[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[    5.737581] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   21.584665] random: sshd: uninitialized urandom read (32 bytes read)
[   21.806279] random: sshd: uninitialized urandom read (32 bytes read)
[   22.223200] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.16' (ECDSA) to the list of known hosts.
[   27.662058] urandom_read: 1 callbacks suppressed
[   27.662060] random: sshd: uninitialized urandom read (32 bytes read)
[   27.748517] list_add corruption. prev->next should be next (ffff88021780e7a8), but was ffff88021fc208e0. (prev=ffff8802093f0490).
[   27.760338] ------------[ cut here ]------------
[   27.765061] kernel BUG at lib/list_debug.c:28!
[   27.769614] invalid opcode: 0000 [#1] SMP PTI
[   27.774081] CPU: 0 PID: 1880 Comm: kworker/0:3 Not tainted 4.18.0-rc5+ #30
[   27.781062] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   27.790401] Workqueue:            (null) (mm_percpu_wq)
[   27.795738] RIP: 0010:__list_add