Continuing.

Thread 1 "Xorg" received signal SIGSEGV, Segmentation fault.
0x000055ea50c8d055 in __xorg_list_del (prev=0x0, next=0x55ea50ff3820 <bus_info>) at ../include/list.h:184
184	    prev->next = next;
#0  0x000055ea50c8d055 in __xorg_list_del (prev=0x0, next=0x55ea50ff3820 <bus_info>) at ../include/list.h:184
No locals.
#1  0x000055ea50c8d092 in xorg_list_del (entry=0x55ea52a18560) at ../include/list.h:204
No locals.
#2  0x000055ea50c8e8d6 in present_execute (vblank=0x55ea52a18550, ust=57192777481, crtc_msc=3420824) at present.c:707
        window = 0x55ea529d0420
        screen = 0x55ea51c94a20
        screen_priv = 0x55ea517b3440
        mode = 0 '\000'
#3  0x000055ea50c8f198 in present_pixmap (window=0x55ea529d0420, pixmap=0x55ea529d1e20, serial=765, valid=0x0, update=0x0, x_off=0, y_off=0, target_crtc=0x55ea51be9020, wait_fence=0x0, 
    idle_fence=0x55ea529d2030, options=0, window_msc=3420825, divisor=0, remainder=0, notifies=0x0, num_notifies=0) at present.c:956
        ust = 57192777481
        target_msc = 3420824
        crtc_msc = 3420824
        ret = 0
        vblank = 0x55ea52a18550
        tmp = 0x55ea529d0920
        screen = 0x55ea51c94a20
        window_priv = 0x55ea529d0900
        screen_priv = 0x55ea517b3440
#4  0x000055ea50c91421 in proc_present_pixmap (client=0x55ea528a6ed0) at present_request.c:138
        stuff = 0x55ea528b0050
        window = 0x55ea529d0420
        pixmap = 0x55ea529d1e20
        valid = 0x0
        update = 0x0
        wait_fence = 0x0
        idle_fence = 0x55ea529d2030
        target_crtc = 0x0
        ret = 0
        nnotifies = 0
        notifies = 0x0
#5  0x000055ea50c91898 in proc_present_dispatch (client=0x55ea528a6ed0) at present_request.c:251
        stuff = 0x55ea528b0050
#6  0x000055ea50b3959b in Dispatch () at dispatch.c:430
        clientReady = 0x55ea5287dc10
        result = 0
        client = 0x55ea528a6ed0
        nready = 0
        icheck = 0x55ea50ff8460 <checkForInput>
        start_tick = 55
#7  0x000055ea50b48f9d in dix_main (argc=5, argv=0x7ffc4599fe98, envp=0x7ffc4599fec8) at main.c:300
        i = 1
        alwaysCheckForInput = {0, 1}
#8  0x000055ea50b28d39 in main (argc=5, argv=0x7ffc4599fe98, envp=0x7ffc4599fec8) at stubmain.c:34
No locals.
Continuing.
[Thread 0x7fae0f2b5700 (LWP 26020) exited]
[Thread 0x7fae15535700 (LWP 26019) exited]
[Thread 0x7fae15d36700 (LWP 26018) exited]
[Thread 0x7fae16537700 (LWP 26017) exited]
[Inferior 1 (process 26016) exited with code 01]
quit