kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu
WARNING: CPU: 1 PID: 4303 at arch/x86/kvm/x86.c:7375 kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 arch/x86/kvm/x86.c:7375
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 4303 Comm: syz-executor3 Not tainted 4.15.0-rc7-mm1+ #54
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+0x194/0x257 lib/dump_stack.c:53
WARNING: CPU: 0 PID: 4304 at arch/x86/kvm/x86.c:7375 kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 arch/x86/kvm/x86.c:7375
Modules linked in:
CPU: 0 PID: 4304 Comm: syz-executor0 Not tainted 4.15.0-rc7-mm1+ #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 arch/x86/kvm/x86.c:7375
RSP: 0018:ffff8801d47ff6b0 EFLAGS: 00010293
RAX: ffff8801d5bae200 RBX: ffff8801c20a8000 RCX: ffffffff810df8c7
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801d57f16a0
RBP: ffff8801d47ffa40 R08: 1ffff1003aafed6b R09: 0000000000000001
R10: ffff8801d47ff690 R11: 0000000000000004 R12: 0000000000000000
R13: ffff8801bf740f00 R14: ffff8801d57f1480 R15: ffff8801d57f1480
FS:  00007f4b38929700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f61517ec000 CR3: 00000001c0b66004 CR4: 00000000001626f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kvm_vcpu_ioctl+0x6f1/0xff0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2555
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x452ac9
RSP: 002b:00007f4b38928c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000004
RBP: 00000000000003aa R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f3890
R13: 00000000ffffffff R14: 00007f4b389296d4 R15: 0000000000000000
Code: 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 00 59 00 00 49 83 bf 98 2b 00 00 00 0f 84 71 21 00 00 e8 59 a6 62 00 <0f> ff e8 52 a6 62 00 48 8d 7b 01 48 b8 00 00 00 00 00 fc ff df 
---[ end trace e282c051b8020e55 ]---
 panic+0x1e4/0x41c kernel/panic.c:183
 __warn+0x1dc/0x200 kernel/panic.c:547
 report_bug+0x211/0x2d0 lib/bug.c:184
 fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
 fixup_bug arch/x86/kernel/traps.c:247 [inline]
 do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x22/0x40 arch/x86/entry/entry_64.S:1102
RIP: 0010:kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 arch/x86/kvm/x86.c:7375
RSP: 0018:ffff8801d4aef6b0 EFLAGS: 00010293
RAX: ffff8801d63be2c0 RBX: ffff8801cbc84000 RCX: ffffffff810df8c7
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801d4169a60
RBP: ffff8801d4aefa40 R08: 1ffff1003a82dde3 R09: 0000000000000001
R10: ffff8801d4aef690 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801d801c980 R14: ffff8801d4169840 R15: ffff8801d4169840
 kvm_vcpu_ioctl+0x6f1/0xff0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2555
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x452ac9
RSP: 002b:00007f70aa3f0c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000004
RBP: 00000000000003aa R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f3890
R13: 00000000ffffffff R14: 00007f70aa3f16d4 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..