linux-kernel - Re: [PATCH V2] riscv: Convert uses of REG

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Date:   Sun, 29 Jul 2018 09:31:52 -0700
From:   Joe Perches <joe@...ches.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Petr Mladek <pmladek@...e.com>
Cc:     Oleg Nesterov <oleg@...hat.com>,
        Palmer Dabbelt <palmer@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        linux-riscv@...ts.infradead.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2] riscv: Convert uses of REG_FMT to %p

On Sun, 2018-07-29 at 17:21 +0300, Andy Shevchenko wrote:
> On Sat, Jul 28, 2018 at 7:39 PM, Joe Perches <joe@...ches.com> wrote:
> > Use %p pointer output instead of REG_FMT and cast the unsigned longs to
> > (void *) to avoid exposing kernel addresses.
> > 
> > Miscellanea:
> > 
> > o Convert pr_cont to printk(KERN_DEFAULT as these uses are
> >   new logging lines and not previous line continuations
> > o Remove the now unused REG_FMT defines
> > +       pr_alert("Unable to handle kernel %s at virtual address %p\n",
> > +                (addr < PAGE_SIZE) ? "NULL pointer dereference" :
> > +                "paging request", (void *)addr);
> 
> Hmm... This is what printf() should take care of.

Why is that so here?

Here this is just a description of the address.
It's not actually dereferencing the address.

> Petr, what is the status of your series to unify this kind of
> addresses to be printed?