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  1. JDK
  2. JDK-6883468

C2 compiler enters infinite loop running out of native heap. assertion in PhaseIterGVN::transform

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P2
    • Resolution: Fixed
    • Affects Version/s: 6u16
    • Fix Version/s: hs16
    • Component/s: hotspot
    • Labels:
    • Subcomponent:
    • Resolved In Build:
      b10
    • CPU:
      x86
    • OS:
      linux_redhat_5.2

      Backports

        Description

        C2 compiler enters an infinite loop consuming all native heap and finally
        crashes. This is reproducible with 6u13+ including 6u18b02. 6u01 does
        not have this bug. The issue hence was introduced after 6u01 but before 6u14.

        This bug is reproducible with a non-trivial test case from a customer.
        When running a 6u18b02 fastdebug we get an assertion:

        # Internal Error (/BUILD_AREA/jdk6_18/hotspot/src/share/vm/opto/phaseX.cpp:1015), pid=23563, tid=1911593872
        # Error: assert(loop_count < K,"infinite loop in PhaseIterGVN::transform")
        #
        # JRE version: 6.0_18-b02
        # Java VM: Java HotSpot(TM) Server VM (16.0-b09-fastdebug mixed mode linux-x86 )

        I attach hotspot.log and hs_err_pid23563.log

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                • Assignee:
                  kvn Vladimir Kozlov
                  Reporter:
                  tviessma Thomas Viessmann (Inactive)
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