On Thu, May 06, 2004 at 10:40:41PM +1000, Ramon Buckland said
> Hi,
> 
> sometime in the past month, I performed an upgrade
> to my unstable debian. (apt-get update/upgrade) and possibly (i can't
> remember, a dist-upgrade.
> 
> I'm now getting a seg fault on a few commands., but repeatable is
> when attempting to run df.
> 
> Can anyone suggest a way I can resolve the issue? My ultimate aim is to
> fix without a reinstall the box. (but if needed, I guess I will).
> 
> Probably the one thing that might be the issue is I am running
> 2.5.72 kernel.
> 
> Here's my seg fault (not that it will help much, but show my pain I
> guess :-)
> 
> sebago:~# df
> Filesystem           1K-blocks      Used Available Use% Mounted on
> <1>Unable to handle kernel NULL pointer dereference at virtual address
> 00000018
>  printing eip:
>  00000018
>  *pde = 00000000
>  Oops: 0000 [#14]
>  CPU:    0
>  EIP:    0060:[<00000018>]    Not tainted
>  EFLAGS: 00010246
>  eax: 0000010c   ebx: 08051228   ecx: 00000054   edx: 0000007b
>  esi: bffff420   edi: 40156510   ebp: c438a000   esp: c438bfc0
>  ds: 007b   es: 007b   ss: 0068
>  Process df (pid: 9407, threadinfo=c438a000 task=c326ace0)
>  Stack: c010904f 08051228 00000054 bffff420 bffff420 40156510 bffff408
> 0000010c
>         0000007b 0000007b 0000010c 400f0334 00000073 00000246 bffff3b0
> 0000007b
>         Call Trace: [<c010904f>]
>         Code:  Bad EIP value.
>          Segmentation fault

Just for the record, note that this is what's called a "kernel oops",
which is the kernel version of a segfault.  No user space process should
be able to cause this to happen, and it usually means a kernel bug or
bad physical memory.  In this case it looks like it was the former,
which is good and far cheaper to fix :)

-- 
Rob Weir <[EMAIL PROTECTED]> | [EMAIL PROTECTED]  |  Do I look like I want a CC?
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