Messages in this thread | | | Date | Tue, 24 Apr 2018 09:56:21 -0400 | From | "Theodore Y. Ts'o" <> | Subject | Re: Linux messages full of `random: get_random_u32 called from` |
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On Tue, Apr 24, 2018 at 01:48:16PM +0200, Paul Menzel wrote: > Dear Linux folks, > > w > Since Linux 4.17-rcX, Linux spams a lot of `random: get_random_u32 called > from` messages. I believe, this setting should be reverted by default as > otherwise a lot of other messages are not seen.
Can you tell me a bit about your system? What distribution, what hardware is present in your sytsem (what architecture, what peripherals are attached, etc.)?
There's a reason why we made this --- we were declaring the random number pool to be fully intialized before it really was, and that was a potential security concern. It's not as bad as the weakness discovered by Nadia Heninger in 2012. (See https://factorable.net for more details.) However, this is not one of those things where we like to fool around.
So I want to understand if this is an issue with a particular hardware configuration, or whether it's just a badly designed Linux init system or embedded setup, or something else. After all, you wouldn't want the NSA spying on all of your network traffic, would you? :-)
- Ted
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