From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lionel Landwerlin Subject: Re: [PATCH] dma-buf: fix stack corruption in dma_fence_chain_release Date: Mon, 5 Aug 2019 11:23:26 +0300 Message-ID: References: <20190805073657.1389-1-christian.koenig@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTPS id 907B089D4F for ; Mon, 5 Aug 2019 08:25:29 +0000 (UTC) In-Reply-To: <20190805073657.1389-1-christian.koenig@amd.com> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: =?UTF-8?Q?Christian_K=c3=b6nig?= , dri-devel@lists.freedesktop.org, david1.zhou@amd.com List-Id: dri-devel@lists.freedesktop.org T24gMDUvMDgvMjAxOSAxMDozNiwgQ2hyaXN0aWFuIEvDtm5pZyB3cm90ZToKPiBXZSBjYW4ndCBm cmVlIHVwIHRoZSBjaGFpbiB1c2luZyByZWN1cnNpb24gb3Igd2UgcnVuIGludG8gYSBzdGFjayBv dmVyZmxvdy4KPgo+IE1hbnVhbGx5IGZyZWUgdXAgdGhlIGRhbmdsaW5nIGNoYWluIG5vZGVzIHRv IGF2b2lkIHJlY3Vyc2lvbi4KPgo+IFNpZ25lZC1vZmYtYnk6IENocmlzdGlhbiBLw7ZuaWcgPGNo cmlzdGlhbi5rb2VuaWdAYW1kLmNvbT4KCgpUaGF0IGRlZmluaXRlbHkgbWFrZXMgc2Vuc2UgdG8g bWUsIGJ1dCBJJ20gbm90IGFuIGV4cGVydCBpbiBSQ1UgZm9vIDovCgoKQWNrZWQtYnk6IExpb25l bCBMYW5kd2VybGluIDxsaW9uZWwuZy5sYW5kd2VybGluQGludGVsLmNvbT4KCgpJIGd1ZXNzIHRo aXMgZGVzZXJ2ZXMgYQoKCkZpeGVzOiA3YmY2MGM1MmUwICgiZG1hLWJ1ZjogYWRkIG5ldyBkbWFf ZmVuY2VfY2hhaW4gY29udGFpbmVyIHY3IikKCgo+IC0tLQo+ICAgZHJpdmVycy9kbWEtYnVmL2Rt YS1mZW5jZS1jaGFpbi5jIHwgMjQgKysrKysrKysrKysrKysrKysrKysrKystCj4gICAxIGZpbGUg Y2hhbmdlZCwgMjMgaW5zZXJ0aW9ucygrKSwgMSBkZWxldGlvbigtKQo+Cj4gZGlmZiAtLWdpdCBh L2RyaXZlcnMvZG1hLWJ1Zi9kbWEtZmVuY2UtY2hhaW4uYyBiL2RyaXZlcnMvZG1hLWJ1Zi9kbWEt ZmVuY2UtY2hhaW4uYwo+IGluZGV4IGI1MDg5ZjY0YmUyYS4uNDRhNzQxNjc3ZDI1IDEwMDY0NAo+ IC0tLSBhL2RyaXZlcnMvZG1hLWJ1Zi9kbWEtZmVuY2UtY2hhaW4uYwo+ICsrKyBiL2RyaXZlcnMv ZG1hLWJ1Zi9kbWEtZmVuY2UtY2hhaW4uYwo+IEBAIC0xNzgsOCArMTc4LDMwIEBAIHN0YXRpYyBi b29sIGRtYV9mZW5jZV9jaGFpbl9zaWduYWxlZChzdHJ1Y3QgZG1hX2ZlbmNlICpmZW5jZSkKPiAg IHN0YXRpYyB2b2lkIGRtYV9mZW5jZV9jaGFpbl9yZWxlYXNlKHN0cnVjdCBkbWFfZmVuY2UgKmZl bmNlKQo+ICAgewo+ICAgCXN0cnVjdCBkbWFfZmVuY2VfY2hhaW4gKmNoYWluID0gdG9fZG1hX2Zl bmNlX2NoYWluKGZlbmNlKTsKPiArCXN0cnVjdCBkbWFfZmVuY2UgKnByZXY7Cj4gKwo+ICsJLyog TWFudWFsbHkgdW5saW5rIHRoZSBjaGFpbiBhcyBtdWNoIGFzIHBvc3NpYmxlIHRvIGF2b2lkIHJl Y3Vyc2lvbgo+ICsJICogYW5kIHBvdGVudGlhbCBzdGFjayBvdmVyZmxvdy4KPiArCSAqLwo+ICsJ d2hpbGUgKChwcmV2ID0gcmN1X2RlcmVmZXJlbmNlX3Byb3RlY3RlZChjaGFpbi0+cHJldiwgdHJ1 ZSkpKSB7Cj4gKwkJc3RydWN0IGRtYV9mZW5jZV9jaGFpbiAqcHJldl9jaGFpbjsKPiArCj4gKwkJ aWYgKGtyZWZfcmVhZCgmcHJldi0+cmVmY291bnQpID4gMSkKPiArCQkgICAgICAgYnJlYWs7Cj4g Kwo+ICsJCXByZXZfY2hhaW4gPSB0b19kbWFfZmVuY2VfY2hhaW4ocHJldik7Cj4gKwkJaWYgKCFw cmV2X2NoYWluKQo+ICsJCQlicmVhazsKPiArCj4gKwkJLyogTm8gbmVlZCBmb3IgYXRvbWljIG9w ZXJhdGlvbnMgc2luY2Ugd2UgaG9sZCB0aGUgbGFzdAo+ICsJCSAqIHJlZmVyZW5jZSB0byBwcmV2 X2NoYWluLgo+ICsJCSAqLwo+ICsJCWNoYWluLT5wcmV2ID0gcHJldl9jaGFpbi0+cHJldjsKPiAr CQlSQ1VfSU5JVF9QT0lOVEVSKHByZXZfY2hhaW4tPnByZXYsIE5VTEwpOwo+ICsJCWRtYV9mZW5j ZV9wdXQocHJldik7Cj4gKwl9Cj4gKwlkbWFfZmVuY2VfcHV0KHByZXYpOwo+ICAgCj4gLQlkbWFf ZmVuY2VfcHV0KHJjdV9kZXJlZmVyZW5jZV9wcm90ZWN0ZWQoY2hhaW4tPnByZXYsIHRydWUpKTsK PiAgIAlkbWFfZmVuY2VfcHV0KGNoYWluLT5mZW5jZSk7Cj4gICAJZG1hX2ZlbmNlX2ZyZWUoZmVu Y2UpOwo+ICAgfQoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9y ZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZl bA==