find_held_lock
hlock = find_held_lock(curr, lock, depth, &i);
hlock = find_held_lock(curr, lock, depth, &i);
hlock = find_held_lock(curr, lock, depth, &i);
hlock = find_held_lock(curr, lock, depth, &i);
hlock = find_held_lock(curr, lock, depth, &i);