OpenVZ Forum


Home » General » Support » Kernel OOPS
Kernel OOPS [message #3365] Wed, 24 May 2006 14:34 Go to next message
linuxtuxie is currently offline  linuxtuxie
Messages: 4
Registered: May 2006
Junior Member
Hello all,

I have a debian sarge hardware node and the 2.6.8 kernel has been fetched from kernel.org patched with openvz-022stab07.
I also used the smp config file. Additionally I did enable xfs support.

Now however I received a kernel oops. The kernel oops occured during a copy action (cp).

I have pasted the message I saw on the terminal below

Does this make sense to anybody?

Any help is gratefully appreciated... Smile

Regards,
Kim

Unable to handle kernel paging request at virtual address 9b4a19fc

 printing eip:

c011a843

*pde = 00000000

Oops: 0000 [#1]

SMP   

Modules linked in: simfs vznetdev vzdquota vzmon vzdev af_packet ipt_length ipt_
ttl ipt_tcpmss ipt_TCPMSS iptable_mangle iptable_filter ipt_multiport ipt_limit 
ipt_tos ipt_REJECT ip_tables sg sr_mod ehci_hcd ohci_hcd usbcore tg3 e100 mii id
e_cd cdrom ide_scsi

CPU:    11, VCPU: 393221:524295

EIP:    0060:[<c011a843>]    Not tainted

EFLAGS: 00010086   (2.6.8-elex-openvz-022stab077) 

EIP is at activate_task+0x33/0x1b0

eax: 9b4a19e0   ebx: c354b000   ecx: 000001a4   edx: 0001e17e

esi: f3e1b260   edi: 00000001   ebp: dbeb5048   esp: dbeb5018

ds: 007b   es: 007b   ss: 0068

Unable to handle kernel paging request at virtual address 00090008

 printing eip:

c01063f7

*pde = 00000000


File erased !

[Updated on: Wed, 24 May 2006 16:40] by Moderator

Report message to a moderator

Re: Kernel OOPS [message #3368 is a reply to message #3365] Wed, 24 May 2006 16:42 Go to previous messageGo to next message
Vasily Tarasov is currently offline  Vasily Tarasov
Messages: 1345
Registered: January 2006
Senior Member
1) Is there the whole oops text in /var/log/messages?
I mean, that you've posted not all information about oops: usually call trace exists in oops text, something like that:
Quote:

...
kernel: Call Trace:
kernel: [prune_dcache+246/320] prune_dcache+0xf6/0x140
kernel: [shrink_dcache_memory+27/80] shrink_dcache_memory+0x1b/0x50
kernel: [shrink_slab+311/400] shrink_slab+0x137/0x190
kernel: [balance_pgdat+416/656] balance_pgdat+0x1a0/0x290
kernel: [kswapd+221/240] kswapd+0xdd/0xf0
kernel: [kswapd+0/240] kswapd+0x0/0xf0
kernel: [autoremove_wake_function+0/64] autoremove_wake_function+0x0/0x40
kernel: [autoremove_wake_function+0/64] autoremove_wake_function+0x0/0x40
kernel: [kernel_thread_helper+5/16] kernel_thread_helper+0x5/0x10
kernel: Code: 83 78 24 00 75 0a 50 e8 10 fe ff ff 83 c4 04 c3 50 e8 06
ff ff ff 83 c4 04 c3 89 f6 53 8b 5c 24 08 85 db 74 55 8b 83 98 00 00 00
<8b> 40 24 83 bb 24 01 00 00 20 75 08 0f 0b 4c 04 f1 7e 45 c0 85
...


Such information is highly usefull for us, to understand the reason of oops.

2) Do you use xfs on /vz partion?

3) Have you copied inside VPS or on HN?

Thanks.

Report message to a moderator

Re: Kernel OOPS [message #3369 is a reply to message #3365] Wed, 24 May 2006 16:42 Go to previous messageGo to next message
kir is currently offline  kir
Messages: 1645
Registered: August 2005
Location: Moscow, Russia
Senior Member
Can you please check if oops text is available in some file (like /var/log/messages) and if yes, give us the full oops text (the best way is to file a bug to http://bugzilla.openvz.org/).

Kir Kolyshkin
http://static.openvz.org/userbars/openvz-developer.png

Report message to a moderator

Re: Kernel OOPS [message #3370 is a reply to message #3365] Wed, 24 May 2006 19:57 Go to previous messageGo to next message
linuxtuxie is currently offline  linuxtuxie
Messages: 4
Registered: May 2006
Junior Member


1) Is there the whole oops text in /var/log/messages?
No, I do not see any trace stack in my complete /var/log folder

2) Do you use xfs on /vz partion?
Yes I use xfs for /vz on an lvm volume (and also for the other partitions btw)

3) Have you copied inside VPS or on HN?
I copied data on the Hn from one VPS to antoher. The machine has 2 VPS's, both VPS's where running

The info I saw has been copied from the serial console, in our company we use serial port redirection and all data is being sent to the serial port which is being captured by device. The info I already pasted is comming from there

Regards,
Kim

Report message to a moderator

Re: Kernel OOPS [message #3371 is a reply to message #3370] Wed, 24 May 2006 20:11 Go to previous messageGo to next message
kir is currently offline  kir
Messages: 1645
Registered: August 2005
Location: Moscow, Russia
Senior Member
That's excellent that you have serial console set up! Can you attach the full oops report here, including some preceding lines as well?

Kir Kolyshkin
http://static.openvz.org/userbars/openvz-developer.png

Report message to a moderator

Re: Kernel OOPS [message #3373 is a reply to message #3371] Wed, 24 May 2006 21:39 Go to previous messageGo to next message
linuxtuxie is currently offline  linuxtuxie
Messages: 4
Registered: May 2006
Junior Member
Hi Kir,

Well, the only output I saw on my serial console is the one listed in the original post Sad

My serial console redirection has been set up in grub with the following statements:

serial --unit=0 --speed=9600 --word=8 --parity=no --stop=1
terminal --timeout=10 serial console

title Debian GNU/Linux, kernel 2.6.8-elex-openvz-022stab077
root (hd0,0)
kernel /vmlinuz-2.6.8-openvz-022stab077 root=/dev/md1 ro console=tty0 console=ttyS0,9600n
initrd /initrd.img-2.6.8-openvz-022stab077
savedefault
boot

I have also enabled a tty in /etc/inittab:

T0:23:respawn:/sbin/getty -L ttyS0 9600 vt100

Regards,
Kim

Report message to a moderator

Re: Kernel OOPS [message #3380 is a reply to message #3373] Thu, 25 May 2006 07:35 Go to previous messageGo to next message
Vasily Tarasov is currently offline  Vasily Tarasov
Messages: 1345
Registered: January 2006
Senior Member
I see from your oops, that kernel can't even print full oops text. When kernel tries to output information second oops occurs:
Quote:

ds: 007b   es: 007b   ss: 0068

Unable to handle kernel paging request at virtual address 9b4a19fc

 printing eip:

c011a843

*pde = 00000000

....

ds: 007b   es: 007b   ss: 0068

Unable to handle kernel paging request at virtual address 00090008

 printing eip:

c01063f7

*pde = 00000000



Can you check memory on your node please?

BTW, what did happen after oops? The node in question hanged or rebooted or worked further?

Thanks.

Report message to a moderator

Re: Kernel OOPS [message #3381 is a reply to message #3373] Thu, 25 May 2006 11:46 Go to previous messageGo to next message
linuxtuxie is currently offline  linuxtuxie
Messages: 4
Registered: May 2006
Junior Member
Hi,

Here is a screendump of the current mem usage:

Cpu(s): 0.0% us, 0.0% sy, 0.0% ni, 100.0% id, 0.0% wa, 0.0% hi, 0.0% si
Mem: 3100624k total, 3079184k used, 21440k free, 39664k buffers
Swap: 1959912k total, 0k used, 1959912k free, 2863528k cached

After the oops the complete machine hanged and I saw the earlier posted message on the serial console, the only action I could take was cutting the power of the machine and starting it up again.

Regards,
Kim

Report message to a moderator

Re: Kernel OOPS [message #3382 is a reply to message #3381] Thu, 25 May 2006 11:54 Go to previous message
Vasily Tarasov is currently offline  Vasily Tarasov
Messages: 1345
Registered: January 2006
Senior Member
Quote:

Can you check memory on your node please?

I meant check your RAM for errors Rolling Eyes
You can use something like memtest86 programm.

Report message to a moderator

Previous Topic: Few questions, please help
Next Topic: Network problems
Goto Forum:
  

[ Syndicate this forum (XML) ] [ RSS ] [ PDF ]

Current Time: Thu Aug 08 23:48:49 GMT 2024

Total time taken to generate the page: 0.02847 seconds
Powered by FUDforum Powered by Virtuozzo Containers