kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 125 Comm: kworker/u4:3 Not tainted 4.15.0-rc6-next-20180105+ #89
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:native_write_cr4+0x4/0x10 arch/x86/include/asm/special_insns.h:76
RSP: 0018:ffff8801db507ed0 EFLAGS: 00010006
RAX: ffff8801d98781c0 RBX: 00000000001606e0 RCX: ffffffff8115d7c2
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606e0
RBP: ffff8801db507ed0 R08: 0000000000000000 R09: 0000000000000003
R10: ffff8801d9f67ac8 R11: 0000000000000001 R12: 0000000000000006
R13: ffff8801d98781c0 R14: ffff8801db51d130 R15: ffff8801db51d130
FS:  0000000000000000(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000016e5cd8 CR3: 0000000005e22006 CR4: 00000000001626e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __write_cr4 arch/x86/include/asm/paravirt.h:76 [inline]
 __cr4_set arch/x86/include/asm/tlbflush.h:252 [inline]
 cr4_clear_bits arch/x86/include/asm/tlbflush.h:275 [inline]
 kvm_cpu_vmxoff arch/x86/kvm/vmx.c:3737 [inline]
 hardware_disable+0x34a/0x4b0 arch/x86/kvm/vmx.c:3743
 kvm_arch_hardware_disable+0x35/0xd0 arch/x86/kvm/x86.c:8110
 hardware_disable_nolock+0x30/0x40 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3284
 flush_smp_call_function_queue+0x165/0x420 kernel/smp.c:243
 generic_smp_call_function_single_interrupt+0x13/0x30 kernel/smp.c:192
 smp_call_function_single_interrupt+0x83/0x450 arch/x86/kernel/smp.c:295
 call_function_single_interrupt+0xa9/0xb0 arch/x86/entry/entry_64.S:942
 </IRQ>
RIP: 0010:debug_lockdep_rcu_enabled.part.1+0x0/0x60 kernel/rcu/update.c:922
RSP: 0018:ffff8801d9f67b10 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff04
RAX: 0000000000000001 RBX: ffffffff8584a7a0 RCX: ffffffff840ec124
RDX: 0000000000000004 RSI: 0000000000000109 RDI: ffffffff860f70e0
RBP: ffff8801d9f67b18 R08: 0000000000000000 R09: 0000000000000003
R10: ffff8801d9f67ac8 R11: 0000000000000001 R12: 0000000000000109
R13: 0000000000000000 R14: 0000000000022da1 R15: dffffc0000000000
 rcu_preempt_sleep_check include/linux/rcupdate.h:301 [inline]
 ___might_sleep+0x17/0x400 kernel/sched/core.c:6026
 inet_twsk_purge+0x227/0x500 net/ipv4/inet_timewait_sock.c:265
 dccp_v6_exit_batch+0x1a/0x20 net/dccp/ipv6.c:1112
 ops_exit_list.isra.6+0x100/0x150 net/core/net_namespace.c:145
 cleanup_net+0x3f3/0x8b0 net/core/net_namespace.c:484
 process_one_work+0x801/0x14a0 kernel/workqueue.c:2112
 worker_thread+0xe0/0x1010 kernel/workqueue.c:2246
 kthread+0x33c/0x400 kernel/kthread.c:238
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:524
Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 44 0f 20 c0 5d 
RIP: native_write_cr4+0x4/0x10 arch/x86/include/asm/special_insns.h:76 RSP: ffff8801db507ed0
---[ end trace dac3fb9989241f79 ]---