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From: Jirka Hladky <jhladky@redhat.com>
To: Alexander Potapenko <glider@google.com>
Cc: kernel-hardening@lists.openwall.com, linux-mm@kvack.org,
	linux-security-module@vger.kernel.org
Subject: init_on_alloc/init_on_free boot options
Date: Thu, 20 Aug 2020 00:18:33 +0200	[thread overview]
Message-ID: <CAE4VaGD8sKqUgOxr0im+OJgwrLxbbXDaKTSqpyAGRx=rr9isUg@mail.gmail.com> (raw)

Hi Alex,

Could you please help me to clarify the purpose of init_on_alloc=1
when init_on_free is enabled?

If I get it right, init_on_free=1 alone guarantees that the memory
returned by the page allocator and SL[AU]B is initialized with zeroes.
What is the purpose of init_on_alloc=1 in that case? We are zeroing
memory twice, or am I missing something?

Thanks a lot!
Jirka


             reply	other threads:[~2020-08-19 22:18 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-19 22:18 Jirka Hladky [this message]
2020-08-19 23:36 ` init_on_alloc/init_on_free boot options Kees Cook
2020-08-20  0:35   ` Jirka Hladky

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