[<ffffffff810dc6bb>] __do_page_fault+0x35b/0xa00 arch/x86/mm/fault.c:1245
 [<ffffffff810dcd87>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1308
 [<ffffffff83777608>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1021
------------[ cut here ]------------
WARNING: CPU: 1 PID: 195 at net/ipv4/af_inet.c:167 inet_sock_destruct+0x5f6/0x7b0 net/ipv4/af_inet.c:167()
Kernel panic - not syncing: panic_on_warn set ...

 [<ffffffff81006d84>] do_syscall_32_irqs_on arch/x86/entry/common.c:390 [inline]
 [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890 arch/x86/entry/common.c:457
 [<ffffffff83777b6a>] sysenter_flags_fixed+0xd/0x17
CPU: 1 PID: 195 Comm: kworker/1:1 Not tainted 4.4.112-g3fc4284 #25
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: sock_diag_events sock_diag_broadcast_destroy_work
 0000000000000000 6d4251dfeeccaca2 ffff8800bb097a18 ffffffff81d054ed
 ffffffff83843200 ffff8800bb097af0 ffffffff83cf4d20 0000000000000009
 00000000000000a7 ffff8800bb097ae0 ffffffff81419dca 0000000041b58ab3
Call Trace:
 [<ffffffff81d054ed>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d054ed>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81419dca>] panic+0x1aa/0x388 kernel/panic.c:112
 [<ffffffff8112d835>] warn_slowpath_common+0x125/0x140 kernel/panic.c:455
 [<ffffffff8112da99>] warn_slowpath_null+0x29/0x30 kernel/panic.c:492
 [<ffffffff831d4c86>] inet_sock_destruct+0x5f6/0x7b0 net/ipv4/af_inet.c:167
 [<ffffffff8345fb97>] l2tp_tunnel_destruct+0x357/0x5a0 net/l2tp/l2tp_core.c:1235
 [<ffffffff82dff42a>] sk_destruct+0x4a/0x4c0 net/core/sock.c:1447
 [<ffffffff82e9c41e>] sock_diag_broadcast_destroy_work+0x25e/0x380 net/core/sock_diag.c:153
 [<ffffffff8117fea7>] process_one_work+0x7d7/0x16e0 kernel/workqueue.c:2064
 [<ffffffff81180e8f>] worker_thread+0xdf/0xfe0 kernel/workqueue.c:2196
 [<ffffffff81190958>] kthread+0x268/0x300 kernel/kthread.c:211
 [<ffffffff837765df>] ret_from_fork+0x3f/0x70 arch/x86/entry/entry_64.S:494
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..