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xwayland: Don't crash when we get configure notify for destroyed frame windows

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We can get a destroy notify for the frame window after we've removed it
from the hash table.  This turns into a NULL pointer deref when we look up
the window and try to use it for debugging printout.

Fixes the failing xwayland test case.
This commit is contained in:
Kristian Høgsberg 2013-07-04 02:29:32 -04:00
parent 6780073d78
commit 00db2ee5ff
1 changed files with 15 additions and 14 deletions
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29
src/xwayland/window-manager.c
View file

@ -551,6 +551,16 @@ weston_wm_handle_configure_request(struct weston_wm *wm, xcb_generic_event_t *ev
weston_wm_window_schedule_repaint(window);
}
static int
our_resource(struct weston_wm *wm, uint32_t id)
{
const xcb_setup_t *setup;
setup = xcb_get_setup(wm->conn);
return (id & ~setup->resource_id_mask) == setup->resource_id_base;
}
static void
weston_wm_handle_configure_notify(struct weston_wm *wm, xcb_generic_event_t *event)
{
@ -559,14 +569,15 @@ weston_wm_handle_configure_notify(struct weston_wm *wm, xcb_generic_event_t *eve
struct weston_wm_window *window;
int x, y;
window = hash_table_lookup(wm->window_hash, configure_notify->window);
wm_log("XCB_CONFIGURE_NOTIFY (%s window %d) %d,%d @ %dx%d\n",
configure_notify->window == window->id ? "client" : "frame",
wm_log("XCB_CONFIGURE_NOTIFY (window %d) %d,%d @ %dx%d\n",
configure_notify->window,
configure_notify->x, configure_notify->y,
configure_notify->width, configure_notify->height);
if (our_resource(wm, configure_notify->window))
return;
window = hash_table_lookup(wm->window_hash, configure_notify->window);
/* resize falls here */
if (configure_notify->window != window->id)
return;
@ -671,16 +682,6 @@ weston_wm_window_transform(struct wl_listener *listener, void *data)
old_sy = sy;
}
static int
our_resource(struct weston_wm *wm, uint32_t id)
{
const xcb_setup_t *setup;
setup = xcb_get_setup(wm->conn);
return (id & ~setup->resource_id_mask) == setup->resource_id_base;
}
#define ICCCM_WITHDRAWN_STATE 0
#define ICCCM_NORMAL_STATE 1
#define ICCCM_ICONIC_STATE 3