Program received signal SIGSEGV, Segmentation fault.
radeon_dri2_schedule_flip (front=<optimized out>, back=<optimized out>, target_msc=<optimized out>, data=<optimized out>, func=<optimized out>, draw=<optimized out>, 
    client=<optimized out>, scrn=<optimized out>) at radeon_dri2.c:671
671         return radeon_do_pageflip(scrn, client, bo->handle,
(gdb) bt f
#0  radeon_dri2_schedule_flip (front=<optimized out>, back=<optimized out>, target_msc=<optimized out>, data=<optimized out>, func=<optimized out>, draw=<optimized out>, 
    client=<optimized out>, scrn=<optimized out>) at radeon_dri2.c:671
        crtc = 0x7fe0b6a18c60
        flip_info = 0x7fe0b7439830
#1  radeon_dri2_frame_event_handler (scrn=0x7fe0b5e49f10, seq=14633, usec=249759158, event_data=0x7fe0b743a2b0) at radeon_dri2.c:827
        drawable = 0x7fe0b6b03440
        status = 0
        swap_type = 1587744512
        region = {extents = {x1 = 0, y1 = 0, x2 = 32736, y2 = 0}, data = 0x7ffc5ea311b0}
        __func__ = "radeon_dri2_frame_event_handler"
#2  0x00007fe0acc8275b in radeon_drm_queue_handler (fd=<optimized out>, frame=<optimized out>, sec=<optimized out>, usec=<optimized out>, user_ptr=<optimized out>)
    at radeon_drm_queue.c:67
        user_data = <optimized out>
        e = 0x7fe0b73505f0
        tmp = <optimized out>
#3  0x00007fe0b310e216 in drmHandleEvent () from /usr/lib/libdrm.so.2
No symbol table info available.
#4  0x00007fe0b40e168b in WakeupHandler (result=result@entry=1, pReadmask=pReadmask@entry=0x7fe0b44d48c0 <LastSelectMask>) at dixutils.c:423
        i = <optimized out>
        j = <optimized out>
#5  0x00007fe0b4230993 in WaitForSomething (pClientsReady=pClientsReady@entry=0x7fe0b69d0ea0) at WaitFor.c:229
        i = 1
        waittime = {tv_sec = 0, tv_usec = 525991}
        wt = 0x7ffc5ea31670
        timeout = <optimized out>
        clientsReadable = {fds_bits = {0 <repeats 16 times>}}
        clientsWritable = {fds_bits = {140603114023856, 140603071621885, 0, 32, 140721896233072, 140603114034800, 140721896232784, 0, 158913789984, 140603114054752, 
            140721896233072, 32, 140603106224016, 140603107209424, 140603106224016, 140603074366304}}
        selecterr = 11
        nready = 0
        devicesReadable = {fds_bits = {0, 980708487998239232, 140603114034800, 140603114054752, 32, 0, 140603120252512, 140721896233072, 140603114034800, 140603071623662, 24, 
            249759158, 14633, 980708487998239232, 140603101679648, 0}}
        now = <optimized out>
        someReady = <optimized out>
#6  0x00007fe0b40dc851 in Dispatch () at dispatch.c:361
        clientReady = 0x7fe0b69d0ea0
        result = <optimized out>
        client = <optimized out>
        nready = <optimized out>
        icheck = 0x7fe0b44cd980 <checkForInput>
        start_tick = <optimized out>
#7  0x00007fe0b40e0b4b in dix_main (argc=10, argv=0x7ffc5ea31a88, envp=<optimized out>) at main.c:298
        i = <optimized out>
        alwaysCheckForInput = {0, 1}
#8  0x00007fe0b1f86800 in __libc_start_main () from /usr/lib/libc.so.6
No symbol table info available.
#9  0x00007fe0b40cb099 in _start ()
---Type <return> to continue, or q <return> to quit---
No symbol table info available.