Messages in this thread |  | | Date | Sun, 29 Apr 2018 23:18:55 +0200 | From | Pavel Machek <> | Subject | Re: Linux messages full of `random: get_random_u32 called from` |
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On Sun 2018-04-29 13:20:33, Sultan Alsawaf wrote: > On Sun, Apr 29, 2018 at 08:41:01PM +0200, Pavel Machek wrote: > > Umm. No. https://www.youtube.com/watch?v=xneBjc8z0DE > > Okay, but /dev/urandom isn't a solution to this problem because it isn't usable > until crng init is complete, so it suffers from the same init lag as > /dev/random.
So -- I'm pretty sure systemd and friends should be using /dev/urandom. Maybe gpg wants to use /dev/random. _Maybe_.
[ 2.948192] random: systemd: uninitialized urandom read (16 bytes read) [ 2.953526] systemd[1]: systemd 215 running in system mode. (+PAM +AUDIT +SELINUX +IMA +SYSVINIT +LIBCRYPTSETUP +GCRYPT +ACL +XZ -SECCOMP -APPARMOR) [ 2.980278] systemd[1]: Detected architecture 'x86'. [ 3.115072] usb 5-2: New USB device found, idVendor=0483, idProduct=2016, bcdDevice= 0.01 [ 3.119633] usb 5-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 3.124147] usb 5-2: Product: Biometric Coprocessor [ 3.128621] usb 5-2: Manufacturer: STMicroelectronics [ 3.163839] systemd[1]: Failed to insert module 'ipv6' [ 3.181266] systemd[1]: Set hostname to <amd>. [ 3.267243] random: systemd-sysv-ge: uninitialized urandom read (16 bytes read) [ 3.669590] random: systemd-sysv-ge: uninitialized urandom read (16 bytes read) [ 3.696242] random: systemd: uninitialized urandom read (16 bytes read) [ 3.700066] random: systemd: uninitialized urandom read (16 bytes read) [ 3.703716] random: systemd: uninitialized urandom read (16 bytes read)
Anyway, urandom should need to be seeded once, and then provide random data forever... which is not impression I get from the dmesg output above. Boot clearly proceeds... somehow. So now I'm confused.
Best regards, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html [unhandled content-type:application/pgp-signature] |  |