question about oops and panic

Stratos Psomadakis s.psomadakis at gmail.com
Mon Aug 29 07:01:50 EDT 2011


On 08/28/2011 08:19 PM, Parmenides wrote:
> Hi,
>
> 1. I think oops and panic are both some way to deal with errors occurs
> in kernel space. Is there any relationship between them?
afaik, the difference is that the panic is non-recoverable, and occurs
only in certain very critical situations
>
> 2. I make a NULL pointer reference deliberately in a kernel module and
> get an oops like:
>
> ... ... ...
>
> Aug 29 00:58:45 lfs kernel: Call Trace:
> Aug 29 00:58:45 lfs kernel:  [<c100112d>] ? do_one_initcall+0x44/0x120
> Aug 29 00:58:45 lfs kernel:  [<c10517ce>] ? sys_init_module+0xa7/0x1d9
> Aug 29 00:58:45 lfs kernel:  [<c138d49d>] ? syscall_call+0x7/0xb
>
> ... ... ...
>
> I wonder what is the meaning of the tow numbers after a function name.
the first one is the offset within the function that the error occurred,
and the second one I think it is the function size (you'll usually need
only the first one for debugging)

-- 
Stratos Psomadakis
<s.psomadakis at gmail.com>




More information about the Kernelnewbies mailing list