linux-kernel - Re: [PATCH -tip v2 1/5] [BUGFIX] kprobes: Fix selftest to clear flags field for reusing probes

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Date:	Wed, 19 May 2010 10:32:46 +0530
From:	Ananth N Mavinakayanahalli <ananth@...ibm.com>
To:	Masami Hiramatsu <mhiramat@...hat.com>
Cc:	Ingo Molnar <mingo@...e.hu>, lkml <linux-kernel@...r.kernel.org>,
	systemtap <systemtap@...rces.redhat.com>,
	DLE <dle-develop@...ts.sourceforge.net>,
	Jim Keniston <jkenisto@...ibm.com>,
	Jason Baron <jbaron@...hat.com>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Subject: Re: [PATCH -tip v2 1/5] [BUGFIX] kprobes: Fix selftest to clear
	flags field for reusing probes

On Tue, May 18, 2010 at 04:12:51PM -0400, Masami Hiramatsu wrote:
 
>  kernel/test_kprobes.c |   12 +++++++++---
>  1 files changed, 9 insertions(+), 3 deletions(-)
> 
> diff --git a/kernel/test_kprobes.c b/kernel/test_kprobes.c
> index 4f10451..ede20f4 100644
> --- a/kernel/test_kprobes.c
> +++ b/kernel/test_kprobes.c
> @@ -115,7 +115,9 @@ static int test_kprobes(void)
>  	int ret;
>  	struct kprobe *kps[2] = {&kp, &kp2};
> 
> -	kp.addr = 0; /* addr should be cleard for reusing kprobe. */
> +	/* addr and flags should be cleard for reusing kprobe. */
> +	kp.addr = 0;

kp.addr = NULL;

> +	kp.flags = 0;
>  	ret = register_kprobes(kps, 2);
>  	if (ret < 0) {
>  		printk(KERN_ERR "Kprobe smoke test failed: "
> @@ -210,7 +212,9 @@ static int test_jprobes(void)
>  	int ret;
>  	struct jprobe *jps[2] = {&jp, &jp2};
> 
> -	jp.kp.addr = 0; /* addr should be cleard for reusing kprobe. */
> +	/* addr and flags should be cleard for reusing kprobe. */
> +	jp.kp.addr = 0;

Same here...

> +	jp.kp.flags = 0;
>  	ret = register_jprobes(jps, 2);
>  	if (ret < 0) {
>  		printk(KERN_ERR "Kprobe smoke test failed: "
> @@ -323,7 +327,9 @@ static int test_kretprobes(void)
>  	int ret;
>  	struct kretprobe *rps[2] = {&rp, &rp2};
> 
> -	rp.kp.addr = 0; /* addr should be cleard for reusing kprobe. */
> +	/* addr and flags should be cleard for reusing kprobe. */
> +	rp.kp.addr = 0;

Here too.

Ananth
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