On Thu, Oct 19, 2017 at 09:03:52AM -0700, John Fastabend wrote: > 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>
Acked-by: Alexei Starovoitov <a...@kernel.org>
