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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ODEBUG: init active (active state 0) object type: hrtimer hint: xen_timer_callback+0x0/0x90 arch/x86/kvm/xen.c:903
WARNING: CPU: 0 PID: 4088 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505
Modules linked in:
CPU: 0 PID: 4088 Comm: syz-executor.0 Not tainted 5.17.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505
Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 40 6d 41 89 4c 89 ee 48 c7 c7 40 61 41 89 e8 28 54 af 04 <0f> 0b 83 05 b5 8a 10 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3
RSP: 0018:ffffc9000288f788 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff89415ce0 RDI: fffff52000511ee3
RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880b9c341c7
R10: ffffed1017386838 R11: 0000000000000001 R12: ffffffff88ed8ea0
R13: ffffffff89416640 R14: ffffffff815e2bb0 R15: ffffffff90110bf8
FS:  00007f10c4b36700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000041 CR3: 000000001b74d000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __debug_object_init+0x524/0xd10 lib/debugobjects.c:593
 debug_hrtimer_init kernel/time/hrtimer.c:414 [inline]
 debug_init kernel/time/hrtimer.c:468 [inline]
 hrtimer_init+0x1b/0x1e0 kernel/time/hrtimer.c:1592
 kvm_xen_init_timer arch/x86/kvm/xen.c:167 [inline]
 kvm_xen_vcpu_set_attr+0x273/0x1310 arch/x86/kvm/xen.c:683
 kvm_arch_vcpu_ioctl+0x1b64/0x3110 arch/x86/kvm/x86.c:5666
 kvm_vcpu_ioctl+0x71d/0xbb0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4072
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x11f/0x190 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f10c53c1279
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:00007f10c4b36168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f10c54d3f80 RCX: 00007f10c53c1279
RDX: 0000000020000000 RSI: 000000004048aecb RDI: 0000000000000007
RBP: 00007f10c541b189 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdf8207dcf R14: 00007f10c4b36300 R15: 0000000000022000
 </TASK>