ptrace attach of "/root/syz-executor1"[8449] was attempted by "/root/syz-executor1"[8450]
==================================================================
BUG: KMSAN: uninit-value in __vmcs_writel arch/x86/kvm/vmx.c:2378 [inline]
BUG: KMSAN: uninit-value in vmcs_write32 arch/x86/kvm/vmx.c:2399 [inline]
BUG: KMSAN: uninit-value in vmx_queue_exception+0x5a2/0x880 arch/x86/kvm/vmx.c:3330
CPU: 0 PID: 8444 Comm: syz-executor2 Not tainted 4.19.0+ #81
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+0x32d/0x480 lib/dump_stack.c:113
 kmsan_report+0x19f/0x300 mm/kmsan/kmsan.c:911
 __msan_warning+0x76/0xd0 mm/kmsan/kmsan_instr.c:415
 __vmcs_writel arch/x86/kvm/vmx.c:2378 [inline]
 vmcs_write32 arch/x86/kvm/vmx.c:2399 [inline]
 vmx_queue_exception+0x5a2/0x880 arch/x86/kvm/vmx.c:3330
 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+0x7ea8/0x11d80 arch/x86/kvm/x86.c:7930
 kvm_vcpu_ioctl+0xfb1/0x1f90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2590
 do_vfs_ioctl+0xf77/0x2d30 fs/ioctl.c:46
 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+0xcf/0x110 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:00007fc55d984c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc55d9856d4
R13: 00000000004c028e R14: 00000000004d05f8 R15: 00000000ffffffff

Uninit was stored to memory at:
 save_stack_trace+0xc6/0x110 arch/x86/kernel/stacktrace.c:62
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:252 [inline]
 kmsan_save_stack mm/kmsan/kmsan.c:267 [inline]
 kmsan_internal_chain_origin+0x136/0x240 mm/kmsan/kmsan.c:569
 __msan_chain_origin+0x6d/0xd0 mm/kmsan/kmsan_instr.c:292
 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+0x6d8/0x740 arch/x86/kvm/x86.c:497
 nested_vmx_get_vmptr+0x374/0x3d0 arch/x86/kvm/vmx.c:8236
 handle_vmon+0x9f0/0x1c10 arch/x86/kvm/vmx.c:8359
 vmx_handle_exit+0x1e81/0xbac0 arch/x86/kvm/vmx.c:10128
 vcpu_enter_guest arch/x86/kvm/x86.c:7667 [inline]
 vcpu_run arch/x86/kvm/x86.c:7730 [inline]
 kvm_arch_vcpu_ioctl_run+0xac32/0x11d80 arch/x86/kvm/x86.c:7930
 kvm_vcpu_ioctl+0xfb1/0x1f90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2590
 do_vfs_ioctl+0xf77/0x2d30 fs/ioctl.c:46
 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+0xcf/0x110 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:8227
 handle_vmon+0x9f0/0x1c10 arch/x86/kvm/vmx.c:8359
==================================================================