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From: Pavel Machek <pavel@ucw.cz>
To: Anisse Astier <anisse@astier.eu>
Cc: 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@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 2/3] mm/page_alloc.c: add config option to sanitize freed pages
Date: Mon, 18 May 2015 13:21:52 +0200	[thread overview]
Message-ID: <20150518112152.GA16999@amd> (raw)
In-Reply-To: <1431613188-4511-3-git-send-email-anisse@astier.eu>

On Thu 2015-05-14 16:19:47, Anisse Astier wrote:
> This new config option will sanitize all freed pages. This is a pretty
> low-level change useful to track some cases of use-after-free, help
> kernel same-page merging in VM environments, and counter a few info
> leaks.

Could you document the "few info leaks"? We may want to fix them for
!SANTIZE_FREED_PAGES case, too...

Thanks,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

WARNING: multiple messages have this Message-ID (diff)
From: Pavel Machek <pavel@ucw.cz>
To: Anisse Astier <anisse@astier.eu>
Cc: 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@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 2/3] mm/page_alloc.c: add config option to sanitize freed pages
Date: Mon, 18 May 2015 13:21:52 +0200	[thread overview]
Message-ID: <20150518112152.GA16999@amd> (raw)
In-Reply-To: <1431613188-4511-3-git-send-email-anisse@astier.eu>

On Thu 2015-05-14 16:19:47, Anisse Astier wrote:
> This new config option will sanitize all freed pages. This is a pretty
> low-level change useful to track some cases of use-after-free, help
> kernel same-page merging in VM environments, and counter a few info
> leaks.

Could you document the "few info leaks"? We may want to fix them for
!SANTIZE_FREED_PAGES case, too...

Thanks,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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  reply	other threads:[~2015-05-18 11:22 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-14 14:19 [PATCH v4 0/3] Sanitizing freed pages Anisse Astier
2015-05-14 14:19 ` Anisse Astier
2015-05-14 14:19 ` Anisse Astier
2015-05-14 14:19 ` [PATCH v4 1/3] PM / Hibernate: prepare for SANITIZE_FREED_PAGES Anisse Astier
2015-05-14 14:19   ` Anisse Astier
2015-05-16  0:28   ` Rafael J. Wysocki
2015-05-16  0:28     ` Rafael J. Wysocki
2015-05-18 10:23     ` Anisse Astier
2015-05-18 10:23       ` Anisse Astier
2015-05-19 23:46       ` Rafael J. Wysocki
2015-05-19 23:46         ` Rafael J. Wysocki
2015-05-20 11:45         ` PaX Team
2015-05-20 11:45           ` PaX Team
2015-05-20 12:07           ` Anisse Astier
2015-05-20 12:07             ` Anisse Astier
2015-05-21  1:11             ` Rafael J. Wysocki
2015-05-21  1:11               ` Rafael J. Wysocki
2015-05-20 11:57         ` Anisse Astier
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
2015-05-14 14:19   ` Anisse Astier
2015-05-18 11:21   ` Pavel Machek [this message]
2015-05-18 11:21     ` Pavel Machek
2015-05-18 12:41     ` Anisse Astier
2015-05-18 12:41       ` Anisse Astier
2015-05-18 13:02       ` Pavel Machek
2015-05-18 13:02         ` Pavel Machek
2015-05-18 13:04         ` Anisse Astier
2015-05-18 13:04           ` Anisse Astier
2015-05-19  1:58           ` yalin wang
2015-05-20 12:27             ` Anisse Astier
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
2015-05-14 14:19   ` Anisse Astier
2015-05-19 12:46 ` [PATCH v4 0/3] Sanitizing freed pages Mel Gorman
2015-05-19 12:46   ` Mel Gorman
2015-05-19 13:35   ` One Thousand Gnomes
2015-05-19 13:35     ` One Thousand Gnomes
2015-05-19 13:56     ` Mel Gorman
2015-05-19 13:56       ` Mel Gorman
2015-05-19 20:59   ` PaX Team
2015-05-19 20:59     ` PaX Team
2015-05-20 12:24   ` Anisse Astier
2015-05-20 12:24     ` Anisse Astier

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