On Thu, 26 Jan 2023 17:33:28 GMT, Justin King <jck...@openjdk.org> wrote:
> Adds initial LSan (LeakSanitizer) support to Hotspot. This setup has been > used to identify multiple leaks so far. It can run most of the test suite > except those that also fail with ASan, which is being looked at separately. > It is especially useful when combined with ASan, as LSan can use poisoning > information to determine what memory to scan or not to scan, making leak > detection more accurate and faster. > > **Suppressing:** > Currently the suppression list is only used to suppress JLI leaks that are > known, the rest are done in code. Suppressing needs to identify the source of > thet leak. Due to Hotspot's code organization, we would need to suppress > `os::malloc` and friends, which would suppress everything. Suppressing in > code has the added benefit of being explicit and surviving refactors if > methods change. > > **Caveats:** > - By default ASan enables LSan, however we explicitly disable it unless > `--enable-lsan` is given. It is useful to be able to use ASan without LSan. > Using LSan by itself is less likely to be useful and will probably not work, > but its still possible currently. This pull request has now been integrated. Changeset: 27126157 Author: Justin King <jck...@openjdk.org> Committer: Magnus Ihse Bursie <i...@openjdk.org> URL: https://git.openjdk.org/jdk/commit/27126157d927c5ec4354cde8f31076899691996b Stats: 316 lines in 22 files changed: 307 ins; 0 del; 9 mod 8298445: Add LeakSanitizer support in HotSpot Reviewed-by: erikj, ihse ------------- PR: https://git.openjdk.org/jdk/pull/12229
