The dsdb_paged_results ldb module does not check out of memory conditions and takes a talloc_steal of constant caller memory. Some of the patches that were written in the hope of fixing bug 14970 should be included as robustness.
This bug was referenced in samba master: 1b68bd977af39263a71af2c6a314c5ccb29e348c 3b51091c20a3c807932bcc986ebb8a676e0ffe6a 003162559848ce45d4f5bd3fb66642960538120f