[Bug 64201] New: OpenCL usage result segmentation fault on r600g with HD6850.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=64201

          Priority: medium
            Bug ID: 64201
          Assignee: dri-devel at lists.freedesktop.org
           Summary: OpenCL usage result segmentation fault on r600g with
                    HD6850.
          Severity: normal
    Classification: Unclassified
                OS: other
          Reporter: spamjunkeater at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Drivers/Gallium/r600
           Product: Mesa

I am using OpenSUSE 12.3 x86_64 with 3.9 Kernel and ATI 6850HD GPU.

I just experiment OpenCL but I cannot make it with open source tools.

compiled llvm, clang with : ./configure --libdir=/usr/lib64 --prefix=/usr
--enable-{optimized,pic,shared} --disable-{assertions,docs,timestamps}
--enable-targets="x86_64" --enable-experimental-targets="R600"
(for llvm compilation, used http://llvm.org/docs/GettingStarted.html)

And after, compiled mesa-trunk with ./configure --with-gallium-drivers=r600
--prefix=/usr --libdir=/usr/lib64 --enable-{vdpau,texture-float}
--with-dri-drivers="" --enable-{gallium-llvm,r600-llvm-compiler,opencl}
--enable-glx-tls --enable-shared-{glapi,dricore}

but every utility that I tried, gives a segmentation error to me :-/


[ 3453.462803] python[7401]: segfault at 60 ip 00007f55c16292c0 sp
00007fff191b9138 error 4 in pipe_r600.so[7f55c14c0000+299000]
[ 3465.707476] pyrit[7529]: segfault at 0 ip 00007f53614fb7cb sp
00007f535f2bc5c0 error 6 in libLLVM-3.3svn.so[7f5360eb1000+1004000]
[ 3674.192257] cgminer[8773]: segfault at 20 ip 00007f2b65088710 sp
00007fffc1f24908 error 4 in libLLVM-3.3svn.so[7f2b648af000+1004000]


Most detailed report from pyrit, by using it with benchmark argument;

> pyrit benchmark
Pyrit 0.4.1-dev (svn r308) (C) 2008-2011 Lukas Lueg http://pyrit.googlecode.com
This code is distributed under the GNU General Public License v3+

Calibrating... 0x7faf109a72e0: i32 = GlobalAddress<i32 (i32, i32, i32)*
@llvm.AMDGPU.bit.extract.u32.> 0
Undefined function
UNREACHABLE executed at
/run/media/death/OldRoot/temp/llvm/lib/Target/R600/AMDGPUISelLowering.h:56!
Stack dump:
0.    Running pass 'Function Pass Manager' on module 'radeon'.
1.    Running pass 'AMDGPU DAG->DAG Pattern Instruction Selection' on function
'@sha1_process'
Aborted

Regards,
Erdem

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