From: aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Fri, 10 Apr 2009 18:36:38 +0000 (+0000)
Subject: Fix crash on resolution change -> screen dump -> vga redraw (Avi Kivity)
X-Git-Tag: xen-3.4.0-rc2~1^2~2
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=da95f49a9d0bc9597bd2c4ab5a7ee9bea7c4b01d;p=qemu-xen-4.0-testing.git

Fix crash on resolution change -> screen dump -> vga redraw (Avi Kivity)

The vga screen dump function updates last_width and last_height,
but does not change the DisplaySurface that these variables describe.
A consequent vga_draw_graphic() will therefore fail to resize the
surface and crash.

Fix by invalidating the display state after a screen dump, forcing
vga_draw_graphic() to reallocate the DisplaySurface.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10@7069 c046a42c-6fe2-441c-8c8c-71466251a162
---

diff --git a/hw/vga.c b/hw/vga.c
index 2a9f4d9d..709d6bb9 100644
--- a/hw/vga.c
+++ b/hw/vga.c
@@ -2678,4 +2678,5 @@ static void vga_screen_dump(void *opaque, const char *filename)
         vga_screen_dump_graphic(s, filename);
     else
         vga_screen_dump_text(s, filename);
+    vga_invalidate_display(s);
 }