bug#57011: 29.0.50; Crash when switching to console or plugging in Joystick

[Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Michael Heerdegen <michael_heerdegen@web.de> writes:

> Po Lu <luangruo@yahoo.com> writes:
>
>> Please show an actual backtrace generated by gdb.
>
> Dunno if I tried that correctly - probably not:
>
> | Reading symbols from emacs...
> | SIGINT is used by the debugger.
> | Are you sure you want to change it? (y or n) [answered Y; input not from termin\
> | al]
> | DISPLAY = :0
> | TERM = dumb
> | Breakpoint 2 at 0x18d028: file xterm.c, line 24407.
> | (gdb) run
> | Starting program: /home/micha/software/emacs/src/emacs
> | During startup program terminated with signal SIGSEGV, Segmentation fault.
> | (gdb) xbacktrace
> | You can't do that without a process to debug.
> | (gdb) bt
> | No stack.
> | (gdb)
>
> I always get "During startup program terminated" not matter how long I
> wait.
>
> In the second window I got this:
>
> | (emacs:2719173): dbind-WARNING **: 06:34:54.557: AT-SPI: Error
> | retrieving accessibility bus address:
> | org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was
> | not provided by any .service files
> | Fatal error 11: Segmentation fault
> | Backtrace:
> | /home/micha/software/emacs/src/emacs(+0x1fafc3)[0x55555574efc3]
> | /home/micha/software/emacs/src/emacs(+0x1cc86c)[0x55555572086c]
> | /home/micha/software/emacs/src/emacs(+0x1fa834)[0x55555574e834]
> | /home/micha/software/emacs/src/emacs(+0x1fa809)[0x55555574e809]
> | /home/micha/software/emacs/src/emacs(+0x1fa86f)[0x55555574e86f]
> | /home/micha/software/emacs/src/emacs(+0x1faa0d)[0x55555574ea0d]
> | /lib/x86_64-linux-gnu/libpthread.so.0(+0x14140)[0x7ffff57af140]
> | /home/micha/software/emacs/src/emacs(+0x176faa)[0x5555556cafaa]
> | /home/micha/software/emacs/src/emacs(+0x189734)[0x5555556dd734]
> | /home/micha/software/emacs/src/emacs(+0x17be26)[0x5555556cfe26]
> | /usr/lib/x86_64-linux-gnu/libgdk-3.so.0(+0x6e23f)[0x7ffff757323f]
> | /usr/lib/x86_64-linux-gnu/libgdk-3.so.0(+0x6e63a)[0x7ffff757363a]
> | /usr/lib/x86_64-linux-gnu/libgdk-3.so.0(gdk_display_get_event+0x40)[0x7ffff753ac90]
> | /usr/lib/x86_64-linux-gnu/libgdk-3.so.0(+0x6e2d2)[0x7ffff75732d2]
> | /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_context_dispatch+0x25b)[0x7ffff6f68e6b]
> | /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x52118)[0x7ffff6f69118]
> | /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_context_iteration+0x2f)[0x7ffff6f691cf]
> | /usr/lib/x86_64-linux-gnu/libgtk-3.so.0(gtk_main_iteration+0x15)[0x7ffff7855b15]
> | /home/micha/software/emacs/src/emacs(+0x18ae78)[0x5555556dee78]
> | /home/micha/software/emacs/src/emacs(+0x1e1f8c)[0x555555735f8c]
> | /home/micha/software/emacs/src/emacs(+0x1e2385)[0x555555736385]
> | /home/micha/software/emacs/src/emacs(+0x1e23a4)[0x5555557363a4]
> | /home/micha/software/emacs/src/emacs(+0x292811)[0x5555557e6811]
> | /home/micha/software/emacs/src/emacs(+0x21b308)[0x55555576f308]
> | /home/micha/software/emacs/src/emacs(+0x220a46)[0x555555774a46]
> | /home/micha/software/emacs/src/emacs(+0x295ebc)[0x5555557e9ebc]
> | /home/micha/software/emacs/src/emacs(+0x2e79db)[0x55555583b9db]
> | /home/micha/software/emacs/src/emacs(+0x296174)[0x5555557ea174]
> | /home/micha/software/emacs/src/emacs(+0x2964e8)[0x5555557ea4e8]
> | /home/micha/software/emacs/src/emacs(+0x295a5d)[0x5555557e9a5d]
> | /home/micha/software/emacs/src/emacs(+0x295cb9)[0x5555557e9cb9]
> | /home/micha/software/emacs/src/emacs(+0x294e4f)[0x5555557e8e4f]
> | /home/micha/software/emacs/src/emacs(+0x2960a0)[0x5555557ea0a0]
> | /home/micha/software/emacs/src/emacs(+0x2e79db)[0x55555583b9db]
> | /home/micha/software/emacs/src/emacs(+0x2e6b35)[0x55555583ab35]
> | /home/micha/software/emacs/src/emacs(+0x294825)[0x5555557e8825]
> | /home/micha/software/emacs/src/emacs(+0x2cfb3b)[0x555555823b3b]
> | /home/micha/software/emacs/src/emacs(+0x2cdd54)[0x555555821d54]
> | /home/micha/software/emacs/src/emacs(+0x2948a5)[0x5555557e88a5]
> | /home/micha/software/emacs/src/emacs(+0x2cf34f)[0x55555582334f]
> | /home/micha/software/emacs/src/emacs(+0x2cfb29)[0x555555823b29]
>
> but that is probably not different from what I had posted initially.
>
> Michael.

Try running "coredumpctl debug", and then "bt" from there.

Thanks.