8312394: [linux] SIGSEGV if kernel was built without hugepage support

[tstuefe]

Clean backport (based on #1694). Fixes a crash post-8310233 on obscure Linux kernels (compiled without huge page support, typically for SBCs). We saw it on arm32 on Raspian OS.

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Progress

• Change must not contain extraneous whitespace
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Issue

• JDK-8312394: [linux] SIGSEGV if kernel was built without hugepage support (Bug - P3)

Reviewing

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$ git fetch https://git.openjdk.org/jdk17u-dev.git pull/1695/head:pull/1695
$ git checkout pull/1695

Update a local copy of the PR:
$ git checkout pull/1695
$ git pull https://git.openjdk.org/jdk17u-dev.git pull/1695/head

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$ git pr checkout 1695

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[bridgekeeper]

👋 Welcome back stuefe! 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]

This backport pull request has now been updated with issue from the original commit.

[tstuefe]

/clean

[openjdk]

@tstuefe This backport pull request is now marked as clean

[openjdk]

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

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8312394: [linux] SIGSEGV if kernel was built without hugepage support

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[mlbridge]

Webrevs

• 00: Full (c2eaf229)

[tstuefe]

Tests clean apart from an unrelated windows test error, push approval granted.

/integrate

[openjdk]

Going to push as commit fbe3773.
Since your change was applied there has been 1 commit pushed to the master branch:

• 0d4fbb4: 8295229: Try to verify gtest version

Your commit was automatically rebased without conflicts.

[openjdk]

@tstuefe Pushed as commit fbe3773.

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