From: Walter Wu <walter-zh.wu@mediatek•com>
To: Vlastimil Babka <vbabka@suse•cz>
Cc: Qian Cai <cai@lca•pw>,
wsd_upstream@mediatek•com, Arnd Bergmann <arnd@arndb•de>,
linux-mm@kvack•org, Andrey Konovalov <andreyknvl@google•com>,
linux-mediatek@lists•infradead.org, linux-kernel@vger•kernel.org,
kasan-dev@googlegroups•com,
Martin Schwidefsky <schwidefsky@de•ibm.com>,
Alexander Potapenko <glider@google•com>,
linux-arm-kernel@lists•infradead.org,
Matthias Brugger <matthias.bgg@gmail•com>,
Andrey Ryabinin <aryabinin@virtuozzo•com>,
Andrew Morton <akpm@linux-foundation•org>,
Dmitry Vyukov <dvyukov@google•com>
Subject: Re: [PATCH v3] mm/kasan: dump alloc and free stack for page allocator
Date: Thu, 12 Sep 2019 22:08:28 +0800 [thread overview]
Message-ID: <1568297308.19040.5.camel@mtksdccf07> (raw)
In-Reply-To: <c4d2518f-4813-c941-6f47-73897f420517@suse.cz>
> extern void __reset_page_owner(struct page *page, unsigned int order);
> diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan
> index 6c9682ce0254..dc560c7562e8 100644
> --- a/lib/Kconfig.kasan
> +++ b/lib/Kconfig.kasan
> @@ -41,6 +41,8 @@ config KASAN_GENERIC
> select SLUB_DEBUG if SLUB
> select CONSTRUCTORS
> select STACKDEPOT
> + select PAGE_OWNER
> + select PAGE_OWNER_FREE_STACK
> help
> Enables generic KASAN mode.
> Supported in both GCC and Clang. With GCC it requires version 4.9.2
> @@ -63,6 +65,8 @@ config KASAN_SW_TAGS
> select SLUB_DEBUG if SLUB
> select CONSTRUCTORS
> select STACKDEPOT
> + select PAGE_OWNER
> + select PAGE_OWNER_FREE_STACK
> help
What is the difference between PAGE_OWNER+PAGE_OWNER_FREE_STACK and
DEBUG_PAGEALLOC?
If you directly enable PAGE_OWNER+PAGE_OWNER_FREE_STACK
PAGE_OWNER_FREE_STACK,don't you think low-memory device to want to use
KASAN?
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next prev parent reply other threads:[~2019-09-12 14:08 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-11 8:39 [PATCH v3] mm/kasan: dump alloc and free stack for page allocator Walter Wu
2019-09-11 15:19 ` Qian Cai
2019-09-12 13:53 ` Vlastimil Babka
2019-09-12 14:08 ` Andrey Ryabinin
2019-09-12 14:08 ` Walter Wu [this message]
2019-09-12 14:31 ` Vlastimil Babka
2019-09-12 15:13 ` Walter Wu
2019-09-12 17:05 ` Andrey Ryabinin
2019-09-16 9:42 ` Vlastimil Babka
2019-09-16 15:57 ` Andrey Ryabinin
2019-09-17 8:19 ` Vlastimil Babka
2019-09-23 8:20 ` [PATCH] mm, debug, kasan: save and dump freeing stack trace for kasan Vlastimil Babka
2019-09-25 9:41 ` Andrey Ryabinin
2019-09-12 14:10 ` [PATCH v3] mm/kasan: dump alloc and free stack for page allocator Qian Cai
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