Program received signal SIGSEGV, Segmentation fault.
0x00007feeb589f4b8 in radeon_bo_ref () from /usr/lib/libdrm_radeon.so.1
(gdb) bt f
#0  0x00007feeb589f4b8 in radeon_bo_ref () from /usr/lib/libdrm_radeon.so.1
No symbol table info available.
#1  0x00007feeb5aecdd2 in radeon_set_pixmap_bo (bo=0x7feebec601c0, pPix=0x7feebf83dab0) at radeon.h:644
        pitch = 0
        priv = 0x7feec019fa30
        bo = 0x7feebec601c0
        pPix = 0x7feebf83dab0
        info = <optimized out>
#2  radeon_dri2_exchange_buffers (back=<optimized out>, back=<optimized out>, front=<optimized out>, front=<optimized out>, draw=<optimized out>) at radeon_dri2.c:777
        front_priv = 0x7feebfc3bbc0
        back_priv = 0x7feebf8349f0
        screen = <optimized out>
        info = <optimized out>
        region = {extents = {x1 = 0, y1 = 0, x2 = 1920, y2 = 1920}, data = 0x0}
        tmp = <optimized out>
#3  0x00007feeb5aed4ab in radeon_dri2_frame_event_handler (scrn=0x7feebeb88f10, seq=6667, usec=117014759, event_data=0x7feec00bbfa0) at radeon_dri2.c:836
        drawable = 0x7feebf8037d0
        status = 0
        swap_type = -1094319680
        region = {extents = {x1 = 124, y1 = 0, x2 = 32750, y2 = 0}, data = 0x7ffda6f256c0}
        __func__ = "radeon_dri2_frame_event_handler"
#4  0x00007feeb5aee6cb 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 = 0x7feec00f9290
        tmp = <optimized out>
#5  0x00007feebbf7a216 in drmHandleEvent () from /usr/lib/libdrm.so.2
No symbol table info available.
#6  0x00007feebcf4d68b in WakeupHandler (result=result@entry=1, pReadmask=pReadmask@entry=0x7feebd3408c0 <LastSelectMask>) at dixutils.c:423
        i = <optimized out>
        j = <optimized out>
#7  0x00007feebd09c993 in WaitForSomething (pClientsReady=pClientsReady@entry=0x7feebf70fcd0) at WaitFor.c:229
        i = 1
        waittime = {tv_sec = 0, tv_usec = 38993}
        wt = 0x7ffda6f25b80
        timeout = <optimized out>
        clientsReadable = {fds_bits = {0 <repeats 16 times>}}
        clientsWritable = {fds_bits = {140663391974496, 140663350504189, 0, 32, 140727404354944, 140663391947456, 140727404354656, 0, 176093659168, 140663391977184, 
            140727404354944, 32, 140663384084944, 140663384886288, 140663384084944, 140663353248608}}
        selecterr = 11
        nready = 0
        devicesReadable = {fds_bits = {0, 5488763436380978944, 140663391947456, 140663391977184, 32, 0, 140663395845120, 140727404354944, 140663391947456, 140663350505966, 24, 
            117014759, 6667, 5488763436380978944, 140663379329056, 0}}
        now = <optimized out>
        someReady = <optimized out>
#8  0x00007feebcf48851 in Dispatch () at dispatch.c:361
        clientReady = 0x7feebf70fcd0
---Type <return> to continue, or q <return> to quit---
        result = <optimized out>
        client = <optimized out>
        nready = <optimized out>
        icheck = 0x7feebd339980 <checkForInput>
        start_tick = <optimized out>
#9  0x00007feebcf4cb4b in dix_main (argc=10, argv=0x7ffda6f25f98, envp=<optimized out>) at main.c:298
        i = <optimized out>
        alwaysCheckForInput = {0, 1}
#10 0x00007feebadf2800 in __libc_start_main () from /usr/lib/libc.so.6
No symbol table info available.
#11 0x00007feebcf37099 in _start ()
No symbol table info available.