[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   21.819191] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available)
[?25l[?1c7[ ok 8[?25h[?0c.
[   22.870511] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available)

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   23.322292] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available)
[   24.394001] random: sshd: uninitialized urandom read (32 bytes read, 126 bits of entropy available)
[   24.499638] random: nonblocking pool is initialized
Warning: Permanently added '10.128.10.21' (ECDSA) to the list of known hosts.
2018/04/27 19:43:56 parsed 1 programs
2018/04/27 19:43:56 executed programs: 0
[   30.400531] IPVS: Creating netns size=2552 id=1
[   30.443455] ------------[ cut here ]------------
[   30.448305] WARNING: CPU: 0 PID: 3853 at net/packet/af_packet.c:4122 packet_set_ring+0x131c/0x1840()
[   30.457573] Tx-ring is not supported.
[   30.461537] Kernel panic - not syncing: panic_on_warn set ...
[   30.461537] 
[   30.468890] CPU: 0 PID: 3853 Comm: syz-executor0 Not tainted 4.4.129-g23eaecc #26
[   30.476488] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   30.485813]  0000000000000000 a169821b374bd0b8 ffff8800adef7908 ffffffff81e0dc8d
[   30.493817]  ffffffff83a43ec0 ffff8800bb0a4800 ffffffff83f3c720 0000000000000009
[   30.501792]  000000000000101a ffff8800adef79c8 ffffffff81409ed4 0000000041b58ab3
[   30.509774] Call Trace:
[   30.512340]  [<ffffffff81e0dc8d>] dump_stack+0xc1/0x124
[   30.517678]  [<ffffffff81409ed4>] panic+0x19e/0x38d
[   30.522670]  [<ffffffff81409d36>] ? add_taint.cold.4+0x16/0x16
[   30.528611]  [<ffffffff8140a0dd>] ? warn_slowpath_common.cold.6+0x5/0x20
[   30.535514]  [<ffffffff8140a0f8>] warn_slowpath_common.cold.6+0x20/0x20
[   30.542251]  [<ffffffff83569d5c>] ? packet_set_ring+0x131c/0x1840
[   30.548456]  [<ffffffff8112feef>] warn_slowpath_fmt+0xbf/0x100
[   30.554402]  [<ffffffff8112fe30>] ? warn_slowpath_common+0x120/0x120
[   30.560880]  [<ffffffff8122e69b>] ? trace_hardirqs_on_caller+0x38b/0x590
[   30.567706]  [<ffffffff82f24bd0>] ? lock_sock_nested+0x90/0x120
[   30.573736]  [<ffffffff8122e8ad>] ? trace_hardirqs_on+0xd/0x10
[   30.579679]  [<ffffffff8113d8fa>] ? __local_bh_enable_ip+0x6a/0xd0
[   30.585967]  [<ffffffff83569d5c>] packet_set_ring+0x131c/0x1840
[   30.591995]  [<ffffffff81003017>] ? trace_hardirqs_on_thunk+0x17/0x19
[   30.598548]  [<ffffffff83568a40>] ? packet_read_pending.isra.64.part.65+0x170/0x170
[   30.606315]  [<ffffffff8356b222>] packet_setsockopt+0x5c2/0x2260
[   30.612430]  [<ffffffff8356ac60>] ? packet_release+0x9e0/0x9e0
[   30.618375]  [<ffffffff81c6e76f>] ? sock_has_perm+0x29f/0x400
[   30.624229]  [<ffffffff81c6e56f>] ? sock_has_perm+0x9f/0x400
[   30.629996]  [<ffffffff81c6e4d0>] ? selinux_file_send_sigiotask+0x310/0x310
[   30.637069]  [<ffffffff81caf537>] ? selinux_netlbl_socket_setsockopt+0x97/0x340
[   30.644488]  [<ffffffff81caf4a0>] ? selinux_netlbl_sock_rcv_skb+0x400/0x400
[   30.651569]  [<ffffffff81c6ed2d>] ? selinux_socket_setsockopt+0x6d/0x80
[   30.658293]  [<ffffffff81c4fdff>] ? security_socket_setsockopt+0x8f/0xc0
[   30.665103]  [<ffffffff830096a3>] compat_SyS_setsockopt+0x233/0x2a0
[   30.671482]  [<ffffffff83009470>] ? scm_detach_fds_compat+0x3b0/0x3b0
[   30.678049]  [<ffffffff8148822e>] ? vmacache_update+0xfe/0x130
[   30.683992]  [<ffffffff81006b4b>] ? do_fast_syscall_32+0xdb/0x8b0
[   30.690200]  [<ffffffff83009470>] ? scm_detach_fds_compat+0x3b0/0x3b0
[   30.696755]  [<ffffffff81006d96>] do_fast_syscall_32+0x326/0x8b0
[   30.702875]  [<ffffffff838c0a2a>] sysenter_flags_fixed+0xd/0x17
[   30.709387] Dumping ftrace buffer:
[   30.712940]    (ftrace buffer empty)
[   30.716624] Kernel Offset: disabled
[   30.720232] Rebooting in 86400 seconds..