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[79.181.91.42]) by smtp.gmail.com with ESMTPSA id z1sm27810714qke.122.2019.07.29.01.59.30 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Mon, 29 Jul 2019 01:59:36 -0700 (PDT) Date: Mon, 29 Jul 2019 04:59:27 -0400 From: "Michael S. Tsirkin" To: Jason Wang Subject: Re: WARNING in __mmdrop Message-ID: <20190729045127-mutt-send-email-mst@kernel.org> References: <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> <20190726094756-mutt-send-email-mst@kernel.org> <0792ee09-b4b7-673c-2251-e5e0ce0fbe32@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <0792ee09-b4b7-673c-2251-e5e0ce0fbe32@redhat.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190729_015938_996706_03737890 X-CRM114-Status: GOOD ( 18.56 ) 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-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gTW9uLCBKdWwgMjksIDIwMTkgYXQgMDE6NTQ6NDlQTSArMDgwMCwgSmFzb24gV2FuZyB3cm90 ZToKPiAKPiBPbiAyMDE5LzcvMjYg5LiL5Y2IOTo0OSwgTWljaGFlbCBTLiBUc2lya2luIHdyb3Rl Ogo+ID4gPiA+IE9rLCBsZXQgbWUgcmV0cnkgaWYgbmVjZXNzYXJ5IChidXQgSSBkbyByZW1lbWJl ciBJIGVuZCB1cCB3aXRoIGRlYWRsb2Nrcwo+ID4gPiA+IGxhc3QgdHJ5KS4KPiA+ID4gT2ssIEkg cGxheSBhIGxpdHRsZSB3aXRoIHRoaXMuIEFuZCBpdCB3b3JrcyBzbyBmYXIuIFdpbGwgZG8gbW9y ZSB0ZXN0aW5nCj4gPiA+IHRvbW9ycm93Lgo+ID4gPiAKPiA+ID4gT25lIHJlYXNvbiBjb3VsZCBi ZSBJIHN3aXRjaCB0byB1c2UgZ2V0X3VzZXJfcGFnZXNfZmFzdCgpIHRvCj4gPiA+IF9fZ2V0X3Vz ZXJfcGFnZXNfZmFzdCgpIHdoaWNoIGRvZXNuJ3QgbmVlZCBtbWFwX3NlbS4KPiA+ID4gCj4gPiA+ IFRoYW5rcwo+ID4gT0sgdGhhdCBzb3VuZHMgZ29vZC4gSWYgd2UgYWxzbyBzZXQgYSBmbGFnIHRv IG1ha2UKPiA+IHZob3N0X2V4Y2VlZHNfd2VpZ2h0IGV4aXQsIHRoZW4gSSB0aGluayBpdCB3aWxs IGJlIGFsbCBnb29kLgo+IAo+IAo+IEFmdGVyIHNvbWUgZXhwZXJpbWVudHMsIEkgY2FtZSB1cCB0 d28gbWV0aG9kczoKPiAKPiAxKSBzd2l0Y2ggdG8gdXNlIHZxLT5tdXRleCwgdGhlbiB3ZSBtdXN0 IHRha2UgdGhlIHZxIGxvY2sgZHVyaW5nIHJhbmdlCj4gY2hlY2tpbmcgKGJ1dCBJIGRvbid0IHNl ZSBvYnZpb3VzIHNsb3dkb3duIGZvciAxNnZjcHVzICsgMTZxdWV1ZXMpLiBTZXR0aW5nCj4gZmxh Z3MgZHVyaW5nIHdlaWdodCBjaGVjayBzaG91bGQgd29yayBidXQgaXQgc3RpbGwgY2FuJ3QgYWRk cmVzcyB0aGUgd29yc3QKPiBjYXNlOiB3YWl0IGZvciB0aGUgcGFnZSB0byBiZSBzd2FwcGVkIGlu LiBJcyB0aGlzIGFjY2VwdGFibGU/Cj4gCj4gMikgdXNpbmcgY3VycmVudCBSQ1UgYnV0IHJlcGxh Y2Ugc3luY2hyb25pemVfcmN1KCkgd2l0aCB2aG9zdF93b3JrX2ZsdXNoKCkuCj4gVGhlIHdvcnN0 IGNhc2UgaXMgdGhlIHNhbWUgYXMgMSkgYnV0IHdlIGNhbiBjaGVjayByYW5nZSB3aXRob3V0IGhv bGRpbmcgYW55Cj4gbG9ja3MuCj4gCj4gV2hpY2ggb25lIGRpZCB5b3UgcHJlZmVyPwo+IAo+IFRo YW5rcwoKSSB3b3VsZCByYXRoZXIgd2Ugc3RhcnQgd2l0aCAxIGFuZCBzd2l0Y2ggdG8gMiBhZnRl ciB3ZQpjYW4gc2hvdyBzb21lIGdhaW4uCgpCdXQgdGhlIHdvcnN0IGNhc2UgbmVlZHMgdG8gYmUg YWRkcmVzc2VkLiAgSG93IGFib3V0IHNlbmRpbmcgYSBzaWduYWwgdG8KdGhlIHZob3N0IHRocmVh ZD8gIFdlIHdpbGwgbmVlZCB0byBmaXggdXAgZXJyb3IgaGFuZGxpbmcgKEkgdGhpbmsgdGhhdAph dCB0aGUgbW9tZW50IGl0IHdpbGwgZXJyb3Igb3V0IGluIHRoYXQgY2FzZSwgaGFuZGxpbmcgdGhp cyBhcyBFRkFVTFQgLQphbmQgd2UgZG9uJ3Qgd2FudCB0byBkcm9wIHBhY2tldHMgaWYgd2UgY2Fu IGhlbHAgaXQsIGFuZCBzdXJlbHkgbm90CmVudGVyIGFueSBlcnJvciBzdGF0ZXMuICBJbiBwYXJ0 aWN1bGFyIGl0IG1pZ2h0IGJlIGVzcGVjaWFsbHkgdHJpY2t5IGlmCndlIHdyb3RlIGludG8gdXNl cnNwYWNlIG1lbW9yeSBhbmQgYXJlIG5vdyB0cnlpbmcgdG8gbG9nIHRoZSB3cml0ZS4KSSBndWVz cyB3ZSBjYW4gZGlzYWJsZSB0aGUgb3B0aW1pemF0aW9uIGlmIGxvZyBpcyBlbmFibGVkPykuCgot LSAKTVNUCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwps aW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxpc3RzLmluZnJh ZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51 eC1hcm0ta2VybmVsCg==