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[109.67.54.78]) by smtp.gmail.com with ESMTPSA id i11sm33187631wro.85.2020.11.18.00.59.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Nov 2020 00:59:59 -0800 (PST) Date: Wed, 18 Nov 2020 03:59:55 -0500 From: "Michael S. Tsirkin" To: Jason Wang Subject: Re: [PATCH net] vhost_vdpa: Return -EFUALT if copy_from_user() fails Message-ID: <20201118035912-mutt-send-email-mst@kernel.org> References: <20201023120853.GI282278@mwanda> <20201023113326-mutt-send-email-mst@kernel.org> <4485cc8d-ac69-c725-8493-eda120e29c41@redhat.com> MIME-Version: 1.0 In-Reply-To: Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=mst@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Disposition: inline Cc: kvm@vger.kernel.org, netdev@vger.kernel.org, kernel-janitors@vger.kernel.org, virtualization@lists.linux-foundation.org, kuba@kernel.org, Dan Carpenter X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" T24gV2VkLCBOb3YgMTgsIDIwMjAgYXQgMDI6MDg6MTdQTSArMDgwMCwgSmFzb24gV2FuZyB3cm90 ZToKPiAKPiBPbiAyMDIwLzEwLzI2IOS4iuWNiDEwOjU5LCBKYXNvbiBXYW5nIHdyb3RlOgo+ID4g Cj4gPiBPbiAyMDIwLzEwLzIzIOS4i+WNiDExOjM0LCBNaWNoYWVsIFMuIFRzaXJraW4gd3JvdGU6 Cj4gPiA+IE9uIEZyaSwgT2N0IDIzLCAyMDIwIGF0IDAzOjA4OjUzUE0gKzAzMDAsIERhbiBDYXJw ZW50ZXIgd3JvdGU6Cj4gPiA+ID4gVGhlIGNvcHlfdG8vZnJvbV91c2VyKCkgZnVuY3Rpb25zIHJl dHVybiB0aGUgbnVtYmVyIG9mIGJ5dGVzIHdoaWNoIHdlCj4gPiA+ID4gd2VyZW4ndCBhYmxlIHRv IGNvcHkgYnV0IHRoZSBpb2N0bCBzaG91bGQgcmV0dXJuIC1FRkFVTFQgaWYgdGhleSBmYWlsLgo+ ID4gPiA+IAo+ID4gPiA+IEZpeGVzOiBhMTI3YzViYmI2YTggKCJ2aG9zdC12ZHBhOiBmaXggYmFj a2VuZCBmZWF0dXJlIGlvY3RscyIpCj4gPiA+ID4gU2lnbmVkLW9mZi1ieTogRGFuIENhcnBlbnRl ciA8ZGFuLmNhcnBlbnRlckBvcmFjbGUuY29tPgo+ID4gPiBBY2tlZC1ieTogTWljaGFlbCBTLiBU c2lya2luIDxtc3RAcmVkaGF0LmNvbT4KPiA+ID4gTmVlZGVkIGZvciBzdGFibGUgSSBndWVzcy4K PiA+IAo+ID4gCj4gPiBBZ3JlZS4KPiA+IAo+ID4gQWNrZWQtYnk6IEphc29uIFdhbmcgPGphc293 YW5nQHJlZGhhdC5jb20+Cj4gCj4gCj4gSGkgTWljaGFlbC4KPiAKPiBJIGRvbid0IHNlZSB0aGlz IGluIHlvdXIgdHJlZSwgcGxlYXNlIGNvbnNpZGVyIHRvIG1lcmdlLgo+IAo+IFRoYW5rcwo+IAoK SSBkbyBzZWUgaXQgdGhlcmU6Cgpjb21taXQgNzkyMjQ2MGUzM2M4MWY0MWUwZDI0MjE0MTcyMjhi MzJlNmZkYmU5NApBdXRob3I6IERhbiBDYXJwZW50ZXIgPGRhbi5jYXJwZW50ZXJAb3JhY2xlLmNv bT4KRGF0ZTogICBGcmkgT2N0IDIzIDE1OjA4OjUzIDIwMjAgKzAzMDAKCiAgICB2aG9zdF92ZHBh OiBSZXR1cm4gLUVGQVVMVCBpZiBjb3B5X2Zyb21fdXNlcigpIGZhaWxzCiAgICAKdGhlIHJlYXNv biB5b3UgY2FuJ3QgZmluZCBpdCBpcyBwcm9iYWJseSBiZWNhdXNlIEkgZml4ZWQgdXAKYSB0eXBv IGluIHRoZSBzdWJqZWN0LgoKCi0tIApNU1QKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fClZpcnR1YWxpemF0aW9uIG1haWxpbmcgbGlzdApWaXJ0dWFsaXph dGlvbkBsaXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91bmRh dGlvbi5vcmcvbWFpbG1hbi9saXN0aW5mby92aXJ0dWFsaXphdGlvbg==