4 commits

Author	SHA1	Message	Date
Dmitry Muhomor	7268189933	mte: use tag 0 for freed slots, stop reserving tag 15	2024-01-23 12:56:54 -05:00
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