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  1. JDK
  2. JDK-6935821

G1: threads created during marking do not active their SATB queues

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    • gc
    • b02
    • generic
    • generic
    • Not verified

    Backports

      Description

        When a thread is created, its SATB queue is always is initialized with the active field set to false. If a thread is created during a concurrent marking phase, this will cause all updates done by that thread not to be enqueued on SATB buffers. This can result in incomplete marking issues.

        We have investigating marking issues in G1 as part of 6666145 and this is the one that's causing the most failures. See the Evaluation of that CR for a bit more info.

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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-2191028 G1: threads created during marking do not active their SATB queues

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

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-2191240 G1: threads created during marking do not active their SATB queues

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

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-2193593 G1: threads created during marking do not active their SATB queues

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

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-2197990 G1: threads created during marking do not active their SATB queues

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

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-2199940 G1: threads created during marking do not active their SATB queues

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

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-2191029 G1: threads created during marking do not active their SATB queues

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-6666145 G1: marking verification fails

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-6867250 G1: java.lang.ArrayIndexOutOfBoundsException in Win64

            • P3 - Major loss of function.
            • Closed

            Bug - A problem which impairs or prevents the functions of the product. JDK-6980838 G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue

            • P3 - Major loss of function.
            • Closed

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                tonyp Tony Printezis
                tonyp Tony Printezis
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