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Date: Mon, 11 Dec 2006 17:01:00 -0800
From: Julian Elischer <julian@elischer.org>
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Cc: FreeBSD Current <current@freebsd.org>, Kris Kennaway <kris@obsecurity.org>
Subject: Re: kdb_backtrace 'feature'?
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Julian Elischer wrote:
> Kris Kennaway wrote:
>> On Mon, Dec 11, 2006 at 03:09:16PM -0800, Julian Elischer wrote:
>>> I often have the following:
>>>
>>>
>>> code x() does some bad thing 'A'.. it's a known thing and you can tell
>>> where it was done from (x()) but x() tell at the time that it is bad.
>>>
>>> at some later time, you discover 'A' is bad but now you don't know who
>>> was teh bad caller of x()
>>>
>>>
>>> The solution I'm looking for:
>>>
>>> when x() is called it calls kdb_backtrace, but has teh backtrace 
>>> written to a static 16K buffer instead of being put out the normal way.
>>>
>>> when A is found to be wrong, we can see who the last caller of x() was
>>> and how it was called.
>>>
>>>
>>> I am looking at it now.. but if anyone has any thoughts let me know...
>>
>> See <sys/stack.h>
> 
> interesting... is there any documentation on how to use this and what 
> its limitations are?
> 
> man -k stack doesn't provide anything..  grrrrr.

cute.. after reading code..  interesting but it doesn't
save any arguments..
but definitly interesting.. thanks for pointing it out. I missed that 
being added..


> 
> 
>>
>> Kris
> 
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