linux-kernel - Re: [PATCH] coresight: use %px to print pcsr instead of %p

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Wed, 7 Mar 2018 14:38:26 -0700
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Leo Yan <leo.yan@...aro.org>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] coresight: use %px to print pcsr instead of %p

On 2 March 2018 at 21:23, Leo Yan <leo.yan@...aro.org> wrote:
> Commit ad67b74d2469 ("printk: hash addresses printed with %p") lets
> printk specifier %p to hash all addresses before printing, this was
> resulting in the high 32 bits of pcsr can only output zeros.  So
> module cannot completely print pc value and it's pointless for debugging
> purpose.
>
> This patch fixes this by using %px to print pcsr instead.
>
> Cc: Mathieu Poirier <mathieu.poirier@...aro.org>
> Signed-off-by: Leo Yan <leo.yan@...aro.org>
> ---
>  drivers/hwtracing/coresight/coresight-cpu-debug.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/hwtracing/coresight/coresight-cpu-debug.c b/drivers/hwtracing/coresight/coresight-cpu-debug.c
> index 6ea62c6..9cdb3fb 100644
> --- a/drivers/hwtracing/coresight/coresight-cpu-debug.c
> +++ b/drivers/hwtracing/coresight/coresight-cpu-debug.c
> @@ -315,7 +315,7 @@ static void debug_dump_regs(struct debug_drvdata *drvdata)
>         }
>
>         pc = debug_adjust_pc(drvdata);
> -       dev_emerg(dev, " EDPCSR:  [<%p>] %pS\n", (void *)pc, (void *)pc);
> +       dev_emerg(dev, " EDPCSR:  [<%px>] %pS\n", (void *)pc, (void *)pc);
>
>         if (drvdata->edcidsr_present)
>                 dev_emerg(dev, " EDCIDSR: %08x\n", drvdata->edcidsr);

Applied - thanks
Mathieu

> --
> 2.7.4
>