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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"double free or corruption when enable python.IsolateNativeModules","articleBody":"## How to reproduce?\n\n### \u003e environment\ncontainer image: ghcr.io/graalvm/graalpy-community:25\njdk: graalvm-jdk-25_linux-x64_bin.tar.gz\n\n### \u003e python venv deps installed\n`pip install torch transformers patchelf`\n\n### \u003e multi context in maven repo(not packaged as native-image)\n```java\n// Create a new GraalVM Python context and managed by org.apache.commons.pool2.impl.GenericObjectPool\nContext context = GraalPyResources\n        .contextBuilder(Path.of(\"python-resources\"))\n        .option(\"python.IsolateNativeModules\", \"true\")\n        .allowExperimentalOptions(true)\n        .allowIO(IOAccess.ALL)\n        .allowCreateThread(true)\n        .allowCreateProcess(true)\n        .allowHostAccess(HostAccess.ALL)\n        .allowAllAccess(true)\n        .build();\n```\n\n```java\n// use contexts in parallel, scriptPool has 3 context above\nString scriptText = \"\"\n        + \"import torch\\n\"\n        + \"import transformers\\n\"\n        + \"\\n\"\n        + \"def main():\\n\"\n        + \"    print(f'Torch version: {torch.__version__}, Transformers version: {transformers.__version__}')\\n\";\nPythonScriptPool scriptPool = new PythonScriptPool(\"testScript\", scriptText, 3);\njava.util.stream.Stream.iterate(0, n -\u003e n + 1).limit(10).parallel().forEach(n -\u003e {\n    try {\n        scriptPool.executeMethod(\"main\", new Object[] {});\n    } catch (Throwable e) {\n        e.printStackTrace();\n        System.exit(1);\n    }\n});\n```\n\n### \u003e error log\n```\n18:18:13  #14 0.761 WARNING: A restricted method in java.lang.System has been called\n18:18:13  #14 0.761 WARNING: java.lang.System::load has been called by com.oracle.truffle.polyglot.JDKSupport in an unnamed module (file:/app/repo/target/bb-1.0-SNAPSHOT.jar)\n18:18:13  #14 0.761 WARNING: Use --enable-native-access=ALL-UNNAMED to avoid a warning for callers in this module\n18:18:13  #14 0.761 WARNING: Restricted methods will be blocked in a future release unless native access is enabled\n18:18:13  #14 0.761 \n18:18:13  #14 1.081 WARNING: A terminally deprecated method in sun.misc.Unsafe has been called\n18:18:13  #14 1.081 WARNING: sun.misc.Unsafe::objectFieldOffset has been called by com.oracle.truffle.runtime.hotspot.HotSpotTruffleRuntime (file:/app/repo/target/bb-1.0-SNAPSHOT.jar)\n18:18:13  #14 1.081 WARNING: Please consider reporting this to the maintainers of class com.oracle.truffle.runtime.hotspot.HotSpotTruffleRuntime\n18:18:13  #14 1.081 WARNING: sun.misc.Unsafe::objectFieldOffset will be removed in a future release\n18:18:21  #14 8.482 [To redirect Truffle log output to a file use one of the following options:\n18:18:21  #14 8.482 * '--log.file=\u003cpath\u003e' if the option is passed using a guest language launcher.\n18:18:21  #14 8.482 * '-Dpolyglot.log.file=\u003cpath\u003e' if the option is passed using the host Java launcher.\n18:18:21  #14 8.482 * Configure logging using the polyglot embedding API.]\n18:18:21  #14 8.482 [To redirect Truffle log output to a file use one of the following options:\n18:18:21  #14 8.482 * '--log.file=\u003cpath\u003e' if the option is passed using a guest language launcher.\n18:18:21  #14 8.482 * '-Dpolyglot.log.file=\u003cpath\u003e' if the option is passed using the host Java launcher.\n18:18:21  #14 8.482 * Configure logging using the polyglot embedding API.]\n18:18:21  #14 8.482 [To redirect Truffle log output to a file use one of the following options:\n18:18:21  #14 8.482 * '--log.file=\u003cpath\u003e' if the option is passed using a guest language launcher.\n18:18:21  #14 8.482 * '-Dpolyglot.log.file=\u003cpath\u003e' if the option is passed using the host Java launcher.\n18:18:21  #14 8.482 * Configure logging using the polyglot embedding API.]\n18:18:21  #14 8.482 [python::CApiContext] WARNING: Loading C extension module torch._C from '/app/repo/python-resources/venv/lib/python3.12/site-packages/torch/_C.graalpy250-312-native-x86_64-linux.so'. Support for the Python C API is considered experimental. See https://www.graalvm.org/latest/reference-manual/python/Native-Extensions/#embedding-limitations for the limitations. You can suppress this warning by setting the context option 'python.WarnExperimentalFeatures' to 'false'.\n18:18:21  #14 8.482 [python::CApiContext] WARNING: Loading C extension module torch._C from '/app/repo/python-resources/venv/lib/python3.12/site-packages/torch/_C.graalpy250-312-native-x86_64-linux.so'. Support for the Python C API is considered experimental. See https://www.graalvm.org/latest/reference-manual/python/Native-Extensions/#embedding-limitations for the limitations. You can suppress this warning by setting the context option 'python.WarnExperimentalFeatures' to 'false'.\n18:18:21  #14 8.482 [python::CApiContext] WARNING: Loading C extension module torch._C from '/app/repo/python-resources/venv/lib/python3.12/site-packages/torch/_C.graalpy250-312-native-x86_64-linux.so'. Support for the Python C API is considered experimental. See https://www.graalvm.org/latest/reference-manual/python/Native-Extensions/#embedding-limitations for the limitations. You can suppress this warning by setting the context option 'python.WarnExperimentalFeatures' to 'false'.\n18:18:21  #14 8.806 double free or corruption (out)\n18:18:21  #14 8.806 double free or corruption (!prev)\n18:18:21  #14 8.806 #\n18:18:21  #14 8.806 # A fatal error has been detected by the Java Runtime Environment:\n18:18:21  #14 8.806 #\n18:18:21  #14 8.806 #  SIGSEGV (0xb) at pc=0x00007f24b9d9a997, pid=1, tid=52\n18:18:21  #14 8.806 #\n18:18:21  #14 8.806 # JRE version: Java(TM) SE Runtime Environment Oracle GraalVM 25.0.1+8.1 (25.0.1+8) (build 25.0.1+8-LTS-jvmci-b01)\n18:18:21  #14 8.806 # Java VM: Java HotSpot(TM) 64-Bit Server VM Oracle GraalVM 25.0.1+8.1 (25.0.1+8-LTS-jvmci-b01, mixed mode, sharing, tiered, jvmci, jvmci compiler, compressed oops, compressed class ptrs, g1 gc, linux-amd64)\n18:18:21  #14 8.806 # Problematic frame:\n18:18:21  #14 8.806 # C  [libc.so.6+0x28997]  abort+0x174\n18:18:21  #14 8.806 #\n18:18:21  #14 8.806 # Core dump will be written. Default location: /app/repo/core.1\n18:18:21  #14 8.806 #\n18:18:21  #14 8.807 # An error report file with more information is saved as:\n18:18:21  #14 8.807 # /app/repo/hs_err_pid1.log\n18:18:21  #14 8.835 [8.718s][warning][os] Loading hsdis library failed\n18:18:53  #14 39.29 #\n18:18:53  #14 39.29 # If you would like to submit a bug report, please visit:\n18:18:53  #14 39.29 #   https://bugreport.java.com/bugreport/crash.jsp\n18:18:53  #14 39.29 # The crash happened outside the Java Virtual Machine in native code.\n18:18:53  #14 39.29 # See problematic frame for where to report the bug.\n18:18:53  #14 39.29 #\n```\n\n","author":{"url":"https://github.com/suiwenfeng","@type":"Person","name":"suiwenfeng"},"datePublished":"2025-10-28T10:47:55.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/563/graalpython/issues/563"}