RELEASE NOTES: JDK 22.0.1

Notes generated: Sun Nov 01 11:45:20 CET 2026

JEPs

None.

RELEASE NOTES

hotspot/runtime

Issue Description
JDK-8325496

Make `TrimNativeHeapInterval` a Product Switch


(Only available on Linux with glibc.) TrimNativeHeapInterval has been made an official product switch. It allows the JVM to trim the native heap at periodic intervals.

security-libs/java.security

Issue Description
JDK-8321408

Added Certainly R1 and E1 Root Certificates


The following root certificates have been added to the cacerts truststore: ``` + Certainly + certainlyrootr1 DN: CN=Certainly Root R1, O=Certainly, C=US

  • Certainly
  • certainlyroote1 DN: CN=Certainly Root E1, O=Certainly, C=US ```

hotspot/gc

Issue Description
JDK-8325074

JVM May Crash or Malfunction When Using ZGC and Non-Default `ObjectAlignmentInBytes`


Running the JVM with -XX:+UseZGC and non-default value of -XX:ObjectAlignmentInBytes may lead to JVM crashes or incorrect execution.

FIXED ISSUES

client-libs/2d

Priority Bug Summary
P3 JDK-8321489 Update LCMS to 2.16
P4 JDK-8324347 Enable "maybe-uninitialized" warning for FreeType 2.13.1
P4 JDK-8323170 j2dbench is using outdated javac source/target to be able to build by itself
P4 JDK-8323664 java/awt/font/JNICheck/FreeTypeScalerJNICheck.java still fails with JNI warning on some Windows configurations
P4 JDK-8318603 Parallelize sun/java2d/marlin/ClipShapeTest.java
P4 JDK-8323210 Update the usage of cmsFLAGS_COPY_ALPHA

client-libs/javax.swing

Priority Bug Summary
P4 JDK-8321151 JDK-8294427 breaks Windows L&F on all older Windows versions

core-libs

Priority Bug Summary
P4 JDK-8326360 Update the Zlib version in open/src/java.base/share/legal/zlib.md to 1.3

core-libs/java.io

Priority Bug Summary
P4 JDK-8322772 Clean up code after JDK-8322417
P4 JDK-8322417 Console read line with zero out should zero out when throwing exception

core-libs/java.net

Priority Bug Summary
P4 JDK-8314164 java/net/HttpURLConnection/HttpURLConnectionExpectContinueTest.java fails intermittently in timeout

core-libs/java.time

Priority Bug Summary
P3 JDK-8325150 (tz) Update Timezone Data to 2024a

core-svc/debugger

Priority Bug Summary
P4 JDK-8317804 com/sun/jdi/JdwpAllowTest.java fails on Alpine 3.17 / 3.18
P4 JDK-8319382 com/sun/jdi/JdwpAllowTest.java shows failures on AIX if prefixLen of mask is larger than 32 in IPv6 case

core-svc/java.lang.management

Priority Bug Summary
P4 JDK-8324637 [aix] Implement support for reporting swap space in jdk.management

hotspot/compiler

Priority Bug Summary
P2 JDK-8325313 Header format error in TestIntrinsicBailOut after JDK-8317299
P3 JDK-8325326 [PPC64] Don't relocate in case of allocation failure
P3 JDK-8326101 [PPC64] Need to bailout cleanly if creation of stubs fails when code cache is out of space
P3 JDK-8325672 C2: allocate PhaseIdealLoop::_loop_or_ctrl from C->comp_arena()
P3 JDK-8323154 C2: assert(cmp != nullptr && cmp->Opcode() == Op_Cmp(bt)) failed: no exit test
P3 JDK-8326638 Crash in PhaseIdealLoop::remix_address_expressions due to unexpected Region instead of Loop
P3 JDK-8324050 Issue store-store barrier after re-materializing objects during deoptimization
P3 JDK-8317299 safepoint scalarization doesn't keep track of the depth of the JVM state
P4 JDK-8318158 RISC-V: implement roundD/roundF intrinsics
P4 JDK-8322790 RISC-V: Tune costs for shuffles with no conversion
P4 JDK-8323065 Unneccesary CodeBlob lookup in CompiledIC::internal_set_ic_destination

hotspot/gc

Priority Bug Summary
P2 JDK-8325074 ZGC fails assert(index == 0 || is_power_of_2(index)) failed: Incorrect load shift: 11
P3 JDK-8323086 Shenandoah: Heap could be corrupted by oom during evacuation
P4 JDK-8323021 Shenandoah: Encountered reference count always attributed to first worker thread
P4 JDK-8321815 Shenandoah: gc state should be synchronized to java threads only once per safepoint
P4 JDK-8323428 Shenandoah: Unused memory in regions compacted during a full GC should be mangled

hotspot/other

Priority Bug Summary
P4 JDK-8325470 [AIX] use fclose after fopen in read_psinfo

hotspot/runtime

Priority Bug Summary
P2 JDK-8323556 CDS archive space addresses should be randomized with ArchiveRelocationMode=1
P3 JDK-8327391 Add SipHash attribution file
P4 JDK-8324753 [AIX] adjust os_posix after JDK-8318696
P4 JDK-8320890 [AIX] Find a better way to mimic dl handle equality
P4 JDK-8318696 Do not use LFS64 symbols on Linux
P4 JDK-8323331 fix typo hpage_pdm_size
P4 JDK-8325496 Make TrimNativeHeapInterval a product switch
P4 JDK-8322098 os::Linux::print_system_memory_info enhance the THP output with /sys/kernel/mm/transparent_hugepage/hpage_pmd_size
P4 JDK-8322783 prioritize /etc/os-release over /etc/SuSE-release in hs_err/info output
P4 JDK-8324280 RISC-V: Incorrect implementation in VM_Version::parse_satp_mode
P4 JDK-8323964 runtime/Thread/ThreadCountLimit.java fails intermittently on AIX
P4 JDK-8321972 test runtime/Unsafe/InternalErrorTest.java timeout on linux-riscv64 platform
P4 JDK-8324598 use mem_unit when working with sysinfo memory and swap related information

hotspot/test

Priority Bug Summary
P4 JDK-8325876 crashes in docker container tests on Linuxppc64le Power8 machines
P4 JDK-8323515 Create test alias "all" for all test roots
P4 JDK-8324647 Invalid test group of lib-test after JDK-8323515

infrastructure

Priority Bug Summary
P4 JDK-8322092 Bump version numbers for 22.0.1

infrastructure/build

Priority Bug Summary
P3 JDK-8323675 Race in jdk.javadoc-gendata
P4 JDK-8321374 Add a configure option to explicitly set CompanyName property in VersionInfo resource for Windows exe/dll
P4 JDK-8323637 Capture hotspot replay files in GHA
P4 JDK-8325213 Flags introduced by configure script are not passed to ADLC build
P4 JDK-8324937 GHA: Avoid multiple test suites per job
P4 JDK-8324659 GHA: Generic jtreg errors are not reported

security-libs/java.security

Priority Bug Summary
P3 JDK-8321408 Add Certainly roots R1 and E1

security-libs/javax.net.ssl

Priority Bug Summary
P4 JDK-8326000 Remove obsolete comments for class sun.security.ssl.SunJSSE

tools/javac

Priority Bug Summary
P3 JDK-8323657 Compilation of snippet results in VerifyError at runtime with --release 9 (and above)
P3 JDK-8314275 Incorrect stepping in switch
P3 JDK-8322159 ThisEscapeAnalyzer crashes for erroneous code

tools/jpackage

Priority Bug Summary
P3 JDK-8325203 System.exit(0) kills the launched 3rd party application