leezu opened a new issue #17829: test_sparse_aggregator fails with memory corruption URL: https://github.com/apache/incubator-mxnet/issues/17829 ## Description double free or corruption. Happened on two unrelated PRs: http://jenkins.mxnet-ci.amazon-ml.com/blue/organizations/jenkins/mxnet-validation%2Fcentos-cpu/detail/PR-17530/32/pipeline/ http://jenkins.mxnet-ci.amazon-ml.com/blue/organizations/jenkins/mxnet-validation%2Fcentos-cpu/detail/PR-17828/6/pipeline/ ### Error Message ``` [2020-03-14T02:19:24.721Z] aggregate sparse ndarray on muliple devices ... *** Error in `python3.6': double free or corruption (fasttop): 0x00007ff19d338360 *** [2020-03-14T02:19:24.721Z] ======= Backtrace: ========= [2020-03-14T02:19:24.721Z] /lib64/libc.so.6(+0x81679)[0x7ff377fb7679] [2020-03-14T02:19:24.721Z] /work/mxnet/python/mxnet/../../build/libmxnet.so(_ZN5mxnet7NDArray17AssignStorageInfoERKSsS2_+0xa4)[0x7ff35c36d284] [2020-03-14T02:19:24.721Z] /work/mxnet/python/mxnet/../../build/libmxnet.so(_ZN5mxnet7kvstore12KVStoreLocal8PullImplERKSt6vectorIiSaIiEERKS2_IPNS_7NDArrayESaIS8_EEib+0x2a7)[0x7ff35c31ce07] [2020-03-14T02:19:24.721Z] /work/mxnet/python/mxnet/../../build/libmxnet.so(_ZN5mxnet7kvstore12KVStoreLocal4PullERKSt6vectorISsSaISsEERKS2_IPNS_7NDArrayESaIS8_EEib+0x8c)[0x7ff35c32c53c] [2020-03-14T02:19:24.721Z] /work/mxnet/python/mxnet/../../build/libmxnet.so(MXKVStorePullWithSparseEx+0xf4)[0x7ff35c111814] [2020-03-14T02:19:24.721Z] /lib64/libffi.so.6(ffi_call_unix64+0x4c)[0x7ff371d7ddcc] [2020-03-14T02:19:24.721Z] /lib64/libffi.so.6(ffi_call+0x1f5)[0x7ff371d7d6f5] [2020-03-14T02:19:24.721Z] /usr/lib64/python3.6/lib-dynload/_ctypes.cpython-36m-x86_64-linux-gnu.so(_ctypes_callproc+0x2a0)[0x7ff371f90600] [2020-03-14T02:19:24.721Z] /usr/lib64/python3.6/lib-dynload/_ctypes.cpython-36m-x86_64-linux-gnu.so(+0x9746)[0x7ff371f89746] [2020-03-14T02:19:24.721Z] /lib64/libpython3.6m.so.1.0(_PyObject_FastCallDict+0x90)[0x7ff378cd1640] ```
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