linux-kernel - Re: [PATCH v2 1/2] trace_uprobe: Use %lx to display offset

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Date:   Wed, 11 Apr 2018 11:42:51 +0530
From:   Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>
To:     rostedt@...dmis.org
Cc:     linux-kernel@...r.kernel.org, keescook@...omium.org,
        wangnan0@...wei.com, mingo@...hat.com, srikar@...ux.vnet.ibm.com,
        oleg@...hat.com, mhiramat@...nel.org, namhyung@...nel.org,
        Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>
Subject: Re: [PATCH v2 1/2] trace_uprobe: Use %lx to display offset

Hi Steve,

Can you please pull these patches.

Thanks,
Ravi

On 03/15/2018 01:57 PM, Ravi Bangoria wrote:
> tu->offset is unsigned long, not a pointer, thus %lx should
> be used to print it, not the %px.
>
> Fixes: 0e4d819d0893 ("trace_uprobe: Display correct offset in uprobe_events")
> Suggested-by: Kees Cook <keescook@...omium.org>
> Signed-off-by: Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>
> ---
> v2 changelog:
>  - Keep prefixed 0s as is.
>
>  kernel/trace/trace_uprobe.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
> index 2014f4351ae0..0298bd15be83 100644
> --- a/kernel/trace/trace_uprobe.c
> +++ b/kernel/trace/trace_uprobe.c
> @@ -608,7 +608,7 @@ static int probes_seq_show(struct seq_file *m, void *v)
>
>  	/* Don't print "0x  (null)" when offset is 0 */
>  	if (tu->offset) {
> -		seq_printf(m, "0x%px", (void *)tu->offset);
> +		seq_printf(m, "0x%0*lx", (int)(sizeof(void *) * 2), tu->offset);
>  	} else {
>  		switch (sizeof(void *)) {
>  		case 4: