Re: [PATCH] net: stmmac: gmac5+: fix potential integer overflow on 32 bit multiply

[David Miller]

From: Colin King <colin.king@xxxxxxxxxxxxx>
Date: Fri,  1 May 2020 15:10:16 +0100

> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> 
> The multiplication of cfg->ctr[1] by 1000000000 is performed using a
> 32 bit multiplication (since cfg->ctr[1] is a u32) and this can lead
> to a potential overflow. Fix this by making the constant a ULL to
> ensure a 64 bit multiply occurs.
> 
> Fixes: 504723af0d85 ("net: stmmac: Add basic EST support for GMAC5+")
> Addresses-Coverity: ("Unintentional integer overflow")
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>

Applied.