DaaLoadTest_daa1_5m_0 NullPointerException: Cannot read the array length because "magnitude" is null

[JasonFengJ9]

Failure link

From internal Test_openjdk17_j9_sanity.system_x86-64_linux_testList_1 (rtj-ubu24x86-rtp-test-1skal-1)

java version "17.0.15" 2025-04-15
IBM Semeru Runtime Certified Edition 17.0.15.0-rc1 (build 17.0.15+6)
Eclipse OpenJ9 VM 17.0.15.0-rc1 (build v0.51.0-release-31cf5538b0, JRE 17 Linux amd64-64-Bit Compressed References 20250415_957 (JIT enabled, AOT enabled)
OpenJ9   - 31cf5538b0
OMR      - 9bcff94a2
JCL      - 6af0863c3b3 based on jdk-17.0.15+6)

Rerun in Grinder - Change TARGET to run only the failed test targets

Optional info

Failure output (captured from console output)

[2025-05-01T12:42:37.540Z] variation: Mode110
[2025-05-01T12:42:37.540Z] JVM_OPTIONS:  -Xjit -Xgcpolicy:gencon -Xnocompressedrefs 

[2025-05-01T12:43:04.530Z] DLT 05:43:02.688 - Test failed
[2025-05-01T12:43:04.530Z] DLT   Failure num.  = 1
[2025-05-01T12:43:04.530Z] DLT   Test number   = 7
[2025-05-01T12:43:04.530Z] DLT   Test details  = 'JUnit[net.openj9.test.arithmetics.TestPerformance]'
[2025-05-01T12:43:04.530Z] DLT   Suite number  = 0
[2025-05-01T12:43:04.530Z] DLT   Thread number = 1
[2025-05-01T12:43:04.530Z] DLT >>> Captured test output >>>

[2025-05-01T12:43:04.530Z] DLT testStarted : testIntrinsicPerformance(net.openj9.test.arithmetics.TestPerformance)
[2025-05-01T12:43:04.530Z] DLT java.lang.NullPointerException: Cannot read the array length because "magnitude" is null
[2025-05-01T12:43:04.530Z] DLT 	at java.base/java.math.BigInteger.<init>(BigInteger.java:1138)
[2025-05-01T12:43:04.530Z] DLT 	at java.base/java.math.MutableBigInteger.toBigInteger(MutableBigInteger.java:191)
[2025-05-01T12:43:04.530Z] DLT 	at java.base/java.math.BigInteger.smallToString(BigInteger.java:4036)
[2025-05-01T12:43:04.530Z] DLT 	at java.base/java.math.BigInteger.toString(BigInteger.java:4087)
[2025-05-01T12:43:04.530Z] DLT 	at java.base/java.math.BigInteger.toString(BigInteger.java:4106)
[2025-05-01T12:43:04.530Z] DLT 	at java.base/java.math.BigInteger.toString(BigInteger.java:3982)
[2025-05-01T12:43:04.530Z] DLT 	at java.base/java.math.BigInteger.toString(BigInteger.java:4156)
[2025-05-01T12:43:04.530Z] DLT 	at net.openj9.test.Utils.toPrecision(Utils.java:489)
[2025-05-01T12:43:04.530Z] DLT 	at net.openj9.test.arithmetics.TestPerformance.getReferenceValues(TestPerformance.java:433)
[2025-05-01T12:43:04.530Z] DLT 	at net.openj9.test.arithmetics.TestPerformance.testDiv(TestPerformance.java:169)
[2025-05-01T12:43:04.530Z] DLT 	at net.openj9.test.arithmetics.TestPerformance.testIntrinsicPerformance(TestPerformance.java:79)

[2025-05-01T12:43:04.532Z] DLT testFailure: testIntrinsicPerformance(net.openj9.test.arithmetics.TestPerformance): Cannot read the array length because "magnitude" is null
[2025-05-01T12:43:04.532Z] DLT java.lang.NullPointerException: Cannot read the array length because "magnitude" is null
[2025-05-01T12:43:04.532Z] DLT 	at java.base/java.math.BigInteger.<init>(BigInteger.java:1138)
[2025-05-01T12:43:04.532Z] DLT 	at java.base/java.math.MutableBigInteger.toBigInteger(MutableBigInteger.java:191)
[2025-05-01T12:43:04.533Z] DLT 	at java.base/java.math.BigInteger.smallToString(BigInteger.java:4036)

[2025-05-01T12:43:04.541Z] DaaLoadTest_daa1_5m_0_FAILED

50x internal Grinder - passed

[pshipton]

https://openj9-jenkins.osuosl.org/job/Test_openjdk21_j9_extended.system_x86-64_linux_Release_testList_2/46 - 0.51
DaaLoadTest_all_5m_0

08:28:17  DLT testStarted : testIntrinsicPerformance(net.openj9.test.arithmetics.TestPerformance)
08:28:17  DLT java.lang.NullPointerException: Cannot read the array length because "magnitude" is null
08:28:17  DLT 	at java.base/java.math.BigInteger.<init>(BigInteger.java:1145)
08:28:17  DLT 	at java.base/java.math.MutableBigInteger.toBigInteger(MutableBigInteger.java:191)
08:28:17  DLT 	at java.base/java.math.BigInteger.smallToString(BigInteger.java:4166)
08:28:17  DLT 	at java.base/java.math.BigInteger.toString(BigInteger.java:4217)
08:28:17  DLT 	at java.base/java.math.BigInteger.toString(BigInteger.java:4112)
08:28:17  DLT 	at java.base/java.math.BigInteger.toString(BigInteger.java:4286)
08:28:17  DLT 	at openj9.dataaccess/com.ibm.dataaccess.PackedDecimal.putBigInteger(PackedDecimal.java:839)
08:28:17  DLT 	at openj9.dataaccess/com.ibm.dataaccess.PackedDecimal.packedDecimalBinaryOp(PackedDecimal.java:948)
08:28:17  DLT 	at openj9.dataaccess/com.ibm.dataaccess.PackedDecimal.dividePackedDecimal_(PackedDecimal.java:743)
08:28:17  DLT 	at openj9.dataaccess/com.ibm.dataaccess.PackedDecimal.dividePackedDecimal(PackedDecimal.java:735)
08:28:17  DLT 	at net.openj9.test.arithmetics.TestPerformance.testDiv(TestPerformance.java:176)
08:28:17  DLT 	at net.openj9.test.arithmetics.TestPerformance.testIntrinsicPerformance(TestPerformance.java:79)

[pshipton]

https://openj9-jenkins.osuosl.org/job/Test_openjdk21_j9_extended.system_x86-64_linux_Nightly_testList_1/386/
DaaLoadTest_all_5m_1

19:32:20  DLT testStarted : testIntrinsicPerformance(net.openj9.test.arithmetics.TestPerformance)
19:32:20  DLT java.lang.NullPointerException: Cannot read the array length because "magnitude" is null
19:32:20  DLT 	at java.base/java.math.BigInteger.<init>(BigInteger.java:1145)
19:32:20  DLT 	at java.base/java.math.MutableBigInteger.toBigInteger(MutableBigInteger.java:191)
19:32:20  DLT 	at java.base/java.math.BigInteger.smallToString(BigInteger.java:4166)
19:32:20  DLT 	at java.base/java.math.BigInteger.toString(BigInteger.java:4217)
19:32:20  DLT 	at java.base/java.math.BigInteger.toString(BigInteger.java:4112)
19:32:20  DLT 	at java.base/java.math.BigInteger.toString(BigInteger.java:4286)
19:32:20  DLT 	at openj9.dataaccess/com.ibm.dataaccess.PackedDecimal.putBigInteger(PackedDecimal.java:839)
19:32:20  DLT 	at openj9.dataaccess/com.ibm.dataaccess.PackedDecimal.packedDecimalBinaryOp(PackedDecimal.java:948)
19:32:20  DLT 	at openj9.dataaccess/com.ibm.dataaccess.PackedDecimal.dividePackedDecimal_(PackedDecimal.java:743)
19:32:20  DLT 	at openj9.dataaccess/com.ibm.dataaccess.PackedDecimal.dividePackedDecimal(PackedDecimal.java:735)
19:32:20  DLT 	at net.openj9.test.arithmetics.TestPerformance.testDiv(TestPerformance.java:176)
19:32:20  DLT 	at net.openj9.test.arithmetics.TestPerformance.testIntrinsicPerformance(TestPerformance.java:79)

[pshipton]

https://hyc-runtimes-jenkins.swg-devops.com/job/Test_openjdk21_j9_special.system_x86-64_linux_testList_8/198/

[hzongaro]

Saw a slightly different call stack in an internal grinder run - 1/250 failed:

DLT >>> Captured test output >>>
DLT testStarted : testIntrinsicPerformance(net.openj9.test.arithmetics.TestPerformance)
DLT java.lang.NullPointerException: Cannot read the array length because "a" is null
DLT 	at java.base/java.util.Arrays.fill(Arrays.java:3213)
DLT 	at java.base/java.math.MutableBigInteger.getMagnitudeArray(MutableBigInteger.java:165)
DLT 	at java.base/java.math.MutableBigInteger.toBigInteger(MutableBigInteger.java:191)
DLT 	at java.base/java.math.BigInteger.smallToString(BigInteger.java:4166)
DLT 	at java.base/java.math.BigInteger.toString(BigInteger.java:4217)
DLT 	at java.base/java.math.BigInteger.toString(BigInteger.java:4235)
DLT 	at java.base/java.math.BigInteger.toString(BigInteger.java:4112)
DLT 	at java.base/java.math.BigInteger.toString(BigInteger.java:4286)
DLT 	at net.openj9.test.Utils.toPrecision(Utils.java:489)
...

Trying to capture more information with -Xdump, but no luck yet.