# coredumpctl gdb 21991
           PID: 21991 (lp_test_blend)
           UID: 250 (portage)
           GID: 250 (portage)
        Signal: 6 (ABRT)
     Timestamp: Thu 2018-05-24 22:35:30 CEST (2h 11min ago)
  Command Line: ./lp_test_blend
    Executable: /var/tmp/portage/media-libs/mesa-18.1.0/work/mesa-18.1.0-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: be046b2b245b48fbbc3a66d40e3cfcc7
    Machine ID: a11f6dbd63d44c20941f9f48a8fbb3e4
      Hostname: T800
       Storage: /var/lib/systemd/coredump/core.lp_test_blend.250.be046b2b245b48fbbc3a66d40e3cfcc7.21991.1527194130000000.lz4
       Message: Process 21991 (lp_test_blend) of user 250 dumped core.
                
                Stack trace of thread 21991:
                #0  0x00000000f62a3580 __libc_signal_restore_set (libc.so.6)
                #1  0x00000000f62a5264 __GI_abort (libc.so.6)
                #2  0x00000000f678c1f8 _ZN4llvm25llvm_unreachable_internalEPKcS1_j (libLLVMSupport.so.5)
                #3  0x00000000002ef220 _ZN4llvm14RuntimeDyldELF22resolvePPC32RelocationERKNS_12SectionEntryEyyjx (libLLVMRuntimeDyld.so.5)
                #4  0x00000000002f0154 _ZN4llvm14RuntimeDyldELF17resolveRelocationERKNS_12SectionEntryEyyjxyj (libLLVMRuntimeDyld.so.5)
                #5  0x00000000002f02ac _ZN4llvm14RuntimeDyldELF17resolveRelocationERKNS_15RelocationEntryEy (libLLVMRuntimeDyld.so.5)
                #6  0x00000000002cf344 _ZN4llvm15RuntimeDyldImpl21resolveRelocationListERKNS_11SmallVectorINS_15RelocationEntryELj64EEEy (libLLVMRuntimeDyld.so.5)
                #7  0x00000000002d51e4 _ZN4llvm15RuntimeDyldImpl18resolveRelocationsEv (libLLVMRuntimeDyld.so.5)
                #8  0x00000000002d55a8 _ZN4llvm11RuntimeDyld18resolveRelocationsEv (libLLVMRuntimeDyld.so.5)
                #9  0x00000000004095cc _ZN4llvm5MCJIT21finalizeLoadedModulesEv (libLLVMMCJIT.so.5)
                #10 0x000000000040bc14 _ZN4llvm5MCJIT14finalizeObjectEv (libLLVMMCJIT.so.5)
                #11 0x00000000003cbd7c LLVMGetPointerToGlobal (libLLVMExecutionEngine.so.5)
                #12 0x00000000007e33bc n/a (/var/tmp/portage/media-libs/mesa-18.1.0/work/mesa-18.1.0-abi_ppc_32.ppc/src/gallium/drivers/llvmpipe/lp_test_blend)

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Reading symbols from /var/tmp/portage/media-libs/mesa-18.1.0/work/mesa-18.1.0-abi_ppc_32.ppc/src/gallium/drivers/llvmpipe/lp_test_blend...done.
[New LWP 21991]
[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  0xf62a3580 in __libc_signal_restore_set (set=0xff8e4308) at ../sysdeps/unix/sysv/linux/nptl-signals.h:80
80	  return INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, set, NULL,