linux-kernel - Re: Re: Re: kprobing "hash_64.constprop.26" crashes the system, recursion through get

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Date:	Fri, 01 Mar 2013 20:02:21 +0900
From:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
To:	Timo Juhani Lindfors <timo.lindfors@....fi>
Cc:	ananth@...ibm.com, linux-kernel@...r.kernel.org,
	Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
	"David S. Miller" <davem@...emloft.net>,
	"yrl.pp-manager.tt@...achi.com" <yrl.pp-manager.tt@...achi.com>
Subject: Re: Re: Re: kprobing "hash_64.constprop.26" crashes the system,
 recursion through get_kprobe?

(2013/03/01 19:54), Masami Hiramatsu wrote:
> Actually, __kprobes is used much more than we need, because that
> is safer (and also, that is used just for marking functions
> related to kprobes).
> 
> Only what functions we need to mark __kprobes is the functions
> called from do_int3, and optimized_callback, until processing
> recursive call (which is done by kprobe_running() and
> reenter_kprobe()).

Ah, I forgot to mention that interrupt/exception/NMI related code too...

Thanks,

-- 
Masami HIRAMATSU
IT Management Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@...achi.com


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