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  1. JDK
  2. JDK-8203354

assert in ClassLoader::update_module_path_entry_list() could have incorrect message

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 11
    • Fix Version/s: 11
    • Component/s: hotspot
    • Labels:
    • Subcomponent:
    • Resolved In Build:
      b16

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        Description

        There's the following assert in ClassLoader::update_module_path_entry_list() for making sure a module path exists.

            assert(ret == 0, "module path must exist");

        For a very long module path with length > 2K, the path exists but os::stat() returns ENAMETOOLONG error on linux.
        int os::stat(const char *path, struct stat *sbuf) {
          char pathbuf[MAX_PATH];
          if (strlen(path) > MAX_PATH - 1) {
            errno = ENAMETOOLONG; <<<<< here
            return -1;
          }
          os::native_path(strcpy(pathbuf, path));
          return ::stat(pathbuf, sbuf);
        }

        The assert should be replaced with an error message and the CDS dumping should be aborted.

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                • Assignee:
                  ccheung Calvin Cheung
                  Reporter:
                  ccheung Calvin Cheung
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                  • Created:
                    Updated:
                    Resolved: