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backend/session: fix crash on udev device remove event

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libwayland adds phantom listeners here:
d81525a235/src/wayland-server.c (L2378)

Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3982
(cherry picked from commit 406aa5f7f5)
This commit is contained in:
Simon Ser 2025-10-01 16:58:49 +02:00 • committed by Simon Zeni
parent 0d20e46498
commit 761927bbbd
1 changed files with 4 additions and 1 deletions
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5
backend/session/session.c
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@ -367,7 +367,10 @@ void wlr_session_close_file(struct wlr_session *session,
} }
assert(wl_list_empty(&dev->events.change.listener_list)); assert(wl_list_empty(&dev->events.change.listener_list));
assert(wl_list_empty(&dev->events.remove.listener_list)); // TODO: assert that the "remove" listener list is empty as well. Listeners
// will typically call wlr_session_close_file() in response, and
// wl_signal_emit_mutable() installs two phantom listeners, so we'd count
// these two.
close(dev->fd); close(dev->fd);
wl_list_remove(&dev->link); wl_list_remove(&dev->link);