From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BBBF3C4338F for ; Fri, 23 Jul 2021 06:50:03 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6094860ED7 for ; Fri, 23 Jul 2021 06:50:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6094860ED7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From:CC: References:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=GeieasNq2G7Sh7JzQd/gw8PvWPG7G3KktNU9Nw+AUoc=; b=B4Im41T4tXdZarRkZlCdHN1g9M gtpzck9Jr9+vWrLEBWdgheft0NAb36Xir/Wdqh9f/gwtBEvhz9f7NPOXQoDugjM6mkbf2vOWTN+2C Q45CsTd5w3JSL9BkXPBQex3xkHZbwhOH8amqia147rw51kLdEIjwP7NnnZJtAE14UB1N3k178xueP AIbdci+BV9CsrqErP7ZfyM6atPFgn/QzvXQXrl6crIE3Vxl6LMPx/GHXBmxSPsIi7NVmRQF1veLIH Pycl7MhBy8JWG7gcPK9ze5xQsRusE5dc3b/wkBdnbVNWWD9CsknESou0tw0AuZzzFLr8QPiRfB6hX Yi98QWig==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m6p0D-003bRO-Mi; Fri, 23 Jul 2021 06:49:45 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m6p0A-003bQ9-PC for linux-riscv@lists.infradead.org; Fri, 23 Jul 2021 06:49:45 +0000 Received: from dggemv704-chm.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4GWKbW3WJTzZs01; Fri, 23 Jul 2021 14:46:15 +0800 (CST) Received: from dggpemm000001.china.huawei.com (7.185.36.245) by dggemv704-chm.china.huawei.com (10.3.19.47) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Fri, 23 Jul 2021 14:49:39 +0800 Received: from [10.174.177.250] (10.174.177.250) by dggpemm000001.china.huawei.com (7.185.36.245) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Fri, 23 Jul 2021 14:49:39 +0800 Subject: Re: [PATCH -next v2] riscv: add VMAP_STACK overflow detection To: Jisheng Zhang References: <87bl6yrcmd.fsf@igel.home> <20210722213724.1f12a0e7@xhacker> <87zguexslf.fsf@igel.home> <20210723075432.098634a2@xhacker> <52e3626a-2b40-bda6-de0e-68ea12a86dd9@huawei.com> <20210723122925.67a14562@xhacker> <20210723124025.669cb4ec@xhacker> CC: Andreas Schwab , Atish Patra , Palmer Dabbelt , Paul Walmsley , Albert Ou , linux-riscv , "linux-kernel@vger.kernel.org List" From: tongtiangen Message-ID: <7775c6bd-dc55-bb0b-10d9-cde5099b149a@huawei.com> Date: Fri, 23 Jul 2021 14:49:38 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.7.1 MIME-Version: 1.0 In-Reply-To: <20210723124025.669cb4ec@xhacker> X-Originating-IP: [10.174.177.250] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To dggpemm000001.china.huawei.com (7.185.36.245) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210722_234943_334382_B7531363 X-CRM114-Status: GOOD ( 13.77 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org CgpPbiAyMDIxLzcvMjMgMTI6NDAsIEppc2hlbmcgWmhhbmcgd3JvdGU6Cj4gT24gRnJpLCAyMyBK dWwgMjAyMSAxMjoyOToyNSArMDgwMAo+IEppc2hlbmcgWmhhbmcgPGpzemhhbmczQG1haWwudXN0 Yy5lZHUuY24+IHdyb3RlOgo+Cj4+IE9uIEZyaSwgMjMgSnVsIDIwMjEgMDk6MzY6NDcgKzA4MDAK Pj4gdG9uZ3RpYW5nZW4gPHRvbmd0aWFuZ2VuQGh1YXdlaS5jb20+IHdyb3RlOgo+Pgo+Pj4gT24g MjAyMS83LzIzIDc6NTQsIEppc2hlbmcgWmhhbmcgd3JvdGU6Cj4+Pj4gT24gVGh1LCAyMiBKdWwg MjAyMSAxNzo0Mjo1MiArMDIwMAo+Pj4+IEFuZHJlYXMgU2Nod2FiIDxzY2h3YWJAbGludXgtbTY4 ay5vcmc+IHdyb3RlOgo+Pj4+Cj4+Pj4+IE9uIEp1bCAyMiAyMDIxLCBKaXNoZW5nIFpoYW5nIHdy b3RlOgo+Pj4+Pgo+Pj4+Pj4gSSB0aGluayB3ZSBuZWVkIHRvIHBpbiB0aGUgc3RhY2sgYmVmb3Jl IGNhbGxpbmcgZ2V0X3djaGFuKCksIGNvdWxkIHlvdSBwbGVhc2UKPj4+Pj4+IHRyeSBiZWxvdyBw YXRjaD8KPj4+Pj4KPj4+Pj4gVGhhbmtzLCB0aGlzIGZpeGVzIHRoZSBjcmFzaCBmb3IgbWUuCj4+ Pj4+Cj4+Pj4+IEFuZHJlYXMuCj4+Pj4+Cj4+Pj4KPj4+PiBUaGFua3MgZm9yIHRlc3RpbmcuIEkg d2lsbCBzZW5kIG91dCBmb3JtYWwgcGF0Y2ggbGF0ZXIKPj4+Pgo+Pj4+IFRoYW5rcwo+Pj4+Cj4+ Pj4gLgo+Pj4+Cj4+Pgo+Pj4gSGkgYWxsOgo+Pj4gSSB0cmllZCB0byByZXByb2R1Y2VkIHRoaXMg Y3Jhc2ggaW4gb3BlblNVU0UgY29kZSByZXBv77yICj4+PiBodHRwczovL2dpdGh1Yi5jb20vb3Bl bnN1c2Uva2VybmVsIO+8iSwgYnV0IG5vdCByZXByb2R1Y2VkIHN1Y2Nlc3NmdWxseS4KPj4+Cj4+ PiAgRnJvbSB0aGUgcGF0Y2ggb2YgcHJvYmxlbSByZXBhaXIsIHRoZSBjcmFzaCBpcyBkdWUgdG8g dGFzay0+c3RhY2sgaXMKPj4+IHJlbGVhc2VkIGJlZm9yZSBjYWxsaW5nIGdldF93Y2hhbiwgdGhl IHRhc2sgc3RhdGUgb2YgbWF5YmUgVEFTS19ERUFELgo+Pj4KPj4+IFZNQVBfU1RBQ0sgaXMgdXNl ZCB0byBkZXRlY3Qga2VybmVsIHN0YWNrIG92ZXJmbG93LCB0aGVyZSBpcyBubwo+Pj4gY29ubmVj dGlvbiBiZXR3ZWVuIHRoZSB0d28sIGl0IG1ha2VzIG1lIGEgbGl0dGxlIGNvbmZ1c2VkLgo+Pgo+ PiBJIGJlbGlldmUgdGhlIGJ1ZyBleGlzdHMgZnJvbSB0aGUgZmlyc3QgZGF5IG9mIHJpc2N2IG1h aW5saW5lZC4KPj4KPj4gU2luY2UgVEhSRUFEX0lORk9fSU5fVEFTSz15IGluIHJpc2N2LCBzbyB3 aGVuIHRhc2sgc3RhY2sgY2FuIGJlIGZyZWVkCj4+IGJlZm9yZSBiZWluZyBkZXN0cm95ZWQuCj4K PiB0eXBvOiB0YXNrIHN0YWNrIGNhbiBiZSBmcmVlZCBiZWZvcmUgdGFzayBpcyBkZXN0cm95ZWQK Pgo+Pgo+PiBXaGVuIFZNQVBfU1RBQ0s9biwgdGFzaydzIHN0YWNrIGlzIGFsbG9jYXRlZCBmcm9t IGxpbmVhciBtYXBwaW5nLiBXaGVuCj4+IHRhc2sgc3RhY2sgaXMgZnJlZWQsIHRoZSBjb3JyZXNw b25kaW5nIG1hcHBpbmcgc3RpbGwgZXhpc3RzLCBhbmQgc2luY2UKPj4gZ2V0X3djaGFuKCkgb25s eSByZWFkLCBubyBoYXJtIGlzIG9ic2VydmVkIHNvIGZhci4KPj4KPj4gV2hlbiBWTUFQX1NUQUNL PXksIHRhc2sncyBzdGFjayBpcyBhbGxvY2F0ZWQgZnJvbSB2bWFsbG9jIGFyZWEuIFdoZW4KPj4g dGFzayBzdGFjayBpcyBmcmVlZCwgdGhlIGNvcnJlc3BvbmRpbmcgbWFwcGluZyBtYXkgbm90IGV4 aXN0LCBzbyBJIGV4cGVjdAo+PiBNTVUgZmF1bHQgaGVyZSwgdGh1cyB0aGUga2VybmVsIHBhbmlj Lgo+Pgo+PiBJbiBzdW1tYXJ5LCB0aGUgYnVnIGlzbid0IHJlbGF0ZWQgd2l0aCBWTUFQX1NUQUNL LCBidXQgVk1BUF9TVEFDSyBtYWtlcwo+PiB0aGUgYnVnIG9ic2VydmFibGUuCj4+Cj4+IFRoYW5r cwoKVGhpcyBleHBsYW5hdGlvbiBpcyB1bmRlcnN0YW5kYWJsZSwgaXQgaXMgbmVjZXNzYXJ5IHRv IHBlcmZvcm0gYSBzdGFjayAKdmFsaWRpdHkgY2hlY2sgYmVmb3JlIHdhbGtfc3RhY2tmcmFtZS4K ClRoYW5rcwoKPj4KPj4KPj4KPj4gX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX18KPj4gbGludXgtcmlzY3YgbWFpbGluZyBsaXN0Cj4+IGxpbnV4LXJpc2N2QGxp c3RzLmluZnJhZGVhZC5vcmcKPj4gaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9s aXN0aW5mby9saW51eC1yaXNjdgo+Cj4KPiAuCj4KCl9fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fCmxpbnV4LXJpc2N2IG1haWxpbmcgbGlzdApsaW51eC1yaXNj dkBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4v bGlzdGluZm8vbGludXgtcmlzY3YK