From: Kees Cook <keescook@chromium.org>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrey Konovalov <andreyknvl@gmail.com>,
Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Roman Gushchin <roman.gushchin@linux.dev>,
Hyeonggon Yoo <42.hyeyoo@gmail.com>,
Andrey Ryabinin <ryabinin.a.a@gmail.com>,
Alexander Potapenko <glider@google.com>,
Dmitry Vyukov <dvyukov@google.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
linux-mm@kvack.org, kasan-dev@googlegroups.com,
linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org
Subject: Re: [PATCH v2] mm: Make ksize() a reporting-only function
Date: Fri, 18 Nov 2022 09:11:07 -0800 [thread overview]
Message-ID: <202211180907.A4C218F@keescook> (raw)
In-Reply-To: <230127af-6c71-e51e-41a4-aa9547c2c847@suse.cz>
On Fri, Nov 18, 2022 at 11:32:36AM +0100, Vlastimil Babka wrote:
> On 11/18/22 04:56, Kees Cook wrote:
> > With all "silently resizing" callers of ksize() refactored, remove the
>
> At cursory look seems it's true now in -next (but not mainline?) can you
> confirm?
Almost, yes. I realized there is 1 case in the BPF verifier that
remains. (I thought it was picked up, but only a prereq patch was.) I'm
going to resend that one today, but I would expect it to be picked
up soon. (But, yes, definitely not for mainline.)
> That would probably be safe enough to have slab.git expose this to -next now
> and time a PR appropriately in the next merge window?
Possibly. I suspect syzkaller might trip KASAN on any larger BPF tests
until I get the last one landed. And if you don't want to do the timing
of the PR, I can carry this patch in my hardening tree, since I already
have to do a two-part early/late-merge-window PR there.
--
Kees Cook
next prev parent reply other threads:[~2022-11-18 17:11 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-18 3:56 Kees Cook
2022-11-18 10:32 ` Vlastimil Babka
2022-11-18 17:11 ` Kees Cook [this message]
2022-11-20 16:50 ` Vlastimil Babka
2022-11-23 1:30 ` David Rientjes
2022-11-26 17:04 ` Andrey Konovalov
2022-11-27 0:55 ` Kees Cook
2022-11-30 14:11 ` Andrey Konovalov
2022-12-01 16:51 ` Kees Cook
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