larroy commented on issue #14522: mx.nd.Custom conflicts with memory management URL: https://github.com/apache/incubator-mxnet/issues/14522#issuecomment-478124467 In CPU I see a crash in sgemm. I don't see the relation with exceptions in CPU. ``` (lldb) r repro2.py Process 6491 launched: '/Users/pllarroy/devel/mxnet/py3_venv/bin/python' (x86_64) Process 6491 stopped * thread #4, stop reason = EXC_BAD_ACCESS (code=1, address=0xffffffff326c4800) frame #0: 0x0000000113fb3b4d libopenblasp-r0.3.5.dylib`sgemm_beta_HASWELL + 107 libopenblasp-r0.3.5.dylib`sgemm_beta_HASWELL: -> 0x113fb3b4d <+107>: movl $0x0, (%rdx,%rax,4) 0x113fb3b54 <+114>: incq %rax 0x113fb3b57 <+117>: jmp 0x113fb3b42 ; <+96> 0x113fb3b59 <+119>: decq %rsi thread #10, stop reason = EXC_BAD_ACCESS (code=1, address=0xffffffff326c6c78) frame #0: 0x0000000113fb3b4d libopenblasp-r0.3.5.dylib`sgemm_beta_HASWELL + 107 libopenblasp-r0.3.5.dylib`sgemm_beta_HASWELL: -> 0x113fb3b4d <+107>: movl $0x0, (%rdx,%rax,4) 0x113fb3b54 <+114>: incq %rax 0x113fb3b57 <+117>: jmp 0x113fb3b42 ; <+96> 0x113fb3b59 <+119>: decq %rsi thread #11, stop reason = EXC_BAD_ACCESS (code=1, address=0xffffffff326c90ec) frame #0: 0x0000000113fb3b4d libopenblasp-r0.3.5.dylib`sgemm_beta_HASWELL + 107 libopenblasp-r0.3.5.dylib`sgemm_beta_HASWELL: -> 0x113fb3b4d <+107>: movl $0x0, (%rdx,%rax,4) 0x113fb3b54 <+114>: incq %rax 0x113fb3b57 <+117>: jmp 0x113fb3b42 ; <+96> 0x113fb3b59 <+119>: decq %rsi Target 0: (python) stopped. (lldb) ```
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