From: Christoph Lameter <cl@linux.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: Kees Cook <keescook@chromium.org>,
Andrew Morton <akpm@linux-foundation.org>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mm: Add additional consistency check
Date: Tue, 18 Apr 2017 08:31:24 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.20.1704180829360.13656@east.gentwo.org> (raw)
In-Reply-To: <20170418064124.GA22360@dhcp22.suse.cz>
On Tue, 18 Apr 2017, Michal Hocko wrote:
> > The patch does not do that. See my review. Invalid points to kfree are
> > already caught with a bug on. See kfree in mm/slub.c
>
> Are you even reading those emails? First of all we are talking about
> slab here. Secondly I've already pointed out that the BUG_ON(!PageSlab)
> in kmem_freepages is already too late because we do operate on a
> potential garbage from invalid page...
Again this is confusing because you are discussing something that was not
covered by the patch submitted. Please start another discussion thread
on kfree() separately from the discussion of the patch here.
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Lameter <cl@linux.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: Kees Cook <keescook@chromium.org>,
Andrew Morton <akpm@linux-foundation.org>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mm: Add additional consistency check
Date: Tue, 18 Apr 2017 08:31:24 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.20.1704180829360.13656@east.gentwo.org> (raw)
In-Reply-To: <20170418064124.GA22360@dhcp22.suse.cz>
On Tue, 18 Apr 2017, Michal Hocko wrote:
> > The patch does not do that. See my review. Invalid points to kfree are
> > already caught with a bug on. See kfree in mm/slub.c
>
> Are you even reading those emails? First of all we are talking about
> slab here. Secondly I've already pointed out that the BUG_ON(!PageSlab)
> in kmem_freepages is already too late because we do operate on a
> potential garbage from invalid page...
Again this is confusing because you are discussing something that was not
covered by the patch submitted. Please start another discussion thread
on kfree() separately from the discussion of the patch here.
--
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next prev parent reply other threads:[~2017-04-18 13:31 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-31 16:40 [PATCH] mm: Add additional consistency check Kees Cook
2017-03-31 16:40 ` Kees Cook
2017-03-31 21:33 ` Andrew Morton
2017-03-31 21:33 ` Andrew Morton
2017-04-01 0:04 ` Kees Cook
2017-04-01 0:04 ` Kees Cook
2017-04-03 3:40 ` Michael Ellerman
2017-04-03 3:40 ` Michael Ellerman
2017-04-03 14:03 ` Christoph Lameter
2017-04-03 14:03 ` Christoph Lameter
2017-04-03 14:53 ` Matthew Wilcox
2017-04-03 14:53 ` Matthew Wilcox
2017-04-04 11:30 ` Michal Hocko
2017-04-04 11:30 ` Michal Hocko
2017-04-04 15:07 ` Christoph Lameter
2017-04-04 15:07 ` Christoph Lameter
2017-04-04 15:16 ` Michal Hocko
2017-04-04 15:16 ` Michal Hocko
2017-04-04 15:46 ` Kees Cook
2017-04-04 15:46 ` Kees Cook
2017-04-04 15:58 ` Michal Hocko
2017-04-04 15:58 ` Michal Hocko
2017-04-04 16:02 ` Kees Cook
2017-04-04 16:02 ` Kees Cook
2017-04-04 19:13 ` Christoph Lameter
2017-04-04 19:13 ` Christoph Lameter
2017-04-04 19:42 ` Michal Hocko
2017-04-04 19:42 ` Michal Hocko
2017-04-04 19:58 ` Christoph Lameter
2017-04-04 19:58 ` Christoph Lameter
2017-04-04 20:13 ` Michal Hocko
2017-04-04 20:13 ` Michal Hocko
2017-04-11 4:58 ` Kees Cook
2017-04-11 4:58 ` Kees Cook
2017-04-11 13:46 ` Michal Hocko
2017-04-11 13:46 ` Michal Hocko
2017-04-11 14:14 ` Kees Cook
2017-04-11 14:14 ` Kees Cook
2017-04-11 14:19 ` Michal Hocko
2017-04-11 14:19 ` Michal Hocko
2017-04-11 16:05 ` Kees Cook
2017-04-11 16:05 ` Kees Cook
2017-04-11 16:16 ` Christoph Lameter
2017-04-11 16:16 ` Christoph Lameter
2017-04-11 16:19 ` Kees Cook
2017-04-11 16:19 ` Kees Cook
2017-04-11 16:23 ` Christoph Lameter
2017-04-11 16:23 ` Christoph Lameter
2017-04-11 16:30 ` Kees Cook
2017-04-11 16:30 ` Kees Cook
2017-04-11 16:26 ` Christoph Lameter
2017-04-11 16:26 ` Christoph Lameter
2017-04-11 16:41 ` Michal Hocko
2017-04-11 16:41 ` Michal Hocko
2017-04-11 18:03 ` Christoph Lameter
2017-04-11 18:03 ` Christoph Lameter
2017-04-11 18:30 ` Michal Hocko
2017-04-11 18:30 ` Michal Hocko
2017-04-11 18:44 ` Christoph Lameter
2017-04-11 18:44 ` Christoph Lameter
2017-04-11 18:55 ` Michal Hocko
2017-04-11 18:55 ` Michal Hocko
2017-04-11 18:59 ` Christoph Lameter
2017-04-11 18:59 ` Christoph Lameter
2017-04-11 19:39 ` Michal Hocko
2017-04-11 19:39 ` Michal Hocko
2017-04-17 15:22 ` Christoph Lameter
2017-04-17 15:22 ` Christoph Lameter
2017-04-18 6:41 ` Michal Hocko
2017-04-18 6:41 ` Michal Hocko
2017-04-18 13:31 ` Christoph Lameter [this message]
2017-04-18 13:31 ` Christoph Lameter
2017-04-18 13:37 ` Christoph Lameter
2017-04-18 13:37 ` Christoph Lameter
2017-04-28 1:11 ` Kees Cook
2017-04-28 1:11 ` Kees Cook
2017-04-28 6:16 ` Michal Hocko
2017-04-28 6:16 ` Michal Hocko
2017-04-27 12:06 ` Michal Hocko
2017-04-27 12:06 ` Michal Hocko
2017-04-11 18:30 ` Christoph Lameter
2017-04-11 18:30 ` Christoph Lameter
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