Hi,

On Wed, May 20, 2026 at 12:11:00AM +0000, H. Hartzer wrote:
> Hi bugs@,
> 
> I have a VMM host still running 7.8.
> 
> I had an existing 7.8 server (quite stock) that I upgraded with
> sysupgrade. Unfortunately, it hangs and VMM's process for the upgraded VM
> is at 100%.

just to clarify your scenario:

 - host is running 7.8 (stable? some snapshot?)
 - guest runs 7.8 (stable? some snapshot?) and is upgraded to 7.9
  (stable? snapshot? ie. sysupgrade with or without "-s")

Thanks,
HJ.

> 
> Here's the serial console output:
> 
> SHA256.sig   100% |*************************************|  2144       00:00   
>  
> Signature Verified
> BUILDINFO    100% |*************************************|    54       00:00   
>  
> Verifying old sets.
> INSTALL.amd64 100% |************************************| 44889       00:00   
>  
> base79.tgz   100% |*************************************|   510 MB    00:51   
>  
> bsd          100% |*************************************| 32203 KB    00:02   
>  
> bsd.mp       100% |*************************************| 32331 KB    00:03   
>  
> bsd.rd       100% |*************************************|  4734 KB    00:00   
>  
> comp79.tgz   100% |*************************************| 88886 KB    00:06   
>  
> game79.tgz   100% |*************************************|  2742 KB    00:00   
>  
> man79.tgz    100% |*************************************|  8406 KB    00:00   
>  
> xbase79.tgz  100% |*************************************| 47835 KB    00:03   
>  
> xfont79.tgz  100% |*************************************| 23022 KB    00:01   
>  
> xserv79.tgz  100% |*************************************| 11815 KB    00:00   
>  
> xshare79.tgz 100% |*************************************|  4562 KB    00:00   
>  
> Verifying sets.
> Fetching updated firmware.
> fw_update: add none; update none; keep amd
> Upgrading.
> syncing disks... done
> vmmci0: powerdown
> rebooting...
> 
> 
> 
> 
> Using drive 0, partition 3.
> Loading......
> probing: pc0 com0 mem[638K 766M a20=on] 
> disk: hd0+
> >> OpenBSD/amd64 BOOT 3.67
> upgrade detected: switching to /bsd.upgrade
> |
> com0: 115200 baud
> switching console to com0
> >> OpenBSD/amd64 BOOT 3.67
> boot> 
> booting hd0a:/bsd.upgrade: 4264850+1827840+3892024+0+720896 
> [109+484968+336166]=0xb00b80
> entry point at 0xffffffff81001000
> Copyright (c) 1982, 1986, 1989, 1991, 1993
>         The Regents of the University of California.  All rights reserved.
> Copyright (c) 1995-2026 OpenBSD. All rights reserved.  https://www.OpenBSD.org
> 
> OpenBSD 7.9 (RAMDISK_CD) #396: Wed May  6 13:25:05 MDT 2026
>     [email protected]:/usr/src/sys/arch/amd64/compile/RAMDISK_CD
> real mem = 788504576 (751MB)
> avail mem = 758550528 (723MB)
> random: good seed from bootblocks
> mainbus0 at root
> bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xf2760 (10 entries)
> bios0: vendor SeaBIOS version "1.16.3p0-OpenBSD-vmm" date 01/01/2011
> bios0: OpenBSD VMM
> acpi at bios0 not configured
> cpu0 at mainbus0: (uniprocessor)
> cpu0: AMD Opteron(tm) Processor 4162 EE, 25.23 MHz, 10-08-01
> cpu0: cpuid 1 
> edx=78ba97f<FPU,VME,DE,PSE,TSC,MSR,PAE,CX8,SEP,PGE,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2>
>  ecx=80802001<SSE3,CX16,POPCNT,HV>
> cpu0: cpuid 80000001 edx=e7d3fbff<NXE,MMXX,FFXSR,PAGE1GB,LONG,3DNOW2,3DNOW> 
> ecx=837fb<LAHF,CMPLEG,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,OSVW,IBS,SKINIT,NODEID>
> cpu0: cpuid 80000007 edx=100<ITSC>
> cpu0: 64KB 64b/line 2-way D-cache, 64KB 64b/line 2-way I-cache
> cpu0: 512KB 64b/line 16-way L2 cache
> cpu0: AMD erratum 721 detected and fixed
> pvbus0 at mainbus0: KVM, OpenBSD
> pci0 at mainbus0 bus 0
> pchb0 at pci0 dev 0 function 0 "OpenBSD VMM Host" rev 0x00
> virtio0 at pci0 dev 1 function 0 "Qumranet Virtio 1.x RNG" rev 0x01
> viornd0 at virtio0
> virtio0: irq 3
> virtio1 at pci0 dev 2 function 0 "Qumranet Virtio 1.x Network" rev 0x01
> vio0 at virtio1: 1 queue, address 00:55:01:00:00:01
> virtio1: irq 5
> virtio2 at pci0 dev 3 function 0 "Qumranet Virtio 1.x Storage" rev 0x01
> vioblk0 at virtio2
> virtio2: irq 6
> scsibus0 at vioblk0: 1 targets
> sd0 at scsibus0 targ 0 lun 0: <VirtIO, Block Device, >
> sd0: 24576MB, 512 bytes/sector, 50331648 sectors
> virtio3 at pci0 dev 4 function 0 "Qumranet Virtio 1.x SCSI" rev 0x01
> vioscsi0 at virtio3: qsize 128
> virtio3: irq 7
> scsibus1 at vioscsi0: 1 targets
> cd0 at scsibus1 targ 0 lun 0: <OpenBSD, VMM CD-ROM, 001> removable
> virtio4 at pci0 dev 5 function 0 "OpenBSD VMM Control" rev 0x00
> vmmci0 at virtio4
> virtio4: irq 9
> isa0 at mainbus0
> com0 at isa0 port 0x3f8/8 irq 4: ns8250, no fifo
> com0: console
> 
> (No output after this point.)
> 
> 
> I also launched a fresh 7.9 install from ISO on the same host, and
> it came up just fine.
> 
> I'm not sure where to begin debugging this. It seems like others will
> likely run into it as well.
> 
> Thank you!
> 
> -Henrich
> 

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