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: 1 PID: 5374 at arch/x86/kvm/vmx/vmx.c:5219 handle_exception_nmi+0xe5b/0xfb0 arch/x86/kvm/vmx/vmx.c:5219
Modules linked in:
CPU: 1 PID: 5374 Comm: syz-executor.0 Not tainted 6.4.0-rc1-next-20230510-syzkaller-01685-g578215f3e21c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:handle_exception_nmi+0xe5b/0xfb0 arch/x86/kvm/vmx/vmx.c:5219
Code: e8 7a c0 60 00 48 89 ef e8 e2 f2 fd ff 31 ff 89 c3 89 c6 e8 87 bc 60 00 85 db 75 98 e8 5e c0 60 00 0f 0b eb 8f e8 55 c0 60 00 <0f> 0b e9 2e f7 ff ff 48 8b 7c 24 10 e8 c4 bc b3 00 e9 d0 f1 ff ff
RSP: 0018:ffffc90005507af8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888021cabb80 RSI: ffffffff812355db RDI: 0000000000000001
RBP: ffff888023730000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 00000000a0000975
R13: 0000000000000000 R14: 0000000080000300 R15: 0000000000000000
FS:  00007fce093b3700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000a0000975 CR3: 0000000074bff000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 00000000b8fecd19 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6536 [inline]
 vmx_handle_exit+0x49e/0x19b0 arch/x86/kvm/vmx/vmx.c:6553
 vcpu_enter_guest+0x30e7/0x55e0 arch/x86/kvm/x86.c:10842
 vcpu_run arch/x86/kvm/x86.c:10945 [inline]
 kvm_arch_vcpu_ioctl_run+0x9d8/0x24f0 arch/x86/kvm/x86.c:11166
 kvm_vcpu_ioctl+0x574/0xea0 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 fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fce08289279
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:00007fce093b3168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fce0839bf80 RCX: 00007fce08289279
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007fce082e3189 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffde6e6b6af R14: 00007fce093b3300 R15: 0000000000022000
 </TASK>