Kernel panic - not syncing: scheduling while atomic CPU: 1 PID: 17 Comm: ksoftirqd/1 Tainted: G W 4.9.117-g8b21e85 #19 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801d9abf5e8 ffffffff81eb4be9 ffffffff83c57900 00000000ffffffff ffffffff83a03600 0000000000000001 ffff8801d9aa3000 ffff8801d9abf6a8 ffffffff81421c85 0000000041b58ab3 ffffffff843bc020 ffffffff81421ac6 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] panic+0x1bf/0x3bc kernel/panic.c:179 [] __schedule_bug.cold.124+0x11e/0x14f kernel/sched/core.c:3316 [] schedule_debug kernel/sched/core.c:3333 [inline] [] __schedule+0x1077/0x1bd0 kernel/sched/core.c:3434 [] schedule+0x7f/0x1b0 kernel/sched/core.c:3553 [] schedule_timeout+0x861/0xf70 kernel/time/timer.c:1768 [] do_wait_for_common kernel/sched/completion.c:75 [inline] [] __wait_for_common kernel/sched/completion.c:93 [inline] [] wait_for_common kernel/sched/completion.c:101 [inline] [] wait_for_completion+0x203/0x2e0 kernel/sched/completion.c:122 [] __wait_rcu_gp+0x137/0x1b0 kernel/rcu/update.c:369 [] synchronize_rcu.part.62+0xfa/0x110 kernel/rcu/tree_plugin.h:684 [] synchronize_rcu+0x27/0x90 kernel/rcu/tree_plugin.h:685 [] __l2tp_session_unhash+0x38a/0x520 net/l2tp/l2tp_core.c:1796 [] l2tp_tunnel_closeall+0x1f7/0x350 net/l2tp/l2tp_core.c:1364 [] l2tp_tunnel_destruct+0x2f2/0x590 net/l2tp/l2tp_core.c:1324 [] __sk_destruct+0x55/0x590 net/core/sock.c:1428 [] __rcu_reclaim kernel/rcu/rcu.h:118 [inline] [] rcu_do_batch kernel/rcu/tree.c:2789 [inline] [] invoke_rcu_callbacks kernel/rcu/tree.c:3053 [inline] [] __rcu_process_callbacks kernel/rcu/tree.c:3020 [inline] [] rcu_process_callbacks+0x8ae/0x12b0 kernel/rcu/tree.c:3037 [] __do_softirq+0x20b/0x937 kernel/softirq.c:284 [] run_ksoftirqd+0x2e/0x60 kernel/softirq.c:676 [] smpboot_thread_fn+0x5c9/0x900 kernel/smpboot.c:163 [] kthread+0x26d/0x300 kernel/kthread.c:211 [] 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..