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Unable to handle kernel NULL pointer dereference
Hi, we have a very old Red Hat 6.0 (hedwig) server with kernel
2.2.5-15smp. It froze and was then rebooted. I found the following
error in /var/spool/messages repeated 8x with different values. The 8
occurances of this error all happened withing 1 second:
Apr 17 11:29:29 warden kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000008
Apr 17 11:29:29 warden kernel: current->tss.cr3 = 00101000, %cr3 =
00101000
Apr 17 11:29:29 warden kernel: *pde = 00000000
Apr 17 11:29:29 warden kernel: Oops: 0000
Apr 17 11:29:29 warden kernel: CPU: 0
Apr 17 11:29:30 warden kernel: EIP: 0010:[exit_mmap+136/264]
Apr 17 11:29:30 warden kernel: EFLAGS: 00010202
Apr 17 11:29:30 warden kernel: eax: 00000000 ebx: c9c8dd20 ecx:
c9c8d020 edx: 00000000
Apr 17 11:29:30 warden kernel: esi: 40000000 edi: c554d360 ebp:
00012000 esp: cbd77ed4
Apr 17 11:29:30 warden kernel: ds: 0018 es: 0018 ss: 0018
Apr 17 11:29:30 warden kernel: Process sh (pid: 27648, process nr:
116, stackpage=cbd77000)
Apr 17 11:29:30 warden kernel: Stack: cbd76000 cbd77f10 c9c8d020
c011439c c554d360 c554d360 c554d360 c0118f2d
Apr 17 11:29:30 warden kernel: c554d360 cbd76000 0000000b
0000000b cbd77fbc cbd76000 cbd76000 cbd77fbc
Apr 17 11:29:30 warden kernel: c0108a25 0000000b cbd76000
40037848 40013bc8 cbd76000 cbd77f3c c6ba18cc
Apr 17 11:29:30 warden kernel: Call Trace: [mmput+28/52] [do_exit
+241/724] [do_signal+561/752] [force_sig_info+119/132] [force_sig
+17/24] [do_page_fault+409/796] [error_code+45/52]
Apr 17 11:29:30 warden kernel: [signal_return+20/24]
Apr 17 11:29:30 warden kernel: Code: 8b 40 08 ff 80 90 00 00 00 8b 53
20 85 d2 74 09 8b 43 24 89
The server has since been OK with no repeat of this error.
Should I be concerned? Many thanks, Pete.
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Re: Unable to handle kernel NULL pointer dereference
peterharding@yahoo.com writes:
> Hi, we have a very old Red Hat 6.0 (hedwig) server with kernel
> 2.2.5-15smp. It froze and was then rebooted. I found the following
> error in /var/spool/messages repeated 8x with different values. The 8
> occurances of this error all happened withing 1 second:
>
> Apr 17 11:29:29 warden kernel: Unable to handle kernel NULL pointer
> dereference at virtual address 00000008
....
> The server has since been OK with no repeat of this error.
>
> Should I be concerned? Many thanks, Pete.
Only if kernel errors or getting hacked is a problem for you.
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Re: Unable to handle kernel NULL pointer dereference
On Thu, 19 Apr 2007 09:19:18 -0400, Dan Espen wrote:
> peterharding@yahoo.com writes:
>
>> Hi, we have a very old Red Hat 6.0 (hedwig) server with kernel
>> 2.2.5-15smp. It froze and was then rebooted. I found the following
>> error in /var/spool/messages repeated 8x with different values. The 8
>> occurances of this error all happened withing 1 second:
>>
>> Apr 17 11:29:29 warden kernel: Unable to handle kernel NULL pointer
>> dereference at virtual address 00000008
> ...
>> The server has since been OK with no repeat of this error.
>>
>> Should I be concerned? Many thanks, Pete.
>
> Only if kernel errors or getting hacked is a problem for you.
Thanks for providing such a useful, deep, insightful piece of
knowledge. Go home now and have some rest, lest so much altruism and
intellectual activity get the better of you.
To the OP:
I have been going through something similar myself, and it was
due to bad memory. This does not guarantee that that's what is affecting
your machine, but it is certainly worth a try.
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Re: Unable to handle kernel NULL pointer dereference
Ivar Rosquist writes:
> On Thu, 19 Apr 2007 09:19:18 -0400, Dan Espen wrote:
>
>> peterharding@yahoo.com writes:
>>
>>> Hi, we have a very old Red Hat 6.0 (hedwig) server with kernel
>>> 2.2.5-15smp. It froze and was then rebooted. I found the following
>>> error in /var/spool/messages repeated 8x with different values. The 8
>>> occurances of this error all happened withing 1 second:
>>>
>>> Apr 17 11:29:29 warden kernel: Unable to handle kernel NULL pointer
>>> dereference at virtual address 00000008
>> ...
>>> The server has since been OK with no repeat of this error.
>>>
>>> Should I be concerned? Many thanks, Pete.
>>
>> Only if kernel errors or getting hacked is a problem for you.
>
> Thanks for providing such a useful, deep, insightful piece of
> knowledge. Go home now and have some rest, lest so much altruism and
> intellectual activity get the better of you.
>
> To the OP:
>
> I have been going through something similar myself, and it was
> due to bad memory. This does not guarantee that that's what is affecting
> your machine, but it is certainly worth a try.
So you think running RH 6.0 is a good idea?
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Re: Unable to handle kernel NULL pointer dereference
On Thu, 19 Apr 2007 10:08:03 -0400, Dan Espen wrote:
> Ivar Rosquist writes:
>
>> On Thu, 19 Apr 2007 09:19:18 -0400, Dan Espen wrote:
>>
>>> peterharding@yahoo.com writes:
>>>
>>>> Hi, we have a very old Red Hat 6.0 (hedwig) server with kernel
>>>> 2.2.5-15smp. It froze and was then rebooted. I found the following
>>>> error in /var/spool/messages repeated 8x with different values. The 8
>>>> occurances of this error all happened withing 1 second:
>>>>
>>>> Apr 17 11:29:29 warden kernel: Unable to handle kernel NULL pointer
>>>> dereference at virtual address 00000008
>>> ...
>>>> The server has since been OK with no repeat of this error.
>>>>
>>>> Should I be concerned? Many thanks, Pete.
>>>
>>> Only if kernel errors or getting hacked is a problem for you.
>>
>> Thanks for providing such a useful, deep, insightful piece of
>> knowledge. Go home now and have some rest, lest so much altruism and
>> intellectual activity get the better of you.
>>
>> To the OP:
>>
>> I have been going through something similar myself, and it was
>> due to bad memory. This does not guarantee that that's what is
>> affecting your machine, but it is certainly worth a try.
>
> So you think running RH 6.0 is a good idea?
Where in your original posting is that? What makes you think that
you can guess what I think about RH 6.0?
You replied in an arrogant and useless way to somebody asking for
help. Like I said, stay at home and come back if and when you have
anything constructive to contribute.
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Re: Unable to handle kernel NULL pointer dereference
Ivar Rosquist writes:
> On Thu, 19 Apr 2007 10:08:03 -0400, Dan Espen wrote:
>
>> Ivar Rosquist writes:
>>
>>> On Thu, 19 Apr 2007 09:19:18 -0400, Dan Espen wrote:
>>>
>>>> peterharding@yahoo.com writes:
>>>>
>>>>> Hi, we have a very old Red Hat 6.0 (hedwig) server with kernel
>>>>> 2.2.5-15smp. It froze and was then rebooted. I found the following
>>>>> error in /var/spool/messages repeated 8x with different values. The 8
>>>>> occurances of this error all happened withing 1 second:
>>>>>
>>>>> Apr 17 11:29:29 warden kernel: Unable to handle kernel NULL pointer
>>>>> dereference at virtual address 00000008
>>>> ...
>>>>> The server has since been OK with no repeat of this error.
>>>>>
>>>>> Should I be concerned? Many thanks, Pete.
>>>>
>>>> Only if kernel errors or getting hacked is a problem for you.
>>>
>>> Thanks for providing such a useful, deep, insightful piece of
>>> knowledge. Go home now and have some rest, lest so much altruism and
>>> intellectual activity get the better of you.
>>>
>>> To the OP:
>>>
>>> I have been going through something similar myself, and it was
>>> due to bad memory. This does not guarantee that that's what is
>>> affecting your machine, but it is certainly worth a try.
>>
>> So you think running RH 6.0 is a good idea?
>
> Where in your original posting is that? What makes you think that
> you can guess what I think about RH 6.0?
>
> You replied in an arrogant and useless way to somebody asking for
> help. Like I said, stay at home and come back if and when you have
> anything constructive to contribute.
The OP says pretty clearly that he's running RH 6.0.
You see a memory problem, I see a very old OS problem.
The memory may or may not be bad, but running that OS
will still be a problem whether the memory is bad or not.
Any way, sarcasm is a fine art, you should learn to appreciate
it. Whether the OP appreciated it, we haven't heard
but he'd do well to pay heed.
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Re: Unable to handle kernel NULL pointer dereference
On Apr 19, 10:08 am, Dan Espen
wrote:
> So you think running RH 6.0 is a good idea?
It isn't possible to give an authoritative answer on that one with
the
information provided by the OP. We have no idea what kind of a
network the machine is on, or if it is on any network at all. New
and better are not interchangable concepts without a context.
Steve
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Re: Unable to handle kernel NULL pointer dereference
Dan Espen wrote:
>Any way, sarcasm is a fine art, you should learn to appreciate
You should learn how to use it. All you've done is come off
like a total idiot totally lacking in wit.
--
Floyd L. Davidson
Ukpeagvik (Barrow, Alaska) floyd@apaflo.com
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Re: Unable to handle kernel NULL pointer dereference
floyd@apaflo.com (Floyd L. Davidson) writes:
> Dan Espen wrote:
>>Any way, sarcasm is a fine art, you should learn to appreciate
>
> You should learn how to use it. All you've done is come off
> like a total idiot totally lacking in wit.
Well, before I get everyone yelling at me,
I guess I'd better admit my mistake.
Sorry, seemed funny to me.
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Re: Unable to handle kernel NULL pointer dereference
Dan Espen wrote:
>floyd@apaflo.com (Floyd L. Davidson) writes:
>
>> Dan Espen wrote:
>>>Any way, sarcasm is a fine art, you should learn to appreciate
>>
>> You should learn how to use it. All you've done is come off
>> like a total idiot totally lacking in wit.
>
>Well, before I get everyone yelling at me,
>I guess I'd better admit my mistake.
>
>Sorry, seemed funny to me.
Apologies on Usenet are so rare as to be a collector's item.
Your status of high esteem is more than restored.
--
Floyd L. Davidson
Ukpeagvik (Barrow, Alaska) floyd@apaflo.com