If the client does not support the DesktopResize pseudo-encoding, then
vs->{width,height} may be smaller than ds->{width,height}. dirty_row is
sized according to vs->{width,height}, not ds->{width,height}.
This patch makes sure to bound the update region to vs->{width,height} to
avoid a possible SEGV.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Reported-by: Marcelo Tosatti <mtosatti@redhat.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4502
c046a42c-6fe2-441c-8c8c-
71466251a162
w += (x % 16);
x -= (x % 16);
+ x = MIN(x, vs->width);
+ y = MIN(y, vs->height);
+ w = MIN(x + w, vs->width) - x;
+ h = MIN(y + h, vs->height) - y;
+
for (; y < h; y++)
for (i = 0; i < w; i += 16)
vnc_set_bit(vs->dirty_row[y], (x + i) / 16);