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: 5935 at arch/x86/kvm/vmx/vmx.c:6459 __vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6459 [inline]
WARNING: CPU: 0 PID: 5935 at arch/x86/kvm/vmx/vmx.c:6459 vmx_handle_exit+0x1209/0x19f0 arch/x86/kvm/vmx/vmx.c:6616
Modules linked in:
CPU: 0 PID: 5935 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6459 [inline]
RIP: 0010:vmx_handle_exit+0x1209/0x19f0 arch/x86/kvm/vmx/vmx.c:6616
Code: c0 0f 84 14 f9 ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 03 f9 ff ff 4c 89 f7 e8 91 2c bb 00 e9 f6 f8 ff ff e8 87 aa 62 00 <0f> 0b 43 80 3c 27 00 74 08 48 89 df e8 f6 2b bb 00 48 8b 3b 48 8d
RSP: 0018:ffffc9000323f4d0 EFLAGS: 00010293
RAX: ffffffff8124d7e9 RBX: ffff88802df68000 RCX: ffff88807dc19e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88802df68000
RBP: ffffc9000323fa70 R08: dffffc0000000000 R09: 1ffffffff223dec2
R10: dffffc0000000000 R11: fffffbfff223dec3 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffc9000325b191 R15: 1ffff11005bed000
FS:  000055557c1ef500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000022c0 CR3: 0000000072583000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 vcpu_enter_guest arch/x86/kvm/x86.c:10980 [inline]
 vcpu_run+0x495b/0x7640 arch/x86/kvm/x86.c:11085
 kvm_arch_vcpu_ioctl_run+0x1005/0x18b0 arch/x86/kvm/x86.c:11314
 kvm_vcpu_ioctl+0x98a/0xd00 virt/kvm/kvm_main.c:4164
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb97559e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff469c9008 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb975825fa0 RCX: 00007fb97559e159
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007fb97563503b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb975825fac R14: 00007fb975825fa0 R15: 00007fb975825fa0
 </TASK>