[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   13.589455] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   17.148054] random: sshd: uninitialized urandom read (32 bytes read)
[   17.706960] random: sshd: uninitialized urandom read (32 bytes read)
[   18.463314] random: sshd: uninitialized urandom read (32 bytes read)
[   18.604288] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.43' (ECDSA) to the list of known hosts.
[   23.974072] 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
[   24.096226] ------------[ cut here ]------------
[   24.101012] WARNING: CPU: 1 PID: 0 at net/ipv4/af_inet.c:167 inet_sock_destruct+0x598/0x760
[   24.109482] Kernel panic - not syncing: panic_on_warn set ...
[   24.109482] 
[   24.116824] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.9.96-g71fce1e #13
[   24.123718] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   24.133046]  ffff8801db307cc0 ffffffff81eb0b69 ffffffff83a484a0 00000000ffffffff
[   24.141025]  0000000000000000 0000000000000001 00000000000000a7 ffff8801db307d80
[   24.149000]  ffffffff8141f975 0000000041b58ab3 ffffffff841b8030 ffffffff8141f7b6
[   24.156973] Call Trace:
[   24.159523]  <IRQ> [   24.161562]  [<ffffffff81eb0b69>] dump_stack+0xc1/0x128
[   24.166913]  [<ffffffff8141f975>] panic+0x1bf/0x3bc
[   24.171898]  [<ffffffff8141f7b6>] ? add_taint.cold.6+0x16/0x16
[   24.177840]  [<ffffffff8141fc46>] ? __warn.cold.9+0xa6/0x17f
[   24.183616]  [<ffffffff8341ec28>] ? inet_sock_destruct+0x598/0x760
[   24.189901]  [<ffffffff8141fc61>] __warn.cold.9+0xc1/0x17f
[   24.195497]  [<ffffffff8113461c>] warn_slowpath_null+0x2c/0x40
[   24.201441]  [<ffffffff8341ec28>] inet_sock_destruct+0x598/0x760
[   24.207555]  [<ffffffff8341e690>] ? ipv4_mib_init_net+0x570/0x570
[   24.213756]  [<ffffffff836b7439>] l2tp_tunnel_destruct+0x339/0x590
[   24.220044]  [<ffffffff836b72aa>] ? l2tp_tunnel_destruct+0x1aa/0x590
[   24.226509]  [<ffffffff836b7100>] ? l2tp_tunnel_del_work+0x470/0x470
[   24.232987]  [<ffffffff8301c095>] __sk_destruct+0x55/0x590
[   24.238585]  [<ffffffff8128578e>] rcu_process_callbacks+0x8ae/0x12b0
[   24.245051]  [<ffffffff8128586e>] ? rcu_process_callbacks+0x98e/0x12b0
[   24.251687]  [<ffffffff8301c040>] ? sock_set_timeout+0x210/0x210
[   24.257805]  [<ffffffff839f9efb>] __do_softirq+0x20b/0x937
[   24.263405]  [<ffffffff81149037>] irq_exit+0x147/0x190
[   24.268650]  [<ffffffff839f8ae1>] smp_apic_timer_interrupt+0x81/0xa0
[   24.275110]  [<ffffffff839f4c70>] apic_timer_interrupt+0xa0/0xb0
[   24.281219]  <EOI> [   24.283258]  [<ffffffff839f1f16>] ? native_safe_halt+0x6/0x10
[   24.289130]  [<ffffffff81233e1d>] ? trace_hardirqs_on+0xd/0x10
[   24.295069]  [<ffffffff839f1555>] default_idle+0x55/0x360
[   24.300579]  [<ffffffff81069fa0>] arch_cpu_idle+0x10/0x20
[   24.306087]  [<ffffffff839f2375>] default_idle_call+0x45/0x60
[   24.311941]  [<ffffffff81220e65>] cpu_startup_entry+0x2b5/0x380
[   24.317978]  [<ffffffff81220bb0>] ? cpu_in_idle+0x20/0x20
[   24.323484]  [<ffffffff810ad1f3>] start_secondary+0x323/0x400
[   24.329339]  [<ffffffff810aced0>] ? set_cpu_sibling_map+0x1300/0x1300
[   24.336496] Dumping ftrace buffer:
[   24.340056]    (ftrace buffer empty)
[   24.343737] Kernel Offset: disabled
[   24.347345] Rebooting in 86400 seconds..