mem: Guard against Buddy_Allocator overwriting metadata

2026-06-19 04:12:22 -07:00 · 2025-06-20 06:44:44 -04:00
parent bfa0e1110a
commit 4d4356e806
1 changed files with 1 additions and 0 deletions
@@ -2328,6 +2328,7 @@ buddy_allocator_alloc_bytes_non_zeroed :: proc(b: ^Buddy_Allocator, size: uint)
 		}
 		found.is_free = false
 		data := ([^]byte)(found)[b.alignment:][:size]
+		assert(cast(uintptr)raw_data(data)+cast(uintptr)size < cast(uintptr)buddy_block_next(found), "Buddy_Allocator has made an allocation which overlaps a block header.")
 		// ensure_poisoned(data)
 		// sanitizer.address_unpoison(data)
 		return data, nil