[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   18.464011] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   23.397868] random: sshd: uninitialized urandom read (32 bytes read)
[   23.714293] random: sshd: uninitialized urandom read (32 bytes read)
[   24.573010] random: sshd: uninitialized urandom read (32 bytes read)
[   24.733274] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.4' (ECDSA) to the list of known hosts.
[   30.175912] random: sshd: uninitialized urandom read (32 bytes read)
[   30.284290] BUG: unable to handle kernel paging request at ffffebe000000008
[   30.291440] PGD 0 P4D 0 
[   30.294107] Oops: 0000 [#1] SMP KASAN
[   30.297911] CPU: 1 PID: 4392 Comm: syz-executor695 Not tainted 4.18.0-rc6+ #165
[   30.305361] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   30.314730] RIP: 0010:kfree+0xa0/0x260
[   30.318596] Code: 82 cb 01 00 00 48 ba 00 00 00 80 ff 77 00 00 48 01 c2 48 89 df 48 b8 00 00 00 00 00 ea ff ff 48 c1 ea 0c 48 c1 e2 06 48 01 c2 <48> 8b 42 08 a8 01 48 8d 48 ff 48