From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lyude Paul Subject: [WIP PATCH 09/15] drm/nouveau: Fix potential use-after-frees for MSTCs Date: Thu, 13 Dec 2018 20:25:38 -0500 Message-ID: <20181214012604.13746-10-lyude@redhat.com> References: <20181214012604.13746-1-lyude@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20181214012604.13746-1-lyude-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: nouveau-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "Nouveau" To: dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, intel-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Cc: David Airlie , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Jerry Zuo , Sean Paul , Ben Skeggs , Daniel Vetter , Harry Wentland List-Id: intel-gfx@lists.freedesktop.org Tm93IHRoYXQgd2UgZmluYWxseSBoYXZlIGEgc2FuZSB3YXkgdG8ga2VlcCBwb3J0IGFsbG9jYXRp b25zIGFyb3VuZCwgdXNlCml0IHRvIGZpeCB0aGUgcG90ZW50aWFsIHVuY2hlY2tlZCAtPnBvcnQg YWNjZXNzZXMgdGhhdCBub3V2ZWF1IG1ha2VzIGJ5Cm1ha2luZyBzdXJlIHdlIGtlZXAgdGhlIG1z dCBwb3J0IGFsbG9jYXRlZCBmb3IgYXMgbG9uZyBhcyBpdCdzCmRybV9jb25uZWN0b3IgaXMgYWNj ZXNzaWJsZS4KCkFkZGl0aW9uYWxseSwgbm93IHRoYXQgd2UndmUgZ3VhcmFudGVlZCB0aGF0IG1z dGMtPnBvcnQgaXMgYWxsb2NhdGVkIGZvcgphcyBsb25nIGFzIHdlIGtlZXAgbXN0YyBhcm91bmQg d2UgY2FuIHJlbW92ZSB0aGUgY29ubmVjdG9yIHJlZ2lzdHJhdGlvbgpjaGVja3MgZm9yIGNvZGVw YXRocyB3aGljaCByZWxlYXNlIHBheWxvYWRzLCBhbGxvd2luZyB1cyB0byByZWxlYXNlCnBheWxv YWRzIG9uIGFjdGl2ZSB0b3BvbG9naWVzIHByb3Blcmx5LiBUaGVzZSByZWdpc3RyYXRpb24gY2hl Y2tzIHdlcmUKb25seSByZXF1aXJlZCBiZWZvcmUgaW4gb3JkZXIgdG8gYXZvaWQgc2l0dWF0aW9u cyB3aGVyZSBtc3RjLT5wb3J0IGNvdWxkCnRlY2huaWNhbGx5IGJlIHBvaW50aW5nIGF0IGZyZWVk IG1lbW9yeS4KClNpZ25lZC1vZmYtYnk6IEx5dWRlIFBhdWwgPGx5dWRlQHJlZGhhdC5jb20+Ci0t LQogZHJpdmVycy9ncHUvZHJtL25vdXZlYXUvZGlzcG52NTAvZGlzcC5jIHwgNiArKysrKysKIDEg ZmlsZSBjaGFuZ2VkLCA2IGluc2VydGlvbnMoKykKCmRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9k cm0vbm91dmVhdS9kaXNwbnY1MC9kaXNwLmMgYi9kcml2ZXJzL2dwdS9kcm0vbm91dmVhdS9kaXNw bnY1MC9kaXNwLmMKaW5kZXggMGY3ZDcyNTE4NjA0Li45ODIwNTRiYmNjOGIgMTAwNjQ0Ci0tLSBh L2RyaXZlcnMvZ3B1L2RybS9ub3V2ZWF1L2Rpc3BudjUwL2Rpc3AuYworKysgYi9kcml2ZXJzL2dw dS9kcm0vbm91dmVhdS9kaXNwbnY1MC9kaXNwLmMKQEAgLTk2NCw3ICs5NjQsMTEgQEAgc3RhdGlj IHZvaWQKIG52NTBfbXN0Y19kZXN0cm95KHN0cnVjdCBkcm1fY29ubmVjdG9yICpjb25uZWN0b3Ip CiB7CiAJc3RydWN0IG52NTBfbXN0YyAqbXN0YyA9IG52NTBfbXN0Yyhjb25uZWN0b3IpOworCiAJ ZHJtX2Nvbm5lY3Rvcl9jbGVhbnVwKCZtc3RjLT5jb25uZWN0b3IpOworCWlmIChtc3RjLT5wb3J0 KQorCQlkcm1fZHBfbXN0X3B1dF9wb3J0X21hbGxvYyhtc3RjLT5wb3J0KTsKKwogCWtmcmVlKG1z dGMpOwogfQogCkBAIC0xMDEyLDYgKzEwMTYsNyBAQCBudjUwX21zdGNfbmV3KHN0cnVjdCBudjUw X21zdG0gKm1zdG0sIHN0cnVjdCBkcm1fZHBfbXN0X3BvcnQgKnBvcnQsCiAJZHJtX29iamVjdF9h dHRhY2hfcHJvcGVydHkoJm1zdGMtPmNvbm5lY3Rvci5iYXNlLCBkZXYtPm1vZGVfY29uZmlnLnBh dGhfcHJvcGVydHksIDApOwogCWRybV9vYmplY3RfYXR0YWNoX3Byb3BlcnR5KCZtc3RjLT5jb25u ZWN0b3IuYmFzZSwgZGV2LT5tb2RlX2NvbmZpZy50aWxlX3Byb3BlcnR5LCAwKTsKIAlkcm1fY29u bmVjdG9yX3NldF9wYXRoX3Byb3BlcnR5KCZtc3RjLT5jb25uZWN0b3IsIHBhdGgpOworCWRybV9k cF9tc3RfZ2V0X3BvcnRfbWFsbG9jKHBvcnQpOwogCXJldHVybiAwOwogfQogCkBAIC0xMDc3LDYg KzEwODIsNyBAQCBudjUwX21zdG1fZGVzdHJveV9jb25uZWN0b3Ioc3RydWN0IGRybV9kcF9tc3Rf dG9wb2xvZ3lfbWdyICptZ3IsCiAJZHJtX2ZiX2hlbHBlcl9yZW1vdmVfb25lX2Nvbm5lY3Rvcigm ZHJtLT5mYmNvbi0+aGVscGVyLCAmbXN0Yy0+Y29ubmVjdG9yKTsKIAogCWRybV9tb2Rlc2V0X2xv Y2soJmRybS0+ZGV2LT5tb2RlX2NvbmZpZy5jb25uZWN0aW9uX211dGV4LCBOVUxMKTsKKwlkcm1f ZHBfbXN0X3B1dF9wb3J0X21hbGxvYyhtc3RjLT5wb3J0KTsKIAltc3RjLT5wb3J0ID0gTlVMTDsK IAlkcm1fbW9kZXNldF91bmxvY2soJmRybS0+ZGV2LT5tb2RlX2NvbmZpZy5jb25uZWN0aW9uX211 dGV4KTsKIAotLSAKMi4xOS4yCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fXwpOb3V2ZWF1IG1haWxpbmcgbGlzdApOb3V2ZWF1QGxpc3RzLmZyZWVkZXNrdG9w Lm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL25vdXZl YXUK