T800 /home/ef # coredumpctl gdb
           PID: 27731 (lp_test_blend)
           UID: 250 (portage)
           GID: 250 (portage)
        Signal: 6 (ABRT)
     Timestamp: Mon 2018-07-02 14:28:21 CEST (29s ago)
  Command Line: ./lp_test_blend
    Executable: /var/tmp/portage/media-libs/mesa-18.1.2/work/mesa-18.1.2-abi_ppc_32.ppc/src/gallium/drivers/llvmpipe/lp_test_blend
 Control Group: /user.slice/user-1000.slice/session-c1.scope
          Unit: session-c1.scope
         Slice: user-1000.slice
       Session: c1
     Owner UID: 1000 (ef)
       Boot ID: f98b1245725f433db65599cf04a8e4f7
    Machine ID: a11f6dbd63d44c20941f9f48a8fbb3e4
      Hostname: T800
       Storage: /var/lib/systemd/coredump/core.lp_test_blend.250.f98b1245725f433db65599cf04a8e4f7.27731.1530534501000000.lz4
       Message: Process 27731 (lp_test_blend) of user 250 dumped core.
                
                Stack trace of thread 27731:
                #0  0x00000000f66e3580 __libc_signal_restore_set (libc.so.6)
                #1  0x00000000f66e5264 __GI_abort (libc.so.6)
                #2  0x00000000f6bcc1f8 _ZN4llvm25llvm_unreachable_internalEPKcS1_j (libLLVMSupport.so.5)
                #3  0x00000000003bc220 _ZN4llvm14RuntimeDyldELF22resolvePPC32RelocationERKNS_12SectionEntryEyyjx (libLLVMRuntimeDyld.so.5)
                #4  0x00000000003bd154 _ZN4llvm14RuntimeDyldELF17resolveRelocationERKNS_12SectionEntryEyyjxyj (libLLVMRuntimeDyld.so.5)
                #5  0x00000000003bd2ac _ZN4llvm14RuntimeDyldELF17resolveRelocationERKNS_15RelocationEntryEy (libLLVMRuntimeDyld.so.5)
                #6  0x000000000039c344 _ZN4llvm15RuntimeDyldImpl21resolveRelocationListERKNS_11SmallVectorINS_15RelocationEntryELj64EEEy (libLLVMRuntimeDyld.so.5)
                #7  0x00000000003a21e4 _ZN4llvm15RuntimeDyldImpl18resolveRelocationsEv (libLLVMRuntimeDyld.so.5)
                #8  0x00000000003a25a8 _ZN4llvm11RuntimeDyld18resolveRelocationsEv (libLLVMRuntimeDyld.so.5)
                #9  0x00000000004d65cc _ZN4llvm5MCJIT21finalizeLoadedModulesEv (libLLVMMCJIT.so.5)
                #10 0x00000000004d8c14 _ZN4llvm5MCJIT14finalizeObjectEv (libLLVMMCJIT.so.5)
                #11 0x0000000000498d7c LLVMGetPointerToGlobal (libLLVMExecutionEngine.so.5)
                #12 0x00000000008b03bc n/a (/var/tmp/portage/media-libs/mesa-18.1.2/work/mesa-18.1.2-abi_ppc_32.ppc/src/gallium/drivers/llvmpipe/lp_test_blend)

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Reading symbols from /var/tmp/portage/media-libs/mesa-18.1.2/work/mesa-18.1.2-abi_ppc_32.ppc/src/gallium/drivers/llvmpipe/lp_test_blend...done.
[New LWP 27731]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/libthread_db.so.1".
Core was generated by `./lp_test_blend'.
Program terminated with signal SIGABRT, Aborted.
#0  0xf66e3580 in __libc_signal_restore_set (set=0xffc01d78) at ../sysdeps/unix/sysv/linux/nptl-signals.h:80
80	  return INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, set, NULL,