Messages in this thread |  | | From | Thomas Gleixner <> | Subject | Re: [PATCH v4 RESEND] timekeeping: contribute wall clock to rng on time change | Date | Mon, 18 Jul 2022 14:20:37 +0200 |
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On Sun, Jul 17 2022 at 23:53, Jason A. Donenfeld wrote:
> The rng's random_init() function contributes the real time to the rng at > boot time, so that events can at least start in relation to something > particular in the real world. But this clock might not yet be set that > point in boot, so nothing is contributed. In addition, the relation > between minor clock changes from, say, NTP, and the cycle counter is > potentially useful entropic data. > > This commit addresses this by mixing in a time stamp on calls to > settimeofday and adjtimex. No entropy is credited in doing so, so it > doesn't make initialization faster, but it is still useful input to > have. > > Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") > Cc: stable@vger.kernel.org > Reviewed-by: Eric Biggers <ebiggers@google.com> > Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
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