* Oops / BUG? (2.6.17.2 on VIA Epia CL6000)
@ 2006-07-02 11:15 Udo van den Heuvel
2006-07-02 11:21 ` Arjan van de Ven
0 siblings, 1 reply; 7+ messages in thread
From: Udo van den Heuvel @ 2006-07-02 11:15 UTC (permalink / raw)
To: linux-kernel; +Cc: Folkert van Heusden
Hello,
On my otherwise stable Via EPIA CL6000 I experienced an OOPS.
Hardware should be OK. I was unable to reproduce the event, so far.
In what part of the kernel did things go wrong?
What can I do to help fix the bug? (if it is indeed a bug)
Kind regards,
Udo
Jul 2 07:11:23 epia kernel: BUG: unable to handle kernel paging request
at virtual address 52786fdd
Jul 2 07:11:23 epia kernel: printing eip:
Jul 2 07:11:23 epia kernel: 52786fdd
Jul 2 07:11:23 epia kernel: *pde = 00000000
Jul 2 07:11:23 epia kernel: Oops: 0000 [#1]
Jul 2 07:11:23 epia kernel: PREEMPT
Jul 2 07:11:23 epia kernel: Modules linked in: eeprom sch_tbf xt_string
xt_MARK xt_length xt_tcpmss xt_mac xt_mark vt1211 hwmon_vid i2c_isa
ipt_ttl ipt_owner ip_nat_irc ip_conntrack_irc ipt_REDIRECT ipt_tos
ip_nat_ftp ip_conntrack_ftp ip_nat_h323 ip_conntrack_h323 ipt_MASQUERADE
ipt_LOG ipt_TCPMSS ipt_REJECT xt_limit xt_state ipt_TARPIT
iptable_filter ipt_TOS iptable_mangle xt_NOTRACK iptable_raw binfmt_misc
lp parport_pc parport nvram ehci_hcd uhci_hcd snd_via82xx snd_ac97_codec
snd_ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq
snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_page_alloc
snd_mpu401_uart snd_rawmidi snd_seq_device snd i2c_viapro
Jul 2 07:11:23 epia kernel: CPU: 0
Jul 2 07:11:23 epia kernel: EIP:
0060:[phys_startup_32+1382576093/-1073741824] Not tainted VLI
Jul 2 07:11:23 epia kernel: EIP: 0060:[<52786fdd>] Not tainted VLI
Jul 2 07:11:23 epia kernel: EFLAGS: 00010296 (2.6.17.2 #3)
Jul 2 07:11:23 epia kernel: EIP is at 0x52786fdd
Jul 2 07:11:23 epia kernel: eax: 00000000 ebx: 11d3b28e ecx:
0000000d edx: 00000001
Jul 2 07:11:23 epia kernel: esi: 5d21e8b6 edi: 9faa859e ebp:
ca33023d esp: dd071f38
Jul 2 07:11:23 epia kernel: ds: 007b es: 007b ss: 0068
Jul 2 07:11:23 epia kernel: Process named (pid: 1431,
threadinfo=dd070000 task=ddf61a90)
Jul 2 07:11:23 epia kernel: Stack: 2dad9f88 1b77f396 5f57be35 0e045382
fb72cd9d 9ca3ed70 29739bee 90ca7336
Jul 2 07:11:23 epia kernel: cdb39230 d727e3ff b41a68a9 d1962a09
b9b3a8a9 1109a681 a447b354 fb7969e6
Jul 2 07:11:23 epia kernel: 73a0d873 06446b61 1be5d2eb 16872e4f
c887aede 1fcb7034 7902b644 ac07b40b
Jul 2 07:11:23 epia kernel: Call Trace:
Jul 2 07:11:30 epia kernel: Code: Bad EIP value.
Jul 2 07:11:30 epia kernel: EIP:
[phys_startup_32+1382576093/-1073741824] 0x52786fdd SS:ESP 0068:dd071f38
Jul 2 07:11:30 epia kernel: EIP: [<52786fdd>] 0x52786fdd SS:ESP
0068:dd071f38
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Oops / BUG? (2.6.17.2 on VIA Epia CL6000)
2006-07-02 11:15 Oops / BUG? (2.6.17.2 on VIA Epia CL6000) Udo van den Heuvel
@ 2006-07-02 11:21 ` Arjan van de Ven
2006-07-02 11:24 ` Udo van den Heuvel
0 siblings, 1 reply; 7+ messages in thread
From: Arjan van de Ven @ 2006-07-02 11:21 UTC (permalink / raw)
To: Udo van den Heuvel; +Cc: linux-kernel, Folkert van Heusden
On Sun, 2006-07-02 at 13:15 +0200, Udo van den Heuvel wrote:
> Hello,
>
> On my otherwise stable Via EPIA CL6000 I experienced an OOPS.
> Hardware should be OK. I was unable to reproduce the event, so far.
> In what part of the kernel did things go wrong?
> What can I do to help fix the bug? (if it is indeed a bug)
Hi,
something really bad happened (the processor jumped into hyperspace);
however it looks like automatic symbol resolving isn't working;
could you check if CONFIG_KALLSYMS is enabled in your kernel config?
With that enabled, debugability tends to go up bigtime since at least
the backtrace becomes human readable...
Greetings,
Arjan van de Ven
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Oops / BUG? (2.6.17.2 on VIA Epia CL6000)
2006-07-02 11:21 ` Arjan van de Ven
@ 2006-07-02 11:24 ` Udo van den Heuvel
2006-07-02 11:38 ` Arjan van de Ven
0 siblings, 1 reply; 7+ messages in thread
From: Udo van den Heuvel @ 2006-07-02 11:24 UTC (permalink / raw)
To: linux-kernel; +Cc: Arjan van de Ven
Arjan van de Ven wrote:
> On Sun, 2006-07-02 at 13:15 +0200, Udo van den Heuvel wrote:
>> Hello,
>>
>> On my otherwise stable Via EPIA CL6000 I experienced an OOPS.
>> Hardware should be OK. I was unable to reproduce the event, so far.
>> In what part of the kernel did things go wrong?
>> What can I do to help fix the bug? (if it is indeed a bug)
>
> Hi,
>
> something really bad happened (the processor jumped into hyperspace);
> however it looks like automatic symbol resolving isn't working;
> could you check if CONFIG_KALLSYMS is enabled in your kernel config?
> With that enabled, debugability tends to go up bigtime since at least
> the backtrace becomes human readable...
I have:
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
# CONFIG_KALLSYMS_EXTRA_PASS is not set
Kind regards,
Udo
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Oops / BUG? (2.6.17.2 on VIA Epia CL6000)
2006-07-02 11:24 ` Udo van den Heuvel
@ 2006-07-02 11:38 ` Arjan van de Ven
2006-07-02 11:46 ` Udo van den Heuvel
2006-07-02 21:15 ` Jan Engelhardt
0 siblings, 2 replies; 7+ messages in thread
From: Arjan van de Ven @ 2006-07-02 11:38 UTC (permalink / raw)
To: Udo van den Heuvel; +Cc: linux-kernel
On Sun, 2006-07-02 at 13:24 +0200, Udo van den Heuvel wrote:
> Arjan van de Ven wrote:
> > On Sun, 2006-07-02 at 13:15 +0200, Udo van den Heuvel wrote:
> >> Hello,
> >>
> >> On my otherwise stable Via EPIA CL6000 I experienced an OOPS.
> >> Hardware should be OK. I was unable to reproduce the event, so far.
> >> In what part of the kernel did things go wrong?
> >> What can I do to help fix the bug? (if it is indeed a bug)
> >
> > Hi,
> >
> > something really bad happened (the processor jumped into hyperspace);
> > however it looks like automatic symbol resolving isn't working;
> > could you check if CONFIG_KALLSYMS is enabled in your kernel config?
> > With that enabled, debugability tends to go up bigtime since at least
> > the backtrace becomes human readable...
>
> I have:
>
> CONFIG_KALLSYMS=y
Hoi,
hmmmmm then something really bad happened, so bad that even the
backtrace is corrupted ;(
I'm sorry to say but unless you already have a suspect, those are really
really hard to diagnose or fix. One thing you can do is remove all
modules you don't actually use (just from a statistical pov that reduces
the risk of it repeating)... and hope maybe a next backtrace does
provide more information.
Greetings,
Arjan van de Ven
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Oops / BUG? (2.6.17.2 on VIA Epia CL6000)
2006-07-02 11:38 ` Arjan van de Ven
@ 2006-07-02 11:46 ` Udo van den Heuvel
2006-07-02 21:15 ` Jan Engelhardt
1 sibling, 0 replies; 7+ messages in thread
From: Udo van den Heuvel @ 2006-07-02 11:46 UTC (permalink / raw)
To: linux-kernel; +Cc: Arjan van de Ven
Arjan van de Ven wrote:
> On Sun, 2006-07-02 at 13:24 +0200, Udo van den Heuvel wrote:
>
>> CONFIG_KALLSYMS=y
>
> hmmmmm then something really bad happened, so bad that even the
> backtrace is corrupted ;(
>
> I'm sorry to say but unless you already have a suspect, those are really
> really hard to diagnose or fix. One thing you can do is remove all
> modules you don't actually use (just from a statistical pov that reduces
> the risk of it repeating)... and hope maybe a next backtrace does
> provide more information.
Later another one happened with less info. Maybe the `different`
location helps?
Jul 2 09:07:30 epia kernel: BUG: unable to handle kernel paging request
at virtual address fec9bd89
Jul 2 09:07:30 epia kernel: printing eip:
Jul 2 09:07:30 epia kernel: fec9bd89
Jul 2 09:07:30 epia kernel: *pde = 00000000
Jul 2 09:07:30 epia kernel: Oops: 0000 [#1]
Jul 2 09:07:30 epia kernel: PREEMPT
Jul 2 09:07:36 epia kernel: Modules linked in: sch_tbf xt_string
xt_MARK xt_length xt_tcpmss xt_mac xt_mark vt1211 hwmon_vid i2c_isa
ipt_ttl ipt_owner ip_nat_irc ip_conntrack_irc ipt_REDIRECT ipt_tos
ip_nat_ftp ip_conntrack_ftp ip_nat_h323 ip_conntrack_h323 ipt_MASQUERADE
ipt_LOG ipt_TCPMSS ipt_REJECT xt_limit xt_state ipt_TARPIT
iptable_filter ipt_TOS iptable_mangle xt_NOTRACK iptable_raw binfmt_misc
lp parport_pc parport nvram ehci_hcd snd_via82xx snd_ac97_codec
snd_ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq
uhci_hcd snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_page_alloc
snd_mpu401_uart snd_rawmidi snd_seq_device snd i2c_viapro
Jul 2 09:07:42 epia kernel: CPU: 0
Jul 2 09:07:42 epia kernel: EIP: 0060:[pg0+1049402761/1069728768]
Not tainted VLI
Jul 2 09:07:42 epia kernel: EIP: 0060:[<fec9bd89>] Not tainted VLI
Jul 2 09:07:42 epia kernel: EFLAGS: 00010296 (2.6.17.2 #3)
Jul 2 09:07:42 epia kernel: EIP is at 0xfec9bd89
Kind regards,
Udo
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Oops / BUG? (2.6.17.2 on VIA Epia CL6000)
2006-07-02 11:38 ` Arjan van de Ven
2006-07-02 11:46 ` Udo van den Heuvel
@ 2006-07-02 21:15 ` Jan Engelhardt
1 sibling, 0 replies; 7+ messages in thread
From: Jan Engelhardt @ 2006-07-02 21:15 UTC (permalink / raw)
To: Arjan van de Ven; +Cc: Udo van den Heuvel, linux-kernel
>> > Hi,
>> >
>> > something really bad happened (the processor jumped into hyperspace);
>> > however it looks like automatic symbol resolving isn't working;
>> > could you check if CONFIG_KALLSYMS is enabled in your kernel config?
>> > With that enabled, debugability tends to go up bigtime since at least
>> > the backtrace becomes human readable...
>>
>> I have:
>>
>> CONFIG_KALLSYMS=y
>
>Hoi,
>
>hmmmmm then something really bad happened, so bad that even the
>backtrace is corrupted ;(
How about adding this one?
CONFIG_FRAME_POINTER=y
Compiling things without frame pointer on
userspace (yes, userspace) makes debugging impossible, I wonder how the
kernel can do it without FPs.
And if you got time on your hands
CONFIG_UNWIND_INFO=y
Jan Engelhardt
--
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Oops / BUG? (2.6.17.2 on VIA Epia CL6000)
@ 2006-07-02 19:51 Chuck Ebbert
0 siblings, 0 replies; 7+ messages in thread
From: Chuck Ebbert @ 2006-07-02 19:51 UTC (permalink / raw)
To: Udo van den Heuvel; +Cc: linux-kernel
In-Reply-To: <44A7AADB.8040106@xs4all.nl>
On Sun, 02 Jul 2006 13:15:39 +0200, Udo van den Heuvel wrote:
> On my otherwise stable Via EPIA CL6000 I experienced an OOPS.
> Hardware should be OK. I was unable to reproduce the event, so far.
> In what part of the kernel did things go wrong?
Your kernel stack has been overwritten with seemingly-random data.
This is impossible to diagnose -- some module possibly scribbled
over the stack.
> Process named (pid: 1431, threadinfo=dd070000 task=ddf61a90)
> EIP: [<52786fdd>] 0x52786fdd SS:ESP 0068:dd071f38
Threadinfo is at dd070000 so end-of-stack is at dd071ff8
dd071ff8 - dd071f38 = 192 (decimal) so there are 192 bytes on the
kernel stack. We can see 192 bytes and there is no sensible regs
information at the end, just random junk.
> What can I do to help fix the bug? (if it is indeed a bug)
Where did these modules come from?
ipt_TARPIT
vt1211
--
Chuck
"You can't read a newspaper if you can't read." --George W. Bush
^ permalink raw reply [flat|nested] 7+ messages in thread
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2006-07-02 11:15 Oops / BUG? (2.6.17.2 on VIA Epia CL6000) Udo van den Heuvel
2006-07-02 11:21 ` Arjan van de Ven
2006-07-02 11:24 ` Udo van den Heuvel
2006-07-02 11:38 ` Arjan van de Ven
2006-07-02 11:46 ` Udo van den Heuvel
2006-07-02 21:15 ` Jan Engelhardt
2006-07-02 19:51 Chuck Ebbert
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