From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matt Roper Subject: [PATCH v2 2/2] drm/i915: Validate userspace-provided color management LUT's (v2) Date: Thu, 13 Dec 2018 13:55:26 -0800 Message-ID: <20181213215526.31991-3-matthew.d.roper@intel.com> References: <20181213215526.31991-1-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: <20181213215526.31991-1-matthew.d.roper@intel.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, intel-gfx@lists.freedesktop.org Cc: Uma Shankar , Swati Sharma List-Id: intel-gfx@lists.freedesktop.org V2UgY3VycmVudGx5IHByb2dyYW0gdXNlcnNwYWNlLXByb3ZpZGVkIGdhbW1hIGFuZCBkZWdhbW1h IExVVCdzIGludG8gb3VyCmhhcmR3YXJlIHdpdGhvdXQgcmVhbGx5IGNoZWNraW5nIHRvIHNlZSB3 aGV0aGVyIHRoZXkgc2F0aXNmeSBvdXIKaGFyZHdhcmUncyBydWxlcy4gIFdlIHNob3VsZCB0cnkg dG8gY2F0Y2ggdGFibGVzIHRoYXQgYXJlIGludmFsaWQgZm9yCm91ciBoYXJkd2FyZSBlYXJseSBh bmQgcmVqZWN0IHRoZSBhdG9taWMgdHJhbnNhY3Rpb24uCgpBbGwgb2Ygb3VyIHBsYXRmb3JtcyB0 aGF0IGFjY2VwdCBhIGRlZ2FtbWEgTFVUIGV4cGVjdCB0aGF0IHRoZSBlbnRyaWVzCmluIHRoZSBM VVQgYXJlIGFsd2F5cyBmbGF0IG9yIGluY3JlYXNpbmcsIG5ldmVyIGRlY3JlYXNpbmcuICBBbHNv LCBvdXIKR0xLIGFuZCBJQ0wgcGxhdGZvcm1zIG9ubHkgYWNjZXB0IGRlZ2FtbWEgdGFibGVzIHdp dGggcj1nPWIgZW50cmllczsgc28Kd2Ugc2hvdWxkIGFsc28gYWRkIHRoZSByZWxldmFudCBjaGVj a3MgZm9yIHRoYXQgaW4gYW50aWNpcGF0aW9uIG9mCmRlZ2FtbWEgc3VwcG9ydCBsYW5kaW5nIGZv ciB0aG9zZSBwbGF0Zm9ybXMuCgp2MjoKIC0gVXNlIG5ldyBBUEkgKHNpbmdsZSBjaGVjayBmdW5j dGlvbiB3aXRoIGJpdG1hc2sgb2YgdGVzdHMgdG8gYXBwbHkpCiAtIENhbGwgaGVscGVyIGZvciBv dXIgZ2FtbWEgdGFibGUgYXMgd2VsbCAod2l0aCBubyBhZGRpdGlvbmFsIHRlc3RzCiAgIHNwZWNp ZmllZCkgc28gdGhhdCB0aGUgdGFibGUgc2l6ZSB3aWxsIGJlIHZhbGlkYXRlZC4KCkNjOiBVbWEg U2hhbmthciA8dW1hLnNoYW5rYXJAaW50ZWwuY29tPgpDYzogU3dhdGkgU2hhcm1hIDxzd2F0aTIu c2hhcm1hQGludGVsLmNvbT4KU2lnbmVkLW9mZi1ieTogTWF0dCBSb3BlciA8bWF0dGhldy5kLnJv cGVyQGludGVsLmNvbT4KLS0tCiBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9jb2xvci5jIHwg MTkgKysrKysrKysrKysrKysrKysrKwogMSBmaWxlIGNoYW5nZWQsIDE5IGluc2VydGlvbnMoKykK CmRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9jb2xvci5jIGIvZHJpdmVy cy9ncHUvZHJtL2k5MTUvaW50ZWxfY29sb3IuYwppbmRleCAzN2ZkOWRkZjc2MmUuLjVhZDQ0NTlh NWYzYyAxMDA2NDQKLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfY29sb3IuYworKysg Yi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9jb2xvci5jCkBAIC02MDksMTAgKzYwOSwyOSBA QCBpbnQgaW50ZWxfY29sb3JfY2hlY2soc3RydWN0IGludGVsX2NydGNfc3RhdGUgKmNydGNfc3Rh dGUpCiB7CiAJc3RydWN0IGRybV9pOTE1X3ByaXZhdGUgKmRldl9wcml2ID0gdG9faTkxNShjcnRj X3N0YXRlLT5iYXNlLmNydGMtPmRldik7CiAJc2l6ZV90IGdhbW1hX2xlbmd0aCwgZGVnYW1tYV9s ZW5ndGg7CisJdWludDMyX3QgdGVzdHMgPSBEUk1fQ09MT1JfTFVUX0lOQ1JFQVNJTkc7CiAKIAlk ZWdhbW1hX2xlbmd0aCA9IElOVEVMX0lORk8oZGV2X3ByaXYpLT5jb2xvci5kZWdhbW1hX2x1dF9z aXplOwogCWdhbW1hX2xlbmd0aCA9IElOVEVMX0lORk8oZGV2X3ByaXYpLT5jb2xvci5nYW1tYV9s dXRfc2l6ZTsKIAorCS8qCisJICogQWxsIG9mIG91ciBwbGF0Zm9ybXMgbWFuZGF0ZSB0aGF0IHRo ZSBkZWdhbW1hIGN1cnZlIGJlCisJICogbm9uLWRlY3JlYXNpbmcuICBBZGRpdGlvbmFsbHksIEdM SyBhbmQgZ2VuMTEgb25seSBhY2NlcHQgYSBzaW5nbGUKKwkgKiB2YWx1ZSBmb3IgcmVkLCBncmVl biwgYW5kIGJsdWUgaW4gdGhlIGRlZ2FtbWEgdGFibGUuICBNYWtlIHN1cmUKKwkgKiB1c2Vyc3Bh Y2UgZGlkbid0IHRyeSB0byBwYXNzIHVzIHNvbWV0aGluZyB3ZSBjYW4ndCBoYW5kbGUuCisJICoK KwkgKiBXZSBkb24ndCBoYXZlIGFueSBleHRyYSBoYXJkd2FyZSBjb25zdHJhaW50cyBvbiB0aGUg Z2FtbWEgdGFibGUsCisJICogc28gd2UganVzdCB0ZXN0IHRoYXQgaXQncyBhIHByb3BlciBzaXpl IG11bHRpcGxlCisJICogKHRhYmxlc2l6ZSAlIGVudHJ5c2l6ZSA9PSAwKS4KKwkgKi8KKwlpZiAo SVNfR0VNSU5JTEFLRShkZXZfcHJpdikgfHwgSU5URUxfR0VOKGRldl9wcml2KSA+PSAxMSkKKwkJ dGVzdHMgfD0gRFJNX0NPTE9SX0xVVF9FUVVBTF9DSEFOTkVMUzsKKworCWlmIChkcm1fY29sb3Jf bHV0X2NoZWNrKGNydGNfc3RhdGUtPmJhc2UuZGVnYW1tYV9sdXQsIHRlc3RzKSAhPSAwKQorCQly ZXR1cm4gLUVJTlZBTDsKKwlpZiAoZHJtX2NvbG9yX2x1dF9jaGVjayhjcnRjX3N0YXRlLT5iYXNl LmdhbW1hX2x1dCwgMCkgIT0gMCkKKwkJcmV0dXJuIC1FSU5WQUw7CisKIAkvKgogCSAqIFdlIGFs bG93IGJvdGggZGVnYW1tYSAmIGdhbW1hIGx1dHMgYXQgdGhlIHJpZ2h0IHNpemUgb3IKIAkgKiBO VUxMLgotLSAKMi4xNC40CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3Rv cC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmkt ZGV2ZWwK