Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb7b416b0 (LWP 10594)]
radeonDestroyBuffer (driDrawPriv=0x8a1c888)
    at /opt/gfx-test//include/drm/radeon_bo.h:136
136         return bo->bom->funcs->bo_unref(bo);
(gdb) bt full
#0  radeonDestroyBuffer (driDrawPriv=0x8a1c888)
    at /opt/gfx-test//include/drm/radeon_bo.h:136
        rfb = (struct radeon_framebuffer *) 0xb7d431d8
#1  0xb77d8618 in radeonDestroyContext (driContextPriv=0x8700438)
    at radeon_common_context.c:237
        radeon = (radeonContextPtr) 0x86f5560
        current = <value optimized out>
        __PRETTY_FUNCTION__ = "radeonDestroyContext"
        __FUNCTION__ = "radeonDestroyContext"
#2  0xb77aa337 in driDestroyContext (pcp=0x8700438) at ../common/dri_util.c:542
No locals.
#3  0xb7b300e9 in __glXDRIcontextDestroy (baseContext=0x87002a0) at glxdri2.c:192
No locals.
#4  0xb7b243b9 in __glXFreeContext (cx=0x87002a0) at glxext.c:182
No locals.
#5  0xb7b2440b in ContextGone (cx=0x0, id=4194328) at glxext.c:110
No locals.
#6  0x0807b822 in FreeResourceByType (id=4194328, type=51, skipFree=0)
    at resource.c:598
        cid = <value optimized out>
        res = (ResourcePtr) 0x870ebf8
        prev = <value optimized out>
        head = <value optimized out>
#7  0xb7b20827 in __glXDisp_DestroyContext (cl=0x86beea0,
    pc=0x86c8018 "\227\004\002") at glxcmds.c:377
        glxc = (__GLXcontext *) 0x87002a0
        err = <value optimized out>
---Type <return> to continue, or q <return> to quit---
#8  0xb7b24740 in __glXDispatch (client=0x86bdb28) at glxext.c:549
        stuff = (xGLXSingleReq *) 0x86c8018
        opcode = 4 '\004'
        retval = 1
#9  0x08090b8f in Dispatch () at dispatch.c:432
        result = <value optimized out>
        client = (ClientPtr) 0x86bdb28
        nready = 0
        start_tick = 400
#10 0x0806932d in main (argc=5, argv=0xbfc2ccc4, envp=Cannot access memory at address 0x8
) at main.c:283
        i = 1
        alwaysCheckForInput = {0, 1}
(gdb)