[   19.890885] random: sshd: uninitialized urandom read (32 bytes read, 31 bits of entropy available)
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.
[   20.514710] random: sshd: uninitialized urandom read (32 bytes read, 31 bits of entropy available)
[   20.763921] random: sshd: uninitialized urandom read (32 bytes read, 33 bits of entropy available)

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   21.751422] random: sshd: uninitialized urandom read (32 bytes read, 118 bits of entropy available)
[   31.230075] random: nonblocking pool is initialized
Warning: Permanently added '10.128.10.8' (ECDSA) to the list of known hosts.
2018/03/17 14:19:29 parsed 1 programs
2018/03/17 14:19:29 executed programs: 0
[   36.928592] IPVS: Creating netns size=2552 id=1
[   38.047954] kasan: CONFIG_KASAN_INLINE enabled
[   38.052378] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   38.065347] Dumping ftrace buffer:
[   38.068855]    (ftrace buffer empty)
[   38.072533] Modules linked in:
[   38.075816] CPU: 0 PID: 4037 Comm: syz-executor0 Not tainted 4.4.120-gd63fdf6 #29
[   38.083403] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   38.092924] task: ffff8801d8f4e000 task.stack: ffff8801d8600000
[   38.098951] RIP: 0010:[<ffffffff831aa241>]  [<ffffffff831aa241>] udp_queue_rcv_skb+0x191/0x1560
[   38.107990] RSP: 0018:ffff8801d86078b0  EFLAGS: 00010206
[   38.113406] RAX: dffffc0000000000 RBX: ffff8801d8738000 RCX: ffffffff831aa228
[   38.120645] RDX: 000000000000000c RSI: ffff8801c8ed8780 RDI: 0000000000000060
[   38.127883] RBP: ffff8801d86078f0 R08: 0000000000000001 R09: 0000000000000001
[   38.135124] R10: 0000000000000000 R11: 1ffff1003b0c0ee8 R12: ffff8801c8ed8780
[   38.142570] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801c8ed87d8
[   38.149813] FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000093b5900
[   38.158009] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   38.163861] CR2: 000000002082dff0 CR3: 00000001da27c000 CR4: 0000000000160670
[   38.171104] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   38.178345] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   38.185596] Stack:
[   38.187714]  ffff8801d8738088 ffff880100000001 ffff8801d8738088 dffffc0000000000
[   38.195682]  ffff8801d8738000 0000000000000000 ffffed003b0e7086 ffff8801c8ed8780
[   38.203651]  ffff8801d8607960 ffffffff82df8cb6 ffff8801d8738188 ffff8801d8738190
[   38.211614] Call Trace:
[   38.214176]  [<ffffffff82df8cb6>] release_sock+0x176/0x510
[   38.219768]  [<ffffffff831a3854>] udp_sendmsg+0x15c4/0x1c30
[   38.225451]  [<ffffffff81b4c7d0>] ? avc_has_perm_noaudit+0x460/0x460
[   38.231916]  [<ffffffff831a0090>] ? udp_push_pending_frames+0xe0/0xe0
[   38.238465]  [<ffffffff831a2290>] ? udp_seq_next+0x80/0x80
[   38.244058]  [<ffffffff81b68701>] ? sock_has_perm+0x1c1/0x400
[   38.249910]  [<ffffffff81b687df>] ? sock_has_perm+0x29f/0x400
[   38.255762]  [<ffffffff81b685df>] ? sock_has_perm+0x9f/0x400
[   38.261530]  [<ffffffff831d7c91>] ? inet_sendmsg+0x201/0x4c0
[   38.267303]  [<ffffffff831d7d4c>] inet_sendmsg+0x2bc/0x4c0
[   38.272904]  [<ffffffff831d7b03>] ? inet_sendmsg+0x73/0x4c0
[   38.278581]  [<ffffffff831d7a90>] ? inet_recvmsg+0x4c0/0x4c0
[   38.284346]  [<ffffffff82deba6a>] sock_sendmsg+0xca/0x110
[   38.289850]  [<ffffffff82dec9b8>] SYSC_sendto+0x2c8/0x340
[   38.295377]  [<ffffffff82dec6f0>] ? SYSC_connect+0x310/0x310
[   38.301144]  [<ffffffff8150e179>] ? do_huge_pmd_anonymous_page+0x549/0xa10
[   38.308126]  [<ffffffff83772e2c>] ? _raw_spin_unlock+0x2c/0x50
[   38.314067]  [<ffffffff812e2899>] ? compat_SyS_futex+0x1f9/0x2a0
[   38.320186]  [<ffffffff812e26a0>] ? compat_SyS_get_robust_list+0x300/0x300
[   38.327166]  [<ffffffff82deeeb0>] SyS_sendto+0x40/0x50
[   38.332411]  [<ffffffff82deee70>] ? SyS_getpeername+0x30/0x30
[   38.338264]  [<ffffffff81006d91>] do_fast_syscall_32+0x321/0x8a0
[   38.344382]  [<ffffffff837752ea>] sysenter_flags_fixed+0xd/0x17
[   38.350403] Code: 74 24 58 41 f6 c6 01 0f 85 7f 07 00 00 e8 28 6b 1b fe 49 83 e6 fe 48 b8 00 00 00 00 00 fc ff df 49 8d 7e 60 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 01 0f 8e 9f 0b 00 00 41 f6 46 60 04 
[   38.376915] RIP  [<ffffffff831aa241>] udp_queue_rcv_skb+0x191/0x1560
[   38.383495]  RSP <ffff8801d86078b0>
[   38.387129] ---[ end trace d60c2be4db73322e ]---
[   38.391867] Kernel panic - not syncing: Fatal exception in interrupt
[   38.398764] Dumping ftrace buffer:
[   38.402276]    (ftrace buffer empty)
[   38.405958] Kernel Offset: disabled
[   38.409554] Rebooting in 86400 seconds..