On Sat, Nov 13, 2021 at 09:36:21AM -0700, Theo de Raadt wrote:
> Did the vm previously have a fdc? I doubt it. I am surprised fdcprobe()
> returns a success.
Turns out fdc(4) attaches only sometimes. Sometimes on cold VM boot,
sometimes only upon warm reboot.
For reference, this is my VM definition:
vm "test" {
disable
owner kn
disk "/home/kn/vm/test.img"
local interface
}
And I start it with `vmctl start -c test'. fdc does not attach.
I log in, enter reboot, watch the log and fdc attaches.
Then I fully stop the VM and start it again and fdc attaches again.
Luck has it, it seems.
I've tested a few times and got mixed results: both boots no fdc,
one of the two boots shows fdc, neither show fdc.
Does that indicate that vmm(4) fails to intialise whatever fdcprobe()
is using? I'm out of my comfort zone here.
> Klemens Nanni <k...@openbsd.org> wrote:
>
> > Just upgraded a standard test install in vmm(4) to the latest snap and
> > noticed new and garbled output:
> >
> > fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
> > intr_establish: pic pic0 pin 6: can't share type 3 with 2
> > com0 at isa0 port 0x3f8/8 irq 4: ns8250, no fifo
> > ...
> > reordering libraries:fdcresult: overrun
> > done.
> > ...
> >
> > No idea what this means, the VM works and I don't use fdc(4).
> >
> > For completeness, the vmm host is the snapshot booting
> > OpenBSD 7.0-current (GENERIC.MP) #52: Mon Oct 25 10:15:58 MDT 2021
> > and has vmm-firmware-1.14.0p0 installed.
> >
> > I have been using vmm for years, this is the first time this happens.
I'm still on the same host.
Here's are two boot logs with a reboot in between on the latest snapshot
inside the VM; one attaches fdc, the other doesn't.
Using drive 0, partition 3.
Loading......
probing: pc0 com0 mem[638K 510M a20=on]
disk: hd0+
>> OpenBSD/amd64 BOOT 3.53
\
com0: 115200 baud
switching console to com0
>> OpenBSD/amd64 BOOT 3.53
boot>
booting hd0a:/bsd: 14697752+3372048+345376+0+1167360
[1065705+128+1161264+874563]=0x15a47e8
entry point at 0xffffffff81001000
[ using 3102696 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) 1995-2021 OpenBSD. All rights reserved. https://www.OpenBSD.org
OpenBSD 7.0-current (GENERIC) #101: Tue Nov 16 17:31:10 MST 2021
dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC
real mem = 520081408 (495MB)
avail mem = 488513536 (465MB)
random: good seed from bootblocks
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xf36e0 (10 entries)
bios0: vendor SeaBIOS version "1.14.0p0-OpenBSD-vmm" date 01/01/2011
bios0: OpenBSD VMM
acpi at bios0 not configured
cpu0 at mainbus0: (uniprocessor)
cpu0: Intel(R) Core(TM) i5-3320M CPU @ 2.60GHz, 2595.32 MHz, 06-3a-09
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,CX8,SEP,PGE,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SSE3,PCLMUL,SSSE3,CX16,SSE4.1,SSE4.2,POPCNT,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,LONG,LAHF,ITSC,FSGSBASE,SMEP,ERMS,MD_CLEAR,MELTDOWN
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: smt 0, core 0, package 0
cpu0: using VERW MDS workaround
pvbus0 at mainbus0: OpenBSD
pvclock0 at pvbus0
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 RNG" rev 0x00
viornd0 at virtio0
virtio0: irq 3
virtio1 at pci0 dev 2 function 0 "Qumranet Virtio Network" rev 0x00
vio0 at virtio1: address fe:e1:bb:d1:41:41
virtio1: irq 5
virtio2 at pci0 dev 3 function 0 "Qumranet Virtio Storage" rev 0x00
vioblk0 at virtio2
scsibus1 at vioblk0: 1 targets
sd0 at scsibus1 targ 0 lun 0: <VirtIO, Block Device, >
sd0: 2048MB, 512 bytes/sector, 4194304 sectors
virtio2: irq 6
virtio3 at pci0 dev 4 function 0 "OpenBSD VMM Control" rev 0x00
vmmci0 at virtio3
virtio3: irq 7
isa0 at mainbus0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: ns8250, no fifo
com0: console
dt: 445 probes
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
root on sd0a (5f9e458ed30b39ab.a) swap on sd0b dump on sd0b
Automatic boot in progress: starting file system checks.
/dev/sd0a (5f9e458ed30b39ab.a): file system is clean; not checking
pf enabled
starting network
starting early daemons: syslogd pflogd ntpd.
starting RPC daemons:.
savecore: no core dump
checking quotas: done.
clearing /tmp
kern.securelevel: 0 -> 1
creating runtime link editor directory cache.
preserving editor files.
running rc.sysmerge
starting network daemons: sshd smtpd.
running rc.firsttime
Path to firmware: http://firmware.openbsd.org/firmware/snapshots/
Installing: intel-firmware
^Cstarting local daemons: cron.
Wed Nov 17 02:06:51 UTC 2021
OpenBSD/amd64 (test.my.domain) (tty00)
login: root
Password:
Last login: Wed Nov 17 02:01:45 on tty00
OpenBSD 7.0-current (GENERIC) #101: Tue Nov 16 17:31:10 MST 2021
Welcome to OpenBSD: The proactively secure Unix-like operating system.
Please use the sendbug(1) utility to report bugs in the system.
Before reporting a bug, please try to reproduce it with the latest
version of the code. With bug reports, please try to ensure that
enough information to reproduce the problem is enclosed, and if a
known fix for it exists, include that as well.
You have new mail.
reboottest# reboot
reorder_kernel: failed -- see /usr/share/relink/kernel/GENERIC/relink.log
syncing disks... done
vmmci0: powerdown
rebooting...
Using drive 0, partition 3.
Loading......
probing: pc0 com0 mem[638K 510M a20=on]
disk: hd0+
>> OpenBSD/amd64 BOOT 3.53
\
com0: 115200 baud
switching console to com0
>> OpenBSD/amd64 BOOT 3.53
boot>
booting hd0a:/bsd: 14697752+3372048+345376+0+1167360
[1065705+128+1161264+874563]=0x15a47e8
entry point at 0xffffffff81001000
[ using 3102696 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) 1995-2021 OpenBSD. All rights reserved. https://www.OpenBSD.org
OpenBSD 7.0-current (GENERIC) #101: Tue Nov 16 17:31:10 MST 2021
dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC
real mem = 520081408 (495MB)
avail mem = 488513536 (465MB)
random: good seed from bootblocks
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xf36e0 (10 entries)
bios0: vendor SeaBIOS version "1.14.0p0-OpenBSD-vmm" date 01/01/2011
bios0: OpenBSD VMM
acpi at bios0 not configured
cpu0 at mainbus0: (uniprocessor)
cpu0: Intel(R) Core(TM) i5-3320M CPU @ 2.60GHz, 2595.08 MHz, 06-3a-09
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,CX8,SEP,PGE,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SSE3,PCLMUL,SSSE3,CX16,SSE4.1,SSE4.2,POPCNT,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,LONG,LAHF,ITSC,FSGSBASE,SMEP,ERMS,MD_CLEAR,MELTDOWN
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: smt 0, core 0, package 0
cpu0: using VERW MDS workaround
pvbus0 at mainbus0: OpenBSD
pvclock0 at pvbus0
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 RNG" rev 0x00
viornd0 at virtio0
virtio0: irq 3
virtio1 at pci0 dev 2 function 0 "Qumranet Virtio Network" rev 0x00
vio0 at virtio1: address fe:e1:bb:d1:41:41
virtio1: irq 5
virtio2 at pci0 dev 3 function 0 "Qumranet Virtio Storage" rev 0x00
vioblk0 at virtio2
scsibus1 at vioblk0: 1 targets
sd0 at scsibus1 targ 0 lun 0: <VirtIO, Block Device, >
sd0: 2048MB, 512 bytes/sector, 4194304 sectors
virtio2: irq 6
virtio3 at pci0 dev 4 function 0 "OpenBSD VMM Control" rev 0x00
vmmci0 at virtio3
virtio3: irq 7
isa0 at mainbus0
isadma0 at isa0
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
intr_establish: pic pic0 pin 6: can't share type 3 with 2
com0 at isa0 port 0x3f8/8 irq 4: ns8250, no fifo
com0: console
dt: 445 probes
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
root on sd0a (5f9e458ed30b39ab.a) swap on sd0b dump on sd0b
Automatic boot in progress: starting file system checks.
/dev/sd0a (5f9e458ed30b39ab.a): file system is clean; not checking
pf enabled
starting network
fdcresult: overrun
starting early daemons: syslogd pflogd ntpd.
starting RPC daemons:.
savecore: no core dump
checking quotas: done.
clearing /tmp
kern.securelevel: 0 -> 1
creating runtime link editor directory cache.
preserving editor files.
starting network daemons: sshd smtpd.
starting local daemons: cron.
Wed Nov 17 02:07:36 UTC 2021
OpenBSD/amd64 (test.my.domain) (tty00)
login:
