"arc4random: no preloaded entropy cache" printed once per CPU on startup
Rebecca Cran
rebecca at bluestop.org
Sat Oct 27 22:38:02 UTC 2018
On a normal boot (not verbose) of -CURRENT from today's sources I'm
getting the following message printed once for each logical CPU:
arc4random: no preloaded entropy cache
Since other messages, including the same one in random_harvestq.c are
under bootverbose, should this one in arc4random.c be too?
I guess another question is _why_ this message is being displayed, since
it looks like it should only happen if an entropy stash (/entropy?) is
missing:
/*
* This is making the best of what may be an insecure
* Situation. If the loader(8) did not have an entropy
* stash from the previous shutdown to load, then we will
* be improperly seeded. The answer is to make sure there
* is an entropy stash at shutdown time.
*/
--
Rebecca
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