On Thu, Oct 01, 2026 at 08:08:57PM -0700, Mike Larkin wrote: > On Fri, Oct 02, 2026 at 01:00:31AM +0000, SlowServers Admin wrote: > > Hi bugs@, > > > > I had a working VMM setup on 7.9. I upgraded to snapshot and this is > > what I'm seeing. No VMs are starting now. All are OpenBSD VMs with raw > > disk images. > > > > Oct 2 00:55:41 bragi vmd[45485]: started potato (vm 2) successfully, tty > > /dev/ttyp1 > > Oct 2 00:55:41 bragi vmd[15401]: decode_prefix: invalid index > > Oct 2 00:55:41 bragi vmd[15401]: decode_opcode: invalid index > > Oct 2 00:55:41 bragi vmd[15401]: decode_modrm: invalid index > > Oct 2 00:55:41 bragi vmd[15401]: decode_modrm: invalid state or null insn > > Oct 2 00:55:41 bragi vmd[15401]: insn_decode: error decoding modrm > > > > 1. provide the entire vmd log not just a tiny cut-paste please. > > 2. provide the exact guest configuration. what openbsd version, what > archicture, what kernel version build number, how you started it, > vm configuration, etc. > > 3. when does it fail like this? immediately at boot or sometime later? > from the timestamps it looks like immediately. > > 4. did you make sure you did an fw update to get the latest vmm-firmware > after/during sysupgrade? > > -ml > > > dmesg: > > > > bragi# dmesg > > OpenBSD 8.0 (GENERIC.MP) #74: Thu Oct 1 17:43:46 MDT 2026 > > [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
I just installed this exact build on an AMD machine here and don't see any problems. The vmd log snippet above looks like you somehow have a mismatched set of vmd and kernel. -ml > > real mem = 68701192192 (65518MB) > > avail mem = 66588217344 (63503MB) > > random: good seed from bootblocks > > mpath0 at root > > scsibus0 at mpath0: 256 targets > > mainbus0 at root > > bios0 at mainbus0: SMBIOS rev. 2.6 @ 0x9ac00 (30 entries) > > bios0: vendor American Megatrends Inc. version "3.5b" date 03/18/2016 > > bios0: Supermicro H8SCM > > acpi0 at bios0: ACPI 3.0 > > acpi0: sleep states S0 S1 S4 S5 > > acpi0: tables DSDT FACP APIC MCFG OEMB HPET SRAT SSDT EINJ BERT ERST HEST > > acpi0: wakeup devices PC02(S4) PC03(S4) PC04(S4) PC05(S4) PC06(S4) PC07(S4) > > PC09(S4) PC0A(S4) PC0B(S4) PC0C(S4) SBAZ(S4) P0PC(S4) UHC1(S4) UHC2(S4) > > UHC3(S4) USB4(S4) [...] > > acpitimer0 at acpi0: 3579545 Hz, 24 bits > > acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat > > cpu0 at mainbus0: apid 0 (boot processor) > > cpu0: AMD Opteron(tm) Processor 4162 EE, 1700.07 MHz, 10-08-01, patch > > 010000d9 > > cpu0: cpuid 1 > > edx=178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT> > > ecx=802009<SSE3,MWAIT,CX16,POPCNT> > > cpu0: cpuid 80000001 > > edx=efd3fbff<NXE,MMXX,FFXSR,PAGE1GB,RDTSCP,LONG,3DNOW2,3DNOW> > > ecx=837ff<LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,OSVW,IBS,SKINIT,NODEID> > > cpu0: cpuid 80000007 edx=1f9<HWPSTATE,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: smt 0, core 0, package 0, type P > > cpu0: AMD erratum 721 detected and fixed > > mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges > > cpu0: apic clock running at 200MHz > > cpu0: mwait min=64, max=64, IBE > > cpu1 at mainbus0: apid 1 (application processor) > > cpu1: AMD Opteron(tm) Processor 4162 EE, 1700.20 MHz, 10-08-01, patch > > 010000d9 > > cpu1: smt 0, core 1, package 0, type P > > cpu2 at mainbus0: apid 2 (application processor) > > cpu2: AMD Opteron(tm) Processor 4162 EE, 1700.31 MHz, 10-08-01, patch > > 010000d9 > > cpu2: smt 0, core 2, package 0, type P > > cpu3 at mainbus0: apid 3 (application processor) > > cpu3: AMD Opteron(tm) Processor 4162 EE, 1700.46 MHz, 10-08-01, patch > > 010000d9 > > cpu3: smt 0, core 3, package 0, type P > > cpu4 at mainbus0: apid 4 (application processor) > > cpu4: AMD Opteron(tm) Processor 4162 EE, 1700.51 MHz, 10-08-01, patch > > 010000d9 > > cpu4: smt 0, core 4, package 0, type P > > cpu5 at mainbus0: apid 5 (application processor) > > cpu5: AMD Opteron(tm) Processor 4162 EE, 1700.39 MHz, 10-08-01, patch > > 010000d9 > > cpu5: smt 0, core 5, package 0, type P > > ioapic0 at mainbus0: apid 0 pa 0xfec00000, version 21, 24 pins, remapped > > ioapic1 at mainbus0: apid 1 pa 0xfec20000, version 21, 32 pins, remapped > > acpimcfg0 at acpi0 > > acpimcfg0: addr 0xe0000000, bus 0-255 > > acpihpet0 at acpi0: 14318180 Hz > > acpiprt0 at acpi0: bus 0 (PCI0) > > acpiprt1 at acpi0: bus -1 (PC02) > > acpiprt2 at acpi0: bus -1 (PC03) > > acpiprt3 at acpi0: bus -1 (PC04) > > acpiprt4 at acpi0: bus 1 (PC09) > > acpiprt5 at acpi0: bus 2 (PC0A) > > acpiprt6 at acpi0: bus 3 (P0PC) > > acpipci0 at acpi0 PCI0 > > acpicmos0 at acpi0 > > com0 at acpi0 UAR1 addr 0x3f8/0x8 irq 4: ns16550a, 16 byte fifo > > com0: console > > com1 at acpi0 UAR2 addr 0x2f8/0x8 irq 3: ns16550a, 16 byte fifo > > acpibtn0 at acpi0: PWRB > > acpicpu0 at acpi0: C1(@1 halt!), PSS > > acpicpu1 at acpi0: C1(@1 halt!), PSS > > acpicpu2 at acpi0: C1(@1 halt!), PSS > > acpicpu3 at acpi0: C1(@1 halt!), PSS > > acpicpu4 at acpi0: C1(@1 halt!), PSS > > acpicpu5 at acpi0: C1(@1 halt!), PSS > > ipmi at mainbus0 not configured > > cpu0: 1700 MHz: speeds: 1700 1500 1300 1100 800 MHz > > pci0 at mainbus0 bus 0 > > pchb0 at pci0 dev 0 function 0 "ATI SR5650 Host" rev 0x02 > > ppb0 at pci0 dev 9 function 0 "ATI SR5690 PCIE" rev 0x00: msi > > pci1 at ppb0 bus 1 > > em0 at pci1 dev 0 function 0 "Intel 82574L" rev 0x00: msi, address > > 00:25:90:13:b6:2c > > ppb1 at pci0 dev 10 function 0 "ATI SR5690 PCIE" rev 0x00: msi > > pci2 at ppb1 bus 2 > > em1 at pci2 dev 0 function 0 "Intel 82574L" rev 0x00: msi, address > > 00:25:90:13:b6:2d > > ahci0 at pci0 dev 17 function 0 "ATI SBx00 SATA" rev 0x00: apic 0 int 22, > > AHCI 1.1 > > ahci0: port 0: 3.0Gb/s > > scsibus1 at ahci0: 32 targets > > sd0 at scsibus1 targ 0 lun 0: <ATA, Samsung SSD 850, EXM0> > > naa.5002538c4060f1c2 > > sd0: 1953514MB, 512 bytes/sector, 4000797360 sectors, thin > > ohci0 at pci0 dev 18 function 0 "ATI SB700 USB" rev 0x00: apic 0 int 16, > > version 1.0, legacy support > > ohci1 at pci0 dev 18 function 1 "ATI SB700 USB" rev 0x00: apic 0 int 16, > > version 1.0, legacy support > > ehci0 at pci0 dev 18 function 2 "ATI SB700 USB2" rev 0x00: apic 0 int 17 > > usb0 at ehci0: USB revision 2.0 > > uhub0 at usb0 configuration 1 interface 0 "ATI EHCI root hub" rev 2.00/1.00 > > addr 1 > > ohci2 at pci0 dev 19 function 0 "ATI SB700 USB" rev 0x00: apic 0 int 18, > > version 1.0, legacy support > > ohci3 at pci0 dev 19 function 1 "ATI SB700 USB" rev 0x00: apic 0 int 18, > > version 1.0, legacy support > > ehci1 at pci0 dev 19 function 2 "ATI SB700 USB2" rev 0x00: apic 0 int 19 > > usb1 at ehci1: USB revision 2.0 > > uhub1 at usb1 configuration 1 interface 0 "ATI EHCI root hub" rev 2.00/1.00 > > addr 1 > > piixpm0 at pci0 dev 20 function 0 "ATI SBx00 SMBus" rev 0x3d: SMI > > iic0 at piixpm0 > > sdtemp0 at iic0 addr 0x18: stts2002 > > sdtemp1 at iic0 addr 0x19: stts2002 > > sdtemp2 at iic0 addr 0x1a: stts2002 > > sdtemp3 at iic0 addr 0x1b: stts2002 > > nvt0 at iic0 addr 0x2f: W83795G > > spdmem0 at iic0 addr 0x50: 16GB DDR3 SDRAM registered ECC PC3-12800 with > > thermal sensor > > spdmem1 at iic0 addr 0x51: 16GB DDR3 SDRAM registered ECC PC3-12800 with > > thermal sensor > > spdmem2 at iic0 addr 0x52: 16GB DDR3 SDRAM registered ECC PC3-12800 with > > thermal sensor > > spdmem3 at iic0 addr 0x53: 16GB DDR3 SDRAM registered ECC PC3-12800 with > > thermal sensor > > pcib0 at pci0 dev 20 function 3 "ATI SB700 ISA" rev 0x00 > > ppb2 at pci0 dev 20 function 4 "ATI SB600 PCI" rev 0x00 > > pci3 at ppb2 bus 3 > > vga1 at pci3 dev 4 function 0 "Matrox MGA G200eW" rev 0x0a > > wsdisplay at vga1 not configured > > ohci4 at pci0 dev 20 function 5 "ATI SB700 USB" rev 0x00: apic 0 int 18, > > version 1.0, legacy support > > pchb1 at pci0 dev 24 function 0 "AMD 10h HyperTransport" rev 0x00 > > pchb2 at pci0 dev 24 function 1 "AMD 10h Address Map" rev 0x00 > > pchb3 at pci0 dev 24 function 2 "AMD 10h DRAM Cfg" rev 0x00 > > km0 at pci0 dev 24 function 3 "AMD 10h Misc Cfg" rev 0x00 > > pchb4 at pci0 dev 24 function 4 "AMD 10h Link Cfg" rev 0x00 > > usb2 at ohci0: USB revision 1.0 > > uhub2 at usb2 configuration 1 interface 0 "ATI OHCI root hub" rev 1.00/1.00 > > addr 1 > > usb3 at ohci1: USB revision 1.0 > > uhub3 at usb3 configuration 1 interface 0 "ATI OHCI root hub" rev 1.00/1.00 > > addr 1 > > usb4 at ohci2: USB revision 1.0 > > uhub4 at usb4 configuration 1 interface 0 "ATI OHCI root hub" rev 1.00/1.00 > > addr 1 > > usb5 at ohci3: USB revision 1.0 > > uhub5 at usb5 configuration 1 interface 0 "ATI OHCI root hub" rev 1.00/1.00 > > addr 1 > > isa0 at pcib0 > > isadma0 at isa0 > > pckbc0 at isa0 port 0x60/5 irq 1 irq 12 > > pckbd0 at pckbc0 (kbd slot) > > wskbd0 at pckbd0 mux 1 > > pcppi0 at isa0 port 0x61 > > spkr0 at pcppi0 > > wbsio0 at isa0 port 0x2e/2: W83627DHG-P rev 0x73 > > wbsio0 port 0xa10/2 not configured > > usb6 at ohci4: USB revision 1.0 > > uhub6 at usb6 configuration 1 interface 0 "ATI OHCI root hub" rev 1.00/1.00 > > addr 1 > > vmm0 at mainbus0: SVM/RVI > > enable mbufs in high memory > > vscsi0 at root > > scsibus2 at vscsi0: 256 targets > > softraid0 at root > > scsibus3 at softraid0: 256 targets > > root on sd0a (6d5b2e8e67170612.a) swap on sd0b dump on sd0b > > > > Please let me know if you need anything more from me. > > > > Thank you! > > > > -Slow Servers > >
