[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   12.240137] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.
[   12.372104] random: sshd: uninitialized urandom read (32 bytes read)
[   12.552615] random: sshd: uninitialized urandom read (32 bytes read)
[   13.386659] random: sshd: uninitialized urandom read (32 bytes read)

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   26.858572] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.59' (ECDSA) to the list of known hosts.
[   32.279704] random: sshd: uninitialized urandom read (32 bytes read)
executing program
executing program
executing program
[   32.462111] ------------[ cut here ]------------
[   32.466924] WARNING: CPU: 1 PID: 17 at net/ipv4/af_inet.c:167 inet_sock_destruct+0x598/0x760
[   32.475515] Kernel panic - not syncing: panic_on_warn set ...
[   32.475515] 
[   32.483145] CPU: 1 PID: 17 Comm: ksoftirqd/1 Not tainted 4.9.103-g7fd4075 #39
[   32.490560] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.499980]  ffff8801d9abfa48 ffffffff81eb34a9 ffffffff83c48b40 00000000ffffffff
[   32.508077]  0000000000000000 0000000000000001 00000000000000a7 ffff8801d9abfb08
[   32.516128]  ffffffff81421aa5 0000000041b58ab3 ffffffff843b94a8 ffffffff814218e6
[   32.524354] Call Trace:
[   32.529561]  [<ffffffff81eb34a9>] dump_stack+0xc1/0x128
[   32.535082]  [<ffffffff81421aa5>] panic+0x1bf/0x3bc
[   32.540086]  [<ffffffff814218e6>] ? add_taint.cold.6+0x16/0x16
[   32.546134]  [<ffffffff81421d76>] ? __warn.cold.9+0xa6/0x17f
[   32.551919]  [<ffffffff83423608>] ? inet_sock_destruct+0x598/0x760
[   32.558224]  [<ffffffff81421d91>] __warn.cold.9+0xc1/0x17f
[   32.563836]  [<ffffffff836bb88f>] ? l2tp_tunnel_closeall+0x2af/0x350
[   32.570302]  [<ffffffff8113665c>] warn_slowpath_null+0x2c/0x40
[   32.576245]  [<ffffffff83423608>] inet_sock_destruct+0x598/0x760
[   32.582366]  [<ffffffff83423070>] ? ipv4_mib_init_net+0x570/0x570
[   32.588578]  [<ffffffff836bc0d9>] l2tp_tunnel_destruct+0x339/0x590
[   32.594876]  [<ffffffff836bbf4a>] ? l2tp_tunnel_destruct+0x1aa/0x590
[   32.601344]  [<ffffffff836bbda0>] ? l2tp_tunnel_del_work+0x470/0x470
[   32.607819]  [<ffffffff83020095>] __sk_destruct+0x55/0x590
[   32.613417]  [<ffffffff812878de>] rcu_process_callbacks+0x8ae/0x12b0
[   32.619885]  [<ffffffff812879be>] ? rcu_process_callbacks+0x98e/0x12b0
[   32.626614]  [<ffffffff83020040>] ? sock_set_timeout+0x210/0x210
[   32.632732]  [<ffffffff839febfb>] __do_softirq+0x20b/0x937
[   32.638329]  [<ffffffff8114ae20>] ? takeover_tasklets+0x780/0x780
[   32.644558]  [<ffffffff8114ae4e>] run_ksoftirqd+0x2e/0x60
[   32.650069]  [<ffffffff811a8089>] smpboot_thread_fn+0x5c9/0x900
[   32.656097]  [<ffffffff811a7ac0>] ? sort_range+0x30/0x30
[   32.661519]  [<ffffffff8119c54f>] ? __kthread_parkme+0xcf/0x240
[   32.667550]  [<ffffffff839e8729>] ? schedule+0x89/0x1b0
[   32.672897]  [<ffffffff8119c5f5>] ? __kthread_parkme+0x175/0x240
[   32.679015]  [<ffffffff8119cead>] kthread+0x26d/0x300
[   32.684181]  [<ffffffff811a7ac0>] ? sort_range+0x30/0x30
[   32.689602]  [<ffffffff8119cc40>] ? kthread_park+0xa0/0xa0
[   32.695200]  [<ffffffff8119cc40>] ? kthread_park+0xa0/0xa0
[   32.700798]  [<ffffffff8119cc40>] ? kthread_park+0xa0/0xa0
[   32.706395]  [<ffffffff839f81dc>] ret_from_fork+0x5c/0x70
[   32.712919] Dumping ftrace buffer:
[   32.716487]    (ftrace buffer empty)
[   32.720171] Kernel Offset: disabled
[   32.723780] Rebooting in 86400 seconds..