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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190909085339.25350-1-walter-zh.wu@mediatek.com> Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Mon, 09 Sep 2019 10:57:08 +0000 (UTC) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190909_035710_759868_D52AD565 X-CRM114-Status: GOOD ( 20.64 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: wsd_upstream@mediatek.com, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 09.09.19 10:53, Walter Wu wrote: > KASAN will record last stack of page in order to help programmer > to see memory corruption caused by page. > > What is difference between page_owner and our patch? > page_owner records alloc stack of page, but our patch is to record > last stack(it may be alloc or free stack of page). > > Signed-off-by: Walter Wu > --- > mm/page_ext.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/mm/page_ext.c b/mm/page_ext.c > index 5f5769c7db3b..7ca33dcd9ffa 100644 > --- a/mm/page_ext.c > +++ b/mm/page_ext.c > @@ -65,6 +65,9 @@ static struct page_ext_operations *page_ext_ops[] = { > #if defined(CONFIG_IDLE_PAGE_TRACKING) && !defined(CONFIG_64BIT) > &page_idle_ops, > #endif > +#ifdef CONFIG_KASAN > + &page_stack_ops, > +#endif > }; > > static unsigned long total_usage; > Are you sure this patch compiles? t460s: ~/git/linux virtio-mem $ git grep page_stack_ops t460s: ~/git/linux virtio-mem $ -- Thanks, David / dhildenb _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel