From: Matt Roper Subject: [PATCH 2/2] drm/i915: Validate userspace-provided color management LUT's Date: Tue, 11 Dec 2018 17:05:51 -0800 Message-ID: <20181212010551.6337-3-matthew.d.roper@intel.com> References: <20181212010551.6337-1-matthew.d.roper@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20181212010551.6337-1-matthew.d.roper@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: intel-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org V2UgY3VycmVudGx5IHByb2dyYW0gdXNlcnNwYWNlLXByb3ZpZGVkIGdhbW1hIGFuZCBkZWdhbW1h IExVVCdzIGludG8gb3VyCmhhcmR3YXJlIHdpdGhvdXQgcmVhbGx5IGNoZWNraW5nIHRvIHNlZSB3 aGV0aGVyIHRoZXkgc2F0aXNmeSBvdXIKaGFyZHdhcmUncyBydWxlcy4gIFdlIHNob3VsZCB0cnkg dG8gY2F0Y2ggdGFibGVzIHRoYXQgYXJlIGludmFsaWQgZm9yCm91ciBoYXJkd2FyZSBlYXJseSBh bmQgcmVqZWN0IHRoZSBhdG9taWMgdHJhbnNhY3Rpb24uCgpBbGwgb2Ygb3VyIHBsYXRmb3JtcyB0 aGF0IGFjY2VwdCBhIGRlZ2FtbWEgTFVUIGV4cGVjdCB0aGF0IHRoZSBlbnRyaWVzCmluIHRoZSBM VVQgYXJlIGFsd2F5cyBmbGF0IG9yIGluY3JlYXNpbmcsIG5ldmVyIGRlY3JlYXNpbmcuICBBbHNv LCBvdXIKR0xLIGFuZCBJQ0wgcGxhdGZvcm1zIG9ubHkgYWNjZXB0IGRlZ2FtbWEgdGFibGVzIHdp dGggcj1nPWIgZW50cmllczsgc28Kd2Ugc2hvdWxkIGFsc28gYWRkIHRoZSByZWxldmFudCBjaGVj a3MgZm9yIHRoYXQgaW4gYW50aWNpcGF0aW9uIG9mCmRlZ2FtbWEgc3VwcG9ydCBsYW5kaW5nIGZv ciB0aG9zZSBwbGF0Zm9ybXMuCgpDYzogVW1hIFNoYW5rYXIgPHVtYS5zaGFua2FyQGludGVsLmNv bT4KQ2M6IFN3YXRpIFNoYXJtYSA8c3dhdGkyLnNoYXJtYUBpbnRlbC5jb20+ClNpZ25lZC1vZmYt Ynk6IE1hdHQgUm9wZXIgPG1hdHRoZXcuZC5yb3BlckBpbnRlbC5jb20+Ci0tLQogZHJpdmVycy9n cHUvZHJtL2k5MTUvaW50ZWxfY29sb3IuYyB8IDE4ICsrKysrKysrKysrKysrKysrKwogMSBmaWxl IGNoYW5nZWQsIDE4IGluc2VydGlvbnMoKykKCmRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0v aTkxNS9pbnRlbF9jb2xvci5jIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfY29sb3IuYwpp bmRleCAxZDU3MmU4M2RiN2YuLjA0MWJiNWQ2YTZjZCAxMDA2NDQKLS0tIGEvZHJpdmVycy9ncHUv ZHJtL2k5MTUvaW50ZWxfY29sb3IuYworKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9j b2xvci5jCkBAIC02MTAsNiArNjEwLDI0IEBAIGludCBpbnRlbF9jb2xvcl9jaGVjayhzdHJ1Y3Qg aW50ZWxfY3J0Y19zdGF0ZSAqY3J0Y19zdGF0ZSkKIAlkZWdhbW1hX2xlbmd0aCA9IElOVEVMX0lO Rk8oZGV2X3ByaXYpLT5jb2xvci5kZWdhbW1hX2x1dF9zaXplOwogCWdhbW1hX2xlbmd0aCA9IElO VEVMX0lORk8oZGV2X3ByaXYpLT5jb2xvci5nYW1tYV9sdXRfc2l6ZTsKIAorCS8qCisJICogR0xL IGFuZCBnZW4xMSBvbmx5IGFjY2VwdCBhIHNpbmdsZSB2YWx1ZSBmb3IgcmVkLCBncmVlbiwgYW5k CisJICogYmx1ZSBpbiB0aGUgZGVnYW1tYSB0YWJsZS4gIE1ha2Ugc3VyZSB1c2Vyc3BhY2UgZGlk bid0IHRyeSB0bworCSAqIHBhc3MgdXMgc29tZXRoaW5nIHdlIGNhbid0IGhhbmRsZS4KKwkgKi8K KwlpZiAoSVNfR0VNSU5JTEFLRShkZXZfcHJpdikgfHwgSU5URUxfR0VOKGRldl9wcml2KSA+PSAx MSkgeworCQlpZiAoIWRybV9jb2xvcl9sdXRfaGFzX2VxdWFsX2NoYW5uZWxzKGNydGNfc3RhdGUt PmJhc2UuZGVnYW1tYV9sdXQpKSB7CisJCQlEUk1fREVCVUdfS01TKCJBbGwgZGVnYW1tYSBlbnRy aWVzIG11c3QgaGF2ZSBlcXVhbCByL2cvYlxuIik7CisJCQlyZXR1cm4gLUVJTlZBTDsKKwkJfQor CX0KKworCS8qIEFsbCBwbGF0Zm9ybXMgcmVxdWlyZSB0aGF0IHRoZSBkZWdhbW1hIGN1cnZlIGJl IG5vbi1kZWNyZWFzaW5nICovCisJaWYgKCFkcm1fY29sb3JfbHV0X2lzX2luY3JlYXNpbmcoY3J0 Y19zdGF0ZS0+YmFzZS5kZWdhbW1hX2x1dCkpIHsKKwkJRFJNX0RFQlVHX0tNUygiRGVnYW1tYSBj dXJ2ZSBtdXN0IG5ldmVyIGRlY3JlYXNlLlxuIik7CisJCXJldHVybiAtRUlOVkFMOworCX0KKwog CS8qCiAJICogV2UgYWxsb3cgYm90aCBkZWdhbW1hICYgZ2FtbWEgbHV0cyBhdCB0aGUgcmlnaHQg c2l6ZSBvcgogCSAqIE5VTEwuCi0tIAoyLjE0LjQKCl9fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxp c3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFu L2xpc3RpbmZvL2ludGVsLWdmeAo=