Preface: I believe this is a regression in VirtualBox 5.x and reported it to them a while ago (https://www.virtualbox.org/ticket/14515). I'm sending it along to bugs@ just in case the trace is of interest to anyone. If not, feel free to disregard.
Symptom: When booting 5.8-stable i386 with > 1 CPU, system halts on boot before /etc/rc with "cpu1 failed to become ready". Workarounds: - Revert to VirtualBox 4.3.30. - Drop CPU count to 1. - Use 5.7-stable i386. - Use any version of amd64 with any number of CPUs. - Don't use VirtualBox. Dmesg, trace, ps, registers below. Thanks for your time. Brian Conway >> OpenBSD/i386 BOOT 3.26 boot> booting hd0a:/bsd: 9749372+1069036 [83+411760+405701]=0xb18eb8 entry point at 0x200120 [ using 818000 bytes of bsd ELF symbol table ] Copyright (c) 1982, 1986, 1989, 1991, 1993 The Regents of the University of California. All rights reserved. Copyright (c) 1995-2015 OpenBSD. All rights reserved. http://www.OpenBSD.org OpenBSD 5.8-stable (GENERIC.MP) #0: Fri Oct 2 22:21:38 UTC 2015 r...@buildi386.int.rcesoftware.com:/usr/src/sys/arch/i386/compile/GENERIC.MP cpu0: Intel(R) Core(TM) i7-3615QM CPU @ 2.30GHz ("GenuineIntel" 686-class) 2.30 GHz cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,NXE,LONG,SSE3,PCLMUL,SSSE3,CX16,SSE4.1,SSE4.2,POPCNT,AES,XSAVE,AVX,RDRAND,HV,LAHF,ITSC real mem = 804732928 (767MB) avail mem = 776245248 (740MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: date 06/23/99, BIOS32 rev. 0 @ 0xfda00, SMBIOS rev. 2.5 @ 0xe1000 (10 entries) bios0: vendor innotek GmbH version "VirtualBox" date 12/01/2006 bios0: innotek GmbH VirtualBox acpi0 at bios0: rev 2 acpi0: sleep states S0 S5 acpi0: tables DSDT FACP APIC SSDT acpi0: wakeup devices acpitimer0 at acpi0: 3579545 Hz, 32 bits acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) mtrr: CPU supports MTRRs but not enabled by BIOS cpu0: apic clock running at 1000MHz cpu1 at mainbus0: apid 1 (application processor) cpu1: Intel(R) Core(TM) i7-3615QM CPU @ 2.30GHz ("GenuineIntel" 686-class) 2.30 GHz cpu1: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,NXE,LONG,SSE3,PCLMUL,SSSE3,CX16,SSE4.1,SSE4.2,POPCNT,AES,XSAVE,AVX,RDRAND,HV,LAHF,ITSC cpu2 at mainbus0: apid 2 (application processor) cpu2: Intel(R) Core(TM) i7-3615QM CPU @ 2.30GHz ("GenuineIntel" 686-class) 2.30 GHz cpu2: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,NXE,LONG,SSE3,PCLMUL,SSSE3,CX16,SSE4.1,SSE4.2,POPCNT,AES,XSAVE,AVX,RDRAND,HV,LAHF,ITSC ioapic0 at mainbus0: apid 3 pa 0xfec00000, version 11, 24 pins acpiprt0 at acpi0: bus 0 (PCI0) acpicpu0 at acpi0: C1(@1 halt!) acpicpu1 at acpi0: C1(@1 halt!) acpicpu2 at acpi0: C1(@1 halt!) acpibat0 at acpi0: BAT0 model "1" serial 0 type VBOX oem "innotek" acpiac0 at acpi0: AC unit online acpivideo0 at acpi0: GFX0 bios0: ROM list: 0xc0000/0x8000 0xe2000/0xd000 pvbus0 at mainbus0: KVM pci0 at mainbus0 bus 0: configuration mode 1 (bios) pchb0 at pci0 dev 0 function 0 "Intel 82441FX" rev 0x02 pcib0 at pci0 dev 1 function 0 "Intel 82371SB ISA" rev 0x00 vga1 at pci0 dev 2 function 0 "InnoTek VirtualBox Graphics Adapter" rev 0x00 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) em0 at pci0 dev 3 function 0 "Intel 82540EM" rev 0x02: apic 3 int 19, address 08:00:27:c3:57:d8 "InnoTek VirtualBox Guest Service" rev 0x00 at pci0 dev 4 function 0 not configured piixpm0 at pci0 dev 7 function 0 "Intel 82371AB Power" rev 0x08: SMBus disabled ahci0 at pci0 dev 13 function 0 "Intel 82801HBM AHCI" rev 0x02: apic 3 int 21, AHCI 1.1 ahci0: device on port 0 didn't come ready, TFD: 0x171<ERR> ahci0: port 0: 3.0Gb/s scsibus1 at ahci0: 32 targets sd0 at scsibus1 targ 0 lun 0: <ATA, VBOX HARDDISK, 1.0> SCSI3 0/direct fixed t10.ATA_VBOX_HARDDISK_VBe5c20152-ef51bee2_ sd0: 10240MB, 512 bytes/sector, 20971520 sectors isa0 at pcib0 isadma0 at isa0 com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo com0: console pckbc0 at isa0 port 0x60/5 irq 1 irq 12 pckbd0 at pckbc0 (kbd slot) wskbd0 at pckbd0: console keyboard, using wsdisplay0 pms0 at pckbc0 (aux slot) wsmouse0 at pms0 mux 0 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16 vscsi0 at root scsibus2 at vscsi0: 256 targets softraid0 at root scsibus3 at softraid0: 256 targets root on sd0a (1e7613432019dde1.a) swap on sd0b dump on sd0b cpu1 failed to become ready Stopped at Debugger+0x7: leave ddb{0}> show panic the kernel did not panic ddb{0}> trace Debugger(d0aecb8b,d1f9f014,d0d1af18,d0390c7b,d0b2a368) at Debugger+0x7 cpu_boot_secondary(d1f9f000,d09d1f82,0,d03fa6c9,1) at cpu_boot_secondary+0x84 cpu_boot_secondary_processors(d05149d0,0,0,d09af8e1,d039d640) at cpu_boot_secon dary_processors+0x60 main(d0200503,d020050b,0,0,0) at main+0x7e8 ddb{0}> ps PID PPID PGRP UID S FLAGS WAIT COMMAND 6077 0 0 0 2 0x14200 zerothread 20663 0 0 0 2 0x14200 aiodoned 26137 0 0 0 2 0x14200 update 3248 0 0 0 2 0x14200 cleaner 17017 0 0 0 2 0x14200 reaper 13840 0 0 0 2 0x14200 pagedaemon 2302 0 0 0 3 0x14200 bored crypto 15051 0 0 0 2 0x14600 pfpurge 18982 0 0 0 3 0x40014200 acpi0 acpi0 21315 0 0 0 1 0x14200 idle2 7307 0 0 0 1 0x14200 idle1 965 0 0 0 3 0x14200 bored softnet 9324 0 0 0 3 0x14200 bored systqmp 29195 0 0 0 2 0x14200 systq 9770 0 0 0 3 0x40014200 idle0 31005 0 0 0 3 0x14200 kmalloc kmthread 1 0 0 0 3 0 initexec swapper * 0 -1 0 0 7 0x10200 swapper ddb{0}> show registers ds 0x10 es 0x10 fs 0x20 gs 0 edi 0xd27000 esi 0xd1f9f000 end+0x134db78 ebp 0xd0d1aee8 end+0xc9a60 ebx 0 edx 0 ecx 0xd0b2c280 kprintf_mutex eax 0x1c eip 0xd0556437 Debugger+0x7 cs 0x8 eflags 0x286 esp 0xd0d1aed8 end+0xc9a50 ss 0x10 Debugger+0x7: leave ddb{0}>
