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Segmentation fault for Python 3.9 for video
See original GitHub issue🐛 Bug
To Reproduce
Steps to reproduce the behavior:
Build torchvision for the latest version using python 3.9 with the latest pytorch nightly, run pytest -v test/test_video.py.
Output:
vision39 ❯ pytest -v test/test_video.py
================================================================================ test session starts =================================================================================
platform linux -- Python 3.9.1, pytest-6.2.2, py-1.10.0, pluggy-0.12.0 -- /home/eliuriegas/miniconda3/envs/vision39/bin/python
cachedir: .pytest_cache
rootdir: /home/eliuriegas/work/vision
plugins: cov-2.11.1
collected 3 items
test/test_video.py::TestVideo::test_metadata PASSED [ 33%]
test/test_video.py::TestVideo::test_read_video_tensor Fatal Python error: Segmentation fault
Current thread 0x00007f618a834740 (most recent call first):
File "/home/eliuriegas/work/vision/torchvision/io/__init__.py", line 123 in __next__
File "/home/eliuriegas/work/vision/test/test_video.py", line 296 in test_read_video_tensor
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/unittest/case.py", line 550 in _callTestMethod
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/unittest/case.py", line 593 in run
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/unittest/case.py", line 653 in __call__
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/_pytest/unittest.py", line 321 in runtest
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/_pytest/runner.py", line 162 in pytest_runtest_call
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/pluggy/callers.py", line 187 in _multicall
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/pluggy/manager.py", line 78 in <lambda>
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/pluggy/manager.py", line 87 in _hookexec
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/pluggy/hooks.py", line 289 in __call__
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/_pytest/runner.py", line 255 in <lambda>
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/_pytest/runner.py", line 311 in from_call
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/_pytest/runner.py", line 254 in call_runtest_hook
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/_pytest/runner.py", line 215 in call_and_report
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/_pytest/runner.py", line 126 in runtestprotocol
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/_pytest/runner.py", line 109 in pytest_runtest_protocol
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/pluggy/callers.py", line 187 in _multicall
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/pluggy/manager.py", line 78 in <lambda>
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/pluggy/manager.py", line 87 in _hookexec
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/pluggy/hooks.py", line 289 in __call__
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/_pytest/main.py", line 348 in pytest_runtestloop
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/pluggy/callers.py", line 187 in _multicall
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/pluggy/manager.py", line 78 in <lambda>
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/pluggy/manager.py", line 87 in _hookexec
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/pluggy/hooks.py", line 289 in __call__
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/_pytest/main.py", line 323 in _main
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/_pytest/main.py", line 269 in wrap_session
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/_pytest/main.py", line 316 in pytest_cmdline_main
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/pluggy/callers.py", line 187 in _multicall
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/pluggy/manager.py", line 78 in <lambda>
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/pluggy/manager.py", line 87 in _hookexec
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/pluggy/hooks.py", line 289 in __call__
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/_pytest/config/__init__.py", line 162 in main
File "/home/eliuriegas/miniconda3/envs/vision39/lib/python3.9/site-packages/_pytest/config/__init__.py", line 185 in console_main
File "/home/eliuriegas/miniconda3/envs/vision39/bin/pytest", line 11 in <module>
zsh: segmentation fault (core dumped) pytest -v test/test_video.py
Expected behavior
No segmentation fault
Environment
Please copy and paste the output from our environment collection script (or fill out the checklist below manually).
You can get the script and run it with:
wget https://raw.githubusercontent.com/pytorch/pytorch/master/torch/utils/collect_env.py
# For security purposes, please check the contents of collect_env.py before running it.
python collect_env.py
vision39 ❯ python -m torch.utils.collect_env
Collecting environment information...
PyTorch version: 1.8.0
Is debug build: False
CUDA used to build PyTorch: 11.2
ROCM used to build PyTorch: N/A
OS: Fedora release 33 (Thirty Three) (x86_64)
GCC version: (GCC) 10.2.1 20201125 (Red Hat 10.2.1-9)
Clang version: 11.0.0 (Fedora 11.0.0-2.fc33)
CMake version: version 3.18.4
Python version: 3.9 (64-bit runtime)
Is CUDA available: True
CUDA runtime version: Could not collect
GPU models and configuration: GPU 0: Quadro P4000
Nvidia driver version: 460.32.03
cuDNN version: Could not collect
HIP runtime version: N/A
MIOpen runtime version: N/A
Versions of relevant libraries:
[pip3] numpy==1.20.0
[pip3] torch==1.8.0
[pip3] torchvision==0.9.0a0+81d47c3
[conda] blas 2.108 mkl conda-forge
[conda] blas-devel 3.9.0 8_mkl conda-forge
[conda] cudatoolkit 11.2.0 h73cb219_7 conda-forge
[conda] ffmpeg 4.3 hf484d3e_0 pytorch
[conda] libblas 3.9.0 8_mkl conda-forge
[conda] libcblas 3.9.0 8_mkl conda-forge
[conda] liblapack 3.9.0 8_mkl conda-forge
[conda] liblapacke 3.9.0 8_mkl conda-forge
[conda] mkl 2020.4 h726a3e6_304 conda-forge
[conda] mkl-devel 2020.4 ha770c72_305 conda-forge
[conda] mkl-include 2020.4 h726a3e6_304 conda-forge
[conda] numpy 1.20.0 py39hdbf815f_0 conda-forge
[conda] pytorch 1.8.0 py3.9_cuda112_cudnn8.1.0_0 pytorch-test
[conda] torchvision 0.9.0a0+81d47c3 dev_0 <develop>
Additional context
This was found as part of the effort to introduce Python 3.9 to the main branch here: https://github.com/pytorch/vision/pull/3341
Issue Analytics
- State:
- Created 3 years ago
- Comments:10 (7 by maintainers)
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@seemethere for reference, in https://github.com/pytorch/vision/issues/2650#issuecomment-694915626 we found out that the 4.3 version of FFmpeg (which was present in conda unfortunately). Using FFmpeg 4.2 fixes the issue.
I think @seemethere installed the faulty 4.3 FFmpeg version, i.e., the one that had that AVX/SSE bug in assembly