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: 5480 at arch/x86/kvm/vmx/vmx.c:5259 handle_exception_nmi+0xa5d/0xda0 arch/x86/kvm/vmx/vmx.c:5259
Modules linked in:
CPU: 1 PID: 5480 Comm: syz-executor.0 Not tainted 6.8.0-rc7-syzkaller-g005f6f34bd47 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:handle_exception_nmi+0xa5d/0xda0 arch/x86/kvm/vmx/vmx.c:5259
Code: cf 00 e9 bd f6 ff ff 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 8a f6 ff ff 48 89 ef e8 4e 83 cf 00 e9 7d f6 ff ff e8 d4 62 6d 00 90 <0f> 0b 90 e9 8f fb ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 9b f7
RSP: 0018:ffffc900054d73b8 EFLAGS: 00010293
RAX: ffffffff81260c2c RBX: 0000000034a5e000 RCX: ffff8880215c1dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff812607b7 R09: ffffffff81260335
R10: 0000000000000002 R11: ffff8880215c1dc0 R12: 1ffff1100cd0201b
R13: 0000000080000b0e R14: ffff888066810000 R15: dffffc0000000000
FS:  00007f8c139b06c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000003972cf64 CR3: 0000000076baa000 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:6575 [inline]
 vmx_handle_exit+0x1352/0x1f30 arch/x86/kvm/vmx/vmx.c:6592
 vcpu_enter_guest arch/x86/kvm/x86.c:11067 [inline]
 vcpu_run+0x5c9d/0x8790 arch/x86/kvm/x86.c:11171
 kvm_arch_vcpu_ioctl_run+0xa7e/0x1920 arch/x86/kvm/x86.c:11397
 kvm_vcpu_ioctl+0x7f4/0xd00 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+0xfc/0x170 fs/ioctl.c:857
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f8c12c7c959
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8c139b00c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8c12d9bf80 RCX: 00007f8c12c7c959
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006
RBP: 00007f8c12cd8c88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f8c12d9bf80 R15: 00007fffc7310708
 </TASK>