Re: kern/44069: NetBSD-current hangs during boot under Linux kvm emulation

[Andreas Gustafsson <gson%gson.org@localhost>]

Jukka,

Thanks for taking the time to analyze this issue.

>  > The problem was introduced, or perhaps
>  > exposed, by following commit by toshii:
[...]
>  Interestingly, the commit message tells the exact opposite story:
>  
>  "revision 1.79
>   date: 2009/11/04 14:39:17;  author: toshii;  state: Exp;  lines: +3 -3
>  
>   Don't return an error if the _PIC method isn't found.
>   It's an optional method and not found in kvm/qemu.
>   ----------------------------"

That's not quite the opposite story - it's consistent with the problem
being exposed by rather than caused by toshii's commit.  For example,
the hang could happen later in the function, in code that was never
executed under KVM before the commit, because the function returned
prematurely when _PIC wasn't found.

>  Has NetBSD worked on KVM before? 

As I said in the bug report, versions from before the commit do work,
or at the very least they boot.  Here's a summary of the source dates
I have tested:

   2009.08.23.20.57.40 ok
   2009.10.25.23.42.58 ok
   2009.10.29.14.32.18 ok
   2009.11.02.17.17.34 ok
   2009.11.04.13.29.45 ok
   2009.11.04.13.32.39 ok
   2009.11.04.14.39.17 fails
   2009.11.04.15.37.39 fails
   2009.11.04.18.11.11 fails
   2009.11.06.15.41.58 fails
   2009.11.07.19.54.17 fails
   2009.11.15.23.29.18 fails
   2009.11.23.05.01.12 fails
   2009.12.31.15.42.46 fails
   2010.04.25.22.50.11 fails
   2010.07.07.11.42.18 fails

> Can you post the full dmesg?

Here's the console output from the 2009.11.04.13.32.39 build booting in kvm.

Loading /stand/i386/5.99.21/modules/ffs/ffs.kmod |/-\|/-\|/-\|/-\|/-\|/-\|/ 
Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
    2006, 2007, 2008, 2009
    The NetBSD Foundation, Inc.  All rights reserved.
Copyright (c) 1982, 1986, 1989, 1991, 1993
    The Regents of the University of California.  All rights reserved.

NetBSD 5.99.21 (GENERIC) #0: Mon Nov  8 19:13:08  2010
        
gson@guesthouse:/bracket/work/2009.11.04.13.32.39/obj/sys/arch/i386/compile/GENERIC
total memory = 383 MB
avail memory = 366 MB
mainbus0 (root)
cpu0 at mainbus0 apid 0: Intel 686-class, 2400MHz, id 0x623
ioapic0 at mainbus0 apid 1
acpi0 at mainbus0: Intel ACPICA 20090730
pckbc1 at acpi0 (KBD, PNP0303) (kbd port): io 0x60,0x64 irq 1
pckbc2 at acpi0 (MOU, PNP0F13) (aux port): irq 12
FDC0 (PNP0700) at acpi0 not configured
LPT (PNP0400) at acpi0 not configured
COM1 (PNP0501) at acpi0 not configured
hpet0 at acpi0 (HPET, PNP0103-0): mem 0xfed00000-0xfed003ff
apm0 at acpi0: Power Management spec V1.2
pckbd0 at pckbc1 (kbd slot)
pckbc1: using irq 1 for kbd slot
wskbd0 at pckbd0 mux 1
pms0 at pckbc1 (aux slot)
pckbc1: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
pci0 at mainbus0 bus 0: configuration mode 1
pchb0 at pci0 dev 0 function 0: vendor 0x8086 product 0x1237 (rev. 0x02)
pcib0 at pci0 dev 1 function 0: vendor 0x8086 product 0x7000 (rev. 0x00)
piixide0 at pci0 dev 1 function 1: Intel 82371SB IDE Interface (PIIX3) (rev. 
0x00)
piixide0: primary channel interrupting at irq 14
atabus0 at piixide0 channel 0
piixide0: secondary channel interrupting at irq 15
atabus1 at piixide0 channel 1
piixpm0 at pci0 dev 1 function 3
piixpm0: vendor 0x8086 product 0x7113 (rev. 0x03)
piixpm0: 24-bit timer
piixpm0: interrupting at irq 9
iic0 at piixpm0: I2C bus
vga1 at pci0 dev 2 function 0: vendor 0x1013 product 0x00b8 (rev. 0x00)
wsdisplay0 at vga1 kbdmux 1
drm at vga1 not configured
re0 at pci0 dev 3 function 0: RealTek 8139C+ 10/100BaseTX (rev. 0x20)
re0: interrupting at irq 11
re0: Ethernet address 52:54:00:12:34:56
rlphy0 at re0 phy 0: Realtek internal PHY
rlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
isa0 at pcib0
lpt0 at isa0 port 0x378-0x37b irq 7
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com0: console
attimer0 at isa0 port 0x40-0x43
pcppi0 at isa0 port 0x61
midi0 at pcppi0: PC speaker
sysbeep0 at pcppi0
isapnp0 at isa0 port 0x279
npx0 at isa0 port 0xf0-0xff
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
attimer0: attached to pcppi0
wd0 at atabus0 drive 0: <QEMU HARDDISK>
wd0: 512 MB, 1040 cyl, 16 head, 63 sec, 512 bytes/sect x 1048576 sectors
atapibus0 at atabus1: 2 targets
cd0 at atapibus0 drive 0: <QEMU DVD-ROM, QM00003, 0.12.3> cdrom removable
Kernelized RAIDframe activated
pad0: outputs: 44100Hz, 16-bit, stereo
audio0 at pad0: half duplex, playback, capture
boot device: wd0
root on wd0a dumps on wd0b
root file system type: ffs
Mon Nov  8 19:23:50 UTC 2010
Starting root file system check:
/dev/rwd0a: file system is clean; not checking
swapctl: setting dump device to /dev/wd0b
swapctl: adding /dev/wd0b as swap device at priority 0
Starting file system checks:
/dev/rwd0a: file system is mounted read-write on /; not checking
Setting tty flags.
Setting sysctl variables:
ddb.onpanic: 1 -> 0
Starting network.
/etc/rc: WARNING: $hostname not set.
IPv6 mode: host
Configuring network interfaces:.
Adding interface aliases:.
Building databases: dev, utmp, utmpx, services done
Starting syslogd.
Mounting all filesystems...
Clearing temporary files.
Creating a.out runtime link editor directory cache.
Checking quotas: done.
swapctl: setting dump device to /dev/wd0b
Starting virecover.
Checking for core dump...
savecore - - - no core dump
Starting local daemons:.
Updating motd.
postfix: rebuilding /etc/mail/aliases (missing /etc/mail/aliases.db)
newaliases: warning: valid_hostname: empty hostname
newaliases: fatal: unable to use my own hostname
Nov  8 19:23:54  postfix/sendmail[316]: fatal: unable to use my own hostname
/etc/rc.d/postfix reported failure status 1
Starting inetd.
Starting cron.
The following components reported failures:
    /etc/rc.d/postfix
See /var/run/rc.log for more information.
Mon Nov  8 19:23:54 UTC 2010

NetBSD/i386 (Amnesiac) (console)

login:

-- 
Andreas Gustafsson, gson%gson.org@localhost