René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Segfault importing PyTorch on Linux (works on macOS)","articleBody":"  Bug Report:                                                                                                           \n                                                                                                                        \n  Environment:                                                                                                          \n  - GraalPy 25.0.1 (Oracle GraalVM Native)                                                                              \n  - Linux x86_64 (Ubuntu)                                                                                               \n  - PyTorch 2.7.0 (built from source with GraalPy patches)                                                              \n                                                                                                                        \n  Minimal reproducer:                                                                                                   \n  # Download GraalPy 25.0.1 for Linux                                                                                   \n  wget https://github.com/oracle/graalpython/releases/download/graal-25.0.1/graalpy-25.0.1-linux-amd64.tar.gz           \n  tar xzf graalpy-25.0.1-linux-amd64.tar.gz                                                                             \n  ./graalpy-25.0.1-linux-amd64/bin/graalpy -m venv venv                                                                 \n  source venv/bin/activate                                                                                              \n  pip install torch==2.7.0                                                                                              \n  python -c \"import torch._C\"  # SEGFAULT                                                                               \n                                                                                                                        \n  Observed behavior:                                                                                                    \n  Segfault during import torch._C (pybind11 module initialization).                                                     \n                                                                                                                        \n  Key observations:                                                                                                     \n  - Native libraries load successfully via ctypes:                                                                      \n  import ctypes                                                                                                         \n  ctypes.CDLL('.../torch/lib/libtorch_python.so')  # OK                                                                 \n  - Crash occurs only when pybind11 module initializes                                                                  \n  - Same build works on macOS aarch64, crashes on Linux x86_64                                                          \n                                                                                                                        \n  Crash location (from segfault handler):                                                                               \n  com.oracle.svm.truffle.nfi.NativeSignature$ExecuteHelper.ffiCall(NativeSignature.java:157)                            \n  com.oracle.truffle.nfi.backend.libffi.LibFFIContext.executeNative(LibFFIContext.java:179)                             \n                                                                                                                        \n  Full crash output: (truncated)                                                                                        \n  [ [ SegfaultHandler caught a segfault in thread 0x00005e652f536c00 ] ]                                                \n  siginfo: si_signo: 11, si_code: 128, si_addr: 0x0000000000000000                                                      \n                                                                                                                        \n____________________\n\nMorris Meyer - morris@surfworks.energy","author":{"url":"https://github.com/morrismeyer","@type":"Person","name":"morrismeyer"},"datePublished":"2026-01-11T00:54:05.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":11},"url":"https://github.com/589/graalpython/issues/589"}