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: 0 PID: 208 Comm: kworker/u4:4 Not tainted 4.15.0-rc4-next-20171221+ #78
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:ffff8801db207ca8 EFLAGS: 00010006
RAX: ffff8801d900c000 RBX: 00000000001606f0 RCX: ffffffff811a47f2
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606f0
RBP: ffff8801db207ca8 R08: 1ffff1003b203d63 R09: 0000000000000002
R10: ffff8801d901efd8 R11: 0000000000000000 R12: 0000000000000006
R13: ffff8801d900c000 R14: ffff8801db21a130 R15: ffff8801db21a130
FS:  0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000016c1cd8 CR3: 0000000006422006 CR4: 00000000001626f0
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:3283
 flush_smp_call_function_queue+0x1f4/0x570 kernel/smp.c:243
 generic_smp_call_function_single_interrupt+0x13/0x30 kernel/smp.c:192
 smp_call_function_single_interrupt+0x103/0x640 arch/x86/kernel/smp.c:295
 call_function_single_interrupt+0xa9/0xb0 arch/x86/entry/entry_64.S:942
 </IRQ>
RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline]
RIP: 0010:inet_twsk_purge+0x3ea/0x770 net/ipv4/inet_timewait_sock.c:268
RSP: 0018:ffff8801d901f108 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff04
RAX: ffff8801d34b7d00 RBX: ffffffff88478900 RCX: ffffffff84531360
RDX: 0000000000000000 RSI: 000000002b278d98 RDI: ffff8801db220750
RBP: ffff8801d901f2b0 R08: 1ffff1003b203d63 R09: 0000000000000002
R10: ffff8801d901efd8 R11: 0000000000000000 R12: 000000000002df41
R13: ffff8801d901f530 R14: ffff8801d901f288 R15: dffffc0000000000
 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+0x5c7/0xb50 net/core/net_namespace.c:484
 process_one_work+0xbbf/0x1af0 kernel/workqueue.c:2112
 worker_thread+0x223/0x1990 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: ffff8801db207ca8
---[ end trace 3797a659ea82cf74 ]---