From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Anholt Subject: [PATCH 5/6] drm/vc4: Fix overflow mem unreferencing when the binner runs dry. Date: Tue, 26 Jul 2016 13:47:14 -0700 Message-ID: <1469566035-22006-6-git-send-email-eric@anholt.net> References: <1469566035-22006-1-git-send-email-eric@anholt.net> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from anholt.net (anholt.net [50.246.234.109]) by gabe.freedesktop.org (Postfix) with ESMTP id A250D6E57A for ; Tue, 26 Jul 2016 20:47:20 +0000 (UTC) In-Reply-To: <1469566035-22006-1-git-send-email-eric@anholt.net> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org List-Id: dri-devel@lists.freedesktop.org T3ZlcmZsb3cgbWVtb3J5IGhhbmRsaW5nIGlzIHRyaWNreTogV2hpbGUgaXQncyBzdGlsbCByZWZl cmVuY2VkIGJ5IHRoZQpCUE8gcmVnaXN0ZXJzLCB3ZSB3YW50IHRvIGtlZXAgaXQgZnJvbSBiZWlu ZyBmcmVlZC4gIFdoZW4gd2UgYXJlCnB1dHRpbmcgYSBuZXcgc2V0IG9mIG92ZXJmbG93IG1lbW9y eSBpbiB0aGUgcmVnaXN0ZXJzLCB3ZSBuZWVkIHRvCmFzc2lnbiB0aGUgb2xkIG9uZSB0byB0aGUg bGFzdCByZW5kZXJpbmcgam9iIHVzaW5nIGl0LgoKV2Ugd2VyZSBsb29raW5nIGF0ICJ3aGF0J3Mg Y3VycmVudGx5IHJ1bm5pbmcgaW4gdGhlIGJpbm5lciIsIGJ1dCBzaW5jZQp0aGUgYmluL3JlbmRl ciBzdWJtaXNzaW9uIHNwbGl0LCB3ZSBtYXkgZW5kIHVwIHdpdGggdGhlIGJpbm5lcgpjb21wbGV0 aW5nIGFuZCBoYXZpbmcgbm8gbmV3IGpvYiB3aGlsZSB0aGUgcmVuZGVyZXIgaXMgc3RpbGwKcHJv Y2Vzc2luZy4gIFNvLCBpZiB3ZSBkb24ndCBmaW5kIGEgYmluIGpvYiBhdCBhbGwsIGxvb2sgYXQg dGhlCmhpZ2hlc3Qtc2Vxbm8gKGxhc3QpIHJlbmRlciBqb2IgdG8gYXR0YWNoIG91ciBvdmVyZmxv dyB0by4KClNpZ25lZC1vZmYtYnk6IEVyaWMgQW5ob2x0IDxlcmljQGFuaG9sdC5uZXQ+CkZpeGVz OiBjYTI2ZDI4YmJhYTMgKCJkcm0vdmM0OiBpbXByb3ZlIHRocm91Z2hwdXQgYnkgcGlwZWxpbmlu ZyBiaW5uaW5nIGFuZCByZW5kZXJpbmcgam9icyIpCkNjOiBzdGFibGVAdmdlci5rZXJuZWwub3Jn Ci0tLQogZHJpdmVycy9ncHUvZHJtL3ZjNC92YzRfZHJ2LmggfCA5ICsrKysrKysrKwogZHJpdmVy cy9ncHUvZHJtL3ZjNC92YzRfaXJxLmMgfCA0ICsrKy0KIDIgZmlsZXMgY2hhbmdlZCwgMTIgaW5z ZXJ0aW9ucygrKSwgMSBkZWxldGlvbigtKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS92 YzQvdmM0X2Rydi5oIGIvZHJpdmVycy9ncHUvZHJtL3ZjNC92YzRfZHJ2LmgKaW5kZXggMGNlZDI4 OWQ3Njk2Li44N2Y3Mjc5MzJhZjIgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvZ3B1L2RybS92YzQvdmM0 X2Rydi5oCisrKyBiL2RyaXZlcnMvZ3B1L2RybS92YzQvdmM0X2Rydi5oCkBAIC0zMjEsNiArMzIx LDE1IEBAIHZjNF9maXJzdF9yZW5kZXJfam9iKHN0cnVjdCB2YzRfZGV2ICp2YzQpCiAJCQkJc3Ry dWN0IHZjNF9leGVjX2luZm8sIGhlYWQpOwogfQogCitzdGF0aWMgaW5saW5lIHN0cnVjdCB2YzRf ZXhlY19pbmZvICoKK3ZjNF9sYXN0X3JlbmRlcl9qb2Ioc3RydWN0IHZjNF9kZXYgKnZjNCkKK3sK KwlpZiAobGlzdF9lbXB0eSgmdmM0LT5yZW5kZXJfam9iX2xpc3QpKQorCQlyZXR1cm4gTlVMTDsK KwlyZXR1cm4gbGlzdF9sYXN0X2VudHJ5KCZ2YzQtPnJlbmRlcl9qb2JfbGlzdCwKKwkJCSAgICAg ICBzdHJ1Y3QgdmM0X2V4ZWNfaW5mbywgaGVhZCk7Cit9CisKIC8qKgogICogc3RydWN0IHZjNF90 ZXh0dXJlX3NhbXBsZV9pbmZvIC0gc2F2ZXMgdGhlIG9mZnNldHMgaW50byB0aGUgVUJPIGZvciB0 ZXh0dXJlCiAgKiBzZXR1cCBwYXJhbWV0ZXJzLgpkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJt L3ZjNC92YzRfaXJxLmMgYi9kcml2ZXJzL2dwdS9kcm0vdmM0L3ZjNF9pcnEuYwppbmRleCBiMDEw NGEzNDZhNzQuLjA5NGJjNmE0NzVjMSAxMDA2NDQKLS0tIGEvZHJpdmVycy9ncHUvZHJtL3ZjNC92 YzRfaXJxLmMKKysrIGIvZHJpdmVycy9ncHUvZHJtL3ZjNC92YzRfaXJxLmMKQEAgLTgzLDggKzgz LDEwIEBAIHZjNF9vdmVyZmxvd19tZW1fd29yayhzdHJ1Y3Qgd29ya19zdHJ1Y3QgKndvcmspCiAK IAkJc3Bpbl9sb2NrX2lycXNhdmUoJnZjNC0+am9iX2xvY2ssIGlycWZsYWdzKTsKIAkJY3VycmVu dF9leGVjID0gdmM0X2ZpcnN0X2Jpbl9qb2IodmM0KTsKKwkJaWYgKCFjdXJyZW50X2V4ZWMpCisJ CQljdXJyZW50X2V4ZWMgPSB2YzRfbGFzdF9yZW5kZXJfam9iKHZjNCk7CiAJCWlmIChjdXJyZW50 X2V4ZWMpIHsKLQkJCXZjNC0+b3ZlcmZsb3dfbWVtLT5zZXFubyA9IHZjNC0+ZmluaXNoZWRfc2Vx bm8gKyAxOworCQkJdmM0LT5vdmVyZmxvd19tZW0tPnNlcW5vID0gY3VycmVudF9leGVjLT5zZXFu bzsKIAkJCWxpc3RfYWRkX3RhaWwoJnZjNC0+b3ZlcmZsb3dfbWVtLT51bnJlZl9oZWFkLAogCQkJ CSAgICAgICZjdXJyZW50X2V4ZWMtPnVucmVmX2xpc3QpOwogCQkJdmM0LT5vdmVyZmxvd19tZW0g PSBOVUxMOwotLSAKMi44LjEKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNr dG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2Ry aS1kZXZlbAo=