Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8289093

BlockLocationPrinter fails to decode addresses with G1

    XMLWordPrintable

Details

    • gc
    • b29

    Backports

      Description

        The BlockLocationPrinter used for decoding/printing addresses in hs_err files may call G1CollectedHeap::block_start on random addresses in the heap.

        Recently, in JDK-8270540 we changed G1's BOT block_start method to reject addresses between top() and end() of a region.

        This causes the hs_err file address decoder to fail, which decreases the usefulness of that hs_err file (it prints something like "error decoding...") and unnecessarily complicates backtraces (i.e. adds lots of additional stack frames to thread's backtraces when this fails).

        Attachments

          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-8289406 BlockLocationPrinter fails to decode addresses with G1

            • 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-8291159 BlockLocationPrinter fails to decode addresses with G1

            • 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-8291344 BlockLocationPrinter fails to decode addresses with G1

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

            Enhancement - null JDK-8270540 G1: Refactor range checking in G1BlockOffsetTablePart::block_start* to asserts

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved
            links to

            Commit Commit openjdk/jdk19/699ad45b

            Review Review openjdk/jdk19/68

            Activity

              People

                tschatzl Thomas Schatzl
                tschatzl Thomas Schatzl
                Votes:
                0 Vote for this issue
                Watchers:
                3 Start watching this issue

                Dates

                  Created:
                  Updated:
                  Resolved: