Workaround UBSAN errors for variable arrays #15827
Merged
Conversation
This file contains 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
This gets around UBSAN errors when using arrays at the end of structs. It converts some zero-length arrays to variable length arrays and disables UBSAN checking on certain modules. It is based off of the patch from openzfs#15460. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Tested-by: Thomas Lamprecht <t.lamprecht@proxmox.com> Co-authored-by: Thomas Lamprecht <t.lamprecht@proxmox.com> Signed-off-by: Tony Hutter <hutter2@llnl.gov> Issue openzfs#15145 Closes openzfs#15510
behlendorf
force-pushed
the
issue-15510-backport
branch
from
8976589
to
217fabc
Compare
tonyhutter
approved these changes
Jan 30, 2024
behlendorf
added
Status: Accepted
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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Outdated suggestions cannot be applied.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.
Motivation and Context
#15806, #15510
Description
This gets around UBSAN errors when using arrays at the end of structs. It converts some zero-length arrays to variable length arrays and disables UBSAN checking on certain modules.
It is based off of the patch from #15460
How Has This Been Tested?
Cherry picked from the master branch and manually resolved the conflicts. This should resolve the warning but I haven't locally verified with an UBSAN enabled kernel.
Checklist:
Signed-off-by.