[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   12.197215] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.
[   12.933581] random: sshd: uninitialized urandom read (32 bytes read)
[   13.154285] random: sshd: uninitialized urandom read (32 bytes read)

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   14.261773] random: sshd: uninitialized urandom read (32 bytes read)
[   21.237035] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.39' (ECDSA) to the list of known hosts.
[   26.736080] random: sshd: uninitialized urandom read (32 bytes read)
executing program
executing program
executing program
[   26.918332] ------------[ cut here ]------------
[   26.923110] WARNING: CPU: 1 PID: 0 at net/ipv4/af_inet.c:167 inet_sock_destruct+0x598/0x760
[   26.931594] Kernel panic - not syncing: panic_on_warn set ...
[   26.931594] 
[   26.938937] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.9.110-g00a0bcb #4
[   26.945838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   26.955170]  ffff8801db307cc0 ffffffff81eb2329 ffffffff83c48960 00000000ffffffff
[   26.963160]  0000000000000000 0000000000000001 00000000000000a7 ffff8801db307d80
[   26.971182]  ffffffff81421925 0000000041b58ab3 ffffffff843ba880 ffffffff81421766
[   26.979189] Call Trace:
[   26.981747]  <IRQ> [   26.983785]  [<ffffffff81eb2329>] dump_stack+0xc1/0x128
[   26.989145]  [<ffffffff81421925>] panic+0x1bf/0x3bc
[   26.994143]  [<ffffffff81421766>] ? add_taint.cold.6+0x16/0x16
[   27.000088]  [<ffffffff81421bf6>] ? __warn.cold.9+0xa6/0x17f
[   27.005865]  [<ffffffff83422bc8>] ? inet_sock_destruct+0x598/0x760
[   27.012252]  [<ffffffff81421c11>] __warn.cold.9+0xc1/0x17f
[   27.017854]  [<ffffffff836bb31f>] ? l2tp_tunnel_closeall+0x2af/0x350
[   27.024329]  [<ffffffff811367cc>] warn_slowpath_null+0x2c/0x40
[   27.030274]  [<ffffffff83422bc8>] inet_sock_destruct+0x598/0x760
[   27.036392]  [<ffffffff83422630>] ? ipv4_mib_init_net+0x570/0x570
[   27.042599]  [<ffffffff836bbb69>] l2tp_tunnel_destruct+0x339/0x590
[   27.048892]  [<ffffffff836bb9da>] ? l2tp_tunnel_destruct+0x1aa/0x590
[   27.055360]  [<ffffffff836bb830>] ? l2tp_tunnel_del_work+0x470/0x470
[   27.061825]  [<ffffffff8301f095>] __sk_destruct+0x55/0x590
[   27.067424]  [<ffffffff8128769e>] rcu_process_callbacks+0x8ae/0x12b0
[   27.073891]  [<ffffffff8128777e>] ? rcu_process_callbacks+0x98e/0x12b0
[   27.080536]  [<ffffffff8301f040>] ? sock_set_timeout+0x210/0x210
[   27.086658]  [<ffffffff839fe8bb>] __do_softirq+0x20b/0x937
[   27.092268]  [<ffffffff8114b227>] irq_exit+0x147/0x190
[   27.097527]  [<ffffffff839fd4a1>] smp_apic_timer_interrupt+0x81/0xa0
[   27.103998]  [<ffffffff839f9630>] apic_timer_interrupt+0xa0/0xb0
[   27.110112]  <EOI> [   27.112152]  [<ffffffff839f68f6>] ? native_safe_halt+0x6/0x10
[   27.118210]  [<ffffffff81235bfd>] ? trace_hardirqs_on+0xd/0x10
[   27.124157]  [<ffffffff839f5f35>] default_idle+0x55/0x360
[   27.129669]  [<ffffffff8106ad10>] arch_cpu_idle+0x10/0x20
[   27.135178]  [<ffffffff839f6d55>] default_idle_call+0x45/0x60
[   27.141743]  [<ffffffff81223185>] cpu_startup_entry+0x2b5/0x380
[   27.147787]  [<ffffffff81222ed0>] ? cpu_in_idle+0x20/0x20
[   27.153302]  [<ffffffff810ae958>] start_secondary+0x328/0x400
[   27.159161]  [<ffffffff810ae630>] ? set_cpu_sibling_map+0x1300/0x1300
[   27.166352] Dumping ftrace buffer:
[   27.169917]    (ftrace buffer empty)
[   27.173615] Kernel Offset: disabled
[   27.177230] Rebooting in 86400 seconds..