LABEL REPORT: lilliput

This report shows bugs with the given label, along with their backporting status.

Report generated: Wed May 07 11:22:04 CEST 2025

Minimal actionable level to display: WAITING

hotspot/compiler

Fix Versions Bug Synopsis
17 18 19 20 21 22 23 24 25
✖ ✖ ✖ ✖ ✖ ✖ ❉ ✖ ✔ JDK-8329757 Crash with fatal error: DEBUG MESSAGE: Fast Unlock lock on stack
✖ ✖ ✖ ✖ ✖ ✖ ✖ ✔ ❉ JDK-8347006 LoadRangeNode floats above array guard in arraycopy intrinsic
✖ ✖ ✖ ✖ ✖ ❉ ✖ ✖ ✔ JDK-8317452 [JVMCI] Export symbols used by lightweight locking to JVMCI compilers.
✖ ✖ ✖ ✖ ✔ ❉ ✖ ✖ ✔ JDK-8316880 AArch64: "stop: Header is not fast-locked" with -XX:-UseLSE since JDK-8315880
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8310662 [Lilliput/JDK17] Fix OptoRuntime::new_array_nozero_C
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8317812 [Lilliput] Make C2 LoadNKlassCompactHeader more robust
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8317954 [Lilliput/JDK21] Make C2 LoadNKlassCompactHeader more robust
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8317957 [Lilliput/JDK17] Make C2 LoadNKlassCompactHeader more robust
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8308172 [Lilliput/JDK17] Revert disabling vzeroupper
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8340901 [Lilliput/JDK21] Disable some vectorization tests
✖ ✖ ✖ ✖ ✔ ❉ ✖ ✖ ✔ JDK-8316179 Use consistent naming for lightweight locking in MacroAssembler
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8302209 [Lilliput] Optimize fix-anon monitor owner path
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8302210 [Lilliput/JDK17] Optimize fix-anon monitor owner path
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8304331 [Lilliput/JDK17] Fix RTM locking
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8304702 [Lilliput/JDK17] Increase size of C2HandleAnonOMOwnerStub on x86
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8308651 [Lilliput/JDK17] Cherry-pick PPC parts of 8297036: Generalize C2 stub mechanism
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8308680 [Lilliput/JDK17] Add missing LoadKlassStub skeletons
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8310742 [Lilliput/JDK17] Revert JVMCI _metadata field removal
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8312095 [Lilliput/JDK17] Reinstate use of BiasedLockingCounters
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8314130 [Lilliput] Make loadNKlassCompactHeaders not use a TEMP register
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8314131 [Lilliput/JDK17] Make loadNKlassCompactHeaders not use a TEMP register
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8319185 [Lilliput] Enable and fix vectorization tests

hotspot/gc

Fix Versions Bug Synopsis
17 18 19 20 21 22 23 24 25
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8303027 [Lilliput/JDK17] Correctly resolve forwarded objects in G1 heap iteration
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8314863 [Lilliput] Revert changes in zRelocate, prevent ZGC with Lilliput
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8314894 [Lilliput/JDK17] Revert changes in zRelocate, prevent ZGC with Lilliput
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8319724 [Lilliput] ParallelGC: Forwarded objects found during heap inspection
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8353849 [Lilliput] Avoid race in compact identity hashcode
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8304410 [Lilliput/JDK17] Remove unneeded code in ContiguousSpace::object_iterate_from()
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8306122 [Lilliput] Refactor full GC forwarding
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8307392 [Lilliput] Revert deflation of dead object's monitors
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8308423 [Lilliput/JDK17] Cherry-pick GC forwarding
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8310042 [Lilliput/JDK17] ZGC fixes and cleanups
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8310156 [Lilliput/JDK17] Specialize full-GC loops
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8310642 [Lilliput/JDK17] Remove unnecessary check in G1ParScanThreadState
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8310733 [Lilliput/JDK17] Enter object_iterate_impl() RESOLVE path only when +UCOH
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8310944 [Lilliput/JDK17] Streamline and cleanup GC code
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8315046 [Lilliput/JDK21] Cherry-pick: 8305896: Alternative full GC forwarding
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8316108 [Lilliput/JDK21] Cherry-pick: 8305898: Alternative self-forwarding mechanism
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8346011 [Lilliput] Compact Full-GC Forwarding
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8347711 [Lilliput] Parallel GC support for compact identity hashcode
✖ ❉ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-4718400 Many quantities are held as signed that should be unsigned
✖ ✖ ✖ ✖ ✔ ❉ ✖ ✖ ✔ JDK-8319376 ParallelGC: Forwarded objects found during heap inspection

hotspot/jfr

Fix Versions Bug Synopsis
17 18 19 20 21 22 23 24 25
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8308296 [Lilliput/JDK17] Cherry-pick: 8275415: Prepare Leak Profiler for Lilliput
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8312606 [Lilliput/JDK17] Cherry-pick: 8276333: jdk/jfr/event/oldobject/TestLargeRootSet.java failed "assert(!contains(edge->reference())) failed: invariant"

hotspot/jvmti

Fix Versions Bug Synopsis
17 18 19 20 21 22 23 24 25
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8307764 [Lilliput/JDK17] Fix JVMTI GetObjectMonitorUsage()
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8308411 [Lilliput/JDK17] Cherry-pick: 8283710: JVMTI: Use BitSet for object marking
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8310534 [Lilliput/JDK17] Shenandoah/JVMTI heap-walk crashes

hotspot/runtime

Fix Versions Bug Synopsis
17 18 19 20 21 22 23 24 25
✖ ✖ ✖ ✖ ✖ ✖ ❉ ✖ ✔ JDK-8324881 ObjectSynchronizer::inflate(Thread* current...) is invoked for non-current thread
✖ ✖ ✖ ✖ ✖ ❉ ✖ ✖ ✔ JDK-8318015 Lock inflation not needed for OSR or Deopt for new locking modes
✔ ✖ ✖ ✖ ✔ ❉ ✖ ✖ ✔ JDK-8316746 Top of lock-stack does not match the unlocked object
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8311866 [Lilliput/JDK17] Disallow accessing oop metadata vmStructs with +UCOH
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8340906 [Lilliput/JDK21] Fix CDS related issues
✖ ✖ ✖ ✖ ✔ ❉ ✖ ✖ ✔ JDK-8317262 LockStack::contains(oop) fails "assert(t->is_Java_thread()) failed: incorrect cast to JavaThread"
✖ ✖ ✖ ✖ ✖ ✖ ❉ ✖ ✔ JDK-8331098 [Aarch64] Fix crash in Arrays.equals() intrinsic with -CCP
✖ ✖ ✖ ✖ ✖ ✖ ✖ ❉ ✔ JDK-8342826 Improve performance of oopDesc::klass() after JDK-8305895
✖ ✖ ✖ ✖ ✖ ✖ ✖ ❉ ✔ JDK-8341553 Remove UseCompactObjectHeaders extra CDS archives
✖ ✖ ✖ ✖ ✖ ✖ ✖ ❉ ✔ JDK-8344363 FullGCForwarding::initialize_flags is called after ObjLayout::initialize
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8308956 [Lilliput/JDK17] Fix some object initialization paths
✖ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8318895 Deoptimization results in incorrect lightweight locking stack
✖ ✖ ✖ ✖ ✔ ❉ ✖ ✖ ✔ JDK-8316735 Print LockStack in hs_err files
✖ ✖ ✖ ✖ ✔ ❉ ✖ ✖ ✔ JDK-8319897 Move StackWatermark handling out of LockStack::contains
✖ ✖ ✖ ✖ ✖ ❉ ✖ ✖ ✔ JDK-8319778 Remove unreachable code in ObjectSynchronizer::exit
✖ ✖ ✖ ✖ ✔ ✖ ❉ ✖ ✔ JDK-8319773 Avoid inflating monitors when installing hash codes for LM_LIGHTWEIGHT
✖ ✖ ✖ ✖ ✖ ✖ ❉ ✖ ✔ JDK-8319797 Recursive lightweight locking: Runtime implementation
✖ ✖ ✖ ✖ ✖ ✖ ❉ ✖ ✔ JDK-8319799 Recursive lightweight locking: x86 implementation
✖ ✖ ✖ ✖ ✖ ✖ ❉ ✖ ✔ JDK-8319801 Recursive lightweight locking: aarch64 implementation
✖ ✖ ✖ ✖ ✔ ✖ ❉ ✖ ✔ JDK-8330849 Add test to verify memory usage with recursive locking
✖ ✖ ✖ ✖ ✖ ✖ ✖ ❉ ✔ JDK-8338929 Make Metaspace::deallocate space-aware
✖ ✖ ✖ ✖ ✖ ✖ ✖ ❉ ✔ JDK-8338526 Don't store abstract and interface Klasses in class metaspace
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8302065 [Lilliput] Cleanups and touch-ups
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8303450 [Lilliput/JDK17] Runtime flag to enable Lilliput
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8303769 [Lilliput] Fix interpreter asymmetric fast-locking
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8303771 [Lilliput/JDK17] Fix interpreter asymmetric fast-locking
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8303813 [Lilliput] (AArch64) Use tbz instead of tst and br in load_klass()
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8304329 [Lilliput/JDK17] Fix DiagnoseSyncOnValueBasedClasses
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8307002 [Lilliput] [Metaspace] Make use of Klass alignment gaps
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8307737 [Lilliput] Reduce number of loads used for Klass decoding in static code
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8307991 [Lilliput] Use narrow i-hash only when +UseCompactObjectHeaders
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8308011 [Lilliput/JDK17] Use narrow i-hash only when +UseCompactObjectHeaders
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8308107 [Lilliput/JDK17] Cherry-pick: 8291555: Implement alternative fast-locking scheme
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8308641 [Lilliput/JDK17] Remove wrong assert in klass.hpp
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8308647 [Lilliput/JDK17] Fix cross-builds
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8311875 [Lilliput] Disallow accessing oop metadata vmStructs with +UCOH
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8314485 [Lilliput/JDK21] Cherry-pick: 8139457: Array bases are aligned at HeapWord granularity
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8315047 [Lilliput/JDK21] Some additions to 8139457: Array bases are aligned at HeapWord granularity
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8316126 [Lilliput/JDK21] Cherry-pick: 8305895: Implementation: JEP 450: Compact Object Headers (Experimental)
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8316687 [Lilliput/JDK21] Various cleanups
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8317352 [Lilliput] Sync with upstreaming PRs
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8318011 [Lilliput] Fix CDS narrowKlass encoding
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8319524 [Lilliput] Only warn when compact headers are explicitly enabled
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8320761 [Lilliput] Implement compact identity hashcode
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8326750 Lilliput: OMWorld Tasks
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8326752 Lilliput: OMCache: Add cache lookup unrolling
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8326753 Lilliput: OMCache: Use AoS
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8326761 Lilliput: OMWorld: Fix invalid markWord transition
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8326823 Lilliput: OMWorld: Separate NMT category
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8328886 Lilliput: Build COH archives
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8330631 Lilliput: Modify runtime/CompressedOops/CompressedClassPointers for tinycp
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8347710 [Lilliput] Implement 4 byte headers
✖ ✖ ✖ ✖ ❉ ✖ ✖ ✖ ✔ JDK-8307236 Rendezvous GC threads under STS for monitor deflation
✖ ✖ ✖ ✖ ✔ ❉ ✖ ✖ ✔ JDK-8316958 Add test for unstructured locking
✖ ✖ ✖ ✖ ✖ ✖ ❉ ✖ ✔ JDK-8139457 Relax alignment of array elements
✖ ✖ ✖ ✖ ✖ ✖ ✖ ❉ ✔ JDK-8305895 Implement JEP 450: Compact Object Headers (Experimental)

hotspot/svc-agent

Fix Versions Bug Synopsis
17 18 19 20 21 22 23 24 25
✖ ✖ ✖ ✖ ✔ ❉ ✖ ✖ ✔ JDK-8316401 sun/tools/jhsdb/JStackStressTest.java failed with "InternalError: We should have found a thread that owns the anonymous lock"
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8310010 [Lilliput] SA: Fix oop array element alignment
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8312171 [Lilliput/JDK17] Fix oop array element alignment
✖ ✖ ✖ ✖ ✖ ❉ ✖ ✖ ✔ JDK-8316417 ObjectMonitorIterator does not return the most recent monitor and is incorrect if no monitors exists

hotspot/test

Fix Versions Bug Synopsis
17 18 19 20 21 22 23 24 25
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8316367 [Lilliput/JDK21] Provide infrastructure for Lilliput-specific ProblemList
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8316424 [Lilliput/JDK21] ZGC/CDS-related test fixes
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8316442 [Lilliput/JDK21] Problem-list compiler/ciReplay tests
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8318172 [Lilliput/JDK17] Disable Lilliput in TestZGCWithCDS
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8319135 [Lilliput] Fix objArrayOop gtest
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8319163 [Lilliput/JDK21] Fix arrayOopDesc gtest
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8320666 [Lilliput/JDK17] Add arrayOopDesc::base_offset() gtest
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8329091 [Lilliput/JDK21] Fix tests after LM_LIGHTWEIGHT backports

infrastructure/build

Fix Versions Bug Synopsis
17 18 19 20 21 22 23 24 25
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8321134 [Lilliput/JDK21] Fix repo permissions
✔ ✖ ✖ ✖ ✔ ✖ ✖ ✖ ✔ JDK-8321135 [Lilliput/JDK17] Fix repo permissions