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.
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WARNING: CPU: 0 PID: 5422 at arch/x86/kvm/vmx/vmx.c:5219 handle_exception_nmi+0xa40/0x10d0
Modules linked in:
CPU: 0 PID: 5422 Comm: syz-executor.0 Not tainted 6.4.0-rc4-syzkaller-00031-g8b817fded42d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:handle_exception_nmi+0xa40/0x10d0 arch/x86/kvm/vmx/vmx.c:5219
Code: a4 c0 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 da a4 c0 00 e9 a2 f6 ff ff e8 f0 62 66 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:ffffc9000597f638 EFLAGS: 00010293
RAX: ffffffff812476a0 RBX: 0000000000000000 RCX: ffff88807dbd5940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000030000064 R08: ffffffff81247254 R09: ffffffff81246dca
R10: 0000000000000002 R11: ffff88807dbd5940 R12: ffff88807caa8000
R13: 1ffff1100f95501b R14: dffffc0000000000 R15: 000000008000030e
FS:  00007fbe378a8700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000030000012 CR3: 0000000016369000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6536 [inline]
 vmx_handle_exit+0xc8f/0x1980 arch/x86/kvm/vmx/vmx.c:6553
 vcpu_enter_guest arch/x86/kvm/x86.c:10846 [inline]
 vcpu_run+0x5b95/0x8620 arch/x86/kvm/x86.c:10949
 kvm_arch_vcpu_ioctl_run+0x862/0x1590 arch/x86/kvm/x86.c:11170
 kvm_vcpu_ioctl+0x7f0/0xcf0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4106
 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+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fbe36a8c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbe378a8168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fbe36babf80 RCX: 00007fbe36a8c169
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006
RBP: 00007fbe36ae7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc06d25e9f R14: 00007fbe378a8300 R15: 0000000000022000
 </TASK>