Comment 14 for bug 333748

When the bug repro's on EXA the stack looks like this (obviously no DRI2 stuff in there):

Program received signal SIGSEGV, Segmentation fault.
0x00007ff647512d51 in ?? () from /usr/lib/dri/i965_dri.so
(gdb) bt
#0 0x00007ff647512d51 in ?? () from /usr/lib/dri/i965_dri.so
#1 0x00007ff658ebc936 in __glXForceCurrent (cl=0x3155710, tag=<value optimized
out>, error=0x7fff63eab92c) at ../../glx/glxext.c:394
#2 0x00007ff658ebaaae in DoMakeCurrent (cl=0x3155710, drawId=<value optimized
out>, readId=73400327, contextId=<value optimized out>, tag=1)
    at ../../glx/glxcmds.c:605
#3 0x00007ff658ebcea2 in __glXDispatch (client=0x37b2540) at
../../glx/glxext.c:523
#4 0x000000000044e1d4 in Dispatch () at ../../dix/dispatch.c:437
#5 0x0000000000433c5d in main (argc=10, argv=0x7fff63eabb48, envp=<value
optimized out>) at ../../dix/main.c:397
(gdb) bt full
#0 0x00007ff647512d51 in ?? () from /usr/lib/dri/i965_dri.so
No symbol table info available.
#1 0x00007ff658ebc936 in __glXForceCurrent (cl=0x3155710, tag=<value optimized
out>, error=0x7fff63eab92c) at ../../glx/glxext.c:394
        cx = (__GLXcontext *) 0x708b780
#2 0x00007ff658ebaaae in DoMakeCurrent (cl=0x3155710, drawId=<value optimized
out>, readId=73400327, contextId=<value optimized out>, tag=1)
    at ../../glx/glxcmds.c:605
        client = (ClientPtr) 0x37b2540
        reply = {type = 96 '`', unused = 219 '�', sequenceNumber = 125,
length = 0, contextTag = 0, pad2 = 0, pad3 = 8248216, pad4 = 0,
  pad5 = 1487362742, pad6 = 32758}
        glxc = (__GLXcontext *) 0x64a86d0
        prevglxc = (__GLXcontext *) 0x708b780
        drawPriv = (__GLXdrawable *) 0x21cc350
        readPriv = (__GLXdrawable *) 0x21cc350
        error = <value optimized out>
        mask = <value optimized out>
        __PRETTY_FUNCTION__ = "DoMakeCurrent"
#3 0x00007ff658ebcea2 in __glXDispatch (client=0x37b2540) at
../../glx/glxext.c:523
        stuff = (xGLXSingleReq *) 0x4dc63e8
        opcode = <value optimized out>
        cl = (__GLXclientState *) 0x3155710
        retval = 1
#4 0x000000000044e1d4 in Dispatch () at ../../dix/dispatch.c:437
        result = <value optimized out>
        client = (ClientPtr) 0x37b2540
        nready = 0
        start_tick = 7200
#5 0x0000000000433c5d in main (argc=10, argv=0x7fff63eabb48, envp=<value
optimized out>) at ../../dix/main.c:397
        i = 1
        alwaysCheckForInput = {0, 1}
(gdb)