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[common] Update ASan to be compatible with Clang 18 #1930

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merged 1 commit into from
Jul 24, 2024

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dimakuv
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@dimakuv dimakuv commented Jun 27, 2024

Description of the changes

Newer Clang versions added more ASan callbacks, in particular __asan_register_elf_globals() and __asan_unregister_elf_globals(). Our code replicates exactly what the Clang/LLVM code does for these two callbacks.

See:

Why these callbacks were added exactly, I am not sure. All I understand is that in some mode, on ELF-based platforms, these callbacks are called instead of a more generic __asan_register_globals(). See these links, maybe someone will get a better understanding of this change:

How to test this PR?

CI is enough for older ASan versions. To test newer ASan versions, run on Ubuntu 24.04 (and default Clang version there, which is v18).


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Reviewable status: 0 of 2 files reviewed, 1 unresolved discussion, not enough approvals from maintainers (2 more required), not enough approvals from different teams (1 more required, approved so far: Intel)

a discussion (no related file):
Must be rebased on top of #1929. Blocking.


mkow
mkow previously approved these changes Jul 1, 2024
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Reviewed 1 of 2 files at r1, 1 of 1 files at r2, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion, not enough approvals from maintainers (1 more required)

kailun-qin
kailun-qin previously approved these changes Jul 2, 2024
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Reviewed 1 of 2 files at r1, 1 of 1 files at r2, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion

@dimakuv dimakuv force-pushed the dimakuv/ubsan-fix-clang-18 branch from f05ae1c to 78776a5 Compare July 22, 2024 17:10
Base automatically changed from dimakuv/ubsan-fix-clang-18 to master July 23, 2024 12:54
@dimakuv dimakuv dismissed stale reviews from kailun-qin and mkow July 23, 2024 12:54

The base branch was changed.

Newer Clang versions added more ASan callbacks, in particular
`__asan_register_elf_globals()` and `__asan_unregister_elf_globals()`.
Our code replicates exactly what the Clang/LLVM code does for these two
callbacks.

Signed-off-by: Dmitrii Kuvaiskii <dmitrii.kuvaiskii@intel.com>
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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)

a discussion (no related file):

Previously, dimakuv (Dmitrii Kuvaiskii) wrote…

Must be rebased on top of #1929. Blocking.

Done


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Reviewed 1 of 2 files at r1, 1 of 1 files at r2, all commit messages.
Reviewable status: all files reviewed, all discussions resolved, not enough approvals from different teams (1 more required, approved so far: Intel)

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Reviewable status: :shipit: complete! all files reviewed, all discussions resolved

@mkow mkow merged commit f900466 into master Jul 24, 2024
17 of 18 checks passed
@mkow mkow deleted the dimakuv/asan-fix-clang-18 branch July 24, 2024 00:37
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3 participants