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From: yalin wang <yalin.wang2010@gmail.com>
To: Anisse Astier <anisse@astier.eu>
Cc: Pavel Machek <pavel@ucw.cz>,
	Andrew Morton <akpm@linux-foundation.org>,
	Mel Gorman <mgorman@suse.de>,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
	David Rientjes <rientjes@google.com>,
	Alan Cox <gnomes@lxorguk.ukuu.org.uk>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Peter Zijlstra <peterz@infradead.org>,
	PaX Team <pageexec@freemail.hu>,
	Brad Spengler <spender@grsecurity.net>,
	Kees Cook <keescook@chromium.org>,
	Andi Kleen <andi@firstfloor.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Len Brown <len.brown@intel.com>,
	linux-mm@kvack.org, Linux PM list <linux-pm@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v4 2/3] mm/page_alloc.c: add config option to sanitize freed pages
Date: Tue, 19 May 2015 09:58:01 +0800	[thread overview]
Message-ID: <CAFP4FLo9Lrr=pQzwLhj6EfiN5LgRTDMj_hBhQW58UQkC55mYHA@mail.gmail.com> (raw)
In-Reply-To: <CALUN=q+VyQgQ+F1HudumDSjFk1PFyEXdwxPNrM_VqKjDKHTfbw@mail.gmail.com>

2015-05-18 21:04 GMT+08:00 Anisse Astier <anisse@astier.eu>:
> On Mon, May 18, 2015 at 3:02 PM, Pavel Machek <pavel@ucw.cz> wrote:
>>
>> Ok. So there is class of errors where this helps, but you are not
>> aware of any such errors in kernel, so you can't fix them... Right?
>
> Correct.
> --
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> Please read the FAQ at  http://www.tux.org/lkml/
i feel your patch is the same as CONFIG_DEBUG_PAGEALLOC ,
the difference is that CONFIG_DEBUG_PAGEALLOC  will clear
page to a magic number, while your patch will
clear to zero,
do we really need this duplicated function ?

Thanks

  reply	other threads:[~2015-05-19  1:58 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-14 14:19 [PATCH v4 0/3] Sanitizing " Anisse Astier
2015-05-14 14:19 ` [PATCH v4 1/3] PM / Hibernate: prepare for SANITIZE_FREED_PAGES Anisse Astier
2015-05-16  0:28   ` Rafael J. Wysocki
2015-05-18 10:23     ` Anisse Astier
2015-05-19 23:46       ` Rafael J. Wysocki
2015-05-20 11:45         ` PaX Team
2015-05-20 12:07           ` Anisse Astier
2015-05-21  1:11             ` Rafael J. Wysocki
2015-05-20 11:57         ` Anisse Astier
2015-05-14 14:19 ` [PATCH v4 2/3] mm/page_alloc.c: add config option to sanitize freed pages Anisse Astier
2015-05-18 11:21   ` Pavel Machek
2015-05-18 12:41     ` Anisse Astier
2015-05-18 13:02       ` Pavel Machek
2015-05-18 13:04         ` Anisse Astier
2015-05-19  1:58           ` yalin wang [this message]
2015-05-20 12:27             ` Anisse Astier
2015-05-14 14:19 ` [PATCH v4 3/3] mm: Add debug code for SANITIZE_FREED_PAGES Anisse Astier
2015-05-19 12:46 ` [PATCH v4 0/3] Sanitizing freed pages Mel Gorman
2015-05-19 13:35   ` One Thousand Gnomes
2015-05-19 13:56     ` Mel Gorman
2015-05-19 20:59   ` PaX Team
2015-05-20 12:24   ` Anisse Astier

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