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[79.181.91.42]) by smtp.gmail.com with ESMTPSA id j10sm70533109wrd.26.2019.07.22.22.02.41 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Mon, 22 Jul 2019 22:02:43 -0700 (PDT) Date: Tue, 23 Jul 2019 01:02:39 -0400 From: "Michael S. Tsirkin" To: Jason Wang Subject: Re: WARNING in __mmdrop Message-ID: <20190723010156-mutt-send-email-mst@kernel.org> References: <0000000000008dd6bb058e006938@google.com> <000000000000964b0d058e1a0483@google.com> <20190721044615-mutt-send-email-mst@kernel.org> <75c43998-3a1c-676f-99ff-3d04663c3fcc@redhat.com> <20190722035657-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-20190722_220246_537225_DC6A5851 X-CRM114-Status: GOOD ( 19.73 ) 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 T24gVHVlLCBKdWwgMjMsIDIwMTkgYXQgMTE6NTU6MjhBTSArMDgwMCwgSmFzb24gV2FuZyB3cm90 ZToKPiAKPiBPbiAyMDE5LzcvMjIg5LiL5Y2INDowMiwgTWljaGFlbCBTLiBUc2lya2luIHdyb3Rl Ogo+ID4gT24gTW9uLCBKdWwgMjIsIDIwMTkgYXQgMDE6MjE6NTlQTSArMDgwMCwgSmFzb24gV2Fu ZyB3cm90ZToKPiA+ID4gT24gMjAxOS83LzIxIOS4i+WNiDY6MDIsIE1pY2hhZWwgUy4gVHNpcmtp biB3cm90ZToKPiA+ID4gPiBPbiBTYXQsIEp1bCAyMCwgMjAxOSBhdCAwMzowODowMEFNIC0wNzAw LCBzeXpib3Qgd3JvdGU6Cj4gPiA+ID4gPiBzeXpib3QgaGFzIGJpc2VjdGVkIHRoaXMgYnVnIHRv Ogo+ID4gPiA+ID4gCj4gPiA+ID4gPiBjb21taXQgN2Y0NjYwMzJkYzllNWE2MTIxN2YyMmVhMzRi MmRmOTMyNzg2YmJmYwo+ID4gPiA+ID4gQXV0aG9yOiBKYXNvbiBXYW5nIDxqYXNvd2FuZ0ByZWRo YXQuY29tPgo+ID4gPiA+ID4gRGF0ZTogICBGcmkgTWF5IDI0IDA4OjEyOjE4IDIwMTkgKzAwMDAK PiA+ID4gPiA+IAo+ID4gPiA+ID4gICAgICAgdmhvc3Q6IGFjY2VzcyB2cSBtZXRhZGF0YSB0aHJv dWdoIGtlcm5lbCB2aXJ0dWFsIGFkZHJlc3MKPiA+ID4gPiA+IAo+ID4gPiA+ID4gYmlzZWN0aW9u IGxvZzogIGh0dHBzOi8vc3l6a2FsbGVyLmFwcHNwb3QuY29tL3gvYmlzZWN0LnR4dD94PTE0OWE4 YTIwNjAwMDAwCj4gPiA+ID4gPiBzdGFydCBjb21taXQ6ICAgNmQyMWE0MWIgQWRkIGxpbnV4LW5l eHQgc3BlY2lmaWMgZmlsZXMgZm9yIDIwMTkwNzE4Cj4gPiA+ID4gPiBnaXQgdHJlZTogICAgICAg bGludXgtbmV4dAo+ID4gPiA+ID4gZmluYWwgY3Jhc2g6ICAgIGh0dHBzOi8vc3l6a2FsbGVyLmFw cHNwb3QuY29tL3gvcmVwb3J0LnR4dD94PTE2OWE4YTIwNjAwMDAwCj4gPiA+ID4gPiBjb25zb2xl IG91dHB1dDogaHR0cHM6Ly9zeXprYWxsZXIuYXBwc3BvdC5jb20veC9sb2cudHh0P3g9MTI5YThh MjA2MDAwMDAKPiA+ID4gPiA+IGtlcm5lbCBjb25maWc6ICBodHRwczovL3N5emthbGxlci5hcHBz cG90LmNvbS94Ly5jb25maWc/eD0zNDMwYTE1MWUxNDUyMzMxCj4gPiA+ID4gPiBkYXNoYm9hcmQg bGluazogaHR0cHM6Ly9zeXprYWxsZXIuYXBwc3BvdC5jb20vYnVnP2V4dGlkPWU1ODExMmQ3MWY3 NzExM2RkYjdiCj4gPiA+ID4gPiBzeXogcmVwcm86ICAgICAgaHR0cHM6Ly9zeXprYWxsZXIuYXBw c3BvdC5jb20veC9yZXByby5zeXo/eD0xMDEzOWU2ODYwMDAwMAo+ID4gPiA+ID4gCj4gPiA+ID4g PiBSZXBvcnRlZC1ieTogc3l6Ym90K2U1ODExMmQ3MWY3NzExM2RkYjdiQHN5emthbGxlci5hcHBz cG90bWFpbC5jb20KPiA+ID4gPiA+IEZpeGVzOiA3ZjQ2NjAzMmRjOWUgKCJ2aG9zdDogYWNjZXNz IHZxIG1ldGFkYXRhIHRocm91Z2gga2VybmVsIHZpcnR1YWwKPiA+ID4gPiA+IGFkZHJlc3MiKQo+ ID4gPiA+ID4gCj4gPiA+ID4gPiBGb3IgaW5mb3JtYXRpb24gYWJvdXQgYmlzZWN0aW9uIHByb2Nl c3Mgc2VlOiBodHRwczovL2dvby5nbC90cHNtRUojYmlzZWN0aW9uCj4gPiA+ID4gT0sgSSBwb2tl ZCBhdCB0aGlzIGZvciBhIGJpdCwgSSBzZWUgc2V2ZXJhbCB0aGluZ3MgdGhhdAo+ID4gPiA+IHdl IG5lZWQgdG8gZml4LCB0aG91Z2ggSSdtIG5vdCB5ZXQgc3VyZSBpdCdzIHRoZSByZWFzb24gZm9y Cj4gPiA+ID4gdGhlIGZhaWx1cmVzOgo+ID4gPiA+IAo+ID4gPiA+IAo+ID4gPiA+IDEuIG1tdV9u b3RpZmllcl9yZWdpc3RlciBzaG91bGRuJ3QgYmUgY2FsbGVkIGZyb20gdmhvc3RfdnJpbmdfc2V0 X251bV9hZGRyCj4gPiA+ID4gICAgICBUaGF0J3MganVzdCBhIGJhZCBoYWNrLAo+ID4gPiAKPiA+ ID4gVGhpcyBpcyB1c2VkIHRvIGF2b2lkIGhvbGRpbmcgbG9jayB3aGVuIGNoZWNraW5nIHdoZXRo ZXIgdGhlIGFkZHJlc3NlcyBhcmUKPiA+ID4gb3ZlcmxhcHBlZC4gT3RoZXJ3aXNlIHdlIG5lZWQg dG8gdGFrZSBzcGlubG9jayBmb3IgZWFjaCBpbnZhbGlkYXRpb24gcmVxdWVzdAo+ID4gPiBldmVu IGlmIGl0IHdhcyB0aGUgdmEgcmFuZ2UgdGhhdCBpcyBub3QgaW50ZXJlc3RlZCBmb3IgdXMuIFRo aXMgd2lsbCBiZSB2ZXJ5Cj4gPiA+IHNsb3cgZS5nIGR1cmluZyBndWVzdCBib290Lgo+ID4gS1ZN IHNlZW1zIHRvIGRvIGV4YWN0bHkgdGhhdC4KPiA+IEkgdHJpZWQgYW5kIGd1ZXN0IGRvZXMgbm90 IHNlZW0gdG8gYm9vdCBhbnkgc2xvd2VyLgo+ID4gRG8geW91IG9ic2VydmUgYW55IHNsb3dkb3du Pwo+IAo+IAo+IFllcyBJIGRvLgo+IAo+IAo+ID4gCj4gPiBOb3cgSSB0b29rIGEgaGFyZCBsb29r IGF0IHRoZSB1YWRkciBoYWNrZXJ5IGl0IHJlYWxseSBtYWtlcwo+ID4gbWUgbmVydmlvdXMuIFNv IEkgdGhpbmsgZm9yIHRoaXMgcmVsZWFzZSB3ZSB3YW50IHNvbWV0aGluZwo+ID4gc2FmZSwgYW5k IG9wdGltaXphdGlvbnMgb24gdG9wLiBBcyBhbiBhbHRlcm5hdGl2ZSByZXZlcnQgdGhlCj4gPiBv cHRpbWl6YXRpb24gYW5kIHRyeSBhZ2FpbiBmb3IgbmV4dCBtZXJnZSB3aW5kb3cuCj4gCj4gCj4g V2lsbCBwb3N0IGEgc2VyaWVzIG9mIGZpeGVzLCBsZXQgbWUga25vdyBpZiB5b3UncmUgb2sgd2l0 aCB0aGF0Lgo+IAo+IFRoYW5rcwoKSSdkIHByZWZlciB5b3UgdG8gdGFrZSBhIGhhcmQgbG9vayBh dCB0aGUgcGF0Y2ggSSBwb3N0ZWQKd2hpY2ggbWFrZXMgY29kZSBjbGVhbmVyLCBhbmQgYWQgb3B0 aW1pemF0aW9ucyBvbiB0b3AuCkJ1dCBvdGhlciB3YXlzIGNvdWxkIGJlIG9rIHRvby4KCj4gCj4g PiAKPiA+IAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18K bGludXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZy YWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGlu dXgtYXJtLWtlcm5lbAo=