From: Andrew Morton <akpm@linux-foundation.org>
To: alex.popov@linux.com
Cc: Alexander Potapenko <glider@google.com>,
Kees Cook <keescook@chromium.org>, Jann Horn <jannh@google.com>,
Will Deacon <will@kernel.org>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
Dmitry Vyukov <dvyukov@google.com>,
Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Masahiro Yamada <masahiroy@kernel.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Peter Zijlstra <peterz@infradead.org>,
Krzysztof Kozlowski <krzk@kernel.org>,
Patrick Bellasi <patrick.bellasi@arm.com>,
David Howells <dhowells@redhat.com>,
Eric Biederman <ebiederm@xmission.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Laura Abbott <labbott@redhat.com>, Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Daniel Micay <danielmicay@gmail.com>,
Andrey Konovalov <andreyknvl@google.com>,
Matthew Wilcox <willy@infradead.org>,
Pavel Machek <pavel@denx.de>,
Valentin Schneider <valentin.schneider@arm.com>,
kasan-dev <kasan-dev@googlegroups.com>,
Linux Memory Management List <linux-mm@kvack.org>,
Kernel Hardening <kernel-hardening@lists.openwall.com>,
LKML <linux-kernel@vger.kernel.org>,
notify@kernel.org
Subject: Re: [PATCH RFC v2 2/6] mm/slab: Perform init_on_free earlier
Date: Thu, 3 Dec 2020 12:49:14 -0800 [thread overview]
Message-ID: <20201203124914.25e63b013e9c69c79d481831@linux-foundation.org> (raw)
In-Reply-To: <1772bc7d-e87f-0f62-52a8-e9d9ac99f5e3@linux.com>
On Thu, 3 Dec 2020 22:50:27 +0300 Alexander Popov <alex.popov@linux.com> wrote:
> On 30.09.2020 15:50, Alexander Potapenko wrote:
> > On Tue, Sep 29, 2020 at 8:35 PM Alexander Popov <alex.popov@linux.com> wrote:
> >>
> >> Currently in CONFIG_SLAB init_on_free happens too late, and heap
> >> objects go to the heap quarantine being dirty. Lets move memory
> >> clearing before calling kasan_slab_free() to fix that.
> >>
> >> Signed-off-by: Alexander Popov <alex.popov@linux.com>
> > Reviewed-by: Alexander Potapenko <glider@google.com>
>
> Hello!
>
> Can this particular patch be considered for the mainline kernel?
All patches are considered ;) And merged if they're reviewed, tested,
judged useful, etc.
If you think this particular patch should be fast-tracked then please
send it as a non-RFC, standalone patch. Please also enhance the
changelog so that it actually explains what goes wrong. Presumably
"objects go to the heap quarantine being dirty" causes some
user-visible problem? What is that problem?
next prev parent reply other threads:[~2020-12-03 20:49 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-29 18:35 [PATCH RFC v2 0/6] Break heap spraying needed for exploiting use-after-free Alexander Popov
2020-09-29 18:35 ` [PATCH RFC v2 1/6] mm: Extract SLAB_QUARANTINE from KASAN Alexander Popov
2020-09-29 18:35 ` [PATCH RFC v2 2/6] mm/slab: Perform init_on_free earlier Alexander Popov
2020-09-30 12:50 ` Alexander Potapenko
2020-10-01 19:48 ` Alexander Popov
2020-12-03 19:50 ` Alexander Popov
2020-12-03 20:49 ` Andrew Morton [this message]
2020-12-04 11:54 ` Alexander Popov
2020-09-29 18:35 ` [PATCH RFC v2 3/6] mm: Integrate SLAB_QUARANTINE with init_on_free Alexander Popov
2020-09-29 18:35 ` [PATCH RFC v2 4/6] mm: Implement slab quarantine randomization Alexander Popov
2020-09-29 18:35 ` [PATCH RFC v2 5/6] lkdtm: Add heap quarantine tests Alexander Popov
2020-09-29 18:35 ` [PATCH RFC v2 6/6] mm: Add heap quarantine verbose debugging (not for merge) Alexander Popov
2020-10-01 19:42 ` [PATCH RFC v2 0/6] Break heap spraying needed for exploiting use-after-free Alexander Popov
2020-10-05 22:56 ` Jann Horn
2020-10-06 0:44 ` Matthew Wilcox
2020-10-06 0:48 ` Jann Horn
2020-10-06 2:09 ` Kees Cook
2020-10-06 2:16 ` Jann Horn
2020-10-06 2:19 ` Daniel Micay
2020-10-06 8:35 ` Christopher Lameter
2020-10-06 8:32 ` Christopher Lameter
2020-10-06 17:56 ` Alexander Popov
2020-10-06 18:37 ` Jann Horn
2020-10-06 19:25 ` Alexander Popov
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