bug#65811: 27.1; zzzzzzzz forever

[Eli Zaretskii]

> From: Bruce Adams <bruce@optibrium.com>
> CC: "65811@debbugs.gnu.org" <65811@debbugs.gnu.org>
> Date: Fri, 8 Sep 2023 15:10:06 +0000
> 
> I have a backtrace here:
> 
> apt-get changelog emacs
> Get:1 https://changelogs.ubuntu.com emacs 1:27.1+1-3ubuntu5.1 Changelog [113 
> kB]
> Fetched 113 kB in 1s (157 kB/s)
> brucea@Bruce-PC-23:~/work/git/ubuntu-servers$ Connection lost to X server ':0'
> When compiled with GTK, Emacs cannot recover from X disconnects.
> This is a GTK bug: https://gitlab.gnome.org/GNOME/gtk/issues/221
> For details, see etc/PROBLEMS.
> Backtrace:
> emacs(+0x150e55)[0x55b8db8bde55]
> emacs(+0x4aa38)[0x55b8db7b7a38]
> emacs(+0x4af4f)[0x55b8db7b7f4f]
> emacs(+0x49f22)[0x55b8db7b6f22]
> emacs(+0x49ff3)[0x55b8db7b6ff3]
> /lib/x86_64-linux-gnu/libX11.so.6(_XIOError+0x63)[0x7f076d2c82f3]
> /lib/x86_64-linux-gnu/libX11.so.6(_XReply+0x3ef)[0x7f076d2cd56f]
> /lib/x86_64-linux-gnu/libX11.so.6(XGetWindowProperty+0x108)[0x7f076d2ac568]
> /lib/x86_64-linux-gnu/libgdk-3.so.0(+0x781f9)[0x7f076da6a1f9]
> /lib/x86_64-linux-gnu/libgdk-3.so.0(+0x7830e)[0x7f076da6a30e]
> /lib/x86_64-linux-gnu/libgdk-3.so.0(gdk_x11_screen_supports_net_wm_hint+0x8c)[0x7f076da6b4dc]
> /lib/x86_64-linux-gnu/libgdk-3.so.0(+0x7fb4f)[0x7f076da71b4f]
> /lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit_valist+0x1290)[0x7f076d55b700]
> /lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit+0x93)[0x7f076d55b863]
> /lib/x86_64-linux-gnu/libgdk-3.so.0(+0x46966)[0x7f076da38966]
> /lib/x86_64-linux-gnu/libgdk-3.so.0(+0x332ad)[0x7f076da252ad]
> /lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x562c8)[0x7f076d4452c8]
> /lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_context_dispatch+0x174)[0x7f076d444c44]
> /lib/x86_64-linux-gnu/libglib-2.0.so.0(+0xab258)[0x7f076d49a258]
> /lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_context_iteration+0x33)[0x7f076d4423e3]
> /lib/x86_64-linux-gnu/libgtk-3.so.0(gtk_main_iteration+0x19)[0x7f076dd43d99]
> emacs(+0x104fd3)[0x55b8db871fd3]
> emacs(+0x13d3e2)[0x55b8db8aa3e2]
> emacs(+0x13d9d5)[0x55b8db8aa9d5]
> emacs(+0x1f8c95)[0x55b8db965c95]
> emacs(+0x14158f)[0x55b8db8ae58f]
> emacs(+0x143b6a)[0x55b8db8b0b6a]
> emacs(+0x14530c)[0x55b8db8b230c]
> emacs(+0x1b2f67)[0x55b8db91ff67]
> emacs(+0x1360f0)[0x55b8db8a30f0]
> emacs(+0x1b2ea9)[0x55b8db91fea9]
> emacs(+0x13607e)[0x55b8db8a307e]
> emacs(+0x13b68a)[0x55b8db8a868a]
> emacs(+0x13b9c9)[0x55b8db8a89c9]
> emacs(+0x52aca)[0x55b8db7bfaca]
> /lib/x86_64-linux-gnu/libc.so.6(+0x29d90)[0x7f076bc56d90]
> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x80)[0x7f076bc56e40]
> emacs(+0x531b5)[0x55b8db7c01b5]
> 
> [1]+  Aborted                 emacs

Thanks, but those addresses can only be interpreted on your machine.
So either use the method described in the node "Crashing" of the Emacs
user manual, or (better) run Emacs under GDB, and when it crashes and
GDB gets control, type at the GDB prompt:

  (gdb) thread apply all bt

and post here everything that GDB shows in response.