Re: [PATCH net-next] xfrm6_tunnel: Fix spi check in __xfrm6_tunnel_alloc_spi

[Steffen Klassert]

On Wed, Dec 19, 2018 at 02:45:09PM +0800, YueHaibing wrote:
> gcc warn this:
> 
> net/ipv6/xfrm6_tunnel.c:143 __xfrm6_tunnel_alloc_spi() warn:
>  always true condition '(spi <= 4294967295) => (0-u32max <= u32max)'
> 
> 'spi' is u32, which always not greater than XFRM6_TUNNEL_SPI_MAX
> because of wrap around. So the second forloop will never reach.
> 
> Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>

Also applied, thanks a lot!