APAR status
Closed as program error.
Error description
Error Message: the JVM exits with with vmState <OSB>0x53eff<CSB> vmState <OSB>0x53eff<CSB>: {J9VMSTATE_JIT_CODEGEN} {stringPeepholes} . Stack Trace: j> 12:42:26 Unhandled exception j> 12:42:26 Type=Segmentation error vmState=0x00053eff j> 12:42:26 J9Generic_Signal_Number=00000004 Signal_Number=0000000b Error_Value=00000000 Signal_Code=00000001 j> 12:42:26 Handler1=B6D0EF6A Handler2=B6CB3C27 InaccessibleAddress=0000001E j> 12:42:26 EDI=00000001 ESI=097BC710 EAX=00000004 EBX=B6986DD0 j> 12:42:26 ECX=747D5970 EDX=0924C84C j> 12:42:26 EIP=B672B9C8 ES=007B DS=007B ESP=747D58E0 j> 12:42:26 EFlags=00010202 CS=0073 SS=007B EBP=747D5970 j> 12:42:26 Module=/jtctest/sdk_installs/pxi3280/pxi3280-20120610_01/ibm-jav a-i386-80/jre/lib/i386/default/libj9jit27.so j> 12:42:26 Module_base_address=B6295000 j> 12:42:26 j> 12:42:26 Method_being_compiled=com/ibm/jtc/svt/tests/invoke/BasicTest2.te stVarargsCollector()V j> 12:42:26 Target=2_70_20120609_112918 (Linux 2.6.16.60-0.85.1-bigsmp) j> 12:42:26 CPU=x86 (4 logical CPUs) (0xfd69e000 RAM) j> 12:42:26 ----------- Stack Backtrace ----------- j> 12:42:26 (0xB6CA5100 <OSB>libj9prt27.so+0x10100<CSB>) j> 12:42:26 (0xB6CB4BD2 <OSB>libj9prt27.so+0x1fbd2<CSB>) j> 12:42:26 (0xB6CA4DF1 <OSB>libj9prt27.so+0xfdf1<CSB>) j> 12:42:26 (0xB6CA4EE5 <OSB>libj9prt27.so+0xfee5<CSB>) j> 12:42:26 (0xB6CA49F4 <OSB>libj9prt27.so+0xf9f4<CSB>) j> 12:42:26 (0xB6CB4BD2 <OSB>libj9prt27.so+0x1fbd2<CSB>) j> 12:42:26 (0xB6CA4963 <OSB>libj9prt27.so+0xf963<CSB>) j> 12:42:26 (0xB6D0E395 <OSB>libj9vm27.so+0x20395<CSB>) j> 12:42:26 (0xB6CB4BD2 <OSB>libj9prt27.so+0x1fbd2<CSB>) j> 12:42:26 (0xB6D0E69E <OSB>libj9vm27.so+0x2069e<CSB>) j> 12:42:26 (0xB6D0EFB8 <OSB>libj9vm27.so+0x20fb8<CSB>) j> 12:42:26 (0xB6CB3DF5 <OSB>libj9prt27.so+0x1edf5<CSB>) j> 12:42:26 __kernel_rt_sigreturn+0x0 (0xFFFFE440) j> 12:42:26 (0x097BC76C <OSB><unknown>+0x0<CSB>) .
Local fix
One could disable Stringpeepholes with -Xjit:disableStringpeepholes
Problem summary
the JIT crashes (Unhandled exception, 0x53eff) when java code contains a sequence similar to the following: (new StringBuilder()).append(arg1).append(arg2).toString()
Problem conclusion
This defect will be fixed in: 7.0.0 SR3 6.0.1 SR4 . The jit has been updated to prevent the crash when the optimizer encounters the pattern above.
Temporary fix
Comments
APAR Information
APAR number
IV30269
Reported component name
JIT
Reported component ID
620700124
Reported release
260
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2012-10-15
Closed date
2012-10-15
Last modified date
2012-10-15
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:
15 October 2012