===================================================== BUG: KMSAN: uninit-value in em_ret_far+0x332/0x340 arch/x86/kvm/emulate.c:2259 em_ret_far+0x332/0x340 arch/x86/kvm/emulate.c:2259 em_ret_far_imm+0x39/0x4f0 arch/x86/kvm/emulate.c:2271 x86_emulate_insn+0x1d87/0x5880 arch/x86/kvm/emulate.c:5292 x86_emulate_instruction+0x13c9/0x30a0 arch/x86/kvm/x86.c:9175 kvm_mmu_page_fault+0x1026/0x1140 arch/x86/kvm/mmu/mmu.c:5855 handle_ept_violation+0x4ef/0x7f0 arch/x86/kvm/vmx/vmx.c:5787 __vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6566 [inline] vmx_handle_exit+0x1b05/0x2140 arch/x86/kvm/vmx/vmx.c:6583 vcpu_enter_guest arch/x86/kvm/x86.c:11071 [inline] vcpu_run arch/x86/kvm/x86.c:11175 [inline] kvm_arch_vcpu_ioctl_run+0x91e9/0xb890 arch/x86/kvm/x86.c:11401 kvm_vcpu_ioctl+0xbfc/0x1770 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4441 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl+0x225/0x410 fs/ioctl.c:857 __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Local variable eip created at: em_ret_far+0x3a/0x340 arch/x86/kvm/emulate.c:2244 em_ret_far_imm+0x39/0x4f0 arch/x86/kvm/emulate.c:2271 CPU: 1 PID: 7961 Comm: syz-executor.3 Not tainted 6.8.0-rc4-syzkaller-00267-g0f1dd5e91e2b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 =====================================================