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BUG: KMSAN: uninit-value in __vmcs_writel arch/x86/kvm/vmx.c:2383 [inline]
BUG: KMSAN: uninit-value in vmcs_write32 arch/x86/kvm/vmx.c:2404 [inline]
BUG: KMSAN: uninit-value in vmx_queue_exception+0x58d/0x860 arch/x86/kvm/vmx.c:3335
CPU: 0 PID: 17079 Comm: syz-executor4 Not tainted 4.19.0+ #74
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+0x306/0x460 lib/dump_stack.c:113
 kmsan_report+0x1a2/0x2e0 mm/kmsan/kmsan.c:916
 __msan_warning+0x7c/0xe0 mm/kmsan/kmsan_instr.c:512
 __vmcs_writel arch/x86/kvm/vmx.c:2383 [inline]
 vmcs_write32 arch/x86/kvm/vmx.c:2404 [inline]
 vmx_queue_exception+0x58d/0x860 arch/x86/kvm/vmx.c:3335
 inject_pending_event arch/x86/kvm/x86.c:7004 [inline]
 vcpu_enter_guest arch/x86/kvm/x86.c:7499 [inline]
 vcpu_run arch/x86/kvm/x86.c:7730 [inline]
 kvm_arch_vcpu_ioctl_run+0x7664/0x10ab0 arch/x86/kvm/x86.c:7930
 kvm_vcpu_ioctl+0x11a7/0x20b0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2590
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0xf28/0x2ca0 fs/ioctl.c:687
 ksys_ioctl fs/ioctl.c:702 [inline]
 __do_sys_ioctl fs/ioctl.c:709 [inline]
 __se_sys_ioctl+0x1da/0x270 fs/ioctl.c:707
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:707
 do_syscall_64+0xbe/0x100 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x457569
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:00007fee91babc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fee91bac6d4
R13: 00000000004c0274 R14: 00000000004d05c0 R15: 00000000ffffffff

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:255 [inline]
 kmsan_save_stack mm/kmsan/kmsan.c:270 [inline]
 kmsan_internal_chain_origin+0x136/0x240 mm/kmsan/kmsan.c:572
 __msan_chain_origin+0x75/0xd0 mm/kmsan/kmsan_instr.c:384
 kvm_multiple_exception arch/x86/kvm/x86.c:433 [inline]
 kvm_queue_exception_e arch/x86/kvm/x86.c:520 [inline]
 kvm_inject_page_fault+0x688/0x6f0 arch/x86/kvm/x86.c:497
 nested_vmx_get_vmptr+0x374/0x3d0 arch/x86/kvm/vmx.c:8241
 handle_vmclear+0x4ee/0x1a60 arch/x86/kvm/vmx.c:8514
 vmx_handle_exit+0x20f5/0xb900 arch/x86/kvm/vmx.c:10133
 vcpu_enter_guest arch/x86/kvm/x86.c:7667 [inline]
 vcpu_run arch/x86/kvm/x86.c:7730 [inline]
 kvm_arch_vcpu_ioctl_run+0xa233/0x10ab0 arch/x86/kvm/x86.c:7930
 kvm_vcpu_ioctl+0x11a7/0x20b0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2590
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0xf28/0x2ca0 fs/ioctl.c:687
 ksys_ioctl fs/ioctl.c:702 [inline]
 __do_sys_ioctl fs/ioctl.c:709 [inline]
 __se_sys_ioctl+0x1da/0x270 fs/ioctl.c:707
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:707
 do_syscall_64+0xbe/0x100 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7

Local variable description: ----e@nested_vmx_get_vmptr
Variable was created at:
 nested_vmx_get_vmptr+0xa5/0x3d0 arch/x86/kvm/vmx.c:8232
 handle_vmclear+0x4ee/0x1a60 arch/x86/kvm/vmx.c:8514
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