From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Clark Subject: [PATCH 2/2] drm/msm: protect against faults from copy_from_user() in submit ioctl Date: Mon, 22 Aug 2016 15:38:05 -0400 Message-ID: <1471894685-20199-2-git-send-email-robdclark@gmail.com> References: <1471894685-20199-1-git-send-email-robdclark@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1471894685-20199-1-git-send-email-robdclark@gmail.com> 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: stable@vger.kernel.org, Al Viro , Vaishali Thakkar , freedreno@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org QW4gZXZpbCB1c2Vyc3BhY2UgY291bGQgdHJ5IHRvIGNhdXNlIGRlYWRsb2NrIGJ5IHBhc3Npbmcg YW4gdW5mYXVsdGVkLWluCkdFTSBibyBhcyBzdWJtaXQtPmJvcyAob3Igc3VibWl0LT5jbWRzKSB0 YWJsZS4gIFdoaWNoIHdpbGwgdHJpZ2dlcgptc21fZ2VtX2ZhdWx0KCkgd2hpbGUgd2UgYWxyZWFk eSBob2xkIHN0cnVjdF9tdXRleC4gIFNlZToKCmh0dHBzOi8vZ2l0aHViLmNvbS9mcmVlZHJlbm8v bXNtdGVzdC9ibG9iL21hc3Rlci9ldmlsc3VibWl0dGVzdC5jCgpDYzogc3RhYmxlQHZnZXIua2Vy bmVsLm9yZwpTaWduZWQtb2ZmLWJ5OiBSb2IgQ2xhcmsgPHJvYmRjbGFya0BnbWFpbC5jb20+Ci0t LQogZHJpdmVycy9ncHUvZHJtL21zbS9tc21fZHJ2LmggICAgICAgIHwgNiArKysrKysKIGRyaXZl cnMvZ3B1L2RybS9tc20vbXNtX2dlbS5jICAgICAgICB8IDkgKysrKysrKysrCiBkcml2ZXJzL2dw dS9kcm0vbXNtL21zbV9nZW1fc3VibWl0LmMgfCAzICsrKwogMyBmaWxlcyBjaGFuZ2VkLCAxOCBp bnNlcnRpb25zKCspCgpkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL21zbS9tc21fZHJ2Lmgg Yi9kcml2ZXJzL2dwdS9kcm0vbXNtL21zbV9kcnYuaAppbmRleCBhMzVjMWI2Li45NTc4MDFlIDEw MDY0NAotLS0gYS9kcml2ZXJzL2dwdS9kcm0vbXNtL21zbV9kcnYuaAorKysgYi9kcml2ZXJzL2dw dS9kcm0vbXNtL21zbV9kcnYuaApAQCAtMTU3LDYgKzE1NywxMiBAQCBzdHJ1Y3QgbXNtX2RybV9w cml2YXRlIHsKIAlzdHJ1Y3Qgc2hyaW5rZXIgc2hyaW5rZXI7CiAKIAlzdHJ1Y3QgbXNtX3ZibGFu a19jdHJsIHZibGFua19jdHJsOworCisJLyogdGFzayBob2xkaW5nIHN0cnVjdF9tdXRleC4uIGN1 cnJlbnRseSBvbmx5IHVzZWQgaW4gc3VibWl0IHBhdGgKKwkgKiB0byBkZXRlY3QgYW5kIHJlamVj dCBmYXVsdHMgZnJvbSBjb3B5X2Zyb21fdXNlcigpIGZvciBzdWJtaXQKKwkgKiBpb2N0bC4KKwkg Ki8KKwlzdHJ1Y3QgdGFza19zdHJ1Y3QgKnN0cnVjdF9tdXRleF90YXNrOwogfTsKIAogc3RydWN0 IG1zbV9mb3JtYXQgewpkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL21zbS9tc21fZ2VtLmMg Yi9kcml2ZXJzL2dwdS9kcm0vbXNtL21zbV9nZW0uYwppbmRleCA4ZGZkZWVjLi5mNmI4OTQ1IDEw MDY0NAotLS0gYS9kcml2ZXJzL2dwdS9kcm0vbXNtL21zbV9nZW0uYworKysgYi9kcml2ZXJzL2dw dS9kcm0vbXNtL21zbV9nZW0uYwpAQCAtMTk2LDExICsxOTYsMjAgQEAgaW50IG1zbV9nZW1fZmF1 bHQoc3RydWN0IHZtX2FyZWFfc3RydWN0ICp2bWEsIHN0cnVjdCB2bV9mYXVsdCAqdm1mKQogewog CXN0cnVjdCBkcm1fZ2VtX29iamVjdCAqb2JqID0gdm1hLT52bV9wcml2YXRlX2RhdGE7CiAJc3Ry dWN0IGRybV9kZXZpY2UgKmRldiA9IG9iai0+ZGV2OworCXN0cnVjdCBtc21fZHJtX3ByaXZhdGUg KnByaXYgPSBkZXYtPmRldl9wcml2YXRlOwogCXN0cnVjdCBwYWdlICoqcGFnZXM7CiAJdW5zaWdu ZWQgbG9uZyBwZm47CiAJcGdvZmZfdCBwZ29mZjsKIAlpbnQgcmV0OwogCisJLyogVGhpcyBzaG91 bGQgb25seSBoYXBwZW4gaWYgdXNlcnNwYWNlIHRyaWVzIHRvIHBhc3MgYSBtbWFwJ2QKKwkgKiBi dXQgdW5mYXVsdGVkIGdlbSBibyB2YWRkciBpbnRvIHN1Ym1pdCBpb2N0bCwgdHJpZ2dlcmluZwor CSAqIGEgcGFnZSBmYXVsdCB3aGlsZSBzdHJ1Y3RfbXV0ZXggaXMgYWxyZWFkeSBoZWxkLiAgVGhp cyBpcworCSAqIG5vdCBhIHZhbGlkIHVzZS1jYXNlIHNvIGp1c3QgYmFpbC4KKwkgKi8KKwlpZiAo cHJpdi0+c3RydWN0X211dGV4X3Rhc2sgPT0gY3VycmVudCkKKwkJcmV0dXJuIFZNX0ZBVUxUX1NJ R0JVUzsKKwogCS8qIE1ha2Ugc3VyZSB3ZSBkb24ndCBwYXJhbGxlbCB1cGRhdGUgb24gYSBmYXVs dCwgbm9yIG1vdmUgb3IgcmVtb3ZlCiAJICogc29tZXRoaW5nIGZyb20gYmVuZWF0aCBvdXIgZmVl dAogCSAqLwpkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL21zbS9tc21fZ2VtX3N1Ym1pdC5j IGIvZHJpdmVycy9ncHUvZHJtL21zbS9tc21fZ2VtX3N1Ym1pdC5jCmluZGV4IDAzZDRjZTIuLjBi ZTU3YTkgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvZ3B1L2RybS9tc20vbXNtX2dlbV9zdWJtaXQuYwor KysgYi9kcml2ZXJzL2dwdS9kcm0vbXNtL21zbV9nZW1fc3VibWl0LmMKQEAgLTQyNiw2ICs0MjYs OCBAQCBpbnQgbXNtX2lvY3RsX2dlbV9zdWJtaXQoc3RydWN0IGRybV9kZXZpY2UgKmRldiwgdm9p ZCAqZGF0YSwKIAlpZiAocmV0KQogCQlyZXR1cm4gcmV0OwogCisJcHJpdi0+c3RydWN0X211dGV4 X3Rhc2sgPSBjdXJyZW50OworCiAJaWYgKGFyZ3MtPmZsYWdzICYgTVNNX1NVQk1JVF9GRU5DRV9G RF9PVVQpIHsKIAkJb3V0X2ZlbmNlX2ZkID0gZ2V0X3VudXNlZF9mZF9mbGFncyhPX0NMT0VYRUMp OwogCQlpZiAob3V0X2ZlbmNlX2ZkIDwgMCkgewpAQCAtNTQ5LDYgKzU1MSw3IEBAIG91dDoKIG91 dF91bmxvY2s6CiAJaWYgKHJldCAmJiAob3V0X2ZlbmNlX2ZkID49IDApKQogCQlwdXRfdW51c2Vk X2ZkKG91dF9mZW5jZV9mZCk7CisJcHJpdi0+c3RydWN0X211dGV4X3Rhc2sgPSBOVUxMOwogCW11 dGV4X3VubG9jaygmZGV2LT5zdHJ1Y3RfbXV0ZXgpOwogCXJldHVybiByZXQ7CiB9Ci0tIAoyLjcu NAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRl dmVsIG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8v bGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJpLWRldmVsCg==