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  1. JDK
  2. JDK-8293584

CodeCache::old_nmethods_do incorrectly filters is_unloading nmethods

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Details

    • Bug
    • Status: Resolved
    • P4
    • Resolution: Fixed
    • 20
    • 20
    • hotspot
    • b25

    Description

      Class redefinition needs to scan for all nmethods, including is_unloading ones. If it doesn't, the Method can get nuked and then a concurrent GC will trip on it and crash. The normal iterator used by class redefinition uses the right iterator, but there is an optmized table being used in CodeCache::old_nmethods_do, and it inconsistently does filter is_unloading nmethods, which is a bug.

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          Bug - A problem which impairs or prevents the functions of the product. JDK-8295097 DirectNativeCallWrapper::verify_resolve_call fails with "assert(db != __null && !db->is_adapter_blob()) failed: must use stub!"

          • P2 - Crashes, loss of data, severe memory leak.
          • Closed
          duplicates

          Bug - A problem which impairs or prevents the functions of the product. JDK-8295097 DirectNativeCallWrapper::verify_resolve_call fails with "assert(db != __null && !db->is_adapter_blob()) failed: must use stub!"

          • P2 - Crashes, loss of data, severe memory leak.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8291830 jvmti/RedefineClasses/StressRedefine failed: assert(!is_null(v)) failed: narrow klass value can never be zero

          • P2 - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. JDK-8295097 DirectNativeCallWrapper::verify_resolve_call fails with "assert(db != __null && !db->is_adapter_blob()) failed: must use stub!"

          • P2 - Crashes, loss of data, severe memory leak.
          • Closed
          links to

          Commit Commit openjdk/jdk/08008139

          Review Review openjdk/jdk/11243

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              coleenp Coleen Phillimore
              eosterlund Erik Österlund
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              Dates

                Created:
                Updated:
                Resolved: