8270491: SEGV at read_string_field(oopDesc*, char const*, JavaThread*)+0x54

[mgronlun]

Greetings,

Please help review this changeset which adds missing logic to handle potential exceptions when retrieving the MBean argument descriptors for the JFR diagnostic commands.

Testing: jdk_jfr, perfstartup

Thanks
Markus

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• Change must be properly reviewed

Issue

• JDK-8270491: SEGV at read_string_field(oopDesc*, char const*, JavaThread*)+0x54

Reviewers

• Erik Gahlin (@egahlin - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk17 pull/267/head:pull/267
$ git checkout pull/267

Update a local copy of the PR:
$ git checkout pull/267
$ git pull https://git.openjdk.java.net/jdk17 pull/267/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 267

View PR using the GUI difftool:
$ git pr show -t 267

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk17/pull/267.diff

[bridgekeeper]

👋 Welcome back mgronlun! 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]

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

• hotspot-jfr

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[mlbridge]

Webrevs

• 00: Full (ee9d2a89)

[openjdk]

@mgronlun 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:

8270491: SEGV at read_string_field(oopDesc*, char const*, JavaThread*)+0x54

Reviewed-by: egahlin

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 40 new commits pushed to the master branch:

• b76a838: 8269150: UnicodeReader not translating \u005c\u005d to \]
• 7ddabbf: 8271175: runtime/jni/FindClassUtf8/FindClassUtf8.java doesn't have to be run in othervm
• 3c27f91: 8271222: two runtime/Monitor tests don't check exit code
• 049b2ad: 8015886: java/awt/Focus/DeiconifiedFrameLoosesFocus/DeiconifiedFrameLoosesFocus.java sometimes failed on ubuntu
• 8adf008: 8269984: [macos] JTabbedPane title looks like disabled
• e90ed6c: 8271173: serviceability/jvmti/GetObjectSizeClass.java doesn't check exit code
• b4c6229: 8271189: runtime/handshake/HandshakeTimeoutTest.java can be run in driver mode
• e3800e6: 8271162: runtime/StackTrace/LargeClassTest.java can be run in driver mode
• ee93cef: 8271158: runtime/handshake/HandshakeTimeoutTest.java test doesn't check exit code
• 84be910: 8271169: runtime/Safepoint/TestAbortVMOnSafepointTimeout.java can be run in driver mode
• ... and 30 more: https://git.openjdk.java.net/jdk17/compare/0cec11d3eb7393b76dbe1fbfe55a5f363824c1c4...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.

[mgronlun]

/integrate

[openjdk]

Going to push as commit f662127.
Since your change was applied there have been 41 commits pushed to the master branch:

• cea7bc2: 8271223: two runtime/ClassFile tests don't check exit code
• b76a838: 8269150: UnicodeReader not translating \u005c\u005d to \]
• 7ddabbf: 8271175: runtime/jni/FindClassUtf8/FindClassUtf8.java doesn't have to be run in othervm
• 3c27f91: 8271222: two runtime/Monitor tests don't check exit code
• 049b2ad: 8015886: java/awt/Focus/DeiconifiedFrameLoosesFocus/DeiconifiedFrameLoosesFocus.java sometimes failed on ubuntu
• 8adf008: 8269984: [macos] JTabbedPane title looks like disabled
• e90ed6c: 8271173: serviceability/jvmti/GetObjectSizeClass.java doesn't check exit code
• b4c6229: 8271189: runtime/handshake/HandshakeTimeoutTest.java can be run in driver mode
• e3800e6: 8271162: runtime/StackTrace/LargeClassTest.java can be run in driver mode
• ee93cef: 8271158: runtime/handshake/HandshakeTimeoutTest.java test doesn't check exit code
• ... and 31 more: https://git.openjdk.java.net/jdk17/compare/0cec11d3eb7393b76dbe1fbfe55a5f363824c1c4...master

Your commit was automatically rebased without conflicts.

[openjdk]

@mgronlun Pushed as commit f662127.

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