[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   21.631460] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.
[   21.822702] random: sshd: uninitialized urandom read (32 bytes read)
[   22.192369] random: sshd: uninitialized urandom read (32 bytes read)

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   23.060945] random: sshd: uninitialized urandom read (32 bytes read)
[   35.746263] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.4' (ECDSA) to the list of known hosts.
[   41.203582] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[   41.345829] IPVS: ftp: loaded support on port[0] = 21
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
[   41.889047] ------------[ cut here ]------------
[   41.893879] do_IRQ(): syz-executor930 has overflown the kernel stack (cur:ffff8801aadf0000,sp:ffff8801a8dda0c0,irq stk top-bottom:ffff8801daf00080-ffff8801daf08000,exception stk top-bottom:fffffe0000038080-fffffe0000042000,ip:lock_release+0x505/0xa30)
[   41.916533] WARNING: CPU: 1 PID: 4681 at arch/x86/kernel/irq_64.c:63 handle_irq+0x1fb/0x2e7
[   41.925124] Kernel panic - not syncing: panic_on_warn set ...
[   41.925124] 
[   41.932491] CPU: 1 PID: 4681 Comm: syz-executor930 Not tainted 4.18.0-rc3+ #1
[   41.940391] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   41.949835] Call Trace:
[   41.952415]  <IRQ>
[   41.954605]  dump_stack+0x1c9/0x2b4
[   41.958259]  ? dump_stack_print_info.cold.2+0x52/0x52
[   41.963473]  panic+0x238/0x4e7
[   41.966795]  ? add_taint.cold.5+0x16/0x16
[   41.970951]  ? __warn.cold.8+0x148/0x1ba
[   41.975032]  ? __warn.cold.8+0x117/0x1ba
[   41.979097]  ? handle_irq+0x1fb/0x2e7
[   41.982971]  __warn.cold.8+0x163/0x1ba
[   41.986854]  ? handle_irq+0x1fb/0x2e7
[   41.990649]  report_bug+0x252/0x2d0
[   41.994302]  do_error_trap+0x1fc/0x4d0
[   41.998189]  ? rcu_idle_enter+0x480/0x480
[   42.002341]  ? math_error+0x3e0/0x3e0
[   42.006152]  ? vprintk_default+0x28/0x30
[   42.010209]  ? vprintk_func+0x81/0xe7
[   42.014095]  ? printk+0xa7/0xcf
[   42.017372]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   42.022231]  do_invalid_op+0x1b/0x20
[   42.025937]  invalid_op+0x14/0x20
[   42.029389] RIP: 0010:handle_irq+0x1fb/0x2e7
[   42.033794] Code: 00 00 ff b6 80 00 00 00 48 c7 c7 40 bc e4 87 41 54 41 55 65 48 8b 04 25 40 ee 01 00 48 05 68 06 00 00 48 89 c6 e8 85 b3 1c 00 <0f> 0b 48 83 c4 18 e9 3f ff ff ff 48 89 75 e0 e8 a1 69 8f 00 48 8b 
[   42.053162] RSP: 0018:ffff8801daf07f58 EFLAGS: 00010082
[   42.058717] RAX: 0000000000000000 RBX: ffff8801ce228d80 RCX: 0000000000000000
[   42.066349] RDX: 0000000000010000 RSI: ffffffff81631851 RDI: 0000000000000001
[   42.073671] RBP: ffff8801daf07fb0 R08: ffff8801aaeba000 R09: ffffed003b5e3ec2
[   42.081574] R10: ffffed003b5e3ec2 R11: ffff8801daf1f617 R12: fffffe0000042000
[   42.088880] R13: fffffe0000038080 R14: 000000000000002a R15: 0000000000000000
[   42.096889]  ? vprintk_func+0x81/0xe7
[   42.100715]  ? handle_irq+0x1fb/0x2e7
[   42.104535]  ? lock_release+0x505/0xa30
[   42.108525]  do_IRQ+0x78/0x190
[   42.112254]  common_interrupt+0xf/0xf
[   42.117172]  </IRQ>
[   42.120899] Dumping ftrace buffer:
[   42.124688]    (ftrace buffer empty)
[   42.128422] Kernel Offset: disabled
[   42.132261] Rebooting in 86400 seconds..