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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 38E3FC433FE for ; Fri, 6 May 2022 01:50:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1388138AbiEFBxo (ORCPT ); Thu, 5 May 2022 21:53:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44458 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349717AbiEFBxl (ORCPT ); Thu, 5 May 2022 21:53:41 -0400 Received: from mail-pl1-x634.google.com (mail-pl1-x634.google.com [IPv6:2607:f8b0:4864:20::634]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 61C1062A1A for ; Thu, 5 May 2022 18:50:00 -0700 (PDT) Received: by mail-pl1-x634.google.com with SMTP id n8so6051409plh.1 for ; Thu, 05 May 2022 18:50:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-transfer-encoding:content-language; bh=qiHKrawCSEYS4sdc87s3HzBAfn4f+VmuSVImw7uTP4A=; b=F98Lin7aPfGaSoPtPZEE8s+NM6NRh+0LKMImQjIgs0Zkhyv4XBwnzeLr8M9xrKogiu MwPofz7GmCqWLwIYjwHHM2U9nChNxdi8IKbXrgyry5F8/nwQUIoIBTiLwepu5hFc9h9S Buk/6mnCToI+v5w5kHbUsgiq2ieqxGS0uF2/RfcC0fN0dRrJN39t9jiWC/r1OBOKg8X6 TCEfurvSr2eUBAf49iIySJ3ketcUOPXYYAa+F/0aKBAugNQt+5rCgD/LnXRlsS01F3Wf 76QjYjIAzAZ5Ha2+ba3B+G6D3MdQ0RXu7hi6jiAKGLfCOZJGhWUe50K3DqxQP9z33Je+ LLlA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=qiHKrawCSEYS4sdc87s3HzBAfn4f+VmuSVImw7uTP4A=; b=7olDX/JUeXOaan7JwZn1x0o7TgBkenQT25xNtCaGHJK+ZovXf8o2DPYNY2nVF/ya0o SaMJNAeQB2Y/D1GoY7wF4nJoDFulclsd4Cw2gqguaQNdDaEk7EFAP9bXUVwjuuiheFNp NrHZOAHHxmTZksTk2TF2/s3MXM6ZZKAPe6Uz1Pa3J/EKXvReuNjSZrJuM5VFfoO/xtL8 9/sESiJb6SDYvdzdeaIvxGXRiQzHOjYuULpXqL6QEKDvZL9/4pFE1Q1tLr0EYmwVhC1P Q5A38/6LxIr/Z/KMF6n93ujZb92PnDOU3dZnB3B4g7iPRS6i12qRFxC/8OSEQsw0KEwz /pUw== X-Gm-Message-State: AOAM531HDX/sPP8T0voHO99vp71NAw33syfVBAn2OYM9NcL6i/wFeUpt 7YLkIHGBDQWJam5XoH5mvhzBMg== X-Google-Smtp-Source: ABdhPJyputnUi3a7shAhiw4xAnFex5EGDJvGRHdrQg+0QCuQstO9afbIuS5G8cxY4+jApO0x5q6rZw== X-Received: by 2002:a17:90b:1651:b0:1dc:aec3:c17 with SMTP id il17-20020a17090b165100b001dcaec30c17mr1405190pjb.43.1651801799549; Thu, 05 May 2022 18:49:59 -0700 (PDT) Received: from [10.44.0.6] ([94.177.118.48]) by smtp.gmail.com with ESMTPSA id e5-20020a636905000000b003aaf27b5ceasm2042378pgc.1.2022.05.05.18.49.53 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 05 May 2022 18:49:58 -0700 (PDT) Subject: Re: [PATCH v2] iommu/sva: Fix PASID use-after-free issue To: Fenghua Yu , Dave Hansen , Thomas Gleixner , Jean-Philippe Brucker , Borislav Petkov , Ingo Molnar , Will Deacon , Robin Murphy , Tony Luck , Jacob Pan , Ravi V Shankar , Peter Zijlstra , Andy Lutomirski , x86 , linux-kernel , iommu@lists.linux-foundation.org References: <20220428180041.806809-1-fenghua.yu@intel.com> <8f50c673-fe92-3c42-993d-43e65fc7235c@linaro.org> From: Zhangfei Gao Message-ID: Date: Fri, 6 May 2022 09:49:50 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <8f50c673-fe92-3c42-993d-43e65fc7235c@linaro.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2022/4/29 上午9:39, Zhangfei Gao wrote: > > > On 2022/4/29 上午2:00, Fenghua Yu wrote: >> The PASID is being freed too early.  It needs to stay around until after >> device drivers that might be using it have had a chance to clear it out >> of the hardware. >> >> As a reminder: >> >> mmget() /mmput()  refcount the mm's address space >> mmgrab()/mmdrop() refcount the mm itself >> >> The PASID is currently tied to the life of the mm's address space and >> freed in __mmput().  This makes logical sense because the PASID can't be >> used once the address space is gone. >> >> But, this misses an important point: even after the address space is >> gone, the PASID will still be programmed into a device.  Device drivers >> might, for instance, still need to flush operations that are outstanding >> and need to use that PASID.  They do this at file->release() time. >> >> Device drivers call the IOMMU driver to hold a reference on the mm >> itself >> and drop it at file->release() time.  But, the IOMMU driver holds a >> reference on the mm itself, not the address space.  The address space >> (and the PASID) is long gone by the time the driver tries to clean up. >> This is effectively a use-after-free bug on the PASID. >> >> To fix this, move the PASID free operation from __mmput() to __mmdrop(). >> This ensures that the IOMMU driver's existing mmgrab() keeps the PASID >> allocated until it drops its mm reference. >> >> Fixes: 701fac40384f ("iommu/sva: Assign a PASID to mm on PASID >> allocation and free it on mm exit") >> >> Reported-by: Zhangfei Gao >> Tested-by: Zhangfei Gao > > Tested-by: Zhangfei Gao > > Use the formal email, thanks > >> Suggested-by: Jean-Philippe Brucker >> Suggested-by: Jacob Pan >> Reviewed-by: Jean-Philippe Brucker >> Signed-off-by: Fenghua Yu Hi, Will this be taken for 5.18? Thanks >> --- >> >> v2: >> - Dave Hansen rewrites the change log. >> - Add Tested-by: Zhangfei Gao >> - Add Reviewed-by: Jean-Philippe Brucker >> >> The original patch was posted and discussed in: >> https://lore.kernel.org/lkml/YmdzFFx7fN586jcf@fyu1.sc.intel.com/ >> >>   kernel/fork.c | 2 +- >>   1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/kernel/fork.c b/kernel/fork.c >> index 9796897560ab..35a3beff140b 100644 >> --- a/kernel/fork.c >> +++ b/kernel/fork.c >> @@ -792,6 +792,7 @@ void __mmdrop(struct mm_struct *mm) >>       mmu_notifier_subscriptions_destroy(mm); >>       check_mm(mm); >>       put_user_ns(mm->user_ns); >> +    mm_pasid_drop(mm); >>       free_mm(mm); >>   } >>   EXPORT_SYMBOL_GPL(__mmdrop); >> @@ -1190,7 +1191,6 @@ static inline void __mmput(struct mm_struct *mm) >>       } >>       if (mm->binfmt) >>           module_put(mm->binfmt->module); >> -    mm_pasid_drop(mm); >>       mmdrop(mm); >>   } > 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 smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (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 B4838C433F5 for ; Fri, 6 May 2022 01:50:04 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 48D10415DD; Fri, 6 May 2022 01:50:04 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id neG3zSKYWDhR; Fri, 6 May 2022 01:50:03 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp4.osuosl.org (Postfix) with ESMTPS id B1F87410E6; Fri, 6 May 2022 01:50:02 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 924E2C0032; Fri, 6 May 2022 01:50:02 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 794E2C002D for ; Fri, 6 May 2022 01:50:01 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 6F03D83FAE for ; Fri, 6 May 2022 01:50:01 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp1.osuosl.org (amavisd-new); dkim=pass (2048-bit key) header.d=linaro.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id F15u_IuSSJTX for ; Fri, 6 May 2022 01:50:00 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.8.0 Received: from mail-pl1-x630.google.com (mail-pl1-x630.google.com [IPv6:2607:f8b0:4864:20::630]) by smtp1.osuosl.org (Postfix) with ESMTPS id 7354483FA7 for ; Fri, 6 May 2022 01:50:00 +0000 (UTC) Received: by mail-pl1-x630.google.com with SMTP id s14so6037994plk.8 for ; Thu, 05 May 2022 18:50:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-transfer-encoding:content-language; bh=qiHKrawCSEYS4sdc87s3HzBAfn4f+VmuSVImw7uTP4A=; b=F98Lin7aPfGaSoPtPZEE8s+NM6NRh+0LKMImQjIgs0Zkhyv4XBwnzeLr8M9xrKogiu MwPofz7GmCqWLwIYjwHHM2U9nChNxdi8IKbXrgyry5F8/nwQUIoIBTiLwepu5hFc9h9S Buk/6mnCToI+v5w5kHbUsgiq2ieqxGS0uF2/RfcC0fN0dRrJN39t9jiWC/r1OBOKg8X6 TCEfurvSr2eUBAf49iIySJ3ketcUOPXYYAa+F/0aKBAugNQt+5rCgD/LnXRlsS01F3Wf 76QjYjIAzAZ5Ha2+ba3B+G6D3MdQ0RXu7hi6jiAKGLfCOZJGhWUe50K3DqxQP9z33Je+ LLlA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=qiHKrawCSEYS4sdc87s3HzBAfn4f+VmuSVImw7uTP4A=; b=eYQ30rAtsGgfTAURmErj+TS8E0X++TMD77kfoKO4cs2CxERwb1a38JINLeL2Nts7Ka x/rWNo+80bsWANngZMC58uyfQSVKtLrEpwbeYUiWEmVr6eQU/IUgf9fnB561SE4C/uVE dcthO2rvKEvK/s5hUrnQAOcsFLcU2CgqVf++rl7fB9HPC0ds8VCWWaKGBRlpsDdLINFJ 8L6QMTcCAbhlealoNVVLIBCpuouETxT7oxPtg1lesoRNTlzMRSkDPoqpyA+kTt3Sfm/x SvWKmm+dsDVPUSIYXTqyekh0MZAMSuHyKwPrdqHAbnscTT/R6u86RmRF1yMA5Ol3PiNI Odpw== X-Gm-Message-State: AOAM531Tc37UmdavjbF9xOjbMsuXWs52W9LSGTiEBbgHxhE47qqEiZbU TAcI83u+506MdypxNW6syrY/e/5SNDsN8Q== X-Google-Smtp-Source: ABdhPJyputnUi3a7shAhiw4xAnFex5EGDJvGRHdrQg+0QCuQstO9afbIuS5G8cxY4+jApO0x5q6rZw== X-Received: by 2002:a17:90b:1651:b0:1dc:aec3:c17 with SMTP id il17-20020a17090b165100b001dcaec30c17mr1405190pjb.43.1651801799549; Thu, 05 May 2022 18:49:59 -0700 (PDT) Received: from [10.44.0.6] ([94.177.118.48]) by smtp.gmail.com with ESMTPSA id e5-20020a636905000000b003aaf27b5ceasm2042378pgc.1.2022.05.05.18.49.53 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 05 May 2022 18:49:58 -0700 (PDT) Subject: Re: [PATCH v2] iommu/sva: Fix PASID use-after-free issue To: Fenghua Yu , Dave Hansen , Thomas Gleixner , Jean-Philippe Brucker , Borislav Petkov , Ingo Molnar , Will Deacon , Robin Murphy , Tony Luck , Jacob Pan , Ravi V Shankar , Peter Zijlstra , Andy Lutomirski , x86 , linux-kernel , iommu@lists.linux-foundation.org References: <20220428180041.806809-1-fenghua.yu@intel.com> <8f50c673-fe92-3c42-993d-43e65fc7235c@linaro.org> From: Zhangfei Gao Message-ID: Date: Fri, 6 May 2022 09:49:50 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <8f50c673-fe92-3c42-993d-43e65fc7235c@linaro.org> Content-Language: en-US X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" CgpPbiAyMDIyLzQvMjkg5LiK5Y2IOTozOSwgWmhhbmdmZWkgR2FvIHdyb3RlOgo+Cj4KPiBPbiAy MDIyLzQvMjkg5LiK5Y2IMjowMCwgRmVuZ2h1YSBZdSB3cm90ZToKPj4gVGhlIFBBU0lEIGlzIGJl aW5nIGZyZWVkIHRvbyBlYXJseS7CoCBJdCBuZWVkcyB0byBzdGF5IGFyb3VuZCB1bnRpbCBhZnRl cgo+PiBkZXZpY2UgZHJpdmVycyB0aGF0IG1pZ2h0IGJlIHVzaW5nIGl0IGhhdmUgaGFkIGEgY2hh bmNlIHRvIGNsZWFyIGl0IG91dAo+PiBvZiB0aGUgaGFyZHdhcmUuCj4+Cj4+IEFzIGEgcmVtaW5k ZXI6Cj4+Cj4+IG1tZ2V0KCkgL21tcHV0KCnCoCByZWZjb3VudCB0aGUgbW0ncyBhZGRyZXNzIHNw YWNlCj4+IG1tZ3JhYigpL21tZHJvcCgpIHJlZmNvdW50IHRoZSBtbSBpdHNlbGYKPj4KPj4gVGhl IFBBU0lEIGlzIGN1cnJlbnRseSB0aWVkIHRvIHRoZSBsaWZlIG9mIHRoZSBtbSdzIGFkZHJlc3Mg c3BhY2UgYW5kCj4+IGZyZWVkIGluIF9fbW1wdXQoKS7CoCBUaGlzIG1ha2VzIGxvZ2ljYWwgc2Vu c2UgYmVjYXVzZSB0aGUgUEFTSUQgY2FuJ3QgYmUKPj4gdXNlZCBvbmNlIHRoZSBhZGRyZXNzIHNw YWNlIGlzIGdvbmUuCj4+Cj4+IEJ1dCwgdGhpcyBtaXNzZXMgYW4gaW1wb3J0YW50IHBvaW50OiBl dmVuIGFmdGVyIHRoZSBhZGRyZXNzIHNwYWNlIGlzCj4+IGdvbmUsIHRoZSBQQVNJRCB3aWxsIHN0 aWxsIGJlIHByb2dyYW1tZWQgaW50byBhIGRldmljZS7CoCBEZXZpY2UgZHJpdmVycwo+PiBtaWdo dCwgZm9yIGluc3RhbmNlLCBzdGlsbCBuZWVkIHRvIGZsdXNoIG9wZXJhdGlvbnMgdGhhdCBhcmUg b3V0c3RhbmRpbmcKPj4gYW5kIG5lZWQgdG8gdXNlIHRoYXQgUEFTSUQuwqAgVGhleSBkbyB0aGlz IGF0IGZpbGUtPnJlbGVhc2UoKSB0aW1lLgo+Pgo+PiBEZXZpY2UgZHJpdmVycyBjYWxsIHRoZSBJ T01NVSBkcml2ZXIgdG8gaG9sZCBhIHJlZmVyZW5jZSBvbiB0aGUgbW0gCj4+IGl0c2VsZgo+PiBh bmQgZHJvcCBpdCBhdCBmaWxlLT5yZWxlYXNlKCkgdGltZS7CoCBCdXQsIHRoZSBJT01NVSBkcml2 ZXIgaG9sZHMgYQo+PiByZWZlcmVuY2Ugb24gdGhlIG1tIGl0c2VsZiwgbm90IHRoZSBhZGRyZXNz IHNwYWNlLsKgIFRoZSBhZGRyZXNzIHNwYWNlCj4+IChhbmQgdGhlIFBBU0lEKSBpcyBsb25nIGdv bmUgYnkgdGhlIHRpbWUgdGhlIGRyaXZlciB0cmllcyB0byBjbGVhbiB1cC4KPj4gVGhpcyBpcyBl ZmZlY3RpdmVseSBhIHVzZS1hZnRlci1mcmVlIGJ1ZyBvbiB0aGUgUEFTSUQuCj4+Cj4+IFRvIGZp eCB0aGlzLCBtb3ZlIHRoZSBQQVNJRCBmcmVlIG9wZXJhdGlvbiBmcm9tIF9fbW1wdXQoKSB0byBf X21tZHJvcCgpLgo+PiBUaGlzIGVuc3VyZXMgdGhhdCB0aGUgSU9NTVUgZHJpdmVyJ3MgZXhpc3Rp bmcgbW1ncmFiKCkga2VlcHMgdGhlIFBBU0lECj4+IGFsbG9jYXRlZCB1bnRpbCBpdCBkcm9wcyBp dHMgbW0gcmVmZXJlbmNlLgo+Pgo+PiBGaXhlczogNzAxZmFjNDAzODRmICgiaW9tbXUvc3ZhOiBB c3NpZ24gYSBQQVNJRCB0byBtbSBvbiBQQVNJRCAKPj4gYWxsb2NhdGlvbiBhbmQgZnJlZSBpdCBv biBtbSBleGl0IikKPj4KPj4gUmVwb3J0ZWQtYnk6IFpoYW5nZmVpIEdhbyA8emhhbmdmZWkuZ2Fv QGZveG1haWwuY29tPgo+PiBUZXN0ZWQtYnk6IFpoYW5nZmVpIEdhbyA8emhhbmdmZWkuZ2FvQGZv eG1haWwuY29tPgo+Cj4gVGVzdGVkLWJ5OiBaaGFuZ2ZlaSBHYW8gPHpoYW5nZmVpLmdhb0BsaW5h cm8ub3JnPgo+Cj4gVXNlIHRoZSBmb3JtYWwgZW1haWwsIHRoYW5rcwo+Cj4+IFN1Z2dlc3RlZC1i eTogSmVhbi1QaGlsaXBwZSBCcnVja2VyIDxqZWFuLXBoaWxpcHBlQGxpbmFyby5vcmc+Cj4+IFN1 Z2dlc3RlZC1ieTogSmFjb2IgUGFuIDxqYWNvYi5qdW4ucGFuQGxpbnV4LmludGVsLmNvbT4KPj4g UmV2aWV3ZWQtYnk6IEplYW4tUGhpbGlwcGUgQnJ1Y2tlciA8amVhbi1waGlsaXBwZUBsaW5hcm8u b3JnPgo+PiBTaWduZWQtb2ZmLWJ5OiBGZW5naHVhIFl1IDxmZW5naHVhLnl1QGludGVsLmNvbT4K CkhpLAoKV2lsbCB0aGlzIGJlIHRha2VuIGZvciA1LjE4PwoKVGhhbmtzCgo+PiAtLS0KPj4KPj4g djI6Cj4+IC0gRGF2ZSBIYW5zZW4gcmV3cml0ZXMgdGhlIGNoYW5nZSBsb2cuCj4+IC0gQWRkIFRl c3RlZC1ieTogWmhhbmdmZWkgR2FvIDx6aGFuZ2ZlaS5nYW9AZm94bWFpbC5jb20+Cj4+IC0gQWRk IFJldmlld2VkLWJ5OiBKZWFuLVBoaWxpcHBlIEJydWNrZXIgPGplYW4tcGhpbGlwcGVAbGluYXJv Lm9yZz4KPj4KPj4gVGhlIG9yaWdpbmFsIHBhdGNoIHdhcyBwb3N0ZWQgYW5kIGRpc2N1c3NlZCBp bjoKPj4gaHR0cHM6Ly9sb3JlLmtlcm5lbC5vcmcvbGttbC9ZbWR6RkZ4N2ZONTg2amNmQGZ5dTEu c2MuaW50ZWwuY29tLwo+Pgo+PiDCoCBrZXJuZWwvZm9yay5jIHwgMiArLQo+PiDCoCAxIGZpbGUg Y2hhbmdlZCwgMSBpbnNlcnRpb24oKyksIDEgZGVsZXRpb24oLSkKPj4KPj4gZGlmZiAtLWdpdCBh L2tlcm5lbC9mb3JrLmMgYi9rZXJuZWwvZm9yay5jCj4+IGluZGV4IDk3OTY4OTc1NjBhYi4uMzVh M2JlZmYxNDBiIDEwMDY0NAo+PiAtLS0gYS9rZXJuZWwvZm9yay5jCj4+ICsrKyBiL2tlcm5lbC9m b3JrLmMKPj4gQEAgLTc5Miw2ICs3OTIsNyBAQCB2b2lkIF9fbW1kcm9wKHN0cnVjdCBtbV9zdHJ1 Y3QgKm1tKQo+PiDCoMKgwqDCoMKgIG1tdV9ub3RpZmllcl9zdWJzY3JpcHRpb25zX2Rlc3Ryb3ko bW0pOwo+PiDCoMKgwqDCoMKgIGNoZWNrX21tKG1tKTsKPj4gwqDCoMKgwqDCoCBwdXRfdXNlcl9u cyhtbS0+dXNlcl9ucyk7Cj4+ICvCoMKgwqAgbW1fcGFzaWRfZHJvcChtbSk7Cj4+IMKgwqDCoMKg wqAgZnJlZV9tbShtbSk7Cj4+IMKgIH0KPj4gwqAgRVhQT1JUX1NZTUJPTF9HUEwoX19tbWRyb3Ap Owo+PiBAQCAtMTE5MCw3ICsxMTkxLDYgQEAgc3RhdGljIGlubGluZSB2b2lkIF9fbW1wdXQoc3Ry dWN0IG1tX3N0cnVjdCAqbW0pCj4+IMKgwqDCoMKgwqAgfQo+PiDCoMKgwqDCoMKgIGlmIChtbS0+ YmluZm10KQo+PiDCoMKgwqDCoMKgwqDCoMKgwqAgbW9kdWxlX3B1dChtbS0+YmluZm10LT5tb2R1 bGUpOwo+PiAtwqDCoMKgIG1tX3Bhc2lkX2Ryb3AobW0pOwo+PiDCoMKgwqDCoMKgIG1tZHJvcCht bSk7Cj4+IMKgIH0KPgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX18KaW9tbXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3Jn Cmh0dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11