From: "PaX Team" <pageexec@freemail.hu>
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>,
Brad Spengler <spender@grsecurity.net>,
Kees Cook <keescook@chromium.org>,
Andi Kleen <andi@firstfloor.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 2/4] mm/page_alloc.c: add config option to sanitize freed pages
Date: Mon, 04 May 2015 23:50:14 +0200 [thread overview]
Message-ID: <5547E996.30078.8008582@pageexec.freemail.hu> (raw)
In-Reply-To: <1430774218-5311-3-git-send-email-anisse@astier.eu>
On 4 May 2015 at 23:16, Anisse Astier wrote:
> @@ -960,9 +966,15 @@ static int prep_new_page(struct page *page, unsigned int order, gfp_t gfp_flags,
> kernel_map_pages(page, 1 << order, 1);
> kasan_alloc_pages(page, order);
>
> +#ifndef CONFIG_SANITIZE_FREED_PAGES
> + /* SANITIZE_FREED_PAGES relies implicitly on the fact that pages are
> + * cleared before use, so we don't need gfp zero in the default case
> + * because all pages go through the free_pages_prepare code path when
> + * switching from bootmem to the default allocator */
> if (gfp_flags & __GFP_ZERO)
> for (i = 0; i < (1 << order); i++)
> clear_highpage(page + i);
> +#endif
this hunk should not be applied before the hibernation fix otherwise
bisect will break.
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next prev parent reply other threads:[~2015-05-04 21:52 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-04 21:16 [PATCH v2 0/4] Sanitizing " Anisse Astier
2015-05-04 21:16 ` [PATCH v2 1/4] mm/page_alloc.c: cleanup obsolete KM_USER* Anisse Astier
2015-05-04 21:16 ` [PATCH v2 2/4] mm/page_alloc.c: add config option to sanitize freed pages Anisse Astier
2015-05-04 21:50 ` PaX Team [this message]
2015-05-05 12:42 ` Anisse Astier
2015-05-04 21:16 ` [PATCH v2 3/4] PM / Hibernate: fix SANITIZE_FREED_PAGES Anisse Astier
2015-05-04 21:50 ` PaX Team
2015-05-04 22:29 ` Rafael J. Wysocki
2015-05-05 12:41 ` Anisse Astier
2015-05-04 21:16 ` [PATCH v2 4/4] mm: Add debug code for SANITIZE_FREED_PAGES Anisse Astier
2015-05-04 21:50 ` PaX Team
2015-05-05 12:43 ` Anisse Astier
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