8326615: C1/C2 don't handle allocation failure properly during initialization (RuntimeStub::new_runtime_stub fatal crash)

[dafedafe]

Issue

The test compiler/startup/StartupOutput.java fails intermittently due to a crash after correctly printing the error Initial size of CodeCache is too small (the test limits the code cache using -XX:InitialCodeCacheSize=1024K -XX:ReservedCodeCacheSize=1200k).
The appearance of the issue is very dependent on thread scheduling. The original report happens during C1 initialization but C2 initialization is affected as well.

Causes

There is one occurrence during C1 initialization and one during C2 initialization where a call to RuntimeStub::new_runtime_stub can fail fatally if there is not enough space left.
For C1: Compiler::init_c1_runtime -> Runtime1::initialize -> Runtime1::generate_blob_for -> Runtime1::generate_blob -> RuntimeStub::new_runtime_stub.
For C2: C2Compiler::initialize -> OptoRuntime::generate -> OptoRuntime::generate_stub -> Compile::Compile -> Compile::Code_Gen -> PhaseOutput::install -> PhaseOutput::install_stub -> RuntimeStub::new_runtime_stub.

Solution

Instead of avoiding the crash it makes more sense to increase the minimum code cache size by adding the size of the minimal code cache needed for C1 and C2 to CodeCacheMinimumUseSpace.

---

Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8326615: C1/C2 don't handle allocation failure properly during initialization (RuntimeStub::new_runtime_stub fatal crash) (Bug - P4)

Reviewers

• Tobias Hartmann (@TobiHartmann - Reviewer)
• Vladimir Kozlov (@vnkozlov - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/19280/head:pull/19280
$ git checkout pull/19280

Update a local copy of the PR:
$ git checkout pull/19280
$ git pull https://git.openjdk.org/jdk.git pull/19280/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 19280

View PR using the GUI difftool:
$ git pr show -t 19280

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/19280.diff

Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back dfenacci! 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.

[openjdk]

@dafedafe 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:

8326615: C1/C2 don't handle allocation failure properly during initialization (RuntimeStub::new_runtime_stub fatal crash)

Reviewed-by: thartmann, kvn

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 37 new commits pushed to the master branch:

• 6f3e3fd: 8339411: [PPC64] cmpxchgw/h/b doesn't handle external Label
• ed422ed: 8338817: Wrong indent in API docs for java.lang.management.ManagementFactory
• 288fa60: 8338891: HotSpotDiagnosticsMXBean missing @SInCE tag
• dc4fd89: 8339359: RISC-V: Use auipc explicitly in far_jump and far_call macro assembler routines
• 3a88fd4: 8334724: C2: remove PhaseIdealLoop::cast_incr_before_loop()
• 62dad3a: 8339351: Remove duplicate line in FileMapHeader::print
• 0e6bb51: 8339063: [aarch64] Skip verify_sve_vector_length after native calls if SVE supports 128 bits VL only
• b1163bc: 8256211: assert fired in java/net/httpclient/DependentPromiseActionsTest (infrequent)
• 03ba37e: 8339169: Remove NaiveHuffman coder
• a136a85: 8338768: Introduce runtime lookup to check for static builds
• ... and 27 more: https://git.openjdk.org/jdk/compare/ff59532ddd3002df61e46d58b3f29d26c78295da...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]

@dafedafe this pull request can not be integrated into master due to one or more merge conflicts. To resolve these merge conflicts and update this pull request you can run the following commands in the local repository for your personal fork:

git checkout JDK-8326615
git fetch https://git.openjdk.org/jdk.git master
git merge FETCH_HEAD
# resolve conflicts and follow the instructions given by git merge
git commit -m "Merge master"
git push

[openjdk]

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

• hotspot-compiler

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.

[mlbridge]

Webrevs

• 09: Full (e7d977e2)
• 08: Full - Incremental (2bf65dad)
• 07: Full - Incremental (0ea93c08)
• 06: Full (f79d0a31)
• 05: Full - Incremental (c7f484a4)
• 04: Full - Incremental (ea23c61e)
• 03: Full - Incremental (f16d9910)
• 02: Full - Incremental (bd2a7adf)
• 01: Full - Incremental (c505aac5)
• 00: Full (2fa14b54)

[TobiHartmann]

This is not a regression in JDK 23, right? Could you please adjust the affects versions in JIRA accordingly?

Looks good to me otherwise.

[dafedafe]

This is not a regression in JDK 23, right? Could you please adjust the affects versions in JIRA accordingly?

It is not. Fixing the version.
Thanks a lot for reviewing @TobiHartmann.

[TobiHartmann]

Thanks!

[dean-long]

Don't we need to handle failures in generate_c1_runtime_stubs? With the assert removed, I think we'll get a nullptr crash.

[dafedafe]

Yep, you're right. Actually that call could potentially fail too.
I've added code to handle that case as well.
Thanks @dean-long!

[TobiHartmann]

Looks good to me otherwise.

[dafedafe]

Looks good to me otherwise.

Thanks for the review @TobiHartmann!

[dean-long]

This looks OK, but isn't it a lot of changes just to get this test to pass? Aren't all of these allocation failures ultimately fatal? Is there a simpler way to handle this problem?

[dafedafe]

This looks OK, but isn't it a lot of changes just to get this test to pass? Aren't all of these allocation failures ultimately fatal? Is there a simpler way to handle this problem?

It seems a bit much indeed but I think there is potentially always the possibility of not failing but only disabling the compiler. @dean-long do you think the VM would anyway fail later on?

[vnkozlov]

These should be also under COMPILER*_PRESENT macros.

[dafedafe]

Right! Fixed. Thanks @vnkozlov.

[vnkozlov]

Good.

[TobiHartmann]

That looks good to me too.

[dafedafe]

Thanks @vnkozlov @TobiHartmann for your reviews!

[dafedafe]

/integrate

[openjdk]

Going to push as commit 633fad8.
Since your change was applied there have been 37 commits pushed to the master branch:

• 6f3e3fd: 8339411: [PPC64] cmpxchgw/h/b doesn't handle external Label
• ed422ed: 8338817: Wrong indent in API docs for java.lang.management.ManagementFactory
• 288fa60: 8338891: HotSpotDiagnosticsMXBean missing @SInCE tag
• dc4fd89: 8339359: RISC-V: Use auipc explicitly in far_jump and far_call macro assembler routines
• 3a88fd4: 8334724: C2: remove PhaseIdealLoop::cast_incr_before_loop()
• 62dad3a: 8339351: Remove duplicate line in FileMapHeader::print
• 0e6bb51: 8339063: [aarch64] Skip verify_sve_vector_length after native calls if SVE supports 128 bits VL only
• b1163bc: 8256211: assert fired in java/net/httpclient/DependentPromiseActionsTest (infrequent)
• 03ba37e: 8339169: Remove NaiveHuffman coder
• a136a85: 8338768: Introduce runtime lookup to check for static builds
• ... and 27 more: https://git.openjdk.org/jdk/compare/ff59532ddd3002df61e46d58b3f29d26c78295da...master

Your commit was automatically rebased without conflicts.

[openjdk]

@dafedafe Pushed as commit 633fad8.

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