Hello:

Caveat:
Don't kow if this is the *right* place to post this question.
Please advise / suggest.

---

After some problems with my XPSP3 VM crashing, I am now getting this
printout every time I start the VM.

All this runs under VirtualBox Version 7.0.12 r159484 from the
VirtualBox repository.

This happens (no surprise) with XPSP3, stopping and restarting a
Chimaera headless VM does not have this problem, so it would seem to
be limited to the Windows VM but I could not say for sure.

[code]
------------[ cut here ]------------
[  +0.000012] WARNING: CPU: 1 PID: 15685 at 
arch/x86/kernel/fpu/core.c:129 kernel_fpu_begin_mask+0xc9/0xe0
[  +0.000002] Modules linked in: fuse vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) autofs4 binfmt_misc nfsd auth_rpcgss nfs_acl nfs lockd 
grace nfs_ssc fscache sunrpc drivetemp snd_hda_codec_realtek coretemp 
snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_intel_dspcfg 
soundwire_intel uvcvideo soundwire_generic_allocation 
videobuf2_vmalloc snd_soc_core videobuf2_memops videobuf2_v4l2 
snd_usb_audio videobuf2_common kvm_intel snd_compress kvm 
soundwire_cadence snd_usbmidi_lib snd_hda_codec videodev snd_rawmidi 
irqbypass snd_hda_core snd_seq_device pcspkr nvidia(POE) snd_hwdep mc 
serio_raw soundwire_bus at24 joydev snd_pcm_oss snd_mixer_oss snd_pcm 
drm snd_timer snd soundcore evdev x38_edac acpi_cpufreq ext4 crc16 
mbcache jbd2 crc32c_generic hid_logitech_hidpp hid_logitech_dj sg 
sd_mod t10_pi crc_t10dif crct10dif_generic crct10dif_common 
hid_generic usbhid hid mptsas ahci xhci_pci libahci mptscsih e1000e 
i2c_i801 xhci_hcd aic7xxx mptbase ehci_pci scsi_transport_sas 
uhci_hcd ptp libata
[  +0.000072]  ehci_hcd scsi_transport_spi i2c_smbus scsi_mod usbcore 
pps_core usb_common button
[  +0.000011] CPU: 1 PID: 15685 Comm: EMT-0 Tainted: P           OE   
  5.10.0-0.deb10.16-amd64 #1 Debian 5.10.127-2~bpo10+1
[  +0.000002] Hardware name: Sun Microsystems Ultra 24/Ultra 24, BIOS 
1.56    01/21/2011
[  +0.000003] RIP: 0010:kernel_fpu_begin_mask+0xc9/0xe0
[  +0.000003] Code: c4 10 5b c3 65 8a 05 7e 5f 5e 5d 84 c0 74 92 0f 
0b eb 8e f0 80 4f 01 40 48 81 c7 40 14 00 00 e8 dd fb ff ff eb a5 db 
e3 eb c4 <0f> 0b e9 7b ff ff ff e8 bb 23 85 00 66 66 2e 0f 1f 84 00 
00 00 00
[  +0.000002] RSP: 0018:ffffafe80ac87b30 EFLAGS: 00010002
[  +0.000002] RAX: 0000000080000001 RBX: 0000000000000003 RCX: 
ffffafe80ac91000
[  +0.000002] RDX: 0000000000000009 RSI: ffffafe80adb5000 RDI: 
0000000000000003
[  +0.000002] RBP: ffffafe80ac87b50 R08: 0000000000000000 R09: 
0000000000000010
[  +0.000001] R10: ffffafe803ffa000 R11: 0000000000000000 R12: 
ffffafe80adb5000
[  +0.000002] R13: ffffafe801b26a28 R14: 0000000000000001 R15: 
ffffafe80adb5000
[  +0.000002] FS:  00007f1a874fc700(0000) GS:ffff9c2af3c80000(0000) 
knlGS:0000000000000000
[  +0.000002] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  +0.000002] CR2: 0000000000f00000 CR3: 000000017690c000 CR4: 
00000000000426e0
[  +0.000001] Call Trace:
[  +0.000037]  SUPR0FpuBegin+0x13/0x20 [vboxdrv]
[  +0.000006]  ? up+0x12/0x50
[  +0.000014]  ? VBoxHost_RTThreadCtxHookEnable+0x32/0x40 [vboxdrv]
[  +0.000002]  ? update_load_avg+0x7e/0x5c0
[  +0.000013]  ? supdrvIOCtlFast+0x58/0xb0 [vboxdrv]
[  +0.000011]  ? VBoxDrvLinuxIOCtl_7_0_12+0x57/0x230 [vboxdrv]
[  +0.000003]  ? __schedule+0x2c6/0x770
[  +0.000004]  ? __x64_sys_ioctl+0x84/0xc0
[  +0.000003]  ? do_syscall_64+0x33/0x80
[  +0.000003]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  +0.000002] ---[ end trace 23fe43ea240a07e2 ]---
[/code]

The line "WARNING: CPU:" can vary from *0* to *3*, probably because I
the CPU is an Intel Q9550.

But the rest of the lines are seem to be the same, have not checked
thoroughly yet.

The affected VM (obviously with *no* web access) is only used once
every so often for the Blackberry sync software and the odd testing
of hardware such as HDDs and USB sticks with Windows only utilities.

Save for the dmesg printout, seems to be working properly.

I'd appreciate any ideas from the members of the forum.

Thanks in advance.

A.