Unable to handle kernel NULL pointer dereference at virtual address - 2.4.5

Unable to handle kernel NULL pointer dereference at virtual address - 2.4.5

[Rafael Martinez]

Hello

I have got a error in my syslog about a Null pointer in the kernel:

Kernel 2.4.5
glibc 2.2.12
gcc version 2.96 20000731 (Red Hat Linux 7.0)

Modell: ISP2150 
Motherboard: L440GX+ DP 
CPU: 2 x Intel Pentium III (Coppermine) 850 MHz L2 cache: 256K / Bus: 100 MHz 
RAM: 256 MB 
SCSI controller: Adaptec AIC-7896/7 Ultra2

*******************************************************************
Error log
*******************************************************************
Unable to handle kernel NULL pointer dereference at virtual address
00000015
 printing eip:
c014db72
*pde = 00000000
Oops: 0002
CPU:    1
EIP:    0010:[<c014db72>]
EFLAGS: 00010206
eax: 00000005   ebx: cc870440   ecx: 00000020   edx: c1c12000
esi: c0287140   edi: 0000000c   ebp: c0287490   esp: c63e7e6c
ds: 0018   es: 0018   ss: 0018
Process top (pid: 21710, stackpage=c63e7000)
Stack: c0149366 cc870440 c1c12000 00000000 c014ee0c cc870440 c1c12000
0000000c 
       c023b269 c014f096 c144f000 c1c12000 0000000c c1c12000 ffffffea
cf6190e0 
       c01470d6 c1445060 00000007 c63e6000 fffffff4 cf6190e0 cc80b260
c013e403 
Call Trace: [<c0149366>] [<c014ee0c>] [<c014f096>] [<c01470d6>]
[<c013e403>] [<c013ec85>] [<c013f5a2>] 
       [<c0132f26>] [<c013e08b>] [<c013322a>] [<c0106df7>] [<c010002b>] 

Code: f0 ff 48 10 8b 42 24 83 48 14 08 52 e8 dd fe ff ff 5a c3 8d 
Unable to handle kernel NULL pointer dereference at virtual address
00000015
 printing eip:
c014db72
*pde = 00000000
Oops: 0002
CPU:    0
EIP:    0010:[<c014db72>]
EFLAGS: 00010206
eax: 00000005   ebx: cfbf1080   ecx: 00000020   edx: ca546000
esi: c0287140   edi: 0000000c   ebp: c0287490   esp: cb817e6c
ds: 0018   es: 0018   ss: 0018
Process top (pid: 25765, stackpage=cb817000)
Stack: c0149366 cfbf1080 ca546000 00000000 c014ee0c cfbf1080 ca546000
0000000c 
       c023b269 c014f096 c144f000 ca546000 0000000c ca546000 ffffffea
cfbf1260 
       c01470d6 c1445060 00000007 cb816000 fffffff4 cfbf1260 cd9075a0
c013e403 
Call Trace: [<c0149366>] [<c014ee0c>] [<c014f096>] [<c01470d6>]
[<c013e403>] [<c013ec85>] [<c013f5a2>] 
       [<c0132f26>] [<c013e08b>] [<c013322a>] [<c0106df7>] [<c010002b>] 

Code: f0 ff 48 10 8b 42 24 83 48 14 08 52 e8 dd fe ff ff 5a c3 8d
*******************************************************************

Sincerely
Rafael Martinez

Re: Unable to handle kernel NULL pointer dereference at virtual address - 2.4.5

[Brian Gerst]

Rafael Martinez wrote:
> 
> Hello
> 
> I have got a error in my syslog about a Null pointer in the kernel:
> 
> Kernel 2.4.5
> glibc 2.2.12
> gcc version 2.96 20000731 (Red Hat Linux 7.0)
> 
> Modell: ISP2150
> Motherboard: L440GX+ DP
> CPU: 2 x Intel Pentium III (Coppermine) 850 MHz L2 cache: 256K / Bus: 100 MHz
> RAM: 256 MB
> SCSI controller: Adaptec AIC-7896/7 Ultra2

Please run oops messages through ksymoops before posting them here.  The
message is meaningless without knowing what symbols are mapped to what
address.  See linux/Documentation/oops-tracing.txt.

--

				Brian Gerst

Re: Unable to handle kernel NULL pointer dereference at virtual address - 2.4.5

[Chris Leger]

Hi,

I have the same problem, only mine occurs early in the boot process
(right after a message saying something like "trying to mount old
root..."; or maybe s/mount/unmount)so I don't have a log.  I have a
similar system: dual PIIIs w/ Adaptec AIC-7xxx controller, an HP Kayak. 
I saw some earlier messages about AIC-7xxx problems w/ 2.4.5, so I tried
using aic7xxx_old and also tried a patch someone mentioned.  I have yet
to be able to bring up my machine with 2.4.5 under any combination of
aic7xxx drivers, so maybe it's not the driver after all.

Any ideas?  I built the kernel w/ gcc 2.91.66 (kgcc).

Thanks,

Chris Leger

Rafael Martinez writes:
> Hello
>
>     I have got a error in my syslog about a Null pointer in the kernel:
>
>     Kernel 2.4.5
>     glibc 2.2.12
>     gcc version 2.96 20000731 (Red Hat Linux 7.0)
>
>     Modell: ISP2150 
>     Motherboard: L440GX+ DP 
>     CPU: 2 x Intel Pentium III (Coppermine) 850 MHz L2 cache: 256K / Bus: 100 MHz 
>     RAM: 256 MB 
>     SCSI controller: Adaptec AIC-7896/7 Ultra2
>
>Unable to handle kernel NULL pointer dereference at virtual address
>     00000015
>      printing eip:
>     c014db72
>     *pde = 00000000
>     Oops: 0002
>     CPU:    1
>     EIP:    0010:[<c014db72>]
>     EFLAGS: 000

-- 
[ Chris Leger  ::  cleger@robotics.jpl.nasa.gov   (818)393-4462 ]

You can come up with a hundred reasons why a thing can't be done, 
and you have to eat them all when someone else does it.

Re: Unable to handle kernel NULL pointer dereference at virtual address - 2.4.5

[D. Stimits]

Chris Leger wrote:
> 
> Hi,
> 
> I have the same problem, only mine occurs early in the boot process
> (right after a message saying something like "trying to mount old
> root..."; or maybe s/mount/unmount)so I don't have a log.  I have a
> similar system: dual PIIIs w/ Adaptec AIC-7xxx controller, an HP Kayak.
> I saw some earlier messages about AIC-7xxx problems w/ 2.4.5, so I tried
> using aic7xxx_old and also tried a patch someone mentioned.  I have yet
> to be able to bring up my machine with 2.4.5 under any combination of
> aic7xxx drivers, so maybe it's not the driver after all.
> 
> Any ideas?  I built the kernel w/ gcc 2.91.66 (kgcc).

I have no problems running RH 7.l with the 2.4.5 ac series, provided I
have the patch to fs/block_dev.c (which apparently is in at around ac3;
also in 2.4.6-pre2 I think). When using an XFS filesystem patch, I also
have to use their "rebuild firmware" option, which I don't think is part
of ac or regular kernels. I use kgcc to compile all, and am running dual
pIII (I run without APIC because of the defective i840 chipset). All of
this is using the stock aic7xxx module or compiled in directly.

D. Stimits, stimits@idcomm.com

> 
> Thanks,
> 
> Chris Leger
> 
> Rafael Martinez writes:
> > Hello
> >
> >     I have got a error in my syslog about a Null pointer in the kernel:
> >
> >     Kernel 2.4.5
> >     glibc 2.2.12
> >     gcc version 2.96 20000731 (Red Hat Linux 7.0)
> >
> >     Modell: ISP2150
> >     Motherboard: L440GX+ DP
> >     CPU: 2 x Intel Pentium III (Coppermine) 850 MHz L2 cache: 256K / Bus: 100 MHz
> >     RAM: 256 MB
> >     SCSI controller: Adaptec AIC-7896/7 Ultra2
> >
> >Unable to handle kernel NULL pointer dereference at virtual address
> >     00000015
> >      printing eip:
> >     c014db72
> >     *pde = 00000000
> >     Oops: 0002
> >     CPU:    1
> >     EIP:    0010:[<c014db72>]
> >     EFLAGS: 000
> 
> --
> [ Chris Leger  ::  cleger@robotics.jpl.nasa.gov   (818)393-4462 ]
> 
> You can come up with a hundred reasons why a thing can't be done,
> and you have to eat them all when someone else does it.
> -
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