Kernel panic - not syncing: scheduling while atomic

CPU: 0 PID: 3 Comm: ksoftirqd/0 Tainted: G        W       4.9.94-g8683408 #1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
IPVS: length: 72 != 24
IPVS: set_ctl: invalid protocol: 0 0.0.0.5:20004 dh
IPVS: length: 72 != 24
IPVS: set_ctl: invalid protocol: 0 0.0.0.5:20004 dh
FAT-fs (loop2): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
 ffff8801d9af75e8 ffffffff81eb0aa9 ffffffff83a573e0 00000000ffffffff
 ffffffff839f8d00 0000000000000000 ffff8801d9ac3000 ffff8801d9af76a8
 ffffffff8141f845 0000000041b58ab3 ffffffff841b7b48 ffffffff8141f686
Call Trace:
 [<ffffffff81eb0aa9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81eb0aa9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8141f845>] panic+0x1bf/0x3bc kernel/panic.c:179
 [<ffffffff81422337>] __schedule_bug.cold.124+0x11e/0x14f kernel/sched/core.c:3320
 [<ffffffff839e1e37>] schedule_debug kernel/sched/core.c:3337 [inline]
 [<ffffffff839e1e37>] __schedule+0x1077/0x1bd0 kernel/sched/core.c:3438
 [<ffffffff839e2a0f>] schedule+0x7f/0x1b0 kernel/sched/core.c:3557
 [<ffffffff839eee21>] schedule_timeout+0x861/0xf70 kernel/time/timer.c:1768
 [<ffffffff839e5bd3>] do_wait_for_common kernel/sched/completion.c:75 [inline]
 [<ffffffff839e5bd3>] __wait_for_common kernel/sched/completion.c:93 [inline]
 [<ffffffff839e5bd3>] wait_for_common kernel/sched/completion.c:101 [inline]
 [<ffffffff839e5bd3>] wait_for_completion+0x203/0x2e0 kernel/sched/completion.c:122
 [<ffffffff81279ef7>] __wait_rcu_gp+0x137/0x1b0 kernel/rcu/update.c:369
 [<ffffffff8128205a>] synchronize_rcu.part.62+0xfa/0x110 kernel/rcu/tree_plugin.h:678
 [<ffffffff81282097>] synchronize_rcu+0x27/0x90 kernel/rcu/tree_plugin.h:679
 [<ffffffff836b57aa>] __l2tp_session_unhash+0x38a/0x520 net/l2tp/l2tp_core.c:1796
 [<ffffffff836b5b37>] l2tp_tunnel_closeall+0x1f7/0x350 net/l2tp/l2tp_core.c:1364
 [<ffffffff836b63f2>] l2tp_tunnel_destruct+0x2f2/0x590 net/l2tp/l2tp_core.c:1324
 [<ffffffff8301b095>] __sk_destruct+0x55/0x590 net/core/sock.c:1428
 [<ffffffff8128575e>] __rcu_reclaim kernel/rcu/rcu.h:118 [inline]
 [<ffffffff8128575e>] rcu_do_batch kernel/rcu/tree.c:2789 [inline]
 [<ffffffff8128575e>] invoke_rcu_callbacks kernel/rcu/tree.c:3053 [inline]
 [<ffffffff8128575e>] __rcu_process_callbacks kernel/rcu/tree.c:3020 [inline]
 [<ffffffff8128575e>] rcu_process_callbacks+0x8ae/0x12b0 kernel/rcu/tree.c:3037
 [<ffffffff839f8efb>] __do_softirq+0x20b/0x937 kernel/softirq.c:284
 [<ffffffff81148dce>] run_ksoftirqd+0x2e/0x60 kernel/softirq.c:676
 [<ffffffff811a5f09>] smpboot_thread_fn+0x5c9/0x900 kernel/smpboot.c:163
 [<ffffffff8119ad2d>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff839f24dc>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..