test_layers fails on LayerNorm

Error

625:       strings: "  File \"/opt/python/cp27-cp27mu/lib/python2.7/unittest/suite.py\", line 108, in run\n    test(result)\n"
625:       strings: "  File \"/opt/python/cp27-cp27mu/lib/pythWARNING:root:param_attr are only avaliable with scale is True
625: WARNING:root:bias_attr are only avaliable with shift is True
625: W1106 08:31:12.824010  8561 init.cc:205] *** Aborted at 1573029072 (unix time) try "date -d @1573029072" if you are using GNU date ***
625: W1106 08:31:12.825037  8561 init.cc:205] PC: @                0x0 (unknown)
625: W1106 08:31:12.825136  8561 init.cc:205] *** SIGSEGV (@0x68) received by PID 8561 (TID 0x7f360eb44700) from PID 104; stack trace: ***
625: W1106 08:31:12.825951  8561 init.cc:205]     @     0x7f360e3167e0 (unknown)
625: W1106 08:31:12.826431  8561 init.cc:205]     @     0x7f35bffd1344 paddle::framework::product()
625: W1106 08:31:12.827142  8561 init.cc:205]     @     0x7f35bec53a0a paddle::operators::LayerNormKernel<>::Compute()
625: W1106 08:31:12.828384  8561 init.cc:205]     @     0x7f35bec54573 _ZNSt17_Function_handlerIFvRKN6paddle9framework16ExecutionContextEEZNKS1_24OpKernelRegistrarFunctorINS0_8platform8CPUPlaceELb0ELm0EINS0_9operators15LayerNormKernelINS7_16CPUDeviceContextEfEENSA_ISB_dEEEEclEPKcSG_iEUlS4_E_E9_M_invokeERKSt9_Any_dataS4_
625: W1106 08:31:12.829479  8561 init.cc:205]     @     0x7f35bff6db99 paddle::imperative::PreparedOp::Run()
625: W1106 08:31:12.830082  8561 init.cc:205]     @     0x7f35beb59a17 paddle::imperative::OpBase::Run()
625: W1106 08:31:12.830565  8561 init.cc:205]     @     0x7f35beb611a3 paddle::imperative::Tracer::TraceOp()
625: W1106 08:31:12.830658  8561 init.cc:205]     @     0x7f35bea4b08d _ZZN8pybind1112cpp_function10initializeIZN6paddle6pybind14BindImperativeEPNS_6moduleEEUlRNS2_10imperative6TracerERKSsRKSt13unordered_mapISsNS_6handleESt4hashISsESt8equal_toISsESaISt4pairIS9_SC_EEESM_SB_ISsN5boost7variantINSN_5blankEifSsSt6vectorIiSaIiEESQ_IfSaIfEESQ_ISsSaISsEEbSQ_IbSaIbEEPNS2_9framework9BlockDescElSQ_IS11_SaIS11_EESQ_IlSaIlEENSN_6detail7variant5void_ES18_S18_S18_S18_S18_S18_EESE_SG_SaISH_IS9_S19_EEERKNS2_8platform8CPUPlaceEbE19_vIS8_SA_SM_SM_S1C_S1G_bEINS_4nameENS_9is_methodENS_7siblingEEEEvOT_PFT0_DpT1_EDpRKT2_ENUlRNS_6detail13function_callEE1_4_FUNES1Y_
625: W1106 08:31:12.830986  8561 init.cc:205]     @     0x7f35be97e501 pybind11::cpp_function::dispatcher()

How to reproduce

Machine: Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz or Intel(R) Xeon(R) CPU E5-2620 v3
- I test it on CI machine and . It works well.
CMake: cmake .. -DWITH_GPU=OFF -DWITH_MKLDNN=ON -DCMAKE_BUILD_TYPE=Release -DWITH_TESTING=ON
command: ctest -R test_layers -V
Develop branch, commitid: a710ccc

625: W1106 08:31:12.826431 8561 init.cc:205] @ 0x7f35bffd1344 paddle::framework::product() 625: W1106 08:31:12.827142 8561 init.cc:205] @ 0x7f35bec53a0a paddle::operators::LayerNormKernel<>::Compute()

(gdb) p scale $1 = (const paddle::framework::Tensor *) 0x0 (gdb) p var $2 = (paddle::framework::Tensor *) 0x268a9b8 (gdb) p bias $3 = (const paddle::framework::Tensor *) 0x0 (gdb) p mean $4 = (paddle::framework::Tensor *) 0x25e3bd8