kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu
WARNING: CPU: 1 PID: 7359 at arch/x86/kvm/x86.c:7309 kvm_arch_vcpu_ioctl_run+0x9b/0x22f0 arch/x86/kvm/x86.c:7309
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 7359 Comm: syz-executor0 Not tainted 4.15.0-rc3-next-20171214+ #67
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xe9/0x14b lib/dump_stack.c:53
 panic+0x10e/0x2f8 kernel/panic.c:183
 __warn+0x14e/0x150 kernel/panic.c:547
 report_bug+0x11e/0x1a0 lib/bug.c:184
 fixup_bug.part.11+0x17/0x30 arch/x86/kernel/traps.c:177
 fixup_bug arch/x86/kernel/traps.c:246 [inline]
 do_error_trap+0x14a/0x180 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x22/0x40 arch/x86/entry/entry_64.S:1079
RIP: 0010:kvm_arch_vcpu_ioctl_run+0x9b/0x22f0 arch/x86/kvm/x86.c:7309
RSP: 0018:ffffc90005adfd40 EFLAGS: 00010293
RAX: ffff8802136527c0 RBX: ffff88020bed5000 RCX: ffffffff8104d79b
RDX: 0000000000000000 RSI: ffffffff83080700 RDI: 0000000000000286
RBP: ffffc90005adfde0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90005adfdf8 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000ae80 R14: ffff88020f778140 R15: ffff8802136527c0
 kvm_vcpu_ioctl+0x34f/0x820 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2563
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0xaf/0x840 fs/ioctl.c:686
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a09
RSP: 002b:00007fb72331ec58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000071c010 RCX: 0000000000452a09
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000004
RBP: 0000000000000241 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f06b8
R13: 00000000ffffffff R14: 00007fb72331f6d4 R15: 0000000000000006
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..