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Tue, 22 Feb 2022 20:35:24 -0800 Received: from orsmsx611.amr.corp.intel.com (10.22.229.24) by ORSMSX612.amr.corp.intel.com (10.22.229.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Tue, 22 Feb 2022 20:35:24 -0800 Received: from orsmsx611.amr.corp.intel.com ([10.22.229.24]) by ORSMSX611.amr.corp.intel.com ([10.22.229.24]) with mapi id 15.01.2308.020; Tue, 22 Feb 2022 20:35:24 -0800 From: "Kasireddy, Vivek" To: Tvrtko Ursulin , "intel-gfx@lists.freedesktop.org" , "dri-devel@lists.freedesktop.org" Thread-Topic: [PATCH v2 1/3] drm/mm: Ensure that the entry is not NULL before extracting rb_node Thread-Index: AQHYI9VMExFJl786wU2zrhC9c+UoXayX+nyAgACOyLCABfVlgIACCxsQ Date: Wed, 23 Feb 2022 04:35:24 +0000 Message-ID: References: <20220217075014.922605-1-vivek.kasireddy@intel.com> <20220217075014.922605-2-vivek.kasireddy@intel.com> <20f0acb8260a4f18aeadbcc73847e06f@intel.com> <242fada2-dc13-c272-787a-3a0cd4efd52b@linux.intel.com> In-Reply-To: <242fada2-dc13-c272-787a-3a0cd4efd52b@linux.intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-version: 11.6.200.16 dlp-reaction: no-action x-originating-ip: [10.1.200.100] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Subject: Re: [Intel-gfx] [PATCH v2 1/3] drm/mm: Ensure that the entry is not NULL before extracting rb_node X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?utf-8?B?Q2hyaXN0aWFuIEvDtm5pZw==?= Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" SGkgVHZydGtvLA0KDQo+IA0KPiBPbiAxOC8wMi8yMDIyIDAzOjQ3LCBLYXNpcmVkZHksIFZpdmVr IHdyb3RlOg0KPiA+IEhpIFR2cnRrbywNCj4gPg0KPiA+Pg0KPiA+PiBPbiAxNy8wMi8yMDIyIDA3 OjUwLCBWaXZlayBLYXNpcmVkZHkgd3JvdGU6DQo+ID4+PiBXaGlsZSBsb29raW5nIGZvciBuZXh0 IGhvbGVzIHN1aXRhYmxlIGZvciBhbiBhbGxvY2F0aW9uLCBhbHRob3VnaCwNCj4gPj4+IGl0IGlz IGhpZ2hseSB1bmxpa2VseSwgbWFrZSBzdXJlIHRoYXQgdGhlIERFQ0xBUkVfTkVYVF9IT0xFX0FE RFINCj4gPj4+IG1hY3JvIGlzIHVzaW5nIGEgdmFsaWQgbm9kZSBiZWZvcmUgaXQgZXh0cmFjdHMg dGhlIHJiX25vZGUgZnJvbSBpdC4NCj4gPj4NCj4gPj4gV2FzIHRoZSBuZWVkIGZvciB0aGlzIGp1 c3QgYSBjb25zZXF1ZW5jZSBvZiBpbnN1ZmZpY2llbnQgbG9ja2luZyBpbiB0aGUNCj4gPj4gaTkx NSBwYXRjaD8NCj4gPiBbS2FzaXJlZGR5LCBWaXZla10gUGFydGx5LCB5ZXM7IGJ1dCBJIGZpZ3Vy ZWQgc2luY2Ugd2UgYXJlIGFueXdheSBkb2luZw0KPiA+IGlmICghZW50cnkgfHwgLi4pLCBpdCBt YWtlcyBzZW5zZSB0byBkZXJlZmVyZW5jZSBlbnRyeSBhbmQgZXh0cmFjdCB0aGUgcmJfbm9kZQ0K PiA+IGFmdGVyIHRoaXMgY2hlY2suDQo+IA0KPiBVbmxlc3MgSSBhbSBibGluZCBJIGRvbid0IHNl ZSB0aGF0IGl0IG1ha2VzIGEgZGlmZmVyZW5jZS4NCj4gIiZlbnRyeS0+cmJfaG9sZV9hZGRyIiBp cyB0YWtpbmcgYW4gYWRkcmVzcyBvZiwgd2hpY2ggd29ya3MgImZpbmUiIGlzDQpbS2FzaXJlZGR5 LCBWaXZla10gQWgsIGRpZG4ndCByZWFsaXplIGl0IHdhcyB0aGUgc2FtZSB0aGluZyBhcyBvZmZz ZXRvZigpLiANCg0KPiBlbnRyeSBpcyBOVUxMLiBBbmQgZG9lcyBub3QgZ2V0IHBhc3QgdGhlICFl bnRyeSBjaGVjayBmb3IgdGhlIGFjdHVhbA0KPiBkZS1yZWZlcmVuY2UgdmlhIFJCX0VNUFRZX05P REUuIFdpdGggeW91ciBwYXRjaCB5b3UgbW92ZSB0aGF0IGFmdGVyIHRoZQ0KPiAhZW50cnkgY2hl Y2sgYnV0IHN0aWxsIGhhdmUgaXQgaW4gdGhlIFJCX0VNUFRZX05PREUgbWFjcm8uIEFnYWluLCB1 bmxlc3MNCj4gSSBhbSBibGluZCwgSSB0aGluayBqdXN0IGRyb3AgdGhpcyBwYXRjaC4NCltLYXNp cmVkZHksIFZpdmVrXSBTdXJlOyBkbyB5b3Ugd2FudCBtZSB0byBzZW5kIGFub3RoZXIgdmVyc2lv biB3aXRoIHRoaXMNCnBhdGNoIGRyb3BwZWQ/IE9yLCB3b3VsZCB5b3UgYmUgYWJsZSB0byBqdXN0 IG1lcmdlIHRoZSBvdGhlciB0d28gZnJvbSB0aGUNCmxhdGVzdCB2ZXJzaW9uIG9mIHRoaXMgc2Vy aWVzPw0KDQpUaGFua3MsDQpWaXZlaw0KDQo+IA0KPiBSZWdhcmRzLA0KPiANCj4gVHZydGtvDQo+ IA0KPiANCj4gPiBUaGFua3MsDQo+ID4gVml2ZWsNCj4gPg0KPiA+Pg0KPiA+PiBSZWdhcmRzLA0K PiA+Pg0KPiA+PiBUdnJ0a28NCj4gPj4NCj4gPj4+DQo+ID4+PiBDYzogVHZydGtvIFVyc3VsaW4g PHR2cnRrby51cnN1bGluQGxpbnV4LmludGVsLmNvbT4NCj4gPj4+IENjOiBDaHJpc3RpYW4gS8O2 bmlnIDxjaHJpc3RpYW4ua29lbmlnQGFtZC5jb20+DQo+ID4+PiBTaWduZWQtb2ZmLWJ5OiBWaXZl ayBLYXNpcmVkZHkgPHZpdmVrLmthc2lyZWRkeUBpbnRlbC5jb20+DQo+ID4+PiAtLS0NCj4gPj4+ ICAgIGRyaXZlcnMvZ3B1L2RybS9kcm1fbW0uYyB8IDUgKysrLS0NCj4gPj4+ICAgIDEgZmlsZSBj aGFuZ2VkLCAzIGluc2VydGlvbnMoKyksIDIgZGVsZXRpb25zKC0pDQo+ID4+Pg0KPiA+Pj4gZGlm ZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9kcm1fbW0uYyBiL2RyaXZlcnMvZ3B1L2RybS9kcm1f bW0uYw0KPiA+Pj4gaW5kZXggODI1N2Y5ZDRmNjE5Li40OTlkODg3NGU0ZWQgMTAwNjQ0DQo+ID4+ PiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vZHJtX21tLmMNCj4gPj4+ICsrKyBiL2RyaXZlcnMvZ3B1 L2RybS9kcm1fbW0uYw0KPiA+Pj4gQEAgLTM4OSwxMSArMzg5LDEyIEBAIGZpcnN0X2hvbGUoc3Ry dWN0IGRybV9tbSAqbW0sDQo+ID4+PiAgICAjZGVmaW5lIERFQ0xBUkVfTkVYVF9IT0xFX0FERFIo bmFtZSwgZmlyc3QsIGxhc3QpCQkJXA0KPiA+Pj4gICAgc3RhdGljIHN0cnVjdCBkcm1fbW1fbm9k ZSAqbmFtZShzdHJ1Y3QgZHJtX21tX25vZGUgKmVudHJ5LCB1NjQgc2l6ZSkJXA0KPiA+Pj4gICAg ewkJCQkJCQkJCVwNCj4gPj4+IC0Jc3RydWN0IHJiX25vZGUgKnBhcmVudCwgKm5vZGUgPSAmZW50 cnktPnJiX2hvbGVfYWRkcjsJCVwNCj4gPj4+ICsJc3RydWN0IHJiX25vZGUgKnBhcmVudCwgKm5v ZGU7CQkJCQlcDQo+ID4+PiAgICAJCQkJCQkJCQlcDQo+ID4+PiAtCWlmICghZW50cnkgfHwgUkJf RU1QVFlfTk9ERShub2RlKSkJCQkJXA0KPiA+Pj4gKwlpZiAoIWVudHJ5IHx8IFJCX0VNUFRZX05P REUoJmVudHJ5LT5yYl9ob2xlX2FkZHIpKQkJXA0KPiA+Pj4gICAgCQlyZXR1cm4gTlVMTDsJCQkJ CQlcDQo+ID4+PiAgICAJCQkJCQkJCQlcDQo+ID4+PiArCW5vZGUgPSAmZW50cnktPnJiX2hvbGVf YWRkcjsJCQkJCVwNCj4gPj4+ICAgIAlpZiAodXNhYmxlX2hvbGVfYWRkcihub2RlLT5maXJzdCwg c2l6ZSkpIHsJCQlcDQo+ID4+PiAgICAJCW5vZGUgPSBub2RlLT5maXJzdDsJCQkJCVwNCj4gPj4+ ICAgIAkJd2hpbGUgKHVzYWJsZV9ob2xlX2FkZHIobm9kZS0+bGFzdCwgc2l6ZSkpCQlcDQo= From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C6B2BC433EF for ; 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Tue, 22 Feb 2022 20:35:24 -0800 From: "Kasireddy, Vivek" To: Tvrtko Ursulin , "intel-gfx@lists.freedesktop.org" , "dri-devel@lists.freedesktop.org" Subject: RE: [PATCH v2 1/3] drm/mm: Ensure that the entry is not NULL before extracting rb_node Thread-Topic: [PATCH v2 1/3] drm/mm: Ensure that the entry is not NULL before extracting rb_node Thread-Index: AQHYI9VMExFJl786wU2zrhC9c+UoXayX+nyAgACOyLCABfVlgIACCxsQ Date: Wed, 23 Feb 2022 04:35:24 +0000 Message-ID: References: <20220217075014.922605-1-vivek.kasireddy@intel.com> <20220217075014.922605-2-vivek.kasireddy@intel.com> <20f0acb8260a4f18aeadbcc73847e06f@intel.com> <242fada2-dc13-c272-787a-3a0cd4efd52b@linux.intel.com> In-Reply-To: <242fada2-dc13-c272-787a-3a0cd4efd52b@linux.intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-version: 11.6.200.16 dlp-reaction: no-action x-originating-ip: [10.1.200.100] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?utf-8?B?Q2hyaXN0aWFuIEvDtm5pZw==?= Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" SGkgVHZydGtvLA0KDQo+IA0KPiBPbiAxOC8wMi8yMDIyIDAzOjQ3LCBLYXNpcmVkZHksIFZpdmVr IHdyb3RlOg0KPiA+IEhpIFR2cnRrbywNCj4gPg0KPiA+Pg0KPiA+PiBPbiAxNy8wMi8yMDIyIDA3 OjUwLCBWaXZlayBLYXNpcmVkZHkgd3JvdGU6DQo+ID4+PiBXaGlsZSBsb29raW5nIGZvciBuZXh0 IGhvbGVzIHN1aXRhYmxlIGZvciBhbiBhbGxvY2F0aW9uLCBhbHRob3VnaCwNCj4gPj4+IGl0IGlz IGhpZ2hseSB1bmxpa2VseSwgbWFrZSBzdXJlIHRoYXQgdGhlIERFQ0xBUkVfTkVYVF9IT0xFX0FE RFINCj4gPj4+IG1hY3JvIGlzIHVzaW5nIGEgdmFsaWQgbm9kZSBiZWZvcmUgaXQgZXh0cmFjdHMg dGhlIHJiX25vZGUgZnJvbSBpdC4NCj4gPj4NCj4gPj4gV2FzIHRoZSBuZWVkIGZvciB0aGlzIGp1 c3QgYSBjb25zZXF1ZW5jZSBvZiBpbnN1ZmZpY2llbnQgbG9ja2luZyBpbiB0aGUNCj4gPj4gaTkx NSBwYXRjaD8NCj4gPiBbS2FzaXJlZGR5LCBWaXZla10gUGFydGx5LCB5ZXM7IGJ1dCBJIGZpZ3Vy ZWQgc2luY2Ugd2UgYXJlIGFueXdheSBkb2luZw0KPiA+IGlmICghZW50cnkgfHwgLi4pLCBpdCBt YWtlcyBzZW5zZSB0byBkZXJlZmVyZW5jZSBlbnRyeSBhbmQgZXh0cmFjdCB0aGUgcmJfbm9kZQ0K PiA+IGFmdGVyIHRoaXMgY2hlY2suDQo+IA0KPiBVbmxlc3MgSSBhbSBibGluZCBJIGRvbid0IHNl ZSB0aGF0IGl0IG1ha2VzIGEgZGlmZmVyZW5jZS4NCj4gIiZlbnRyeS0+cmJfaG9sZV9hZGRyIiBp cyB0YWtpbmcgYW4gYWRkcmVzcyBvZiwgd2hpY2ggd29ya3MgImZpbmUiIGlzDQpbS2FzaXJlZGR5 LCBWaXZla10gQWgsIGRpZG4ndCByZWFsaXplIGl0IHdhcyB0aGUgc2FtZSB0aGluZyBhcyBvZmZz ZXRvZigpLiANCg0KPiBlbnRyeSBpcyBOVUxMLiBBbmQgZG9lcyBub3QgZ2V0IHBhc3QgdGhlICFl bnRyeSBjaGVjayBmb3IgdGhlIGFjdHVhbA0KPiBkZS1yZWZlcmVuY2UgdmlhIFJCX0VNUFRZX05P REUuIFdpdGggeW91ciBwYXRjaCB5b3UgbW92ZSB0aGF0IGFmdGVyIHRoZQ0KPiAhZW50cnkgY2hl Y2sgYnV0IHN0aWxsIGhhdmUgaXQgaW4gdGhlIFJCX0VNUFRZX05PREUgbWFjcm8uIEFnYWluLCB1 bmxlc3MNCj4gSSBhbSBibGluZCwgSSB0aGluayBqdXN0IGRyb3AgdGhpcyBwYXRjaC4NCltLYXNp cmVkZHksIFZpdmVrXSBTdXJlOyBkbyB5b3Ugd2FudCBtZSB0byBzZW5kIGFub3RoZXIgdmVyc2lv biB3aXRoIHRoaXMNCnBhdGNoIGRyb3BwZWQ/IE9yLCB3b3VsZCB5b3UgYmUgYWJsZSB0byBqdXN0 IG1lcmdlIHRoZSBvdGhlciB0d28gZnJvbSB0aGUNCmxhdGVzdCB2ZXJzaW9uIG9mIHRoaXMgc2Vy aWVzPw0KDQpUaGFua3MsDQpWaXZlaw0KDQo+IA0KPiBSZWdhcmRzLA0KPiANCj4gVHZydGtvDQo+ IA0KPiANCj4gPiBUaGFua3MsDQo+ID4gVml2ZWsNCj4gPg0KPiA+Pg0KPiA+PiBSZWdhcmRzLA0K PiA+Pg0KPiA+PiBUdnJ0a28NCj4gPj4NCj4gPj4+DQo+ID4+PiBDYzogVHZydGtvIFVyc3VsaW4g PHR2cnRrby51cnN1bGluQGxpbnV4LmludGVsLmNvbT4NCj4gPj4+IENjOiBDaHJpc3RpYW4gS8O2 bmlnIDxjaHJpc3RpYW4ua29lbmlnQGFtZC5jb20+DQo+ID4+PiBTaWduZWQtb2ZmLWJ5OiBWaXZl ayBLYXNpcmVkZHkgPHZpdmVrLmthc2lyZWRkeUBpbnRlbC5jb20+DQo+ID4+PiAtLS0NCj4gPj4+ ICAgIGRyaXZlcnMvZ3B1L2RybS9kcm1fbW0uYyB8IDUgKysrLS0NCj4gPj4+ICAgIDEgZmlsZSBj aGFuZ2VkLCAzIGluc2VydGlvbnMoKyksIDIgZGVsZXRpb25zKC0pDQo+ID4+Pg0KPiA+Pj4gZGlm ZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9kcm1fbW0uYyBiL2RyaXZlcnMvZ3B1L2RybS9kcm1f bW0uYw0KPiA+Pj4gaW5kZXggODI1N2Y5ZDRmNjE5Li40OTlkODg3NGU0ZWQgMTAwNjQ0DQo+ID4+ PiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vZHJtX21tLmMNCj4gPj4+ICsrKyBiL2RyaXZlcnMvZ3B1 L2RybS9kcm1fbW0uYw0KPiA+Pj4gQEAgLTM4OSwxMSArMzg5LDEyIEBAIGZpcnN0X2hvbGUoc3Ry dWN0IGRybV9tbSAqbW0sDQo+ID4+PiAgICAjZGVmaW5lIERFQ0xBUkVfTkVYVF9IT0xFX0FERFIo bmFtZSwgZmlyc3QsIGxhc3QpCQkJXA0KPiA+Pj4gICAgc3RhdGljIHN0cnVjdCBkcm1fbW1fbm9k ZSAqbmFtZShzdHJ1Y3QgZHJtX21tX25vZGUgKmVudHJ5LCB1NjQgc2l6ZSkJXA0KPiA+Pj4gICAg ewkJCQkJCQkJCVwNCj4gPj4+IC0Jc3RydWN0IHJiX25vZGUgKnBhcmVudCwgKm5vZGUgPSAmZW50 cnktPnJiX2hvbGVfYWRkcjsJCVwNCj4gPj4+ICsJc3RydWN0IHJiX25vZGUgKnBhcmVudCwgKm5v ZGU7CQkJCQlcDQo+ID4+PiAgICAJCQkJCQkJCQlcDQo+ID4+PiAtCWlmICghZW50cnkgfHwgUkJf RU1QVFlfTk9ERShub2RlKSkJCQkJXA0KPiA+Pj4gKwlpZiAoIWVudHJ5IHx8IFJCX0VNUFRZX05P REUoJmVudHJ5LT5yYl9ob2xlX2FkZHIpKQkJXA0KPiA+Pj4gICAgCQlyZXR1cm4gTlVMTDsJCQkJ CQlcDQo+ID4+PiAgICAJCQkJCQkJCQlcDQo+ID4+PiArCW5vZGUgPSAmZW50cnktPnJiX2hvbGVf YWRkcjsJCQkJCVwNCj4gPj4+ICAgIAlpZiAodXNhYmxlX2hvbGVfYWRkcihub2RlLT5maXJzdCwg c2l6ZSkpIHsJCQlcDQo+ID4+PiAgICAJCW5vZGUgPSBub2RlLT5maXJzdDsJCQkJCVwNCj4gPj4+ ICAgIAkJd2hpbGUgKHVzYWJsZV9ob2xlX2FkZHIobm9kZS0+bGFzdCwgc2l6ZSkpCQlcDQo=