do_syscall_64+0xcd/0x110 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7

Uninit was created at:
==================================================================
BUG: KMSAN: uninit-value in print_stack_trace+0xf4/0x360 kernel/stacktrace.c:21
CPU: 1 PID: 8740 Comm: syz-executor1 Not tainted 4.20.0-rc5+ #111
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x284/0x3b0 lib/dump_stack.c:113
 kmsan_report+0x12d/0x290 mm/kmsan/kmsan.c:684
 __msan_warning+0x76/0xc0 mm/kmsan/kmsan_instr.c:316
 print_stack_trace+0xf4/0x360 kernel/stacktrace.c:21
 kmsan_print_origin+0x206/0x260 mm/kmsan/kmsan.c:415
 kmsan_internal_chain_origin+0x247/0x260 mm/kmsan/kmsan.c:462
 kmsan_memcpy_memmove_metadata+0x1a9/0xf70 mm/kmsan/kmsan.c:345
 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:363
 __msan_memcpy+0x61/0x70 mm/kmsan/kmsan_instr.c:148
 move_msr_up arch/x86/kvm/vmx.c:3407 [inline]
 setup_msrs+0x79e/0x14d0 arch/x86/kvm/vmx.c:3432
 vmx_set_efer+0x640/0x7e0 arch/x86/kvm/vmx.c:5110
 set_efer arch/x86/kvm/x86.c:1277 [inline]
 kvm_set_msr_common+0x475e/0x5940 arch/x86/kvm/x86.c:2436
 vmx_set_msr+0x1b7a/0x3de0 arch/x86/kvm/vmx.c:4369
 kvm_set_msr+0x4a1/0x590 arch/x86/kvm/x86.c:1324
 handle_wrmsr+0x1b6/0x7d0 arch/x86/kvm/vmx.c:7485
 vmx_handle_exit+0x2249/0xb030 arch/x86/kvm/vmx.c:10632
 vcpu_enter_guest arch/x86/kvm/x86.c:7811 [inline]
 vcpu_run arch/x86/kvm/x86.c:7874 [inline]
 kvm_arch_vcpu_ioctl_run+0xadf5/0x11ff0 arch/x86/kvm/x86.c:8074
 kvm_vcpu_ioctl+0x1063/0x1d10 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2596
 do_vfs_ioctl+0xf36/0x2d30 fs/ioctl.c:46
 ksys_ioctl fs/ioctl.c:713 [inline]
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl+0x1da/0x270 fs/ioctl.c:718
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:718
 do_syscall_64+0xcd/0x110 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x457659
Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fde255c8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457659
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fde255c96d4
R13: 00000000004c044e R14: 00000000004d0d00 R15: 00000000ffffffff

Local variable description: ----__ai_ptr.i@mmu_spte_update_no_track
Variable was created at:
 mmu_spte_update_no_track+0x5e/0x8e0 arch/x86/kvm/mmu.c:709
 mmu_spte_update+0x7d/0x7d0 arch/x86/kvm/mmu.c:743
==================================================================