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8305066: [JVMCI] guarantee(ik->is_initialized()) failed: java/lang/Long$LongCache must be initialized #13229

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@dougxc dougxc commented Mar 29, 2023

Class initialization can fail for the boxing caches such as Long$LongCache due to things such as a StackOverflowError.
When rematerializing boxed values during deoptimization, a failed cache initialization must be handled. This PR handles it by throwing an OOME which is always semantically correct.

Note that a VM with a broken boxing cache is going to be in a fairly miserable state (i.e. throwing NoClassDefFoundError on every call to Long.valueOf) so the OOME shouldn't cause any noticeable problem.


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  • JDK-8305066: [JVMCI] guarantee(ik->is_initialized()) failed: java/lang/Long$LongCache must be initialized

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👋 Welcome back dnsimon! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

@@ -192,15 +192,6 @@ public static HotSpotJVMCIRuntime runtime() {
// initialized.
JVMCI.getRuntime();
}
// Make sure all the primitive box caches are populated (required to properly
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This code has not been necessary ever since

JVMCI::ensure_box_caches_initialized(CHECK_(JVMCI::ok));
was added.

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How are the caches uninitialized if we have forced their initialization?

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A box cache initialization can fail due to StackOverflowError. In this case, we must not rematerialize a virtual object corresponding to a value that would be read from a box cache.

@dougxc dougxc marked this pull request as ready for review March 29, 2023 13:46
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openjdk bot commented Mar 29, 2023

@dougxc The following label will be automatically applied to this pull request:

  • hotspot

When this pull request is ready to be reviewed, an "RFR" email will be sent to the corresponding mailing list. If you would like to change these labels, use the /label pull request command.

@openjdk openjdk bot added hotspot hotspot-dev@openjdk.org rfr Pull request is ready for review labels Mar 29, 2023
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mlbridge bot commented Mar 29, 2023

Webrevs

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This looks good to me. There's really no other way to handle it.

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openjdk bot commented Mar 31, 2023

@dougxc This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8305066: [JVMCI] guarantee(ik->is_initialized()) failed: java/lang/Long$LongCache must be initialized

Reviewed-by: never, iveresov

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 52 new commits pushed to the master branch:

  • fe42312: 8304820: Statically allocate ObjectSynchronizer mutexes
  • 2f36eb0: 8305323: Update java/net/httpclient/ContentLengthHeaderTest.java to use new HttpTestServer factory methods
  • 049b953: 8305223: IGV: mark osr compiled graphs with [OSR] in the name
  • 345669c: 8302738: IGV: refine 'Simplify graph' filter
  • dea9db2: 8305055: IR check fails on some aarch64 platforms
  • c8f3a97: 8305171: PPC: Should use IMA::load_resolved_indy_entry() in TIG::generate_return_entry_for()
  • 7fe5bd2: 8305174: disable dtrace for s390x builds
  • 787832a: 8304988: unnecessary dash in @param gives double-dash in docs
  • a144c71: 8305008: RISC-V: Factor out immediate checking functions from assembler_riscv.inline.hpp
  • d815889: 8304993: bad sentence break in DateFormat
  • ... and 42 more: https://git.openjdk.org/jdk/compare/395a4ce0dd4181bbb4bc0888038309901ebf8fea...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

@openjdk openjdk bot added the ready Pull request is ready to be integrated label Mar 31, 2023
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Looks ok

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dougxc commented Mar 31, 2023

Thanks @veresov and @tkrodriguez for reviewing.

/integrate

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openjdk bot commented Mar 31, 2023

Going to push as commit e012685.
Since your change was applied there have been 52 commits pushed to the master branch:

  • fe42312: 8304820: Statically allocate ObjectSynchronizer mutexes
  • 2f36eb0: 8305323: Update java/net/httpclient/ContentLengthHeaderTest.java to use new HttpTestServer factory methods
  • 049b953: 8305223: IGV: mark osr compiled graphs with [OSR] in the name
  • 345669c: 8302738: IGV: refine 'Simplify graph' filter
  • dea9db2: 8305055: IR check fails on some aarch64 platforms
  • c8f3a97: 8305171: PPC: Should use IMA::load_resolved_indy_entry() in TIG::generate_return_entry_for()
  • 7fe5bd2: 8305174: disable dtrace for s390x builds
  • 787832a: 8304988: unnecessary dash in @param gives double-dash in docs
  • a144c71: 8305008: RISC-V: Factor out immediate checking functions from assembler_riscv.inline.hpp
  • d815889: 8304993: bad sentence break in DateFormat
  • ... and 42 more: https://git.openjdk.org/jdk/compare/395a4ce0dd4181bbb4bc0888038309901ebf8fea...master

Your commit was automatically rebased without conflicts.

@openjdk openjdk bot added the integrated Pull request has been integrated label Mar 31, 2023
@openjdk openjdk bot closed this Mar 31, 2023
@openjdk openjdk bot removed ready Pull request is ready to be integrated rfr Pull request is ready for review labels Mar 31, 2023
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openjdk bot commented Mar 31, 2023

@dougxc Pushed as commit e012685.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.

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