From: Vlastimil Babka <vbabka@suse.cz>
To: Alexander Potapenko <glider@google.com>, akpm@linux-foundation.org
Cc: linux-security-module@vger.kernel.org, linux-mm@kvack.org,
ndesaulniers@google.com, kcc@google.com, dvyukov@google.com,
keescook@chromium.org, sspatil@android.com, labbott@redhat.com,
kernel-hardening@lists.openwall.com
Subject: Re: [PATCH] mm: security: introduce CONFIG_INIT_HEAP_ALL
Date: Tue, 16 Apr 2019 10:30:20 +0200 [thread overview]
Message-ID: <35935775-1c0d-6016-5bb3-0abee65a7492@suse.cz> (raw)
In-Reply-To: <20190412124501.132678-1-glider@google.com>
On 4/12/19 2:45 PM, Alexander Potapenko wrote:
> +config INIT_HEAP_ALL
> + bool "Initialize kernel heap allocations"
Calling slab and page allocations together as "heap" is rather uncommon
in the kernel I think. But I don't have a better word right now.
> + default n
> + help
> + Enforce initialization of pages allocated from page allocator
> + and objects returned by kmalloc and friends.
> + Allocated memory is initialized with zeroes, preventing possible
> + information leaks and making the control-flow bugs that depend
> + on uninitialized values more deterministic.
> +
> config GCC_PLUGIN_STRUCTLEAK_VERBOSE
> bool "Report forcefully initialized variables"
> depends on GCC_PLUGIN_STRUCTLEAK
>
next prev parent reply other threads:[~2019-04-16 8:33 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-12 12:45 Alexander Potapenko
2019-04-12 14:16 ` Qian Cai
2019-04-12 15:23 ` Alexander Potapenko
2019-04-16 2:02 ` Andrew Morton
2019-04-16 8:33 ` Vlastimil Babka
2019-04-16 12:21 ` Alexander Potapenko
2019-04-16 8:30 ` Vlastimil Babka [this message]
2019-04-16 12:04 ` Alexander Potapenko
2019-04-16 15:32 ` Christopher Lameter
2019-04-16 16:01 ` Alexander Potapenko
2019-04-16 16:30 ` Christopher Lameter
2019-04-17 11:03 ` Alexander Potapenko
2019-04-17 17:04 ` Alexander Potapenko
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