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3 commits

Author SHA1 Message Date
Dmitry Muhomor
72dc236d5f mte: add untag_pointer() variant for const pointers 2023-10-30 14:20:53 -04:00
Dmitry Muhomor
01a199e19e mte: move is_memtag_enabled to read-only allocator data 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