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IV19882: SEGMENTATION ERROR DURING JIT COMPILATION

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APAR status

  • Closed as program error.

Error description

  • Error Message: The crash should report a vmState starting with
0x0005, probably 0x000565ff.
Here is an example:
Unhandled exception
Type=Segmentation error vmState=0x000565ff
J9Generic_Signal_Number=00000004 Signal_Number=0000000b
Error_Value=00000000 Signal_Code=00000001
Handler1=00000400009F67F0 Handler2=0000040000AEDC48
R0=0000000000000000 R1=0000040011119A40 R2=0000040001CD3790
R3=000004001465E638
R4=0000000000000000 R5=0000040011119CC0 R6=000004000FAE2C80
R7=00000000003FC200
R8=000000000001FD40 R9=0000000000000100 R10=0000000000000009
R11=0000000000000000
R12=0000000000000058 R13=0000040011126910 R14=0000000000000001
R15=0000000000000000
R16=000000000000000C R17=000004002889E558 R18=0000040029D6E588
R19=0000040029D786E4
R20=00000400284DFDE8 R21=0000040028F5D4C0 R22=0000040001C3D728
R23=0000040001C19000
R24=0000040001C19990 R25=00000000FFFFFFFF R26=0000040050BC3C88
R27=000000003C545910
R28=000004001467E378 R29=000004001465EAC5 R30=0000000000000001
R31=000004001465EAC4
NIP=00000400012CBA60 MSR=800000000280F032
ORIG_GPR3=0000000000000000 CTR=00000400012BCC60
LINK=00000400012CBA28 XER=0000000000000001 CCR=0000000088242288
SOFTE=0000000000000001
TRAP=0000000000000300 DAR=0000040050BC3C88
dsisr=0000000040000000 RESULT=0000000000000000
FPR0 3fe51eb860000000 (f: 1610612736.000000, d: 6.600000e-01)
FPR1 3ff6666666666666 (f: 1717986944.000000, d: 1.400000e+00)
FPR2 409c700000000000 (f: 0.000000, d: 1.820000e+03)
FPR3 40bd4c0000000000 (f: 0.000000, d: 7.500000e+03)
FPR4 0000000000000005 (f: 5.000000, d: 2.470328e-323)
FPR5 4330080000000000 (f: 0.000000, d: 4.512396e+15)
FPR6 4148000000000000 (f: 0.000000, d: 3.145728e+06)
FPR7 c3dfffffffffff83 (f: 4294967296.000000, d: -9.223372e+18)
FPR8 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR9 0000040001deb200 (f: 31371776.000000, d: 2.172939e-311)
FPR10 0000040001deb1f0 (f: 31371760.000000, d: 2.172939e-311)
FPR11 0000040001deb1e0 (f: 31371744.000000, d: 2.172939e-311)
FPR12 0000040001deb1d0 (f: 31371728.000000, d: 2.172939e-311)
FPR13 0000040001dec5a0 (f: 31376800.000000, d: 2.172939e-311)
FPR14 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR15 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR16 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR17 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR18 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR19 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR20 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR21 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR22 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR23 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR24 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR25 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR26 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR27 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR28 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR29 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR30 0000000000000000 (f: 0.000000, d: 0.000000e+00)
FPR31 0000000000000000 (f: 0.000000, d: 0.000000e+00)
Module=/jtctest/sdk_installs/pxp6470sr1/pxp6470sr1-20120128_01/i
bm-java-ppc64-70/jre/lib/ppc64/compressedrefs/libj9jit26.so
Module_base_address=0000040001070000
Method_being_compiled=org/apache/harmony/luni/tests/java/util/Ve
ctorTest.test_ensureCapacityI()V
Target=2_60_20120124_100504 (Linux 2.6.32.46-0.3-ppc64)
CPU=ppc64 (16 logical CPUs) (0x3f9cd0000 RAM)
.
Stack Trace: N/A
.

Local fix

  • -Xjit:disableRedundantMonitorElimination

Problem summary

  • The JIT made an incorrect assumption about its own internal
representation of Java static string constants, erroneously
interpreting one as a static field instead.

Problem conclusion

  • This defect will be fixed in:
7.0.0 SR1
6.0.1 SR2
.
The JIT has been fixed to ensure that it is dealing with a
static field, not a static string constant.

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IV19882
    • 

  • Reported component name
    JIT
    • 

  • Reported component ID
    620700124
    • 

  • Reported release
    260
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2012-04-18
    • 

  • Closed date
    2012-04-18
    • 

  • Last modified date
    2012-04-18
    • 





    

  • APAR is sysrouted FROM one or more of the following:
    

    • 

  • APAR is sysrouted TO one or more of the following:
    

    • 



Fix information


    

  • Fixed component name
    JIT
    • 

  • Fixed component ID
    620700124
    • 



Applicable component levels


    

  • R260  PSY
       UP
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            18 April 2012
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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