[....] 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[   13.480392] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   19.438020] random: sshd: uninitialized urandom read (32 bytes read)
[   19.762556] random: sshd: uninitialized urandom read (32 bytes read)
[   20.301227] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.28' (ECDSA) to the list of known hosts.
[   25.955182] urandom_read: 1 callbacks suppressed
[   25.955186] random: sshd: uninitialized urandom read (32 bytes read)
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
[   26.079324] ------------[ cut here ]------------
[   26.084142] WARNING: CPU: 0 PID: 3 at net/ipv4/af_inet.c:167 inet_sock_destruct+0x598/0x760
[   26.092632] Kernel panic - not syncing: panic_on_warn set ...
[   26.092632] 
[   26.099985] CPU: 0 PID: 3 Comm: ksoftirqd/0 Not tainted 4.9.124-g09eb2ba #83
[   26.107146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   26.116475]  ffff8801d99efa48 ffffffff81eb95e9 ffffffff83c48ac0 00000000ffffffff
[   26.124590]  0000000000000000 0000000000000000 00000000000000a7 ffff8801d99efb08
[   26.132611]  ffffffff81423eb5 0000000041b58ab3 ffffffff843bb8e8 ffffffff81423cf6
[   26.140636] Call Trace:
[   26.143214]  [<ffffffff81eb95e9>] dump_stack+0xc1/0x128
[   26.148566]  [<ffffffff81423eb5>] panic+0x1bf/0x3bc
[   26.153580]  [<ffffffff81423cf6>] ? add_taint.cold.6+0x16/0x16
[   26.159564]  [<ffffffff81f22230>] ? debug_object_deactivate+0x340/0x340
[   26.166811]  [<ffffffff81424186>] ? __warn.cold.9+0xa6/0x17f
[   26.172596]  [<ffffffff8342c878>] ? inet_sock_destruct+0x598/0x760
[   26.178918]  [<ffffffff814241a1>] __warn.cold.9+0xc1/0x17f
[   26.184549]  [<ffffffff811383bc>] warn_slowpath_null+0x2c/0x40
[   26.190516]  [<ffffffff8342c878>] inet_sock_destruct+0x598/0x760
[   26.196644]  [<ffffffff8342c2e0>] ? ipv4_mib_init_net+0x570/0x570
[   26.202861]  [<ffffffff836c5839>] l2tp_tunnel_destruct+0x339/0x590
[   26.209163]  [<ffffffff836c56aa>] ? l2tp_tunnel_destruct+0x1aa/0x590
[   26.215637]  [<ffffffff836c5500>] ? l2tp_tunnel_del_work+0x470/0x470
[   26.222118]  [<ffffffff830281f5>] __sk_destruct+0x55/0x590
[   26.229414]  [<ffffffff812899ee>] rcu_process_callbacks+0x8ae/0x12b0
[   26.235886]  [<ffffffff81289ace>] ? rcu_process_callbacks+0x98e/0x12b0
[   26.242527]  [<ffffffff830281a0>] ? sock_set_timeout+0x210/0x210
[   26.248705]  [<ffffffff83a085c0>] __do_softirq+0x210/0x940
[   26.254363]  [<ffffffff8114d2f0>] ? takeover_tasklets+0x780/0x780
[   26.260576]  [<ffffffff8114d320>] run_ksoftirqd+0x30/0x60
[   26.266088]  [<ffffffff811aa5a9>] smpboot_thread_fn+0x5c9/0x900
[   26.272125]  [<ffffffff811a9fe0>] ? sort_range+0x30/0x30
[   26.277554]  [<ffffffff8119ea2f>] ? __kthread_parkme+0xcf/0x240
[   26.283594]  [<ffffffff839f2109>] ? schedule+0x89/0x1b0
[   26.289083]  [<ffffffff8119ead5>] ? __kthread_parkme+0x175/0x240
[   26.295211]  [<ffffffff8119f3cd>] kthread+0x26d/0x300
[   26.300383]  [<ffffffff811a9fe0>] ? sort_range+0x30/0x30
[   26.305815]  [<ffffffff8119f160>] ? kthread_park+0xa0/0xa0
[   26.311421]  [<ffffffff83a01b04>] ? __switch_to_asm+0x34/0x70
[   26.317287]  [<ffffffff8119f160>] ? kthread_park+0xa0/0xa0
[   26.322893]  [<ffffffff8119f160>] ? kthread_park+0xa0/0xa0
[   26.328588]  [<ffffffff83a01b9c>] ret_from_fork+0x5c/0x70
[   26.334506] Dumping ftrace buffer:
[   26.338247]    (ftrace buffer empty)
[   26.341937] Kernel Offset: disabled
[   26.345548] Rebooting in 86400 seconds..