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 15:03:50 +0300 Message-ID: <1ad7ef20-0207-7f80-ee12-ec98c1d5dfcb@intel.com> 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 mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1FBBB6E408 for ; Mon, 5 Aug 2019 12:03:53 +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 QnkgYW55IGNoYW5nZSwgZGlkIHlvdSBydW4gaW50byB0aGlzIHdpdGggYSBDVFMgdGVzdCB3aG9z ZSBuYW1lIGVuZHMgCndpdGggIi5jaGFpbiIgPyA6KQoKLUxpb25lbAoKT24gMDUvMDgvMjAxOSAx MDozNiwgQ2hyaXN0aWFuIEvDtm5pZyB3cm90ZToKPiBXZSBjYW4ndCBmcmVlIHVwIHRoZSBjaGFp biB1c2luZyByZWN1cnNpb24gb3Igd2UgcnVuIGludG8gYSBzdGFjayBvdmVyZmxvdy4KPgo+IE1h bnVhbGx5IGZyZWUgdXAgdGhlIGRhbmdsaW5nIGNoYWluIG5vZGVzIHRvIGF2b2lkIHJlY3Vyc2lv bi4KPgo+IFNpZ25lZC1vZmYtYnk6IENocmlzdGlhbiBLw7ZuaWcgPGNocmlzdGlhbi5rb2VuaWdA YW1kLmNvbT4KPiAtLS0KPiAgIGRyaXZlcnMvZG1hLWJ1Zi9kbWEtZmVuY2UtY2hhaW4uYyB8IDI0 ICsrKysrKysrKysrKysrKysrKysrKysrLQo+ICAgMSBmaWxlIGNoYW5nZWQsIDIzIGluc2VydGlv bnMoKyksIDEgZGVsZXRpb24oLSkKPgo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2RtYS1idWYvZG1h LWZlbmNlLWNoYWluLmMgYi9kcml2ZXJzL2RtYS1idWYvZG1hLWZlbmNlLWNoYWluLmMKPiBpbmRl eCBiNTA4OWY2NGJlMmEuLjQ0YTc0MTY3N2QyNSAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2RtYS1i dWYvZG1hLWZlbmNlLWNoYWluLmMKPiArKysgYi9kcml2ZXJzL2RtYS1idWYvZG1hLWZlbmNlLWNo YWluLmMKPiBAQCAtMTc4LDggKzE3OCwzMCBAQCBzdGF0aWMgYm9vbCBkbWFfZmVuY2VfY2hhaW5f c2lnbmFsZWQoc3RydWN0IGRtYV9mZW5jZSAqZmVuY2UpCj4gICBzdGF0aWMgdm9pZCBkbWFfZmVu Y2VfY2hhaW5fcmVsZWFzZShzdHJ1Y3QgZG1hX2ZlbmNlICpmZW5jZSkKPiAgIHsKPiAgIAlzdHJ1 Y3QgZG1hX2ZlbmNlX2NoYWluICpjaGFpbiA9IHRvX2RtYV9mZW5jZV9jaGFpbihmZW5jZSk7Cj4g KwlzdHJ1Y3QgZG1hX2ZlbmNlICpwcmV2Owo+ICsKPiArCS8qIE1hbnVhbGx5IHVubGluayB0aGUg Y2hhaW4gYXMgbXVjaCBhcyBwb3NzaWJsZSB0byBhdm9pZCByZWN1cnNpb24KPiArCSAqIGFuZCBw b3RlbnRpYWwgc3RhY2sgb3ZlcmZsb3cuCj4gKwkgKi8KPiArCXdoaWxlICgocHJldiA9IHJjdV9k ZXJlZmVyZW5jZV9wcm90ZWN0ZWQoY2hhaW4tPnByZXYsIHRydWUpKSkgewo+ICsJCXN0cnVjdCBk bWFfZmVuY2VfY2hhaW4gKnByZXZfY2hhaW47Cj4gKwo+ICsJCWlmIChrcmVmX3JlYWQoJnByZXYt PnJlZmNvdW50KSA+IDEpCj4gKwkJICAgICAgIGJyZWFrOwo+ICsKPiArCQlwcmV2X2NoYWluID0g dG9fZG1hX2ZlbmNlX2NoYWluKHByZXYpOwo+ICsJCWlmICghcHJldl9jaGFpbikKPiArCQkJYnJl YWs7Cj4gKwo+ICsJCS8qIE5vIG5lZWQgZm9yIGF0b21pYyBvcGVyYXRpb25zIHNpbmNlIHdlIGhv bGQgdGhlIGxhc3QKPiArCQkgKiByZWZlcmVuY2UgdG8gcHJldl9jaGFpbi4KPiArCQkgKi8KPiAr CQljaGFpbi0+cHJldiA9IHByZXZfY2hhaW4tPnByZXY7Cj4gKwkJUkNVX0lOSVRfUE9JTlRFUihw cmV2X2NoYWluLT5wcmV2LCBOVUxMKTsKPiArCQlkbWFfZmVuY2VfcHV0KHByZXYpOwo+ICsJfQo+ ICsJZG1hX2ZlbmNlX3B1dChwcmV2KTsKPiAgIAo+IC0JZG1hX2ZlbmNlX3B1dChyY3VfZGVyZWZl cmVuY2VfcHJvdGVjdGVkKGNoYWluLT5wcmV2LCB0cnVlKSk7Cj4gICAJZG1hX2ZlbmNlX3B1dChj aGFpbi0+ZmVuY2UpOwo+ICAgCWRtYV9mZW5jZV9mcmVlKGZlbmNlKTsKPiAgIH0KCgpfX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpkcmktZGV2ZWwgbWFpbGlu ZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVl ZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWw=