Commit 788fbf04 authored by Gerd Hoffmann's avatar Gerd Hoffmann
Browse files

qxl-render: add sanity check 



Verify dirty rectangle is completely within the primary surface,
just ignore it in case it isn't.

Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
parent 5643fc01

hw/display/qxl-render.c

+6 −0
Original line number Diff line number Diff line
@@ -138,6 +138,12 @@ static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl) 
        if (qemu_spice_rect_is_empty(qxl->dirty+i)) {

            break;

        }

        if (qxl->dirty[i].left > qxl->dirty[i].right ||

            qxl->dirty[i].top > qxl->dirty[i].bottom ||

            qxl->dirty[i].right > qxl->guest_primary.surface.width ||

            qxl->dirty[i].bottom > qxl->guest_primary.surface.height) {

            continue;

        }

        qxl_blit(qxl, qxl->dirty+i);

        dpy_gfx_update(vga->con,

                       qxl->dirty[i].left, qxl->dirty[i].top,