39 lines
1.5 KiB
Diff
39 lines
1.5 KiB
Diff
From edba707b32d47977e14f576854f61a0c1a569eab Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
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Date: Mon, 28 Jun 2021 12:12:21 +0400
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Subject: [PATCH spice-gtk] Fix potential div0 crash
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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gdk_monitor_get_geometry() may return 0-size, and leads to crash:
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https://bugzilla.redhat.com/show_bug.cgi?id=1941627
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Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
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---
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src/spice-widget.c | 8 +++++---
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1 file changed, 5 insertions(+), 3 deletions(-)
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diff --git a/src/spice-widget.c b/src/spice-widget.c
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index 7ee02a8..afcf45a 100644
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--- a/src/spice-widget.c
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+++ b/src/spice-widget.c
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@@ -1379,9 +1379,11 @@ static void recalc_geometry(GtkWidget *widget)
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width_mm = gdk_monitor_get_width_mm(monitor);
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gdk_monitor_get_geometry(monitor, &geometry);
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/* FIXME: gives wrong results atm: https://gitlab.gnome.org/GNOME/gtk/-/issues/3066 */
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- width_mm = (width_mm * d->ww / geometry.width) / zoom * scale_factor;
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- height_mm = (height_mm * d->wh / geometry.height) / zoom * scale_factor;
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- has_display_mm = true;
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+ if (geometry.width > 0 && geometry.height > 0) {
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+ width_mm = (width_mm * d->ww / geometry.width) / zoom * scale_factor;
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+ height_mm = (height_mm * d->wh / geometry.height) / zoom * scale_factor;
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+ has_display_mm = true;
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+ }
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}
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DISPLAY_DEBUG(display,
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--
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2.29.0
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