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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 5B8EFC76186 for ; Mon, 29 Jul 2019 05:57:45 +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 340F92070B for ; Mon, 29 Jul 2019 05:57:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="RueUPUj+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 340F92070B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender:Content-Type: Content-Transfer-Encoding:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: 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=BnJXZXWse+bg/NK9qoBM7/GvmAXJhoTl/zP3bW1vjQk=; b=RueUPUj+lwD8AWVc99FEQXAeS fVJieTbHpxBXWaZvzrY/KEGgSXJw2E7JQSgNT9BaAdob2gwfJZ4pxtGwDVsGExL9DT+ojvJdqHFfL f1260uLkaibjARY41UJDSHB8/1G5VgZt8UTWrE9biWmLBOiGcaloCc2ybsP65UvKgwsfBlKvP3F/M RiMBNF6rqL2d15KMX8eF2Sd4dkt5VAuTiAT0S4UbN8mCWGJASb9CmgoPf/Dp4QnP4UhABJhgvH/eG Yg8R2531vc7xPyaXErRdwWSajmoiX11PNVNq8Lc54C1y8chAj5RHgj1vhtcUivzCWL1Z6o++Lj6uQ uw84QgdMA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hryfB-0008HK-TP; Mon, 29 Jul 2019 05:57:38 +0000 Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hrye3-0007VL-BD for linux-arm-kernel@lists.infradead.org; Mon, 29 Jul 2019 05:56:29 +0000 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 78B46308FC47; Mon, 29 Jul 2019 05:56:26 +0000 (UTC) Received: from [10.72.12.53] (ovpn-12-53.pek2.redhat.com [10.72.12.53]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7C62660C5F; Mon, 29 Jul 2019 05:56:10 +0000 (UTC) Subject: Re: WARNING in __mmdrop To: Jason Gunthorpe References: <20190725042651-mutt-send-email-mst@kernel.org> <84bb2e31-0606-adff-cf2a-e1878225a847@redhat.com> <20190725092332-mutt-send-email-mst@kernel.org> <11802a8a-ce41-f427-63d5-b6a4cf96bb3f@redhat.com> <20190726074644-mutt-send-email-mst@kernel.org> <5cc94f15-b229-a290-55f3-8295266edb2b@redhat.com> <20190726082837-mutt-send-email-mst@kernel.org> <20190726094353-mutt-send-email-mst@kernel.org> <63754251-a39a-1e0e-952d-658102682094@redhat.com> <20190726150322.GB8695@ziepe.ca> From: Jason Wang Message-ID: Date: Mon, 29 Jul 2019 13:56:08 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190726150322.GB8695@ziepe.ca> Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.43]); Mon, 29 Jul 2019 05:56:26 +0000 (UTC) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190728_225627_477281_0E488971 X-CRM114-Status: GOOD ( 14.60 ) 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: mhocko@suse.com, "Michael S. Tsirkin" , peterz@infradead.org, ldv@altlinux.org, james.bottomley@hansenpartnership.com, linux-mm@kvack.org, namit@vmware.com, mingo@kernel.org, elena.reshetova@intel.com, keescook@chromium.org, aarcange@redhat.com, davem@davemloft.net, hch@infradead.org, christian@brauner.io, syzbot , syzkaller-bugs@googlegroups.com, jglisse@redhat.com, viro@zeniv.linux.org.uk, linux-arm-kernel@lists.infradead.org, wad@chromium.org, linux-parisc@vger.kernel.org, linux-kernel@vger.kernel.org, luto@amacapital.net, ebiederm@xmission.com, akpm@linux-foundation.org, guro@fb.com Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Ck9uIDIwMTkvNy8yNiDkuIvljYgxMTowMywgSmFzb24gR3VudGhvcnBlIHdyb3RlOgo+IE9uIEZy aSwgSnVsIDI2LCAyMDE5IGF0IDEwOjAwOjIwUE0gKzA4MDAsIEphc29uIFdhbmcgd3JvdGU6Cj4+ IFRoZSBxdWVzdGlvbiBpcywgTU1VIG5vdGlmaWVyIGFyZSBhbGxvd2VkIHRvIGJlIGJsb2NrZWQg b24KPj4gaW52YWxpZGF0ZV9yYW5nZV9zdGFydCgpIHdoaWNoIGNvdWxkIGJlIG11Y2ggc2xvd2Vy IHRoYW4gc3luY2hyb25pemVfcmN1KCkKPj4gdG8gZmluaXNoLgo+Pgo+PiBMb29raW5nIGF0IGFt ZGdwdV9tbl9pbnZhbGlkYXRlX3JhbmdlX3N0YXJ0X2dmeCgpIHdoaWNoIGNhbGxzCj4+IGFtZGdw dV9tbl9pbnZhbGlkYXRlX25vZGUoKSB3aGljaCBkaWQ6Cj4+Cj4+ICDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqAgciA9IHJlc2VydmF0aW9uX29iamVjdF93YWl0X3RpbWVvdXRfcmN1KGJv LT50Ym8ucmVzdiwKPj4gIMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqAgdHJ1ZSwgZmFsc2UsIE1BWF9TQ0hFRFVMRV9USU1FT1VUKTsKPj4KPj4gLi4uCj4gVGhl IGdlbmVyYWwgZ3VpZGFuY2UgaGFzIGJlZW4gdGhhdCBpbnZhbGlkYXRlX3N0YXJ0IHNob3VsZCBi bG9jawo+IG1pbmltYWxseSwgaWYgYXQgYWxsLgo+Cj4gSSB3b3VsZCBzYXkgc3luY2hyb25pemVf cmN1IGlzIG91dHNpZGUgdGhhdCBndWlkYW5jZS4KCgpZZXMsIEkgZ2V0IHRoaXMuCgoKPgo+IEJU VywgYWx3YXlzIHJldHVybmluZyBFQUdBSU4gZm9yIG1tdV9ub3RpZmllcl9yYW5nZV9ibG9ja2Fi bGUoKSBpcyBub3QKPiBnb29kIGVpdGhlciwgaXQgc2hvdWxkIGluc3RlYWQgb25seSByZXR1cm4g RUFHQUlOIGlmIGFueQo+IHZob3N0X21hcF9yYW5nZV9vdmVybGFwKCkgaXMgdHJ1ZS4KCgpSaWdo dCwgbGV0IG1lIG9wdGltaXplIHRoYXQuCgpUaGFua3MKCgo+Cj4gSmFzb24KCl9fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFp bGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlz dHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK