[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   14.724540] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.
[   15.225503] random: sshd: uninitialized urandom read (32 bytes read)
[   15.471522] random: sshd: uninitialized urandom read (32 bytes read)

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   16.137970] random: sshd: uninitialized urandom read (32 bytes read)
[   85.842205] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.9' (ECDSA) to the list of known hosts.
[   91.381680] random: sshd: uninitialized urandom read (32 bytes read)
[   91.466713] IPVS: ftp: loaded support on port[0] = 21
[   95.062342] ------------[ cut here ]------------
[   95.067143] do_IRQ(): syz-executor721 has overflown the kernel stack (cur:ffff8801cf4e0000,sp:ffff8801ce28fe88,irq stk top-bottom:ffff8801daf00080-ffff8801daf08000,exception stk top-bottom:fffffe0000038080-fffffe0000042000,ip:lock_acquire+0x293/0x540)
[   95.089526] WARNING: CPU: 1 PID: 6528 at arch/x86/kernel/irq_64.c:63 handle_irq+0x1fb/0x2e7
[   95.097987] Kernel panic - not syncing: panic_on_warn set ...
[   95.097987] 
[   95.105330] CPU: 1 PID: 6528 Comm: syz-executor721 Not tainted 4.18.0-rc3+ #48
[   95.112662] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   95.121991] Call Trace:
[   95.124559]  <IRQ>
[   95.126694]  dump_stack+0x1c9/0x2b4
[   95.130299]  ? dump_stack_print_info.cold.2+0x52/0x52
[   95.135479]  panic+0x238/0x4e7
[   95.138654]  ? add_taint.cold.5+0x16/0x16
[   95.142788]  ? __warn.cold.8+0x148/0x1ba
[   95.146826]  ? __warn.cold.8+0x117/0x1ba
[   95.150867]  ? handle_irq+0x1fb/0x2e7
[   95.154646]  __warn.cold.8+0x163/0x1ba
[   95.158509]  ? handle_irq+0x1fb/0x2e7
[   95.162287]  report_bug+0x252/0x2d0
[   95.165889]  do_error_trap+0x1fc/0x4d0
[   95.169753]  ? rcu_idle_enter+0x480/0x480
[   95.173877]  ? math_error+0x3e0/0x3e0
[   95.177657]  ? vprintk_default+0x28/0x30
[   95.181697]  ? vprintk_func+0x81/0xe7
[   95.185479]  ? printk+0xa7/0xcf
[   95.188741]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   95.193570]  do_invalid_op+0x1b/0x20
[   95.197268]  invalid_op+0x14/0x20
[   95.200696] RIP: 0010:handle_irq+0x1fb/0x2e7
[   95.205076] 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 
[   95.224190] RSP: 0018:ffff8801daf07f58 EFLAGS: 00010082
[   95.229529] RAX: 0000000000000000 RBX: ffff8801ce238480 RCX: 0000000000000000
[   95.236776] RDX: 0000000000010000 RSI: ffffffff81631851 RDI: 0000000000000001
[   95.244028] RBP: ffff8801daf07fb0 R08: ffff8801aae5c580 R09: ffffed003b5e3ec2
[   95.251274] R10: ffffed003b5e3ec2 R11: ffff8801daf1f617 R12: fffffe0000042000
[   95.258528] R13: fffffe0000038080 R14: 0000000000000027 R15: 0000000000000000
[   95.265783]  ? vprintk_func+0x81/0xe7
[   95.269563]  ? handle_irq+0x1fb/0x2e7
[   95.273340]  ? lock_acquire+0x293/0x540
[   95.277290]  ? rcu_irq_enter+0xd8/0x110
[   95.281240]  do_IRQ+0x78/0x190
[   95.284408]  common_interrupt+0xf/0xf
[   95.288184]  </IRQ>
[   95.290933] Dumping ftrace buffer:
[   95.294459]    (ftrace buffer empty)
[   95.298147] Kernel Offset: disabled
[   95.301750] Rebooting in 86400 seconds..