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  1. JDK
  2. JDK-8241296

Segfault in JNIHandleBlock::oops_do()

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    • Subcomponent:
    • Resolved In Build:
      b16
    • CPU:
      generic
    • Verification:
      Not verified

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        Description

        We're seeing intermittent SEGVs in JDKs with some newer GCC versions and combinations of options. It turns out that it's a pretty trivial error which has never been noticed before.

        Thread::oops_do() does this:

        void Thread::oops_do(OopClosure* f, CodeBlobClosure* cf) {
          active_handles()->oops_do(f);

        However, there is a window while a Thread is being constructed when active_handles() is NULL. GC can occur during this time period, and it's a matter of luck that we haven't seen this crash before.

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                • Assignee:
                  aph Andrew Haley
                  Reporter:
                  aph Andrew Haley
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                  • Created:
                    Updated:
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