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  1. JDK
  2. JDK-6722112

CMS: Incorrect encoding of overflown object arrays during concurrent precleaning

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Details

    • Bug
    • Resolution: Fixed
    • P3
    • hs14
    • hs14, 1.4.2_01, 6
    • hotspot
    • gc
    • 1.4.2
    • b03
    • generic, x86, sparc
    • generic, solaris, solaris_9

    Backports

      Description

        Here's the "evaluation" from 6578335 during whose investigation
        this problem was first diagnosed:

        What we were doing is that if we overflowed the marking stack
        when trying to push a newly marked (now grey) object encountered during
        precleaning, we would just dirty the card the object (now marked)
        lay on, with the expectation that a later precleaning pass or the final
        remark phase (which would pick up all remaining dirty cards) would deal
        with the object. But of course in the case of an object _array_,
        preclean/remark would just scrub the dirty pages not the entire array,
        so the part of the object array that protruded off the dirtied page
        on to a possibly clean page would not be scanned and if that part
        contained references to white objects, those would be lost.

        The fix of course is in the case of overflown object arrays,
        to dirty all the pages that the newly marked overflown object array
        lies on when encoding its greyness for the purposes of rescan (by a
        later preclean pass or the subsequent final remark).

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          Issue Links

            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-2166206 CMS: Incorrect encoding of overflown object arrays during concurrent precleaning

            • 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-2166040 CMS: Incorrect encoding of overflown object arrays during concurrent precleaning

            • P3 - Major loss of function.
            • 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-2166041 CMS: Incorrect encoding of overflown object arrays during concurrent precleaning

            • P3 - Major loss of function.
            • 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-2169512 CMS: Incorrect encoding of overflown object arrays during concurrent precleaning

            • P3 - Major loss of function.
            • 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-2169513 CMS: Incorrect encoding of overflown object arrays during concurrent precleaning

            • P3 - Major loss of function.
            • 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-2170226 CMS: Incorrect encoding of overflown object arrays during concurrent precleaning

            • P3 - Major loss of function.
            • 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-2174432 CMS: Incorrect encoding of overflown object arrays during concurrent precleaning

            • P3 - Major loss of function.
            • 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-2174450 CMS: Incorrect encoding of overflown object arrays during concurrent precleaning

            • P3 - Major loss of function.
            • 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-2179173 CMS: Incorrect encoding of overflown object arrays during concurrent precleaning

            • P3 - Major loss of function.
            • 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-2177193 CMS: Incorrect encoding of overflown object arrays during concurrent precleaning

            • P3 - Major loss of function.
            • Closed
            relates to

            Bug - A problem which impairs or prevents the functions of the product. JDK-6578335 CMS: BigApps failure with -XX:CMSInitiatingOccupancyFraction=1 -XX:+CMSMarkStackOverflowALot ...

            • P3 - Major loss of function.
            • Closed

            Bug - A problem which impairs or prevents the functions of the product. JDK-6681372 64-bit VM CompilerThread received SEGV in ciObjectFactory::find_non_perm()

            • P3 - Major loss of function.
            • Closed

            Bug - A problem which impairs or prevents the functions of the product. JDK-6697967 Java core file from Global Server prdgc01a --- 64-bit java process

            • P3 - Major loss of function.
            • Closed

            Bug - A problem which impairs or prevents the functions of the product. JDK-6752632 (audit) apply HSX-11 fix for 6722112 to HSX-12 and HSX-13

            • P3 - Major loss of function.
            • Closed

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                ysr Y. Ramakrishna
                ysr Y. Ramakrishna
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