Program terminated with signal SIGABRT, Aborted.
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
51	../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
[Current thread is 1 (Thread 0x7f02a1c97640 (LWP 1692))]
(gdb) bt
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007f02a3f8e2f1 in __GI_abort () at abort.c:79
#2  0x0000561ac318cd4a in OsAbort () at ../../../../os/utils.c:1350
#3  0x0000561ac31928e3 in AbortServer () at ../../../../os/log.c:877
#4  0x0000561ac3193705 in FatalError (f=f@entry=0x561ac31b6610 "Caught signal %d (%s). Server aborting\n") at ../../../../os/log.c:1015
#5  0x0000561ac3189de3 in OsSigHandler (signo=11, sip=<optimized out>, unused=<optimized out>) at ../../../../os/osinit.c:156
#6  <signal handler called>
#7  dixGetPrivate (key=<optimized out>, privates=0xe10020) at ../../../../include/privates.h:136
#8  present_window_priv (window=0xe10000) at ../../../../present/present_priv.h:240
#9  present_send_complete_notify (window=0xe10000, kind=kind@entry=0 '\000', mode=mode@entry=1 '\001', serial=2559, ust=ust@entry=69027894783, msc=2) at ../../../../present/present_event.c:153
#10 0x0000561ac30f1bf0 in present_vblank_notify (vblank=vblank@entry=0x561ac8b05430, kind=kind@entry=0 '\000', mode=mode@entry=1 '\001', ust=ust@entry=69027894783, crtc_msc=2)
    at ../../../../present/present_vblank.c:35
#11 0x0000561ac30f33be in present_wnmd_flip_notify (crtc_msc=<optimized out>, ust=69027894783, vblank=<optimized out>) at ../../../../present/present_wnmd.c:194
#12 present_wnmd_event_notify (window=<optimized out>, event_id=<optimized out>, ust=69027894783, msc=<optimized out>) at ../../../../present/present_wnmd.c:228
#13 0x0000561ac30364e7 in xwl_present_sync_callback (data=0x561ac8b06c10, callback=<optimized out>, time=<optimized out>) at ../../../../../hw/xwayland/xwayland-present.c:282
#14 0x00007f02a3cbdfce in ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
#15 0x00007f02a3cbd93f in ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
#16 0x00007f02a5a4a184 in ?? () from /usr/lib/x86_64-linux-gnu/libwayland-client.so.0
#17 0x00007f02a5a469d9 in ?? () from /usr/lib/x86_64-linux-gnu/libwayland-client.so.0
#18 0x00007f02a5a47ea4 in wl_display_dispatch_queue_pending () from /usr/lib/x86_64-linux-gnu/libwayland-client.so.0
#19 0x0000561ac302c0bb in xwl_read_events (xwl_screen=0x561ac3af3fa0) at ../../../../../hw/xwayland/xwayland.c:820
#20 0x0000561ac318a871 in ospoll_wait (ospoll=0x561ac3ae8f90, timeout=<optimized out>) at ../../../../os/ospoll.c:651
#21 0x0000561ac31839c3 in WaitForSomething (are_ready=0) at ../../../../os/WaitFor.c:207
#22 0x0000561ac3153cc3 in Dispatch () at ../../../../dix/dispatch.c:421
#23 0x0000561ac3157f18 in dix_main (argc=12, argv=0x7ffff811eb58, envp=<optimized out>) at ../../../../dix/main.c:276
#24 0x00007f02a3f79b17 in __libc_start_main (main=0x561ac302b520 <main>, argc=12, argv=0x7ffff811eb58, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, 
    stack_end=0x7ffff811eb48) at ../csu/libc-start.c:310
#25 0x0000561ac302b55a in _start ()
(gdb)