IZ73769: JAVA JIT ON PPC - PASSING INCORRECT RETURN ADDRESS TO INTERPRETE R
Closed as program error.
Error Message: SIGSEGV with the $IAR and $LR set to NULL. The $CTR is pointing to jitExitInterpreter0(). . Stack Trace: N/A . The problem results in an random value (but NULL is the most likely) in the $IAR, $LR and $R0. All three registers will contain the same value if this problem is encountered. The $CTR will mostly likely contain a pointer to jitExitInterpreter#(). No accurate stack trace will be provided by any tools (dbx, kca, javacore, etc.) for the crashing thread.
The problem can be avoided by disabling one JIT optimization using the following java command line argument: -Xjit:disableInvariantArgumentPreexistence Using this option will cause a 1-5% performance regression depending on properties of the application that is running.
The JIT would pass an incorrect return address when invoking the Interpreter to execute a Java method that contains at least one long argument. The problem only occurs when a very rare and complex set of runtime conditions exist.
This defect will be fixed in: 6.0.0 SR9 5.0.0 SR12 . The JIT was modified so that this problem will no longer occur. . To obtain the fix: Install build 20100410 or later
Reported component name
JAVA 5 JIT
Reported component ID
Last modified date
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fixed component name
JAVA 5 JIT
Fixed component ID
Applicable component levels
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