Prevent DDR code crash on reading garbage - #21576
Merged
Merged
Conversation
Currently Check Engine code failed at attempt to read class data if it is unexpected garbage. Signed-off-by: Dmitri Pivkine <Dmitri_Pivkine@ca.ibm.com>
amicic
approved these changes
Apr 4, 2025
Contributor
|
jenkins compile aix jdk21 |
keithc-ca
reviewed
Apr 4, 2025
|
|
||
| // Short circuit if we've recently checked this class. | ||
| int cacheIndex = (int) (clazz.longValue() % CLASS_CACHE_SIZE); | ||
| int cacheIndex = new UDATA(clazz.longValue()).mod(CLASS_CACHE_SIZE).intValue(); |
Contributor
There was a problem hiding this comment.
A more concise expression would be UDATA.cast(clazz).mod(CLASS_CACHE_SIZE).intValue().
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Currently Check Engine code failed at attempt to read class data if it is unexpected garbage.