[PAL] Fix attestation LibOS regression test for UBSan
#2004
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
UBSan detects an uninitialized boolean variable on a DCAP SGX machine on
the remote attestation example, failing with the message:
error: ubsan: load of invalid value for bool or enum: 100
error: ubsan: ../pal/src/host/linux-sgx/pal_misc.c:724:43
This happens because `bool linkable` variable is assigned only in the
EPID attestation scheme, but left unassigned in the DCAP scheme. This
commit fixes this (though it's not a bug since DCAP never uses
`linkable` anyway). Hence, UBSan doesn't complain anymore.
Signed-off-by: Dmitrii Kuvaiskii <[email protected]>
kailun-qin
approved these changes
Sep 24, 2024
There was a problem hiding this comment.
Reviewed 1 of 1 files at r1, all commit messages.
Reviewable status: all files reviewed, all discussions resolved, not enough approvals from maintainers (1 more required), not enough approvals from different teams (1 more required, approved so far: Intel)
mkow
approved these changes
Sep 24, 2024
There was a problem hiding this comment.
Reviewed 1 of 1 files at r1, all commit messages.
Reviewable status:complete! all files reviewed, all discussions resolved
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Outdated suggestions cannot be applied.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.
Description of the changes
UBSan detects an uninitialized boolean variable on a DCAP SGX machine on the remote attestation example, failing with the message:
This happens because
bool linkablevariable is assigned only in the EPID attestation scheme, but left unassigned in the DCAP scheme. This commit fixes this (though it's not a bug since DCAP never useslinkableanyway). Hence, UBSan doesn't complain anymore.Reported by @woju
How to test this PR?
Run LibOS regression test
attestationon Ubuntu 24.04 + UBSan enabled + DCAP attestation.This change is