[9fans] 9vx srashes when idle

[9fans] 9vx srashes when idle

[Dimitry Golubovsky]

Hi,

I have observed crash of 9vx when left idle (never crashed when doing anything).

I get this:

./9vx -t

init: starting /bin/rc
upas/fs: opening /mail/box/dima/mbox: '/mail/box/dima' does not exist
echo: write error: unknown control message "accelerated"
echo: write error: unknown control message "res 3"

-- at this point, 9vx is up and running, output below is at the moment of crash

cpu0: registers for stats 76
FLAGS=0 TRAP=500 ECODE=0 PC=14A5D USP=FFFFE10
  AX 00000000  BX 0FFFFE50  CX 00000029  DX 00022F14
  SI 0FFFFE68  DI 000336B0  BP 00000000
9vx panic: unknown trap/intr: 0x500
aborting, to dump core.
Aborted

9vx was checked from code.swtch.com and rebuilt, no effect.

Another time 9vx was more stable, but I got:

invalid opcode 67 6e 61 at eip 00021670

at some time after I started 9vx -t.

Hope this information is useful.

--
Dimitry Golubovsky

Anywhere on the Web

Re: [9fans] 9vx srashes when idle

[ron minnich]

this info needs more info.

what OS? What version? What compiler? What version?

thanks

ron

Re: [9fans] 9vx srashes when idle

[Dmitry Golubovsky]

Hi,

On Oct 26, 1:06 am, rminn...@gmail.com (ron minnich) wrote:
> this info needs more info.
>
> what OS? What version? What compiler? What version?
>
> thanks
>
> ron

uname -a
Linux archgui 2.6.27-ARCH #1 SMP PREEMPT Sun Dec 21 09:31:10 UTC 2008
i686 QEMU Virtual CPU version 0.9.1 AuthenticAMD GNU/Linux

that is, a VM (Arch Linux) running under KVM on Ubuntu Intrepid (64bit
host)

kvm --help
QEMU PC emulator version 0.9.1 (kvm-72), Copyright (c) 2003-2008
Fabrice Bellard


gcc --version
gcc (GCC) 4.3.2
Copyright (C) 2008 Free Software Foundation, Inc.

Thanks.

Dmitry

Re: [9fans] 9vx srashes when idle

[Dmitry Golubovsky]

On Oct 26, 1:06 am, rminn...@gmail.com (ron minnich) wrote:
> this info needs more info.
>
> what OS? What version? What compiler? What version?
>
> thanks
>
> ron

Died again (less than a minute after start)

I started 9vx -t, maximized 9vx window, killed acme and shell window
that are created by the profile, opened one shell window, did notning
in it, put 9vx window into background.

./9vx -t

init: starting /bin/rc
upas/fs: opening /mail/box/dima/mbox: '/mail/box/dima' does not exist
echo: write error: unknown control message "accelerated"
echo: write error: unknown control message "res 3"
cpu0: registers for stats 76
FLAGS=0 TRAPP0 ECODE=0 PCsB1 USPÿFFCD8
  AX 00000000  BX 0FFFFE64  CX 0FFFFE83  DX 00000000
  SI 0FFFFDF4  DI 00022B45  BP 00000000
9vx panic: unknown trap/intr: 0x500
aborting, to dump core.
Aborted

Another experiment.

Started 9vx -t, maximized window, put it into background. It was there
for several minutes, no crash. Then I killed initial acme and shell
window, started new shell window. It chashed:

init: starting /bin/rc
upas/fs: opening /mail/box/dima/mbox: '/mail/box/dima' does not exist
echo: write error: unknown control message "accelerated"
echo: write error: unknown control message "res 3"
cpu0: registers for stats 76
FLAGS=0 TRAPP0 ECODE=0 PC{CA USPÿFFD44
  AX 00000000  BX 00022B40  CX 0FFFFDF4  DX 00022000
  SI 0FFFFDF4  DI 00000000  BP 00000000
9vx panic: unknown trap/intr: 0x500
aborting, to dump core.
Aborted

Re: [9fans] 9vx srashes when idle

[Dmitry Golubovsky]

One more kind of trap (did not cause crash) - not sure when exactly it
happened:

76 stats fault 0x33c no segment
segment 0xf000000 0x10000000
segment 0x1000 0x1b000
segment 0x1b000 0x22000
segment 0x22000 0x3a000
76 stats: unhandled fault va=33c [97df233c] eip=33c
cpu0: registers for stats 76
FLAGS=0 TRAP=0 ECODE=0 PC=33C USP=FFFFE48
  AX 00038F1C  BX 0FFFFDF4  CX 00022D08  DX 00039254
  SI 00038F18  DI 00038F1C  BP 00000000

Has anyone else seen these dumps with 9vx?

Re: [9fans] 9vx srashes when idle

[ron minnich]

On Mon, Oct 26, 2009 at 3:20 AM, Dmitry Golubovsky <golubovsky@gmail.com> wrote:
> One more kind of trap (did not cause crash) - not sure when exactly it
> happened:
>
> 76 stats fault 0x33c no segment
> segment 0xf000000 0x10000000
> segment 0x1000 0x1b000
> segment 0x1b000 0x22000
> segment 0x22000 0x3a000
> 76 stats: unhandled fault va=33c [97df233c] eip=33c
> cpu0: registers for stats 76
> FLAGS=0 TRAP=0 ECODE=0 PC=33C USP=FFFFE48
>  AX 00038F1C  BX 0FFFFDF4  CX 00022D08  DX 00039254
>  SI 00038F18  DI 00038F1C  BP 00000000
>
> Has anyone else seen these dumps with 9vx?

never seen anything like it, which leads me to wonder if you are not
tickling a bug in the virtualization.

ron

Re: [9fans] 9vx srashes when idle

[Dmitry Golubovsky]

On Oct 26, 11:09 am, rminn...@gmail.com (ron minnich) wrote:

>
> > Has anyone else seen these dumps with 9vx?
>
> never seen anything like it, which leads me to wonder if you are not
> tickling a bug in the virtualization.
>
> ron- Hide quoted text -
>
> - Show quoted text -

It could be since it is "twice" virtualized ;)