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Bug Database
Bug ID: 6826736
Votes 0
Synopsis CMS: core dump with -XX:+UseCompressedOops
Category hotspot:compiler2
Reported Against
Release Fixed hs16(b07), 6u16-rev(b02) (Bug ID:2179891) , 7(b67) (Bug ID:2181146) , 6u18(b01) (Bug ID:2182312)
State 10-Fix Delivered, bug
Priority: 3-Medium
Related Bugs 6695810 , 6851282 , 6860407 , 6868950 , 6869196 , 6870879 , 6871919
Submit Date 06-APR-2009
Description
We get somewhat frequent process crashes with JDK 6_14 b04 running on x4100s -- by frequent, I mean that we are doing 24-hour stress tests, and we will get a failure maybe 20% of the time.

We never get an actual core file, though the hs_err file is attached (the error reported is always the same). I have been unable to reproduce this reliably, or with smaller heaps or less testing time. We have only observed this on our Linux machines (also are testing Solaris x86).
Posted Date : 2009-04-06 15:50:31.0
Work Around
N/A
Evaluation
Not reproducible under test conditions (shared machine lab) or with latest 6u14 fcs candidate.
Posted Date : 2009-05-28 16:22:12.0

The bug has resurfaced, albeit with lower frequency, in testing by submitter; hence reopening investigation.
Posted Date : 2009-06-08 16:18:44.0

The bug reproduces with not only CMS, but also UseParallelGC and (now, with compressed oops!) UseG1GC.
It is now believed that this is a compiler2 optimization issue perhaps related to 6851282.
Posted Date : 2009-07-15 18:29:27.0

http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/5314d85ffd54
Posted Date : 2009-07-23 02:07:16.0

http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/5314d85ffd54
Posted Date : 2009-07-27 02:48:19.0
Comments
  
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Submitted On 10-JUN-2009
paalst
We experience the same with CMS and UseCompressedOops on RedHat Linux. Please let me know if you need my hs_err file.
Java(TM) SE Runtime Environment (build 1.6.0_14-b08)
Java HotSpot(TM) 64-Bit Server VM (build 14.0-b16, mixed mode)



PLEASE NOTE: JDK6 is formerly known as Project Mustang