Ceph

build@247e7c628ef2:~/ceph-ubuntu-14.04-build/build$ ./bin/unittest_erasure_code_shec
[==========] Running 71 tests from 1 test case.
[----------] Global test environment set-up.
[----------] 71 tests from ErasureCodeShec
[ RUN ] ErasureCodeShec.init_1
[ OK ] ErasureCodeShec.init_1 (2 ms)
[ RUN ] ErasureCodeShec.init_2
[ OK ] ErasureCodeShec.init_2 (0 ms)
[ RUN ] ErasureCodeShec.init_3
[ OK ] ErasureCodeShec.init_3 (1 ms)
[ RUN ] ErasureCodeShec.init_4

• Caught signal (Illegal instruction)
  in thread 7f2bb6eabd00 thread_name:unittest_erasur
  ceph version 11.0.2-2111-gb3e2719 (b3e2719abddc349e2df6327256c461ba9b779fcc)
  1: (()+0x191282) [0x558167322282]
  2: (()+0x10330) [0x7f2bb6a90330]
  3: (()+0x15cb1) [0x7f2bb6841cb1]
  4: (reed_sol_extended_vandermonde_matrix()+0x12b) [0x7f2bb685cadb]
  5: (reed_sol_big_vandermonde_distribution_matrix()+0x32) [0x7f2bb685cb52]
  6: (reed_sol_vandermonde_coding_matrix()+0x1a) [0x7f2bb685cfaa]
  7: (ErasureCodeShec::shec_reedsolomon_coding_matrix(int)+0xee) [0x7f2bb686213e]
  8: (ErasureCodeShecReedSolomonVandermonde::prepare()+0x233) [0x7f2bb6863473]
  9: (ErasureCodeShec::init(std::map<std::string, std::string, std::less<std::string>, std::allocator<std::pair<std::string const, std::string> > >&, std::ostream*)+0x150) [0x7f2bb6866d60]
  10: (ErasureCodeShec_init_4_Test::TestBody()+0x473) [0x5581672d59f3]
  11: (void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*)+0x33) [0x558167319c73]
  12: (testing::Test::Run()+0xb7) [0x55816730cd27]
  13: (testing::TestInfo::Run()+0x9e) [0x55816730cdce]
  14: (testing::TestCase::Run()+0xa5) [0x55816730ced5]
  15: (testing::internal::UnitTestImpl::RunAllTests()+0x248) [0x55816730d188]
  16: (testing::UnitTest::Run()+0x54) [0x55816730d444]
  17: (main()+0x11c) [0x5581672b4e7c]
  18: (__libc_start_main()+0xf5) [0x7f2bb50caf45]
  19: (()+0x126526) [0x5581672b7526]
  2016-11-30 15:41:29.113094 7f2bb6eabd00 -1 Caught signal (Illegal instruction) *
  in thread 7f2bb6eabd00 thread_name:unittest_erasur

I think it's here

https://github.com/ceph/jerasure/blob/02731df4c1eae1819c4453c9d3ab6d408cadd085/src/galois.c#L262