From: John Fastabend <[email protected]> Date: Thu, 19 Oct 2017 09:03:52 -0700
> An integer overflow is possible in dev_map_bitmap_size() when > calculating the BITS_TO_LONG logic which becomes, after macro > replacement, > > (((n) + (d) - 1)/ (d)) > > where 'n' is a __u32 and 'd' is (8 * sizeof(long)). To avoid > overflow cast to u64 before arithmetic. > > Reported-by: Richard Weinberger <[email protected]> > Acked-by: Daniel Borkmann <[email protected]> > Signed-off-by: John Fastabend <[email protected]> Applied.
