linux-kernel - Re: [PATCH 6/8] kprobes/arm64: Fix %p uses in error messages

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Date:   Thu, 25 Jan 2018 16:42:31 +0000
From:   Will Deacon <will.deacon@....com>
To:     Masami Hiramatsu <mhiramat@...nel.org>, catalin.marinas@....com
Cc:     linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        Ingo Molnar <mingo@...hat.com>,
        "H . Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Ananth N Mavinakayanahalli <ananth@...ibm.com>,
        Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jon Medhurst <tixy@...aro.org>, Arnd Bergmann <arnd@...db.de>,
        David Howells <dhowells@...hat.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        "Tobin C . Harding" <me@...in.cc>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 6/8] kprobes/arm64: Fix %p uses in error messages

On Thu, Jan 25, 2018 at 02:29:32PM +0900, Masami Hiramatsu wrote:
> Fix %p uses in error messages by removing it because
> those are redundant or meaningless.
> 
> Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>
> ---
>  arch/arm64/kernel/probes/kprobes.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Acked-by: Will Deacon <will.deacon@....com>

I guess Catalin can just pick this one up via arm64.

Will

> diff --git a/arch/arm64/kernel/probes/kprobes.c b/arch/arm64/kernel/probes/kprobes.c
> index d849d9804011..34f78d07a068 100644
> --- a/arch/arm64/kernel/probes/kprobes.c
> +++ b/arch/arm64/kernel/probes/kprobes.c
> @@ -275,7 +275,7 @@ static int __kprobes reenter_kprobe(struct kprobe *p,
>  		break;
>  	case KPROBE_HIT_SS:
>  	case KPROBE_REENTER:
> -		pr_warn("Unrecoverable kprobe detected at %p.\n", p->addr);
> +		pr_warn("Unrecoverable kprobe detected.\n");
>  		dump_kprobe(p);
>  		BUG();
>  		break;
> @@ -521,7 +521,7 @@ int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
>  		    (struct pt_regs *)kcb->jprobe_saved_regs.sp;
>  		pr_err("current sp %lx does not match saved sp %lx\n",
>  		       orig_sp, stack_addr);
> -		pr_err("Saved registers for jprobe %p\n", jp);
> +		pr_err("Saved registers for jprobe\n");
>  		__show_regs(saved_regs);
>  		pr_err("Current registers\n");
>  		__show_regs(regs);
>