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Tsirkin" To: Jason Wang Subject: Re: WARNING in __mmdrop Message-ID: <20190726094756-mutt-send-email-mst@kernel.org> References: <55e8930c-2695-365f-a07b-3ad169654d28@redhat.com> <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> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190726_064949_660978_CDC2F7DD X-CRM114-Status: GOOD ( 24.14 ) 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 T24gRnJpLCBKdWwgMjYsIDIwMTkgYXQgMDk6MzY6MThQTSArMDgwMCwgSmFzb24gV2FuZyB3cm90 ZToKPiAKPiBPbiAyMDE5LzcvMjYg5LiL5Y2IODo1MywgSmFzb24gV2FuZyB3cm90ZToKPiA+IAo+ ID4gT24gMjAxOS83LzI2IOS4i+WNiDg6MzgsIE1pY2hhZWwgUy4gVHNpcmtpbiB3cm90ZToKPiA+ ID4gT24gRnJpLCBKdWwgMjYsIDIwMTkgYXQgMDg6MDA6NThQTSArMDgwMCwgSmFzb24gV2FuZyB3 cm90ZToKPiA+ID4gPiBPbiAyMDE5LzcvMjYg5LiL5Y2INzo0OSwgTWljaGFlbCBTLiBUc2lya2lu IHdyb3RlOgo+ID4gPiA+ID4gT24gVGh1LCBKdWwgMjUsIDIwMTkgYXQgMTA6MjU6MjVQTSArMDgw MCwgSmFzb24gV2FuZyB3cm90ZToKPiA+ID4gPiA+ID4gT24gMjAxOS83LzI1IOS4i+WNiDk6MjYs IE1pY2hhZWwgUy4gVHNpcmtpbiB3cm90ZToKPiA+ID4gPiA+ID4gPiA+IEV4YWN0bHksIGFuZCB0 aGF0J3MgdGhlIHJlYXNvbiBhY3R1YWxseSBJIHVzZQo+ID4gPiA+ID4gPiA+ID4gc3luY2hyb25p emVfcmN1KCkgdGhlcmUuCj4gPiA+ID4gPiA+ID4gPiAKPiA+ID4gPiA+ID4gPiA+IFNvIHRoZSBj b25jZXJuIGlzIHN0aWxsIHRoZSBwb3NzaWJsZSBzeW5jaHJvbml6ZV9leHBlZGl0ZWQoKT8KPiA+ ID4gPiA+ID4gPiBJIHRoaW5rIHN5bmNocm9uaXplX3NyY3VfZXhwZWRpdGVkLgo+ID4gPiA+ID4g PiA+IAo+ID4gPiA+ID4gPiA+IHN5bmNocm9uaXplX2V4cGVkaXRlZCBzZW5kcyBsb3RzIG9mIElQ SSBhbmQgaXMgYmFkIGZvciByZWFsdGltZSBWTXMuCj4gPiA+ID4gPiA+ID4gCj4gPiA+ID4gPiA+ ID4gPiBDYW4gSSBkbyB0aGlzCj4gPiA+ID4gPiA+ID4gPiBvbiB0aHJvdWdoIGFub3RoZXIgc2Vy aWVzIG9uIHRvcCBvZiB0aGUgaW5jb21pbmcgVjI/Cj4gPiA+ID4gPiA+ID4gPiAKPiA+ID4gPiA+ ID4gPiA+IFRoYW5rcwo+ID4gPiA+ID4gPiA+ID4gCj4gPiA+ID4gPiA+ID4gVGhlIHF1ZXN0aW9u IGlzIHRoaXM6IGlzIHRoaXMgc3RpbGwgYSBnYWluIGlmIHdlIHN3aXRjaCB0byB0aGUKPiA+ID4g PiA+ID4gPiBtb3JlIGV4cGVuc2l2ZSBzcmN1PyBJZiB5ZXMgdGhlbiB3ZSBjYW4ga2VlcCB0aGUg ZmVhdHVyZSBvbiwKPiA+ID4gPiA+ID4gSSB0aGluayB3ZSBvbmx5IGNhcmUgYWJvdXQgdGhlIGNv c3Qgb24gc3JjdV9yZWFkX2xvY2soKQo+ID4gPiA+ID4gPiB3aGljaCBsb29rcyBwcmV0dHkKPiA+ ID4gPiA+ID4gdGlueSBmb3JtIG15IHBvaW50IG9mIHZpZXcuIFdoaWNoIGlzIGJhc2ljYWxseSBh Cj4gPiA+ID4gPiA+IFJFQURfT05DRSgpICsgV1JJVEVfT05DRSgpLgo+ID4gPiA+ID4gPiAKPiA+ ID4gPiA+ID4gT2YgY291cnNlIEkgY2FuIGJlbmNobWFyayB0byBzZWUgdGhlIGRpZmZlcmVuY2Uu Cj4gPiA+ID4gPiA+IAo+ID4gPiA+ID4gPiAKPiA+ID4gPiA+ID4gPiBpZiBub3Qgd2UnbGwgcHV0 IGl0IG9mZiB1bnRpbCBuZXh0IHJlbGVhc2UgYW5kIHRoaW5rCj4gPiA+ID4gPiA+ID4gb2YgYmV0 dGVyIHNvbHV0aW9ucy4gcmN1LT5zcmN1IGlzIGp1c3QgYSBmaW5kIGFuZCByZXBsYWNlLAo+ID4g PiA+ID4gPiA+IGRvbid0IHNlZSB3aHkgd2UgbmVlZCB0byBkZWZlciB0aGF0LiBjYW4gYmUgYSBz ZXBhcmF0ZSBwYXRjaAo+ID4gPiA+ID4gPiA+IGZvciBzdXJlLCBidXQgd2UgbmVlZCB0byBrbm93 IGhvdyB3ZWxsIGl0IHdvcmtzLgo+ID4gPiA+ID4gPiBJIHRoaW5rIEkgZ2V0IGhlcmUsIGxldCBt ZSB0cnkgdG8gZG8gdGhhdCBpbiBWMiBhbmQKPiA+ID4gPiA+ID4gbGV0J3Mgc2VlIHRoZSBudW1i ZXJzLgo+ID4gPiA+ID4gPiAKPiA+ID4gPiA+ID4gVGhhbmtzCj4gPiA+ID4gCj4gPiA+ID4gSXQg bG9va3MgdG8gbWUgZm9yIHRyZWUgcmN1LCBpdHMgc3JjdV9yZWFkX2xvY2soKSBoYXZlIGEgbWIo KQo+ID4gPiA+IHdoaWNoIGlzIHRvbwo+ID4gPiA+IGV4cGVuc2l2ZSBmb3IgdXMuCj4gPiA+IEkg d2lsbCB0cnkgdG8gcG9uZGVyIHVzaW5nIHZxIGxvY2sgaW4gc29tZSB3YXkuCj4gPiA+IE1heWJl IHdpdGggdHJ5bG9jayBzb21laG93IC4uLgo+ID4gCj4gPiAKPiA+IE9rLCBsZXQgbWUgcmV0cnkg aWYgbmVjZXNzYXJ5IChidXQgSSBkbyByZW1lbWJlciBJIGVuZCB1cCB3aXRoIGRlYWRsb2Nrcwo+ ID4gbGFzdCB0cnkpLgo+IAo+IAo+IE9rLCBJIHBsYXkgYSBsaXR0bGUgd2l0aCB0aGlzLiBBbmQg aXQgd29ya3Mgc28gZmFyLiBXaWxsIGRvIG1vcmUgdGVzdGluZwo+IHRvbW9ycm93Lgo+IAo+IE9u ZSByZWFzb24gY291bGQgYmUgSSBzd2l0Y2ggdG8gdXNlIGdldF91c2VyX3BhZ2VzX2Zhc3QoKSB0 bwo+IF9fZ2V0X3VzZXJfcGFnZXNfZmFzdCgpIHdoaWNoIGRvZXNuJ3QgbmVlZCBtbWFwX3NlbS4K PiAKPiBUaGFua3MKCk9LIHRoYXQgc291bmRzIGdvb2QuIElmIHdlIGFsc28gc2V0IGEgZmxhZyB0 byBtYWtlCnZob3N0X2V4Y2VlZHNfd2VpZ2h0IGV4aXQsIHRoZW4gSSB0aGluayBpdCB3aWxsIGJl IGFsbCBnb29kLgoKLS0gCk1TVAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX18KbGludXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5l bEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4v bGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo=