JDK-4995019 : 1.4.2_03 client JIT compiler optimization causing JVM to core
  • Type: Bug
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 1.4.2_03
  • Priority: P1
  • Status: Closed
  • Resolution: Fixed
  • OS: linux_suse_sles_8.2
  • CPU: x86
  • Submitted: 2004-02-14
  • Updated: 2013-11-01
  • Resolved: 2004-05-10
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1.4.2_05 05Fixed
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Description
The client JIT compiler optmization of sun.misc methods results in a client JVM segv. This was discovered on Linux Hotspot 1.4.2_03 client JVM.
###@###.### 2004-02-14

Comments
CONVERTED DATA BugTraq+ Release Management Values COMMIT TO FIX: 1.4.2_05 generic FIXED IN: 1.4.2_05 INTEGRATED IN: 1.4.2_05 VERIFIED IN: 1.4.2_05
2004-06-18

EVALUATION Some people from the CORBA team and I have spent some time trying to reproduce this bug. Several configurations have been tried, including Solaris/SPARC, Solaris/x86, and Linux/x86. On the suggestion of ###@###.###, both debug and product JVMs have been tested on both Solaris platforms (copying libjvm_g.so onto libjvm.so doesn't seem to work on Linux). A .hotspotrc file was placed into build/rename/ee/test/make/ in order to affect the command line arguments for the subordinate VM (where the suspect classes are being loaded) and the client.out.txt and client.err.txt files in build/rename/ee/test/make/gen/corba/copyobject were examined, but no crashes were observed. Flags supplied were equivalent to -verbose:class -XX:+PrintCompilation -Xcomp. A run with -XX:+FullGCALot -XX:FullGCALotInterval=1000 was attempted but this seemed to time out while running rmic in preparation for running the actual test. Upon discussion with the CORBA team it appears that to date the reported crash has only been observed on one machine, the home PC of ###@###.### . This might indicate a hardware or configuration problem although I consider that unlikely. More probably it is the case with his memory configuration that a safepoint and GC are being taken at a PC where we have an incorrect oop map. In order to confirm this we would need to supply more stress options to the subordinate VM and increase the test's timeout interval. The CORBA team will try to get more information on how to reproduce this bug either later or tomorrow and investigation will continue. ###@###.### 2004-02-17 ###@###.### provided a HotSpot build that would halt the VM in the problem case of a non-empty expression stack at a backward branch and this was triggered during the javac compile of some of the stub classes even before the test case itself ran. I'm in the process of modifying these changes so they don't crash the VM so we can see all of the places they occur. ###@###.### 2004-02-18 I reran the test after removing the guarantee and found that it triggered several times while running the javac process that is part of the setup for the test, but not while running the test itself. This indicates that the crash is not due to a known problem in the client compiler. Marking the bug as incomplete until we can get more information about how to reproduce it. Information about how to increase the test's various timeouts would be helpful as we could then run the VM with more stress options. ###@###.### 2004-02-18 Bug has been diagnosed; see comments. ###@###.### 2004-03-12 Bug fix has been submitted to CTE for inclusion in the 1.4.2_05 update release. ###@###.### 2004-03-17
2004-03-12

WORK AROUND Create .hotspot_compiler file with the entries: ClassCopierOrdinaryImpl$13.copy ... ClassCopierOrdinaryImpl$20.copy in it force client JIT compiler to not optimize these methods. ###@###.### 2004-02-14 ###@###.### 2004-02-14
2004-02-14