netdev - RE: [PATCH v6 3/7] treewide: use get_random

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Date:   Tue, 11 Oct 2022 01:18:40 +0000
From:   "Elliott, Robert (Servers)" <elliott@....com>
To:     "Jason A. Donenfeld" <Jason@...c4.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "patches@...ts.linux.dev" <patches@...ts.linux.dev>
CC:     Andreas Noever <andreas.noever@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Borislav Petkov <bp@...en8.de>,
        "Catalin Marinas" <catalin.marinas@....com>,
        Christoph Böhmwalder 
        <christoph.boehmwalder@...bit.com>, Christoph Hellwig <hch@....de>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Daniel Borkmann <daniel@...earbox.net>,
        Dave Airlie <airlied@...hat.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "David S . Miller" <davem@...emloft.net>,
        "Eric Dumazet" <edumazet@...gle.com>,
        Florian Westphal <fw@...len.de>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        "H . Peter Anvin" <hpa@...or.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Helge Deller <deller@....de>,
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        Toke Høiland-Jørgensen <toke@...e.dk>
Subject: RE: [PATCH v6 3/7] treewide: use get_random_{u8,u16}() when possible,
 part 1


> diff --git a/crypto/testmgr.c b/crypto/testmgr.c
...
> @@ -944,7 +944,7 @@ static void generate_random_bytes(u8 *buf, size_t count)
>  	default:
>  		/* Fully random bytes */
>  		for (i = 0; i < count; i++)
> -			buf[i] = (u8)prandom_u32();
> +			buf[i] = get_random_u8();

Should that whole for loop be replaced with this?
    get_random_bytes(buf, count);