Created attachment 88179 [details]
Full GDB backtrace of crash/buffer overflow

While running Piglit on radeonsi (full graphics stack detailed below) I
encountered an crash in "spec/glsl-1.30/execution/texelFetch fs sampler2D
71x1-71x281". See the attached GDB backtrace and register dump for more
details.

Stack:
GPU: "PITCAIRN" (ChipID = 0x6819)
Linux: 3.11.6
libdrm: 2.4.47
LLVM: SVN:trunk/r193475
libclc: Git:master/4c18120c1a
Mesa: Git:master/64c081e8b7
GLAMOR: Git:master/ba209eeef2
DDX: Git:master/f1dc677e79

Let me know if you need further information.

Note: this might be a duplicate of bug 70913, both seem to call
llvm.SI.imageload.v4i3