Dmitri Pivkine

Jenkins compile zLinux jdk18

Jenkins compile zLinux jdk18

Jenkins compile zLinux jdk18

General question: Do we need put `#if JAVA_SPEC_VERSION >= 19` around most changes in GC? Can we just rely on _existence_ of this case for Java 19 only? If it...

@quijote Would you please provide system core(s)? All crashes occurred because of bad O-slot in java thread stack frames. For first two crashes we know there are JIT frames. I...

I have received two cores uploaded to my `/team/Dmitri/15017/` folder. Both of the cores have exactly the same problematic pattern - O-slot in JIT Frame for `com/dynatrace/agent/casp/thirdparty/ComponentClassifier.isIgnoredClass(Lcom/dynatrace/agent/casp/thirdparty/wrapper/ClassWrapper;)Z` points inside (the...

For `core.20220504.140827.18093.0001.dmp` - there is bad O-slot in JIT frame for `com/dynatrace/agent/casp/thirdparty/ComponentClassifier.doesClassNameStartWithIgnoredPackagePrefix(Lcom/dynatrace/agent/casp/thirdparty/wrapper/ClassWrapper;)Z: ``` Failing Thread: !j9vmthread 0x396c00 Failing Thread ID: 0x4703 (18179) gpInfo: J9Generic_Signal_Number=00000018 Signal_Number=0000000b Error_Value=00000000 Signal_Code=00000001 Handler1=00007FBFD0993290 Handler2=00007FBFD06F1150 InaccessibleAddress=0000000000000000...

There is observation GC Check returns thousands of errors `class pointer not in a class segment`. There are many j9 classes look correct (and not unloaded) but have not returned...

please note core in artifacts is generated for: ``` > !gpinfo Failing Thread: !j9vmthread 0x10f809d00 Failing Thread ID: 0xa019a34 (167877172) gpInfo: J9Generic_Signal_Number=00000018 Signal_Number=0000000b Error_Value=00000000 Signal_Code=00000002 Handler1=0000000104EF22BC Handler2=0000000105222E14 InaccessibleAddress=0000000000006798 x0=000000010F809D00 x1=000000010F809D00...

The `!j9object 0x37FD75A90` mentioned in registers is `java/lang/invoke/DirectMethodHandle` ``` x2=000000037FD75A90 > !j9object 0x37FD75A90 !J9Object 0x000000037FD75A90 { struct J9Class* clazz = !j9class 0x110FD3900 // java/lang/invoke/DirectMethodHandle Object flags = 0x00000020; Ljava/lang/invoke/MethodType; type...