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: 5467 at arch/x86/kvm/lapic.c:355 kvm_recalculate_logical_map arch/x86/kvm/lapic.c:355 [inline] WARNING: CPU: 0 PID: 5467 at arch/x86/kvm/lapic.c:355 kvm_recalculate_apic_map+0xc87/0x1650 arch/x86/kvm/lapic.c:459 Modules linked in: CPU: 0 UID: 0 PID: 5467 Comm: syz-executor.0 Not tainted 6.10.0-rc4-next-20240620-syzkaller-07397-gb992b79ca8bc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:kvm_recalculate_logical_map arch/x86/kvm/lapic.c:355 [inline] RIP: 0010:kvm_recalculate_apic_map+0xc87/0x1650 arch/x86/kvm/lapic.c:459 Code: 79 00 83 fb 01 7e 30 83 fb 02 74 64 83 fb 03 74 75 83 fb 04 0f 85 c1 00 00 00 e8 04 db 79 00 e9 c0 00 00 00 e8 fa da 79 00 90 <0f> 0b 90 48 8b 5c 24 20 e9 4f ff ff ff 85 db 0f 84 8d 00 00 00 83 RSP: 0018:ffffc900048cf3e0 EFLAGS: 00010293 RAX: ffffffff81199ed6 RBX: 0000000000000001 RCX: ffff88801835bc00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000082000 RBP: ffffc900048cf540 R08: ffffffff81199de5 R09: 1ffffffff1f5dc7d R10: dffffc0000000000 R11: fffffbfff1f5dc7e R12: ffffc900048cf4c0 R13: dffffc0000000000 R14: 0000000000082000 R15: ffff888072ff8024 FS: 00007fec8f79a6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002004d008 CR3: 000000002455a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kvm_apic_set_state+0x39d/0x15c0 arch/x86/kvm/lapic.c:3036 kvm_vcpu_ioctl_set_lapic+0x20/0x190 arch/x86/kvm/x86.c:5132 kvm_arch_vcpu_ioctl+0x136d/0x2cd0 arch/x86/kvm/x86.c:5907 kvm_vcpu_ioctl+0x6e0/0xdf0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4599 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fec8ea7c959 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:00007fec8f79a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fec8eb9bf80 RCX: 00007fec8ea7c959 RDX: 0000000020000880 RSI: 000000004400ae8f RDI: 0000000000000005 RBP: 00007fec8ead8c88 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fec8eb9bf80 R15: 00007ffc052508a8