Anthony,
The following sequence crashes F9 guests, when using VNC:
# modprobe cirrusfb
# vbetool post
Results in Floating point exception at:
cirrus_do_copy()
{
depth = s->get_bpp((VGAState *)s) / 8
...
sx = (src % (width * depth)) / depth;
...
}
Problem is that ->get_bpp returns 0.
Following band-aid "fixes it" (coff). I have no idea if its correct
though ?
"vbetool post" corrupts both SDL and VNC displays when using cirrusfb,
but seems a separate problem.
diff --git a/qemu/hw/cirrus_vga.c b/qemu/hw/cirrus_vga.c
index e14ec35..9f860ff 100644
--- a/qemu/hw/cirrus_vga.c
+++ b/qemu/hw/cirrus_vga.c
@@ -709,6 +709,8 @@ static void cirrus_do_copy(CirrusVGAState *s, int dst, int
src, int w, in int notify = 0;
depth = s->get_bpp((VGAState *)s) / 8;
+ if (!depth)
+ depth = 1;
s->get_resolution((VGAState *)s, &width, &height);
/* extra x, y */
-------------------------------------------------------------------------
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