Starting mcstransd: 
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   20.188799] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available)
[?25l[?1c7[ ok 8[?25h[?0c.
[   21.058065] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available)
[   21.282109] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available)

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   22.289840] random: nonblocking pool is initialized
Warning: Permanently added '10.128.0.41' (ECDSA) to the list of known hosts.
2018/03/14 12:59:23 parsed 1 programs
2018/03/14 12:59:23 executed programs: 0
[   28.209318] IPVS: Creating netns size=2552 id=1
[   29.259195] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor0/4059
[   29.267604] caller is __this_cpu_preempt_check+0x1c/0x20
[   29.273393] CPU: 0 PID: 4059 Comm: syz-executor0 Not tainted 4.4.120-gd63fdf6 #29
[   29.280999] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   29.290327]  0000000000000000 581de3a108a59889 ffff8800b312f788 ffffffff81d0408d
[   29.298290]  0000000000000000 ffffffff839fe5a0 ffffffff83cefc20 ffff8800ba9be000
[   29.306259]  0000000000000003 ffff8800b312f7c8 ffffffff81d63fe4 ffffffff810002b8
[   29.314259] Call Trace:
[   29.316818]  [<ffffffff81d0408d>] dump_stack+0xc1/0x124
[   29.322159]  [<ffffffff81d63fe4>] check_preemption_disabled+0x1d4/0x200
[   29.328877]  [<ffffffff810002b8>] ? 0xffffffff810002b8
[   29.334120]  [<ffffffff81d6404c>] __this_cpu_preempt_check+0x1c/0x20
[   29.340583]  [<ffffffff8312b439>] tcp_try_coalesce+0x249/0x4d0
[   29.346521]  [<ffffffff8312b1f0>] ? tcp_parse_options+0x970/0x970
[   29.352719]  [<ffffffff82e217fc>] ? skb_copy_datagram_from_iter+0x38c/0x5a0
[   29.359787]  [<ffffffff831335b7>] tcp_queue_rcv+0x127/0x720
[   29.365465]  [<ffffffff8314ae8b>] tcp_send_rcvq+0x39b/0x450
[   29.371141]  [<ffffffff8314aaf0>] ? tcp_rcv_established+0x2230/0x2230
[   29.377687]  [<ffffffff8113bd00>] ? __local_bh_enable_ip+0x30/0xd0
[   29.383983]  [<ffffffff81236bdb>] ? trace_hardirqs_on_caller+0x38b/0x590
[   29.390793]  [<ffffffff82df4330>] ? lock_sock_nested+0x90/0x120
[   29.396817]  [<ffffffff81236ded>] ? trace_hardirqs_on+0xd/0x10
[   29.402756]  [<ffffffff8113bd3a>] ? __local_bh_enable_ip+0x6a/0xd0
[   29.409041]  [<ffffffff831220ef>] tcp_sendmsg+0x1e8f/0x2b10
[   29.414719]  [<ffffffff81237410>] ? debug_check_no_locks_freed+0x2c0/0x2c0
[   29.421699]  [<ffffffff81b68701>] ? sock_has_perm+0x1c1/0x400
[   29.427556]  [<ffffffff83120260>] ? tcp_sendpage+0x1830/0x1830
[   29.433497]  [<ffffffff831d7c91>] ? inet_sendmsg+0x201/0x4c0
[   29.439269]  [<ffffffff831d7d4c>] inet_sendmsg+0x2bc/0x4c0
[   29.444866]  [<ffffffff831d7b03>] ? inet_sendmsg+0x73/0x4c0
[   29.450542]  [<ffffffff831d7a90>] ? inet_recvmsg+0x4c0/0x4c0
[   29.456307]  [<ffffffff82deba6a>] sock_sendmsg+0xca/0x110
[   29.461821]  [<ffffffff82dec9b8>] SYSC_sendto+0x2c8/0x340
[   29.467325]  [<ffffffff82dec6f0>] ? SYSC_connect+0x310/0x310
[   29.473091]  [<ffffffff8150e179>] ? do_huge_pmd_anonymous_page+0x549/0xa10
[   29.480077]  [<ffffffff83772e2c>] ? _raw_spin_unlock+0x2c/0x50
[   29.486019]  [<ffffffff812e2899>] ? compat_SyS_futex+0x1f9/0x2a0
[   29.492138]  [<ffffffff812e26a0>] ? compat_SyS_get_robust_list+0x300/0x300
[   29.499128]  [<ffffffff82deeeb0>] SyS_sendto+0x40/0x50
[   29.504381]  [<ffffffff82deee70>] ? SyS_getpeername+0x30/0x30
[