From: John Fastabend <john.r.fastab...@gmail.com>
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 <rich...@nod.at>
> Acked-by: Daniel Borkmann <dan...@iogearbox.net>
> Signed-off-by: John Fastabend <john.fastab...@gmail.com>

Applied.

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