2003-07-21 15:52:54

by Ramón Rey Vicente

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Subject: [2.6.0-test1] Unable to handle kernel NULL pointer dereference at virtual address 00000324

Hello.

With test1 and the bitkeeper changesets until yesterday, I obtain this

Unable to handle kernel NULL pointer dereference at virtual address
00000324
printing eip:
c01605a9
*pde = 00000000
Oops: 0000 [#1]
CPU: 0
EIP: 0060:[<c01605a9>] Not tainted
EFLAGS: 00010206
EIP is at iput+0x9/0x80
eax: 00000000 ebx: 00000200 ecx: caab2664 edx: caab2664
esi: 00000200 edi: c13e4000 ebp: 00000061 esp: c13e5e88
ds: 007b es: 007b ss: 0068
Process kswapd0 (pid: 8, threadinfo=c13e4000 task=c13eac60)
Stack: caab2640 c015ddf3 00000200 00000080 c13e4000 00000041 cfffeba0
c015e273
00000080 c0138968 00000080 000000d0 0000d4c8 01e04b6c 00000000
00000241
00000000 0000035a c027826c fffffffd 00000001 c0139abe 0000035a
000000d0
Call Trace:
[<c015ddf3>] prune_dcache+0x153/0x1a0
[<c015e273>] shrink_dcache_memory+0x33/0x40
[<c0138968>] shrink_slab+0x108/0x160
[<c0139abe>] balance_pgdat+0x15e/0x180
[<c0139be6>] kswapd+0x106/0x120
[<c01180a0>] autoremove_wake_function+0x0/0x40
[<c0108d96>] ret_from_fork+0x6/0x20
[<c01180a0>] autoremove_wake_function+0x0/0x40
[<c0139ae0>] kswapd+0x0/0x120
[<c0106fe5>] kernel_thread_helper+0x5/0x20

Code: 83 bb 24 01 00 00 20 8b 83 80 00 00 00 8b 40 24 74 4b 85 c0
--
/================================================\
| Ram?n Rey Vicente <ramon.rey at hispalinux.es> |
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| Jabber ID <rreylinux at jabber.org> |
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| Public GPG Key http://pgp.escomposlinux.org |
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| GLiSa http://glisa.hispalinux.es |
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2003-07-21 22:16:27

by Ronald Jerome

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Subject: Re: [2.6.0-test1] Unable to handle kernel NULL pointer dereference at virtual address 00000324

That is the exact same Oops I get. I wasunable to
catpure or print it because the kernel locks up.

How were you are ble catch the Oops message if yoru
system froze?


--- Ram?n Rey Vicente ???? <[email protected]>
wrote:
> Hello.
>
> With test1 and the bitkeeper changesets until
> yesterday, I obtain this
>
> Unable to handle kernel NULL pointer dereference at
> virtual address
> 00000324
> printing eip:
> c01605a9
> *pde = 00000000
> Oops: 0000 [#1]
> CPU: 0
> EIP: 0060:[<c01605a9>] Not tainted
> EFLAGS: 00010206
> EIP is at iput+0x9/0x80
> eax: 00000000 ebx: 00000200 ecx: caab2664 edx:
> caab2664
> esi: 00000200 edi: c13e4000 ebp: 00000061 esp:
> c13e5e88
> ds: 007b es: 007b ss: 0068
> Process kswapd0 (pid: 8, threadinfo=c13e4000
> task=c13eac60)
> Stack: caab2640 c015ddf3 00000200 00000080 c13e4000
> 00000041 cfffeba0
> c015e273
> 00000080 c0138968 00000080 000000d0 0000d4c8
> 01e04b6c 00000000
> 00000241
> 00000000 0000035a c027826c fffffffd 00000001
> c0139abe 0000035a
> 000000d0
> Call Trace:
> [<c015ddf3>] prune_dcache+0x153/0x1a0
> [<c015e273>] shrink_dcache_memory+0x33/0x40
> [<c0138968>] shrink_slab+0x108/0x160
> [<c0139abe>] balance_pgdat+0x15e/0x180
> [<c0139be6>] kswapd+0x106/0x120
> [<c01180a0>] autoremove_wake_function+0x0/0x40
> [<c0108d96>] ret_from_fork+0x6/0x20
> [<c01180a0>] autoremove_wake_function+0x0/0x40
> [<c0139ae0>] kswapd+0x0/0x120
> [<c0106fe5>] kernel_thread_helper+0x5/0x20
>
> Code: 83 bb 24 01 00 00 20 8b 83 80 00 00 00 8b 40
> 24 74 4b 85 c0
> --
> /================================================\
> | Ram?n Rey Vicente <ramon.rey at hispalinux.es> |
> | |
> | Jabber ID <rreylinux at jabber.org> |
> | |
> | Public GPG Key http://pgp.escomposlinux.org |
> | |
> | GLiSa http://glisa.hispalinux.es |
> \================================================/
>

> ATTACHMENT part 2 application/pgp-signature
name=signature.asc



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2003-07-21 23:44:12

by Ramón Rey Vicente

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Subject: Re: [2.6.0-test1] Unable to handle kernel NULL pointer dereference at virtual address 00000324

El mar, 22-07-2003 a las 00:31, Ronald Jerome escribi?:
> That is the exact same Oops I get. I wasunable to
> catpure or print it because the kernel locks up.
>
> How were you are ble catch the Oops message if yoru
> system froze?

My system work well :) after the Oops I got, not frozen, but with the
kernel option

CONFIG_DEBUG_KERNEL=y
CONFIG_MAGIC_SYSRQ=y

you can try to recover information about crashes
--
/================================================\
| Ram?n Rey Vicente <ramon.rey at hispalinux.es> |
| |
| Jabber ID <rreylinux at jabber.org> |
| |
| Public GPG Key http://pgp.escomposlinux.org |
| |
| GLiSa http://glisa.hispalinux.es |
\================================================/


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