Re: [PATCH 5.7 021/120] random32: update the net random state on interrupt and activity

Hi Greg,

On Mon, Aug 03, 2020 at 02:17:59PM +0200, Greg Kroah-Hartman wrote:

From: Willy Tarreau w@1wt.eu

commit f227e3ec3b5cad859ad15666874405e8c1bbc1d4 upstream.

This modifies the first 32 bits out of the 128 bits of a random CPU's net_rand_state on interrupt or CPU activity to complicate remote observations that could lead to guessing the network RNG's internal state.

(...)

Stephen reported at least one powerpc build breakage with this one, and Michael suggested a yet unmerged fix. Thus I'm wondering if we shouldn't postpone inclusion of these 3 random32 backports to stable to give some time to stabilize them and avoid breaking setups.

Just my two cents, Willy