Kernel panic/exception

[Yedidyah Bar-David]

On Thu, Apr 23, 2009 at 01:59:19PM +0300, Noam Rathaus wrote:
> Hi,
> 
> I am seeing these in the logs and I can't find a documentation to what
> might have been causing it:
> Apr 23 13:57:47 sp kernel:  <1>Unable to handle kernel paging request
> at virtual address 0804c3ac
> Apr 23 13:57:47 sp kernel:  printing eip:
> Apr 23 13:57:47 sp kernel: c0152dc0
> Apr 23 13:57:47 sp kernel: *pde = 089f6067
> Apr 23 13:57:47 sp kernel: *pte = 00000000
> Apr 23 13:57:47 sp kernel: Oops: 0000
> Apr 23 13:57:47 sp kernel: CPU:    0
> Apr 23 13:57:47 sp kernel: EIP:    0010:[<c0152dc0>]    Not tainted
> Apr 23 13:57:47 sp kernel: EFLAGS: 00010202
> Apr 23 13:57:47 sp kernel: eax: d201fadc   ebx: d201fac0   ecx:
> d7f86000   edx: 0804c3a4
> Apr 23 13:57:47 sp kernel: esi: d7f86000   edi: 00000000   ebp:
> 00000000   esp: c83adf04
> Apr 23 13:57:47 sp kernel: ds: 0018   es: 0018   ss: 0018
> Apr 23 13:57:47 sp kernel: Process pidof (pid: 7080, stackpage=c83ad000)
> Apr 23 13:57:47 sp kernel: Stack: 522ba678 00000000 ffffffff 0000000c
> 00000000 00000000 c02ba678 00000073
> Apr 23 13:57:47 sp kernel:        c4b75580 c4bb7c80 c02ba678 c02ba828
> 00000000 000001f0 c8443b00 00000000
> Apr 23 13:57:47 sp kernel:        00000000 00000c00 c0150e04 d7f86000
> dae26000 00000000 00000000 d7f86000
> Apr 23 13:57:47 sp kernel: Call Trace:    [<c0150e04>] [<c013389c>] [<c0106cd3>]
> Apr 23 13:57:47 sp kernel:
> Apr 23 13:57:47 sp kernel: Code: 8b 42 08 8b 4a 04 8b 52 0c 29 c8 01
> c5 85 d2 75 ef 8b 86 ec

To get any idea, you need to translate these addresses to function
names. You do this with ksymoops. Read the manpage or google - most
basic use (and which should work if you have the necessary files
installed) is to put the message in a file (e.g. file1) and run
ksymoops file1
-- 
Didi