davidhewitt opened a new issue #18754: URL: https://github.com/apache/incubator-mxnet/issues/18754
## Description I'm attempting to debug a crash observed by a user of PyO3 (https://github.com/PyO3/pyo3/issues/1044) which occurs when `mxnet` is imported. Attempting to use `gdb` (via `rust-gdb` wrapper script) suggests that `mxnet.so` is partially corrupted. `readelf -a` also emits some warnings. Both are pasted below. ### Error Message Errors seen from `readelf -a path/to/libmxnet.so | grep -i warning`: ``` readelf: Warning: Section 0 has an out of range sh_link value of 1179403647 readelf: Warning: Section 1 has an out of range sh_link value of 2381354254 readelf: Warning: Section 2 has an out of range sh_link value of 3825592164 readelf: Warning: Section 3 has an out of range sh_link value of 149717832 readelf: Warning: Section 3 has an out of range sh_info value of 3171257160 readelf: Warning: Section 4 has an out of range sh_link value of 2781517102 readelf: Warning: Section 4 has an out of range sh_info value of 3221398224 readelf: Warning: Section 5 has an out of range sh_link value of 222961676 readelf: Warning: Section 5 has an out of range sh_info value of 2840782096 readelf: Warning: Section 6 has an out of range sh_link value of 536469743 readelf: Warning: Section 7 has an out of range sh_link value of 548555395 readelf: Warning: Section 7 has an out of range sh_info value of 564797439 readelf: Warning: [ 0]: Unexpected value (65794) in info field. readelf: Warning: Size of section 1 is larger than the entire file! readelf: Warning: [ 3]: Expected link to another section in info fieldreadelf: Warning: [ 4]: Expected link to another section in info fieldreadelf: Warning: [ 5]: Expected link to another section in info fieldreadelf: Warning: Size of section 6 is larger than the entire file! readelf: Warning: [ 7]: Expected link to another section in info fieldreadelf: Error: no .dynamic section in the dynamic segment ``` Errors seen from `gdb`: ``` BFD: warning: /home/david/dev/pyo3-scratch/.direnv/python-3.8.2/lib/python3.8/site-packages/mxnet/libmxnet.so has a corrupt section with a size (ff20fb37000000 08) larger than the file size BFD: warning: /home/david/dev/pyo3-scratch/.direnv/python-3.8.2/lib/python3.8/site-packages/mxnet/libmxnet.so has a corrupt section with a size (ff20fb37000000 08) larger than the file size Error while mapping shared library sections: `/home/david/dev/pyo3-scratch/.direnv/python-3.8.2/lib/python3.8/site-packages/mxnet/libmxnet.so': not in executable format: file format not recognized ``` ## To Reproduce Run `readelf -a path/to/libmxnet.so | grep -i warning`. Alternatively request and I can write tutorial how to install & run the linked Rust code under rust-lldb. ## Environment I'm using Ubuntu 20.04 on WSL2. According to pip, `mxnet` was installed via the wheel `mxnet-1.6.0-py2.py3-none-any.whl`. ``` curl --retry 10 -s https://raw.githubusercontent.com/dmlc/gluon-nlp/master/tools/diagnose.py | python ----------Python Info---------- Version : 3.8.2 Compiler : GCC 9.3.0 Build : ('default', 'Apr 27 2020 15:53:34') Arch : ('64bit', 'ELF') ------------Pip Info----------- Version : 20.0.2 Directory : /home/david/dev/pyo3-scratch/.direnv/python-3.8.2/lib/python3.8/site-packages/pip ----------MXNet Info----------- Version : 1.6.0 Directory : /home/david/dev/pyo3-scratch/.direnv/python-3.8.2/lib/python3.8/site-packages/mxnet Num GPUs : 0 Commit Hash : 6eec9da55c5096079355d1f1a5fa58dcf35d6752 ----------System Info---------- Platform : Linux-4.19.104-microsoft-standard-x86_64-with-glibc2.29 system : Linux node : david-laptop release : 4.19.104-microsoft-standard version : #1 SMP Wed Feb 19 06:37:35 UTC 2020 ----------Hardware Info---------- machine : x86_64 processor : x86_64 Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian Address sizes: 39 bits physical, 48 bits virtual CPU(s): 12 On-line CPU(s) list: 0-11 Thread(s) per core: 2 Core(s) per socket: 6 Socket(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 165 Model name: Intel(R) Core(TM) i7-10750H CPU @ 2.60GHz Stepping: 2 CPU MHz: 2592.007 BogoMIPS: 5184.01 Hypervisor vendor: Microsoft Virtualization type: full L1d cache: 192 KiB L1i cache: 192 KiB L2 cache: 1.5 MiB L3 cache: 12 MiB Vulnerability Itlb multihit: KVM: Vulnerable Vulnerability L1tf: Not affected Vulnerability Mds: Not affected Vulnerability Meltdown: Not affected Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization Vulnerability Spectre v2: Mitigation; Enhanced IBRS, IBPB conditional, RSB filling Vulnerability Tsx async abort: Not affected Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdt scp lm constant_tsc rep_good nopl xtopology cpuid pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 movbe popcnt aes xsave avx f 16c rdrand hypervisor lahf_lm abm 3dnowprefetch invpcid_single ssbd ibrs ibpb stibp ibrs_enhanced fsgsbase bmi1 avx2 smep bmi2 erms invpcid rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 xsaves flush_l1d arch_capabilities ----------Network Test---------- Setting timeout: 10 Timing for MXNet: https://github.com/apache/incubator-mxnet, DNS: 0.0236 sec, LOAD: 0.7427 sec. Timing for GluonNLP GitHub: https://github.com/dmlc/gluon-nlp, DNS: 0.0020 sec, LOAD: 0.6102 sec. Timing for GluonNLP: http://gluon-nlp.mxnet.io, DNS: 0.0815 sec, LOAD: 0.5328 sec. Timing for D2L: http://d2l.ai, DNS: 0.0247 sec, LOAD: 0.0889 sec. Timing for D2L (zh-cn): http://zh.d2l.ai, DNS: 0.0254 sec, LOAD: 0.2696 sec. Timing for FashionMNIST: https://repo.mxnet.io/gluon/dataset/fashion-mnist/train-labels-idx1-ubyte.gz, DNS: 0.0943 sec, LOAD: 0.7244 sec. Timing for PYPI: https://pypi.python.org/pypi/pip, DNS: 0.0236 sec, LOAD: 0.5804 sec. Error open Conda: https://repo.continuum.io/pkgs/free/, HTTP Error 403: Forbidden, DNS finished in 0.02408432960510254 sec. ``` ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
