Fix data race between consumer of QueryParam.Entries and the sender #131
Conversation
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
|
Thank you for your submission! We require that all contributors sign our Contributor License Agreement ("CLA") before we can accept the contribution. Read and sign the agreement Learn more about why HashiCorp requires a CLA and what the CLA includes Have you signed the CLA already but the status is still pending? Recheck it. |
1 similar comment
|
Thank you for your submission! We require that all contributors sign our Contributor License Agreement ("CLA") before we can accept the contribution. Read and sign the agreement Learn more about why HashiCorp requires a CLA and what the CLA includes Have you signed the CLA already but the status is still pending? Recheck it. |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
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Outdated suggestions cannot be applied.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.
Hello! This patch is a small fix to a data race. If the calling code reads from the channel provided via
QueryParam.Entries, there is a chance that they read from a pointer that is being mutated by the code inclient.query. This happens because we mutate the data that the pointer points to, even after we send that pointer over the channel.It looks like there was an attempt at fixing this a couple years ago: #75. The change proposed here differs a little bit, since I'm doing a deep copy of all of the data. This should prevent the calling code from messing with the internal state of the client.
It seems like this might not be the approach you all want, so if there is another potential solution, let me know and I'll be happy to try and submit a patch!