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qxl/update_area_io: guest_bug on invalid parameters

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Signed-off-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Alon Levy 2012-08-21 13:51:31 +03:00 committed by Gerd Hoffmann
parent 27af778828
commit 511b13e2c9
1 changed files with 12 additions and 0 deletions
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12
hw/qxl.c
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@ -1386,6 +1386,18 @@ async_common:
QXLCookie *cookie = NULL;
QXLRect update = d->ram->update_area;
if (d->ram->update_surface > NUM_SURFACES) {
qxl_set_guest_bug(d, "QXL_IO_UPDATE_AREA: invalid surface id %d\n",
d->ram->update_surface);
return;
}
if (update.left >= update.right || update.top >= update.bottom) {
qxl_set_guest_bug(d,
"QXL_IO_UPDATE_AREA: invalid area (%ux%u)x(%ux%u)\n",
update.left, update.top, update.right, update.bottom);
return;
}
if (async == QXL_ASYNC) {
cookie = qxl_cookie_new(QXL_COOKIE_TYPE_IO,
QXL_IO_UPDATE_AREA_ASYNC);