APAR status
Closed as program error.
Error description
Error Message: A SIGSEGV/GPF is received . Stack Trace: {java_lang_J9VMInternals_verifyImpl} <OSB>0x12a82e640<CSB> {java_lang_J9VMInternals_newInstanceImpl} <OSB>0x12a82ec00<CSB> {javaProtectedThreadProc} <OSB>0x12a82f1c0<CSB> {j9sig_protect} <OSB>0x12a82f250<CSB> {javaThreadProc} <OSB>0x12a82f610<CSB> {thread_wrapper} <OSB>0x12a82f690<CSB> {_pthread_body} <OSB>0x12a82f7a0<CSB> .
Local fix
The issue can be avoided by disabling the instrumentation agent which triggers the Hot Code Replacement
Problem summary
The problem is due to a race condition between the completion of class verification and the subsequent hot code replace of the same class by the instrumentation agent. This causes an invalid address to be dereferenced in native code in java.lang.J9VMInternals.verifyImpl() while copying the static constant values
Problem conclusion
This defect will be fixed in: 6.0.1 SR1 6.0.0 SR10 5.0.0 SR13 . The JVM ensures it is operating on the "most recent" version of the class when updating static constant values. . To obtain the fix: Install build 20110909 or later
Temporary fix
Comments
APAR Information
APAR number
IV07414
Reported component name
JAVA 5 J9 COMMO
Reported component ID
620500127
Reported release
500
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2011-09-08
Closed date
2011-09-13
Last modified date
2011-09-13
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
JAVA 5 J9 COMMO
Fixed component ID
620500127
Applicable component levels
R500 PSY
UP
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Document Information
Modified date:
13 September 2011