kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu
BUG: unable to handle kernel paging request at 0000000093592503
IP: lock_release+0x195/0xda0 kernel/locking/lockdep.c:4021
PGD 5e28067 P4D 5e28067 PUD 5e2a067 PMD 0 
Oops: 0002 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 3127 Comm: syz-executor4 Not tainted 4.15.0-rc1-mm1+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: 0000000068e41374 task.stack: 00000000552e2049
RIP: 0010:lock_release+0x195/0xda0 kernel/locking/lockdep.c:4021
RSP: 0018:ffff880199c8ecb8 EFLAGS: 00010046
RAX: 0000000000000007 RBX: 1ffff10033391d9c RCX: ffffffff81cf8bc2
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801ca1ecb44
RBP: ffff880199c8ee28 R08: 1ffffffff0d2bc5b R09: 0000000000000004
R10: 0000000000000000 R11: ffffffff8748cda0 R12: ffff8801ca1ec2c0
R13: ffff880199c8ee00 R14: ffffffff8600cdd8 R15: ffff8801ca1ec2c0
FS:  0000000000c9c940(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff8 CR3: 0000000199c23000 CR4: 00000000001426e0
Call Trace:
 __raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline]
 _raw_spin_unlock+0x1a/0x30 kernel/locking/spinlock.c:183
 spin_unlock include/linux/spinlock.h:355 [inline]
 __register_sysctl_table+0x7ce/0x10b0 fs/proc/proc_sysctl.c:1337
 register_net_sysctl+0x29/0x30 net/sysctl_net.c:120
 ipv6_sysctl_net_init+0x361/0x560 net/ipv6/sysctl_net_ipv6.c:207
 ops_init+0x10a/0x570 net/core/net_namespace.c:118
 setup_net+0x319/0x720 net/core/net_namespace.c:295
 copy_net_ns+0x27c/0x580 net/core/net_namespace.c:419
 create_new_namespaces+0x425/0x880 kernel/nsproxy.c:107
 copy_namespaces+0x340/0x400 kernel/nsproxy.c:165
 copy_process.part.35+0x2364/0x4b30 kernel/fork.c:1810
 copy_process kernel/fork.c:1620 [inline]
 _do_fork+0x1ef/0xf10 kernel/fork.c:2101
 SYSC_clone kernel/fork.c:2209 [inline]
 SyS_clone+0x37/0x50 kernel/fork.c:2203
 do_syscall_64+0x26c/0x920 arch/x86/entry/common.c:285
 entry_SYSCALL64_slow_path+0x25/0x25
RIP: 0033:0x455369
RSP: 002b:00007ffe77c18ad8 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffe77c18b90 RCX: 0000000000455369
RDX: 0000000000000000 RSI: 0000000000a6ffb0 RDI: 0000000074000000
RBP: 0000000000000000 R08: 0000000000000017 R09: 0000000000000017
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000040e8d0
R13: 000000000040e960 R14: 0000000000000000 R15: 0000000000000000
Code: 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 c4 08 00 00 41 c7 87 84 08 00 00 01 00 00 00 <cc> 1f 44 00 00 65 8b 05 cf d5 aa 7e 89 c0 48 0f a3 05 d5 6e 08 
RIP: lock_release+0x195/0xda0 kernel/locking/lockdep.c:4021 RSP: ffff880199c8ecb8
CR2: fffffffffffffff8
---[ end trace afd9f9b50cb8745b ]---