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    Windows 10 VM crashes (N5105)

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    • GoogleSitemapsG Offline
      GoogleSitemaps
      last edited by

      A migrated VM is crashing my new hardware. If I do a clean install and run certain progammes (BlueIris) it crashes the VM. I think it is happening when software on the OS is probing for certain capabilities.

      This issue from a few years back looks similar to the one I'm facing :
      https://xcp-ng.org/forum/topic/3517/windows-10-vm-reboots-when-starting-software/18

      which makes me think it is perhaps specific to my more recent CPU / hardware.
      I'm using an N5105 processor.

      (XEN) [526158.312732] d11v1 Unknown Host LBR MSRs
      (XEN) [526158.312738] domain_crash called from arch/x86/hvm/vmx/vmx.c#vmx_msr_write_intercept+0x4c2/0x510
      (XEN) [526158.312740] Domain 11 (vcpu#1) crashed on cpu#0:
      (XEN) [526158.312745] ----[ Xen-4.13.4-9.24.1  x86_64  debug=n   Tainted: M    ]----
      (XEN) [526158.312746] CPU:    0
      (XEN) [526158.312748] RIP:    0010:[<fffff80631bf8ad2>]
      (XEN) [526158.312749] RFLAGS: 0000000000040002   CONTEXT: hvm guest (d11v1)
      (XEN) [526158.312752] rax: 0000000000000001   rbx: 0000000000000000   rcx: 00000000000001d9
      (XEN) [526158.312753] rdx: 0000000000000000   rsi: 0000000000000000   rdi: 0000000000000280
      (XEN) [526158.312755] rbp: ffffd5854226fc80   rsp: ffffd5854226fbf8   r8:  0000000000000001
      (XEN) [526158.312757] r9:  ffffd5854226f358   r10: 0000000000000000   r11: ffff958afc6b1080
      (XEN) [526158.312758] r12: 00000000018cb4e0   r13: 00007ffd01d34960   r14: 0000000000000280
      (XEN) [526158.312760] r15: 0000000000000000   cr0: 0000000080050033   cr4: 0000000000350ef8
      (XEN) [526158.312761] cr3: 000000002eefc000   cr2: 00000000003d125a
      (XEN) [526158.312762] fsb: 0000000000000000   gsb: ffffa901f09d2000   gss: 00000000003c6000
      (XEN) [526158.312764] ds: 002b   es: 002b   fs: 0053   gs: 002b   ss: 0018   cs: 0010
      

      any thoughts?

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      • olivierlambertO Offline
        olivierlambert Vates πŸͺ Co-Founder CEO
        last edited by olivierlambert

        Hi,

        Without more information, it's hard to assist… What XCP-ng version are you using? Is it fully up to date? Are you using nested mode?

        GoogleSitemapsG 1 Reply Last reply Reply Quote 0
        • GoogleSitemapsG Offline
          GoogleSitemaps @olivierlambert
          last edited by

          @olivierlambert xo-server 5.102.0 patched. Not nested.

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          • olivierlambertO Offline
            olivierlambert Vates πŸͺ Co-Founder CEO
            last edited by

            XCP-ng, not Xen Orchestra πŸ˜‰

            GoogleSitemapsG 1 Reply Last reply Reply Quote 0
            • GoogleSitemapsG Offline
              GoogleSitemaps @olivierlambert
              last edited by

              @olivierlambert XCP-ng Host 8.2.1

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              • olivierlambertO Offline
                olivierlambert Vates πŸͺ Co-Founder CEO
                last edited by

                Do you have BIOS access? I would double check you have various options enabled (I don't remember exactly which ones, also this bug rings a bell but I can't find exactly what πŸ€” )

                GoogleSitemapsG 1 Reply Last reply Reply Quote 0
                • GoogleSitemapsG Offline
                  GoogleSitemaps @olivierlambert
                  last edited by

                  @olivierlambert I'll have a run through the bios shortly. I recall enabling all the virtualization settings etc. everything else seems to be running smoothly.

                  my hunch is it is graphics related and BlueIris is probing for graphic accelerator hardware. I cant find a way to disable this behavior to test my theory though.

                  Something similar was reported on proxmox, the solution was to set the following option, but I don't see an equivalent. For XCP-NG.

                  echo "options kvm ignore_msrs=1" > /etc/modprobe.d/kvm.conf

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                  • olivierlambertO Offline
                    olivierlambert Vates πŸͺ Co-Founder CEO
                    last edited by

                    It's weird since we patched those recents CPUs for this bug: https://github.com/xcp-ng/xcp/issues/434

                    Could it be something else? πŸ€”

                    olivierlambert created this issue in xcp-ng/xcp

                    closed Backport Xen patch to support Ice Lake and Comet Lake CPUs #434

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                    • GoogleSitemapsG Offline
                      GoogleSitemaps @olivierlambert
                      last edited by

                      @olivierlambert okay, I just remembered, I had trouble installing too ..... The install was black screening after relinquish VGA.

                      After some reading around I happened upon :

                      "Custom XCP-ng 8.2.1 install ISO with Xen 64bit VGA Dom0 kernel fix (NUC11) and new ethernet drivers (NUC10/NUC11):" from here :

                      https://users.ntplx.net/~andrew/xcp/

                      This is how I got up and running.

                      I'm way out of my depth here, but this feels like it might be the crux of the matter.

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                      • olivierlambertO Offline
                        olivierlambert Vates πŸͺ Co-Founder CEO
                        last edited by

                        Can you create an issue on https://github.com/xcp-ng/xcp?

                        GoogleSitemapsG 1 Reply Last reply Reply Quote 0
                        • GoogleSitemapsG Offline
                          GoogleSitemaps @olivierlambert
                          last edited by

                          @olivierlambert sure , will give it a go.

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                          • GoogleSitemapsG Offline
                            GoogleSitemaps @GoogleSitemaps
                            last edited by

                            @GoogleSitemaps

                            https://github.com/xcp-ng/xcp/issues/565

                            danielbayley80 created this issue in xcp-ng/xcp

                            open Domain 11 (vcpu#1) crashed on cpu#0: (N5105) #565

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