RFR: Save/load i2c2i adapters [v6]

[Ashutosh Mehra]

On Tue, 7 Jan 2025 19:21:01 GMT, Ioi Lam <iklam at openjdk.org> wrote:

>>> @iklam can you run this patch through our internal testing?
>> 
>> OK I will do it.
>
>> > @iklam can you run this patch through our internal testing?
>> 
>> OK I will do it.
> 
> I am seeing new failures on aarch64 only. x64 seems fine:
> 
> 
> runtime/cds/appcds/applications/JavacBench.java#leyden			macosx-aarch64-debug
> runtime/cds/appcds/applications/MicronautFirstApp.java#leyden		macosx-aarch64-debug
> runtime/cds/appcds/applications/MicronautFirstApp.java#leyden		linux-aarch64-open
> runtime/cds/appcds/applications/MicronautFirstApp.java#leyden		linux-aarch64-debug
> runtime/cds/appcds/applications/QuarkusGettingStarted.java#leyden       linux-aarch64-debug
> 
> 
> Here's the hs_err. This happens in the final production run. 
> 
> 
> #  SIGSEGV (0xb) at pc=0x0000ffff89976650, pid=3238003, tid=3238006
> #
> # JRE version: Java(TM) SE Runtime Environment (24.0) (fastdebug build 24-internal-2025-01-07-1758562.ioi.lam.le4)
> # Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 24-internal-2025-01-07-1758562.ioi.lam.le4, mixed mode, sharing, tiered, compressed oops, compressed class ptrs, g1 gc, linux-aarch64)
> # Problematic frame:
> # v  ~AdapterBlob 0x0000ffff83d1b0d8
> 
> ---------------  S U M M A R Y ------------
> 
> Command Line: -XX:MaxRAMPercentage=6.25 -Dtest.boot.jdk=/opt/mach5/mesos/work_dir/jib-master/install/jdk/23/37/bundles/linux-aarch64/jdk-23_linux-aarch64_bin.tar.gz/jdk-23 -Djava.io.tmpdir=/opt/mach5/mesos/work_dir/slaves/b733f181-520a-4536-86fc-7df55263c942-S3131/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/4ab6604d-6790-4797-a358-fcfe3a5e2cfe/runs/b53804f1-a345-47c7-9bed-24313dccd140/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_tier2_runtime/tmp -DautoQuit=true -Dmicronaut.server.port=0 -XX:+IgnoreUnrecognizedVMOptions -XX:-VerifyDependencies -XX:+UnlockDiagnosticVMOptions -XX:VerifyArchivedFields=2 -Xlog:cds:file=MicronautFirstApp.production.log::filesize=0 -XX:CacheDataStore=MicronautFirstApp.cds -Xlog:scc=error example.micronaut.Application

@iklam I have tried reproducing these failures on an linux-aarch64 (fedora 40) system but the tests always pass. I have run them multiple times using fastdebug and release build but didn't get any failure.
Are these failure reproducible every time in your testing, or are they intermittent? Which Linux distro were this tests run on? Also, can you share the backtrace for the crash.

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PR Comment: https://git.openjdk.org/leyden/pull/25#issuecomment-2578755880