DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references;
        b=XiurbGoodIhMfduAcIaMHb97vvUzjokgCxF/w3MdtK2abFw7FM8lKwCA6Y51C+9M+yPIkkUKTpx38uip7PX59fTxuzTmEU6lWWMw2tTS3llS2AKhhLpeDVJBipUElhzWwuQamgHrYWYeXbc0qWSOuMBdFAJauFGhq5CYNTsS4lE=
Message-ID: <863e9df20801291008x40208609j15749fc6e39fbe47@mail.gmail.com>
Date: Tue, 29 Jan 2008 23:38:31 +0530
From: "Abhishek Sagar" <sagar.abhishek@gmail.com>
To: "Masami Hiramatsu" <mhiramat@redhat.com>
Subject: Re: [PATCH 0/3][RFC] x86: Catch stray non-kprobe breakpoints
Cc: ananth@in.ibm.com, LKML <linux-kernel@vger.kernel.org>,
       jkenisto@us.ibm.com, "Ingo Molnar" <mingo@elte.hu>
In-Reply-To: <479F4291.1060106@redhat.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
References: <479C4A28.3020705@gmail.com> <20080129060203.GA15576@in.ibm.com>
	 <863e9df20801290240t6c724cb9x145fd6b1ca4f3c78@mail.gmail.com>
	 <479F4291.1060106@redhat.com>
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 961
Lines: 31

On 1/29/08, Masami Hiramatsu <mhiramat@redhat.com> wrote:
> In that case, why don't you just reduce the priority of kprobe_exceptions_nb?
> Then, the execution path becomes very simple.

Ananth mentioned that the kprobe notifier has to be the first to run.
It still wouldnt allow us to notice breakpoints on places like do_int3
etc.

> I also like to use a debugger for debugging kprobes. that will help us.

Hmm...It would increase the code-path leading upto kprobe_handler.
That's more territory to be guarded from kprobes.

> Best Regards,
>
> --
> Masami Hiramatsu
>
> Software Engineer
> Hitachi Computer Products (America) Inc.
> Software Solutions Division
>
> e-mail: mhiramat@redhat.com
--
Thanks,
Abhishek
--
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/