From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.85.151]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 779D9823BF for ; Wed, 8 May 2024 11:52:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.58.85.151 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715169136; cv=none; b=frF3Z6i9iZ8XdbKk64VaDvPiR4PAP3sdMc/hyzGHROUIyX/uDJ0OUB5RExyZnu94rSSeKo4895USr+QbpPCsxt4qCFDLFHnPW/c+XeEULrRTOnHIjCTErNDgvbh5aBy6WlM11Pcam9YtvWPfFdgzrfr4HCqFaUcvKspLxfHUpJE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715169136; c=relaxed/simple; bh=3TcpGLamPR+er3cedcxqpNcBb7/RyBJ4tTHiLInhVpI=; h=From:To:Subject:Date:Message-ID:References:In-Reply-To: MIME-Version:Content-Type; b=EUxRBh8V+uiOuyewowKk6TkNyOnjUKVWOzgK6p6d0xgRWoIxht04hDJ29VU8vAbkC1Kwt3EMI3/MIgV7YcTT7rFguVid5vmnAQ+LU7oKBQdO2jtC053HafSp+pnJWgX68/W4GddxkIhEItAUjgUXkuKtcZknWWFczgM5IGZs5VE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ACULAB.COM; spf=pass smtp.mailfrom=aculab.com; arc=none smtp.client-ip=185.58.85.151 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ACULAB.COM Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=aculab.com Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with both STARTTLS and AUTH (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-28-ejStQR8JMFGrAgvUcnec0Q-1; Wed, 08 May 2024 12:52:11 +0100 X-MC-Unique: ejStQR8JMFGrAgvUcnec0Q-1 Received: from AcuMS.Aculab.com (10.202.163.4) by AcuMS.aculab.com (10.202.163.4) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Wed, 8 May 2024 12:51:40 +0100 Received: from AcuMS.Aculab.com ([::1]) by AcuMS.aculab.com ([::1]) with mapi id 15.00.1497.048; Wed, 8 May 2024 12:51:40 +0100 From: David Laight To: =?utf-8?B?J0NocmlzdGlhbiBLw7ZuaWcn?= , "T.J. Mercier" , Charan Teja Kalla , zhiguojiang , Sumit Semwal , "linux-media@vger.kernel.org" , "dri-devel@lists.freedesktop.org" , "linaro-mm-sig@lists.linaro.org" , "linux-kernel@vger.kernel.org" , "opensource.kernel@vivo.com" Subject: RE: [PATCH] dmabuf: fix dmabuf file poll uaf issue Thread-Topic: [PATCH] dmabuf: fix dmabuf file poll uaf issue Thread-Index: AQHaoId+JYKtMQTt+U6dUCQNubR7xbGNNzKw Date: Wed, 8 May 2024 11:51:40 +0000 Message-ID: References: <4fedd80c-d5b6-4478-bfd3-02d1ee1a26e5@vivo.com> <2ebca2fd-9465-4e64-b3cc-ffb88ef87800@vivo.com> <289b9ad6-58a3-aa39-48ae-a244fe108354@quicinc.com> <8ca45837-cbed-28da-4a6f-0dcec8294f51@quicinc.com> <83605228-92ee-b666-d894-1c145af2e5ab@quicinc.com> <8915fcc1-d8f1-48c2-9e51-65159aaa5a3b@amd.com> <44b08793-cf44-4cbd-a3bb-583af351ab9e@amd.com> In-Reply-To: <44b08793-cf44-4cbd-a3bb-583af351ab9e@amd.com> Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 RnJvbTogQ2hyaXN0aWFuIEvDtm5pZw0KPiBTZW50OiAwNyBNYXkgMjAyNCAxNTowNQ0KLi4uDQo+ IEkgYWN0dWFsbHkgaGF2ZSBiZWVuIHRlbGxpbmcgcGVvcGxlIHRvIChhYil1c2UgdGhlIGVwb2xs IGJlaGF2aW9yIHRvDQo+IGNoZWNrIGlmIHR3byBmaWxlIGRlc2NyaXB0b3JzIHBvaW50IHRvIHRo ZSBzYW1lIHVuZGVybHlpbmcgZmlsZSB3aGVuDQo+IEtDTVAgaXNuJ3QgYXZhaWxhYmxlLg0KDQpJ biB3aGF0IHdheT8NCllvdSBjYW4gYWRkIGJvdGggZmQgdG8gdGhlIHNhbWUgZXBvbGwgZmQuDQpS ZWx5aW5nIG9uIHRoZSBpbXBsaWNpdCBFUE9MTF9DVExfREVMIG5vdCBoYXBwZW5pbmcgdW50aWwg Ym90aCBmZCBhcmUNCmNsb3NlZCBpcyBhIHJlY2lwZSBmb3IgZGlzYXN0ZXIuDQooQW5kIEkgY2Fu J3Qgc2VlIGFuIG9idmlvdXMgd2F5IG9mIHRlc3RpbmcgaXQuKQ0KDQpRNi9BNiBvbiBlcG9sbCg3 KSBzaG91bGQgYWx3YXlzIGhhdmUgaGFkIGEgY2F2ZWF0IHRoYXQgaXQgaXMgYW4NCidpbXBsZW1l bnRhdGlvbiBkZXRhaWwnIGFuZCBzaG91bGRuJ3QgYmUgcmVsaWVkIG9uLg0KKGl0IGlzIHdyaXR0 ZW4gYXMgYSAnYmV3YXJlIG9mJyAuLi4pDQoNClRoZSBvdGhlciBwb2ludCBpcyB0aGF0IHRoZXJl IGFyZSB0d28gd2F5cyB0byBnZXQgbXVsdGlwbGUgZmQgdGhhdA0KcmVmZXJlbmNlIHRoZSBzYW1l IHVuZGVybHlpbmcgZmlsZS4NCmR1cCgpIGZvcmsoKSBldGMgc2hhcmUgdGhlIGZpbGUgb2Zmc2V0 LCBidXQgb3BlbigiL2Rldi9mZC9uIikgYWRkcw0KYSByZWZlcmVuY2UgY291bnQgbGF0ZXIgYW5k IGhhcyBhIHNlcGFyYXRlIGZpbGUgb2Zmc2V0Lg0KDQpJIGRvbid0IGtub3cgd2hpY2ggc3RydWN0 dXJlIGVwb2xsIGlzIHVzaW5nLCBidXQgSSBzdXNwZWN0IGl0IGlzDQp0aGUgZm9ybWVyLg0KU28g aXQgbWF5IG5vdCB0ZWxsIHlvdSB3aGF0IHlvdSB3YW50IHRvIGtub3cuDQoNCglEYXZpZA0KDQot DQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwg TWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2Fs ZXMpDQo=