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 <[email protected]> > Acked-by: Daniel Borkmann <[email protected]> > Signed-off-by: John Fastabend <[email protected]>
Acked-by: Alexei Starovoitov <[email protected]>
