(gdb) thread apply all bt

Thread 8 (Thread 0x7ffff5102700 (LWP 12526)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55555684bee8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55555684be98, cond=0x55555684bec0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55555684bec0, mutex=0x55555684be98) at pthread_cond_wait.c:655
#3  0x00007ffff570b36b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007ffff570b0d7 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007ffff7f93182 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007ffff7744b1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7ffff6e93700 (LWP 12481)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5555566d9a2c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5555566e0c50, cond=0x5555566d9a00) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x5555566d9a00, mutex=0x5555566e0c50) at pthread_cond_wait.c:655
#3  0x00005555555e5fe3 in threaded_worker ()
--Type <RET> for more, q to quit, c to continue without paging--
#4  0x00005555557e8d3f in thread_wrap ()
#5  0x00007ffff7f93182 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007ffff7744b1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7ffff6ece740 (LWP 12477)):
#0  0x00007ffff00003c0 in ?? ()
#1  0x00007ffff570309a in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#2  0x00007ffff6651545 in ?? () from /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#3  0x00007ffff73b96c2 in ?? () from /usr/lib/x86_64-linux-gnu/libGLX.so.0
#4  0x00007ffff73bb789 in ?? () from /usr/lib/x86_64-linux-gnu/libGLX.so.0
#5  0x00005555557f078b in gfx_ctx_x_set_video_mode ()
#6  0x00005555555c1924 in video_context_driver_set_video_mode.part ()
#7  0x00005555557fb210 in gl2_init ()
#8  0x00005555555cd0ac in drivers_init ()
#9  0x00005555555c7838 in command_event ()
#10 0x000055555578e239 in general_write_handler ()
#11 0x000055555578d2d3 in setting_set_with_string_representation ()
#12 0x000055555578d82a in setting_bool_action_toggle_default ()
#13 0x000055555578db1b in menu_action_handle_setting ()
#14 0x000055555578f52c in menu_setting_set ()
#15 0x0000555555761c82 in menu_entry_action ()
--Type <RET> for more, q to quit, c to continue without paging--
#16 0x00005555557d8c52 in generic_menu_iterate ()
#17 0x0000555555761fe8 in menu_driver_iterate ()
#18 0x00005555555d4fa4 in runloop_check_state ()
#19 0x00005555555d78a1 in runloop_iterate ()
#20 0x00005555555d88c5 in rarch_main ()
#21 0x00007ffff764db6b in __libc_start_main (main=0x5555555ac490 <main>, argc=1, argv=0x7fffffffdf18, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffdf08) at ../csu/libc-start.c:308
#22 0x00005555555acb5a in _start ()