxl_vga_port_list = g_new(PortioList, 1);
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+ int rc;
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qxl->id = 0;
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qxl_init_ramsize(qxl);
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@@ -2075,9 +2076,14 @@ static int qxl_init_primary(PCIDevice *dev)
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qemu_spice_display_init_common(&qxl->ssd, vga->ds);
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qxl0 = qxl;
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- register_displaychangelistener(vga->ds, &display_listener);
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- return qxl_init_common(qxl);
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+ rc = qxl_init_common(qxl);
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+ if (rc != 0) {
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+ return rc;
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+ }
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+
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+ register_displaychangelistener(vga->ds, &display_listener);
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+ return rc;
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}
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static int qxl_init_secondary(PCIDevice *dev)
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diff --git a/ui/spice-display.c b/ui/spice-display.c
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index d062765..4c24c32 100644
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--- a/ui/spice-display.c
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+++ b/ui/spice-display.c
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@@ -617,7 +617,6 @@ void qemu_spice_display_init(DisplayState *ds)
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{
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assert(sdpy.ds == NULL);
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qemu_spice_display_init_common(&sdpy, ds);
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- register_displaychangelistener(ds, &display_listener);
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sdpy.qxl.base.sif = &dpy_interface.base;
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qemu_spice_add_interface(&sdpy.qxl.base);
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@@ -626,4 +625,5 @@ void qemu_spice_display_init(DisplayState *ds)
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qemu_add_vm_change_state_handler(qemu_spice_vm_change_state_handler, &sdpy);
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qemu_spice_create_host_memslot(&sdpy);
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qemu_spice_create_host_primary(&sdpy);
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+ register_displaychangelistener(ds, &display_listener);
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}
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