kvm_intel: L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5399 at arch/x86/kvm/vmx/vmx.c:5219 handle_exception_nmi+0xa44/0x1120 Modules linked in: CPU: 0 PID: 5399 Comm: syz-executor.0 Not tainted 6.4.0-rc1-syzkaller-00012-g16a8829130ca #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 RIP: 0010:handle_exception_nmi+0xa44/0x1120 arch/x86/kvm/vmx/vmx.c:5219 Code: 1f bf 00 e9 de f6 ff ff 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c af f6 ff ff 48 89 ef e8 96 1f bf 00 e9 a2 f6 ff ff e8 2c 51 67 00 <0f> 0b e9 ba fb ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c bf f7 ff RSP: 0018:ffffc90004b7f658 EFLAGS: 00010293 RAX: ffffffff81241614 RBX: 0000000000000000 RCX: ffff88802700d940 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00000000a0000975 R08: ffffffff812411c8 R09: ffffffff81240d3e R10: 0000000000000002 R11: ffff88802700d940 R12: ffff88802a698000 R13: 1ffff110054d301b R14: dffffc0000000000 R15: 000000008000030e FS: 00007ff330018700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000a0000975 CR3: 0000000071054000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000b8fecd19 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: __vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6536 [inline] vmx_handle_exit+0xcc8/0x19c0 arch/x86/kvm/vmx/vmx.c:6553 vcpu_enter_guest arch/x86/kvm/x86.c:10842 [inline] vcpu_run+0x674e/0x82a0 arch/x86/kvm/x86.c:10945 kvm_arch_vcpu_ioctl_run+0x866/0x1510 arch/x86/kvm/x86.c:11166 kvm_vcpu_ioctl+0x7f4/0xd00 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4102 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff32ee89409 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff330018168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ff32ef9bf80 RCX: 00007ff32ee89409 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 RBP: 00007ff32eee4367 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe4daf493f R14: 00007ff330018300 R15: 0000000000022000