KASAN_UMA_FREED
case KASAN_UMA_FREED:
kasan_mark(mem, off1, off1, KASAN_UMA_FREED);
off2 - off1, KASAN_UMA_FREED);
KASAN_UMA_FREED);
kasan_mark(item, 0, sz, KASAN_UMA_FREED);
KASAN_UMA_FREED);
kasan_mark(mem, 0, sz, KASAN_UMA_FREED);