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,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 2EB8CC7618B for ; Tue, 23 Jul 2019 13:31:52 +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 07F41227BE for ; Tue, 23 Jul 2019 13:31:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="jBFo838B" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 07F41227BE 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=cJXTFGtmpwpt7f/2M/pWXy91aWuyZPnm5cRrAqoUnvI=; b=jBFo838BFGYtuD71Vueph6zaE FwFviL8aNL0KwPGgQFmQskBIWCzb/X/3FFPqBzQYWs17U0cMebOziI7R/CTZUi+cj7AfodHY7ds/B ocCiKPG3HSAoWS437nKG00ab7sXODHyZjo5EsUwzv4fTNQ7qSNqH1Ajvl/btlfaKV9Ls7+lX0nBlq E9ZxT5nTSq1u03m4QXGApP0wHn4uAq5sBPcd1vYgXiG1M+2Gg4Ol9MkDmZ5oP/vav5cCNvQVzB9cC s304x14LRDgECf3tESKgNxdIAvGY0cETU11rVAtKugJoBkysoSkQNwZOxhCo+M2GUN2jzTdTEgQHU O8FKnd/Zg==; 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 1hputT-0000nF-Fp; Tue, 23 Jul 2019 13:31:51 +0000 Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hputR-0000mj-6u for linux-arm-kernel@lists.infradead.org; Tue, 23 Jul 2019 13:31:50 +0000 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id B85FF2CD801; Tue, 23 Jul 2019 13:31:47 +0000 (UTC) Received: from [10.72.12.26] (ovpn-12-26.pek2.redhat.com [10.72.12.26]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6BBD55C22D; Tue, 23 Jul 2019 13:31:33 +0000 (UTC) Subject: Re: WARNING in __mmdrop To: "Michael S. Tsirkin" References: <20190721081447-mutt-send-email-mst@kernel.org> <85dd00e2-37a6-72b7-5d5a-8bf46a3526cf@redhat.com> <20190722040230-mutt-send-email-mst@kernel.org> <4bd2ff78-6871-55f2-44dc-0982ffef3337@redhat.com> <20190723010019-mutt-send-email-mst@kernel.org> <20190723032024-mutt-send-email-mst@kernel.org> <1d14de4d-0133-1614-9f64-3ded381de04e@redhat.com> <20190723035725-mutt-send-email-mst@kernel.org> <3f4178f1-0d71-e032-0f1f-802428ceca59@redhat.com> <20190723051828-mutt-send-email-mst@kernel.org> From: Jason Wang Message-ID: Date: Tue, 23 Jul 2019 21:31:35 +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: <20190723051828-mutt-send-email-mst@kernel.org> Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Tue, 23 Jul 2019 13:31:48 +0000 (UTC) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190723_063149_300037_C96C6AC4 X-CRM114-Status: GOOD ( 16.95 ) 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, 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 Ck9uIDIwMTkvNy8yMyDkuIvljYg1OjI2LCBNaWNoYWVsIFMuIFRzaXJraW4gd3JvdGU6Cj4gT24g VHVlLCBKdWwgMjMsIDIwMTkgYXQgMDQ6NDk6MDFQTSArMDgwMCwgSmFzb24gV2FuZyB3cm90ZToK Pj4gT24gMjAxOS83LzIzIOS4i+WNiDQ6MTAsIE1pY2hhZWwgUy4gVHNpcmtpbiB3cm90ZToKPj4+ IE9uIFR1ZSwgSnVsIDIzLCAyMDE5IGF0IDAzOjUzOjA2UE0gKzA4MDAsIEphc29uIFdhbmcgd3Jv dGU6Cj4+Pj4gT24gMjAxOS83LzIzIOS4i+WNiDM6MjMsIE1pY2hhZWwgUy4gVHNpcmtpbiB3cm90 ZToKPj4+Pj4+PiBSZWFsbHkgbGV0J3MganVzdCB1c2Uga2ZyZWVfcmN1LiBJdCdzIHdheSBjbGVh bmVyOiBmaXJlIGFuZCBmb3JnZXQuCj4+Pj4+PiBMb29rcyBub3QsIHlvdSBuZWVkIHJhdGUgbGlt aXQgdGhlIGZpcmUgYXMgeW91J3ZlIGZpZ3VyZWQgb3V0Pwo+Pj4+PiBTZWUgdGhlIGRpc2N1c3Np b24gdGhhdCBmb2xsb3dlZC4gQmFzaWNhbGx5IG5vLCBpdCdzIGdvb2QgZW5vdWdoCj4+Pj4+IGFs cmVhZHkgYW5kIGlzIG9ubHkgZ29pbmcgdG8gYmUgYmV0dGVyLgo+Pj4+Pgo+Pj4+Pj4gQW5kIGlu IGZhY3QsCj4+Pj4+PiB0aGUgc3luY2hyb25pemF0aW9uIGlzIG5vdCBldmVuIG5lZWRlZCwgZG9l cyBpdCBoZWxwIGlmIEkgbGVhdmUgYSBjb21tZW50IHRvCj4+Pj4+PiBleHBsYWluPwo+Pj4+PiBM ZXQncyB0cnkgdG8gZmlndXJlIGl0IG91dCBpbiB0aGUgbWFpbCBmaXJzdC4gSSdtIHByZXR0eSBz dXJlIHRoZQo+Pj4+PiBjdXJyZW50IGxvZ2ljIGlzIHdyb25nLgo+Pj4+IEhlcmUgaXMgd2hhdCB0 aGUgY29kZSB3aGF0IHRvIGFjaGlldmU6Cj4+Pj4KPj4+PiAtIFRoZSBtYXAgd2FzIHByb3RlY3Rl ZCBieSBSQ1UKPj4+Pgo+Pj4+IC0gV3JpdGVycyBhcmU6IE1NVSBub3RpZmllciBpbnZhbGlkYXRp b24gY2FsbGJhY2tzLCBmaWxlIG9wZXJhdGlvbnMgKGlvY3Rscwo+Pj4+IGV0YyksIG1ldGFfcHJl ZmV0Y2ggKGRhdGFwYXRoKQo+Pj4+Cj4+Pj4gLSBSZWFkZXJzIGFyZTogbWVtb3J5IGFjY2Vzc29y Cj4+Pj4KPj4+PiBXcml0ZXIgYXJlIHN5bmNocm9uaXplZCB0aHJvdWdoIG1tdV9sb2NrLiBSQ1Ug aXMgdXNlZCB0byBzeW5jaHJvbml6ZWQKPj4+PiBiZXR3ZWVuIHdyaXRlcnMgYW5kIHJlYWRlcnMu Cj4+Pj4KPj4+PiBUaGUgc3luY2hyb25pemVfcmN1KCkgaW4gdmhvc3RfcmVzZXRfdnFfbWFwcygp IHdhcyB1c2VkIHRvIHN5bmNocm9uaXplZCBpdAo+Pj4+IHdpdGggcmVhZGVycyAobWVtb3J5IGFj Y2Vzc29ycykgaW4gdGhlIHBhdGggb2YgZmlsZSBvcGVyYXRpb25zLiBCdXQgaW4gdGhpcwo+Pj4+ IGNhc2UsIHZxLT5tdXRleCB3YXMgYWxyZWFkeSBoZWxkLCB0aGlzIG1lYW5zIGl0IGhhcyBiZWVu IHNlcmlhbGl6ZWQgd2l0aAo+Pj4+IG1lbW9yeSBhY2Nlc3Nvci4gVGhhdCdzIHdoeSBJIHRoaW5r IGl0IGNvdWxkIGJlIHJlbW92ZWQgc2FmZWx5Lgo+Pj4+Cj4+Pj4gQW55dGhpbmcgSSBtaXNzIGhl cmU/Cj4+Pj4KPj4+IFNvIGludmFsaWRhdGUgY2FsbGJhY2tzIG5lZWQgdG8gcmVzZXQgdGhlIG1h cCwgYW5kIHRoZXkgZG8KPj4+IG5vdCBoYXZlIHZxIG11dGV4LiBIb3cgY2FuIHRoZXkgZG8gdGhp cyBhbmQgZnJlZQo+Pj4gdGhlIG1hcCBzYWZlbHk/IFRoZXkgbmVlZCBzeW5jaHJvbml6ZV9yY3Ug b3Iga2ZyZWVfcmN1IHJpZ2h0Pwo+PiBJbnZhbGlkYXRpb24gY2FsbGJhY2tzIG5lZWQgYnV0IGZp bGUgb3BlcmF0aW9ucyAoZS5nIGlvY3RsKSBub3QuCj4+Cj4+Cj4+PiBBbmQgSSB3b3JyeSBzb21l d2hhdCB0aGF0IHN5bmNocm9uaXplX3JjdSBpbiBhbiBNTVUgbm90aWZpZXIKPj4+IGlzIGEgcHJv YmxlbSwgTU1VIG5vdGlmaWVycyBhcmUgc3VwcG9zZWQgdG8gYmUgcXVpY2s6Cj4+IExvb2tzIG5v dCwgc2luY2UgaXQgY2FuIGFsbG93IHRvIGJlIGJsb2NrZWQgYW5kIGxvdHMgb2YgZHJpdmVyIGRl cGVuZHMgb24KPj4gdGhpcy4gKEUuZyBtbXVfbm90aWZpZXJfcmFuZ2VfYmxvY2thYmxlKCkpLgo+ IFJpZ2h0LCB0aGV5IGNhbiBibG9jay4gU28gd2h5IGRvbid0IHdlIHRha2UgYSBWUSBtdXRleCBh bmQgYmUKPiBkb25lIHdpdGggaXQgdGhlbj8gTm8gUkNVIHRyaWNrcy4KCgpUaGlzIGlzIGhvdyBJ IHdhbnQgdG8gZ28gd2l0aCBSRkMgYW5kIFYxLiBCdXQgSSBlbmQgdXAgd2l0aCBkZWFkbG9jayAK YmV0d2VlbiB2cSBsb2NrcyBhbmQgc29tZSBNTSBpbnRlcm5hbCBsb2Nrcy4gU28gSSBkZWNpZGUg dG8gdXNlIFJDVSAKd2hpY2ggaXMgMTAwJSB1bmRlciB0aGUgY29udHJvbCBvZiB2aG9zdC4KClRo YW5rcwoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxp bnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFk ZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4 LWFybS1rZXJuZWwK