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4 commits

Author SHA1 Message Date
Dmitry Muhomor
009f2dad76 mte: note alignment requirements of arm_mte_tag_and_clear_mem() 2023-10-30 14:20:53 -04:00
Dmitry Muhomor
03883eb2ce mte: rename arm_mte_store_tags_and_clear() to arm_mte_tag_and_clear_mem() 2023-10-30 14:20:53 -04:00
Dmitry Muhomor
577d9583eb mte: add licensing info for code that was copied from scudo 2023-10-30 14:20:53 -04:00
Dmitry Muhomor
e3686ae457 add support for Arm MTE memory tagging 
- tag slab allocations with [1..14] tags
- tag freed slab allocations with the "15" tag value to detect accesses to freed slab memory
- when generating tag value for a slab slot, always exclude most recent tag value for that slot
(to make use-after-free detection more reliable) and most recent tag values of its immediate
neighbors (to detect linear overflows and underflows)
 2023-10-30 14:20:53 -04:00