From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sean Paul Subject: Re: [PATCH v3 06/24] drm/rockchip: dw-mipi-dsi: avoid out-of-bounds read on tx_buf Date: Mon, 30 Jan 2017 15:09:55 -0500 Message-ID: <20170130200955.GL20076@art_vandelay> References: <20170129132444.25251-1-john@metanate.com> <20170129132444.25251-7-john@metanate.com> <20170130180146.GG20076@art_vandelay> <20170130181636.1bc81e86.john@metanate.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail-qk0-x230.google.com (mail-qk0-x230.google.com [IPv6:2607:f8b0:400d:c09::230]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2C5A86E1DA for ; Mon, 30 Jan 2017 20:09:58 +0000 (UTC) Received: by mail-qk0-x230.google.com with SMTP id 11so141634774qkl.3 for ; Mon, 30 Jan 2017 12:09:58 -0800 (PST) Content-Disposition: inline In-Reply-To: <20170130181636.1bc81e86.john@metanate.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: John Keeping Cc: Chris Zhong , linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org List-Id: dri-devel@lists.freedesktop.org T24gTW9uLCBKYW4gMzAsIDIwMTcgYXQgMDY6MTY6MzZQTSArMDAwMCwgSm9obiBLZWVwaW5nIHdy b3RlOgo+IE9uIE1vbiwgMzAgSmFuIDIwMTcgMTM6MDE6NDYgLTA1MDAsIFNlYW4gUGF1bCB3cm90 ZToKPiAKPiA+IE9uIFN1biwgSmFuIDI5LCAyMDE3IGF0IDAxOjI0OjI2UE0gKzAwMDAsIEpvaG4g S2VlcGluZyB3cm90ZToKPiA+ID4gQXMgYSBzaWRlLWVmZmVjdCBvZiB0aGlzLCBlbmNvZGUgdGhl IGVuZGlhbm5lc3MgZXhwbGljaXRseSByYXRoZXIgdGhhbgo+ID4gPiBjYXN0aW5nIGEgdTE2Lgo+ ID4gPiAKPiA+ID4gU2lnbmVkLW9mZi1ieTogSm9obiBLZWVwaW5nIDxqb2huQG1ldGFuYXRlLmNv bT4KPiA+ID4gUmV2aWV3ZWQtYnk6IENocmlzIFpob25nIDx6eXdAcm9jay1jaGlwcy5jb20+Cj4g PiA+IC0tLQo+ID4gPiB2MzoKPiA+ID4gLSBBZGQgQ2hyaXMnIFJldmlld2VkLWJ5Cj4gPiA+IFVu Y2hhbmdlZCBpbiB2Mgo+ID4gPiAKPiA+ID4gIGRyaXZlcnMvZ3B1L2RybS9yb2NrY2hpcC9kdy1t aXBpLWRzaS5jIHwgOSArKysrKysrLS0KPiA+ID4gIDEgZmlsZSBjaGFuZ2VkLCA3IGluc2VydGlv bnMoKyksIDIgZGVsZXRpb25zKC0pCj4gPiA+IAo+ID4gPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9n cHUvZHJtL3JvY2tjaGlwL2R3LW1pcGktZHNpLmMgYi9kcml2ZXJzL2dwdS9kcm0vcm9ja2NoaXAv ZHctbWlwaS1kc2kuYwo+ID4gPiBpbmRleCA0YmUxZmYzYTQyYmIuLjJlNmFkNDU5MWViZiAxMDA2 NDQKPiA+ID4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL3JvY2tjaGlwL2R3LW1pcGktZHNpLmMKPiA+ ID4gKysrIGIvZHJpdmVycy9ncHUvZHJtL3JvY2tjaGlwL2R3LW1pcGktZHNpLmMKPiA+ID4gQEAg LTU3Miw4ICs1NzIsMTMgQEAgc3RhdGljIGludCBkd19taXBpX2RzaV9nZW5fcGt0X2hkcl93cml0 ZShzdHJ1Y3QgZHdfbWlwaV9kc2kgKmRzaSwgdTMyIGhkcl92YWwpCj4gPiA+ICBzdGF0aWMgaW50 IGR3X21pcGlfZHNpX2Rjc19zaG9ydF93cml0ZShzdHJ1Y3QgZHdfbWlwaV9kc2kgKmRzaSwKPiA+ ID4gIAkJCQkgICAgICAgY29uc3Qgc3RydWN0IG1pcGlfZHNpX21zZyAqbXNnKQo+ID4gPiAgewo+ ID4gPiAtCWNvbnN0IHUxNiAqdHhfYnVmID0gbXNnLT50eF9idWY7Cj4gPiA+IC0JdTMyIHZhbCA9 IEdFTl9IREFUQSgqdHhfYnVmKSB8IEdFTl9IVFlQRShtc2ctPnR5cGUpOwo+ID4gPiArCWNvbnN0 IHU4ICp0eF9idWYgPSBtc2ctPnR4X2J1ZjsKPiA+ID4gKwl1MzIgdmFsID0gR0VOX0hUWVBFKG1z Zy0+dHlwZSk7Cj4gPiA+ICsKPiA+ID4gKwlpZiAobXNnLT50eF9sZW4gPiAwKQo+ID4gPiArCQl2 YWwgfD0gR0VOX0hEQVRBKHR4X2J1ZlswXSk7Cj4gPiA+ICsJaWYgKG1zZy0+dHhfbGVuID4gMSkK PiA+ID4gKwkJdmFsIHw9IEdFTl9IREFUQSh0eF9idWZbMV0gPDwgOCk7ICAKPiA+IAo+ID4gWW91 IHNob3VsZCBwcm9iYWJseSB1cGRhdGUgdGhlIG1hc2sgaW5zaWRlIEdFTl9IREFUQSB0byBtYXNr IG9mZiA4IGJpdHMgaW5zdGVhZCBvZgo+ID4gMTYuCj4gCj4gV29uJ3QgdGhhdCBtYXNrIG9mZiB0 aGUgZGF0YSB3cml0dGVuIGJ5ICJ0eF9idWZbMV0gPDwgOCI/CgpJIHdvdWxkIG1vdmUgdGhlIHNo aWZ0IG91dHNpZGUgdGhlIG1hc2ssIGllOgoKdmFsIHw9IEdFTl9IREFUQSh0eF9idWZbMV0pIDw8 IDg7CgpTZWFuCgo+IF9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fCj4gZHJpLWRldmVsIG1haWxpbmcgbGlzdAo+IGRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3Rv cC5vcmcKPiBodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2Ry aS1kZXZlbAoKLS0gClNlYW4gUGF1bCwgU29mdHdhcmUgRW5naW5lZXIsIEdvb2dsZSAvIENocm9t aXVtIE9TCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRy aS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRw czovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbAo=