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| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2017-04-06 14:05:11 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2017-04-24 10:12:28 +0200 |
| commit | 6905b93447a42e606dfd126b90f75f4cd3c6fe94 (patch) | |
| tree | df73263fb239fbb502b0ae7730da3b72abc751df | |
| parent | 32c7e0ab755745e961f1772e95cac381cc68769d (diff) | |
console: add same surface replace pre-condition
Catch an invalid state early, before a potential use-after-free. This is
mainly useful for documentation purposes.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20170406120513.638-2-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
| -rw-r--r-- | ui/console.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/ui/console.c b/ui/console.c index 419b098c11..0cbe5033dd 100644 --- a/ui/console.c +++ b/ui/console.c @@ -1538,6 +1538,8 @@ void dpy_gfx_replace_surface(QemuConsole *con, DisplaySurface *old_surface = con->surface; DisplayChangeListener *dcl; + assert(old_surface != surface); + con->surface = surface; QLIST_FOREACH(dcl, &s->listeners, next) { if (con != (dcl->con ? dcl->con : active_console)) { |