Bug#1117792: segfaulted when remove zoom user stopped sharing the screen

[Bernhard Übelacker]

On Fri, 10 Oct 2025 16:51:04 -0400 Yaroslav Halchenko <debian at onerussian.com> wrote:> Package: libmutter-16-0
> Version: 48.5-1
> Severity: important

>     Oct 10 16:21:36 bilena kernel: gnome-shell[1583928]: segfault at fffffffffffffc48 ip 00007f3cc61059a2 sp 00007ffe3debab80 error 5 in libmutter-16.so.0.0.0[1059a2,7f3cc6068000+1b3000] likely on CPU 4 (core 8, socket 0)
>     Oct 10 16:21:36 bilena kernel: Code: 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 41 56 49 89 ce 41 55 49 89 d5 41 54 41 89 f4 55 48 89 fd 53 48 63 1d f9 e7 1f 00 48 01 fb <48> 8b 7b 08 e8 a5 d6 f6 ff 83 43 34 01 4d 89 f0 4c 89 e9 >


Hello,
if it is of any help, the given bytes lead to following source location:

0x00007ffff73059a2 in meta_window_actor_size_change at ../src/compositor/meta-window-actor.c:1096

https://sources.debian.org/src/mutter/48.5-1/src/compositor/meta-window-actor.c#L1096

1092 {
1093   MetaWindowActorPrivate *priv =
1094     meta_window_actor_get_instance_private (self);
1095   MetaCompositor *compositor = priv->compositor;
1096   MetaPluginManager *plugin_mgr =
1097     meta_compositor_get_plugin_manager (compositor);

    0x00007ffff73059a2 <meta_window_actor_size_change+34>:       48 8b 7b 08             mov    0x8(%rbx),%rdi

Kind regards,
Bernhard