Re: 2.5.63 accesses below %esp (was: Re: ntfs OOPS (2.5.63))

Jonathan Lundell (linux@lundell-bros.com)
Thu, 13 Mar 2003 17:08:26 -0800


At 3:24pm -0800 3/13/03, Linus Torvalds wrote:
>On Thu, 13 Mar 2003, Horst von Brand wrote:
>>
>> No need. Just dump some bytes before EIP raw, plus raw bytes + decoded
>> after EIP. Could be of some help.
>
>Alpha does this. Of course, there you don't have any of the partial
>instruction issues.

If you've got a symbol some reasonable distance before EIP, you could
decode from there. I wrote a little code that does that (using
kallsyms) very crudely in the stack trace in order to give the reader
a hint about stack frames. Go to the prior symbol, which is usually
an entry point, and find the %esp arithmetic. Works pretty well for
figuring out the real call chain.

-- 
/Jonathan Lundell.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/