All other pkey syscalls already handle errors gracefully.
But in case of a seccomp filter that blocks pkey but doesn't terminate, this change is necessary to continue to function.
Signed-off-by: Tad <tad@spotco.us>
- 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)
Tad
Dmitry Muhomor
jvoisin
Daniel Micay