[Mesa-dev] [Bug 73571] New: [clover] OpenCL segfault in gegl 'clones' test

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73571

          Priority: medium
            Bug ID: 73571
          Assignee: mesa-dev at lists.freedesktop.org
           Summary: [clover] OpenCL segfault in gegl 'clones' test
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: jano.vesely at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Other
           Product: Mesa

Created attachment 91998
  --> https://bugs.freedesktop.org/attachment.cgi?id=91998&action=edit
gegl don't askfor cl/gl extensions

The tests/compositions/clones.xml from gegl test suite segfaults when using
mesa OpenCL on Radeon HD 7570 (AMD Turks). I tired running it in gdb, here's
the backtrace:
[New Thread 0x7fffca312700 (LWP 8187)]

Program received signal SIGSEGV, Segmentation fault.
0x00007fffffffc8b0 in ?? ()
(gdb) bt
#0  0x00007fffffffc8b0 in ?? ()
#1  0x00007fffffffc960 in ?? ()
#2  0x00007fffe6238202 in (anonymous
namespace)::InlineSpiller::insertSpill(unsigned int, bool,
llvm::MachineBasicBlock::bundle_iterator<llvm::MachineInstr,
llvm::ilist_iterator<llvm::MachineInstr> >) ()
   from /home/vesely/.local/lib/libLLVMCodeGen.so
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

llvm, clang, mesa, libclc, gegl, babl are all latest git as of today.

Note that I had to patch gegl in order to use OpenCL on mesa at all (it
requires some GL/CL extensions). The patch is attached.

Note that the same test crashes when using intel-ocl too.

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