linux-kernel - Re: [PATCH v2 02/13] uprobes: allow ignoring of probe hits

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Date:	Sat, 19 Oct 2013 19:02:14 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	David Long <dave.long@...aro.org>
Cc:	linux-arm-kernel@...ts.infradead.org, Rabin Vincent <rabin@....in>,
	"Jon Medhurst (Tixy)" <tixy@...aro.org>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 02/13] uprobes: allow ignoring of probe hits

On 10/15, David Long wrote:
>
> @@ -1732,9 +1732,6 @@ static void handle_swbp(struct pt_regs *regs)
>  		return;
>  	}
>  
> -	/* change it in advance for ->handler() and restart */
> -	instruction_pointer_set(regs, bp_vaddr);
> -

Well, this looks obviously wrong. This SET_IP() has the comment ;)

Note also that with this breaks __skip_sstep() on x86.

Oleg.

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