[Openmp-dev] segmentation fault when starting offload

[Ye Luo via Openmp-dev]

Hi,
I just built the llvm+clang+openmp on 2 workstations.
One of them works fine but the other one cannot even start a toy code.
Any clue what is going on?

Program received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt
#0  0x0000000000000000 in ?? ()
#1  0x00007ffff71cf718 in RTLsTy::LoadRTLs (this=0x7ffff73f82c8 <RTLs>) at
/home/yeluo/opt/llvm-clang/sources/llvm/projects/openmp/libomptarget/src/rtl.cpp:48
#2  0x00007ffff71d7e31 in std::__invoke_impl<void, void (RTLsTy::*)(),
RTLsTy*> (__f=@0x7fffffffda70: (void (RTLsTy::*)(RTLsTy * const))
0x7ffff71cf630 <RTLsTy::LoadRTLs()>,
    __t=@0x7fffffffda68: 0x7ffff73f82c8 <RTLs>) at
/usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/invoke.h:73
#3  0x00007ffff71d7d92 in std::__invoke<void (RTLsTy::*)(), RTLsTy*>
(__fn=@0x7fffffffda70: (void (RTLsTy::*)(RTLsTy * const)) 0x7ffff71cf630
<RTLsTy::LoadRTLs()>,
    __args=@0x7fffffffda68: 0x7ffff73f82c8 <RTLs>) at
/usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/invoke.h:95
#4  0x00007ffff71d7d4c in void std::call_once<void (RTLsTy::*)(),
RTLsTy*>(std::once_flag&, void (RTLsTy::*&&)(),
RTLsTy*&&)::{lambda()#1}::operator()() const (this=0x7fffffffd808)
    at /usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/mutex:672
#5  0x00007ffff71d7d07 in void std::call_once<void (RTLsTy::*)(),
RTLsTy*>(std::once_flag&, void (RTLsTy::*&&)(),
RTLsTy*&&)::{lambda()#2}::operator()() const (this=0x7ffff7dce7b8)
    at /usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/mutex:677
#6  0x00007ffff71d7cd9 in void std::call_once<void (RTLsTy::*)(),
RTLsTy*>(std::once_flag&, void (RTLsTy::*&&)(),
RTLsTy*&&)::{lambda()#2}::__invoke() ()
    at /usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/mutex:677
#7  0x00007ffff6d9e827 in __pthread_once_slow (once_control=0x7ffff73f82c8
<RTLs>, init_routine=0x7ffff7b08760 <__once_proxy>) at pthread_once.c:116
#8  0x00007ffff71d7cab in __gthread_once (__once=0x7ffff73f82c8 <RTLs>,
__func=0x7ffff7b08760 <__once_proxy>)
    at
/usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/x86_64-linux-gnu/c++/8/bits/gthr-default.h:699
#9  0x00007ffff71d06c4 in std::call_once<void (RTLsTy::*)(), RTLsTy*>
(__once=..., __f=@0x7fffffffda70: (void (RTLsTy::*)(RTLsTy * const))
0x7ffff71cf630 <RTLsTy::LoadRTLs()>,
    __args=@0x7fffffffda68: 0x7ffff73f82c8 <RTLs>) at
/usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/mutex:684
#10 0x00007ffff71cff41 in RTLsTy::RegisterLib (this=0x7ffff73f82c8 <RTLs>,
desc=0x4018d0 <.omp_offloading.descriptor>)
    at
/home/yeluo/opt/llvm-clang/sources/llvm/projects/openmp/libomptarget/src/rtl.cpp:191
#11 0x00007ffff71ce13f in __tgt_register_lib (desc=0x4018d0
<.omp_offloading.descriptor>) at
/home/yeluo/opt/llvm-clang/sources/llvm/projects/openmp/libomptarget/src/interface.cpp:74
#12 0x0000000000400d87 in
.omp_offloading.descriptor_reg.nvptx64-nvidia-cuda ()
#13 0x000000000040170d in __libc_csu_init ()
#14 0x00007ffff69bfb28 in __libc_start_main (main=0x400ec0 <main>, argc=1,
argv=0x7fffffffdbf8, init=0x4016c0 <__libc_csu_init>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fffffffdbe8)
    at ../csu/libc-start.c:266
#15 0x0000000000400dfa in _start ()

Ye
===================
Ye Luo, Ph.D.
Computational Science Division & Leadership Computing Facility
Argonne National Laboratory
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