From: Joe Perches <joe@perches.com>
To: Ryan Mallon <rmallon@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Dan Rosenberg <dan.j.rosenberg@gmail.com>,
Rob Landley <rob@landley.net>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] vsprintf/sysctl: Bugfix, neaten and document %pK usages
Date: Thu, 10 Oct 2013 22:38:30 -0700 [thread overview]
Message-ID: <1381469910.14017.45.camel@joe-AO722> (raw)
In-Reply-To: <52578D37.2000004@gmail.com>
On Fri, 2013-10-11 at 16:31 +1100, Ryan Mallon wrote:
> On 11/10/13 16:25, Joe Perches wrote:
> > Printing kernel pointers via %pK has a minor defect when
> > kptr_restrict is set to 2: the pointer may be emitted
> > as "pK-error" instead of all 0's when in an interrupt.
>
> NAK. This is not a defect, as I explained earlier. It is really a defect
> that it _doesn't_ print 'pK-error' in all cases. 'pK-error' is for
> finding kernel bugs.
Not my understanding.
There is no bug to find when emitting a pointer via %pK.
The only issue is that has_capability_noaudit can not
be called from an interrupt.
next prev parent reply other threads:[~2013-10-11 5:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-11 5:25 Joe Perches
2013-10-11 5:25 ` [PATCH 2/2] vsprintf: Just some neatening Joe Perches
2013-10-11 5:31 ` [PATCH 1/2] vsprintf/sysctl: Bugfix, neaten and document %pK usages Ryan Mallon
2013-10-11 5:38 ` Joe Perches [this message]
2013-10-11 5:49 ` Ryan Mallon
2013-10-11 5:58 ` Joe Perches
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