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[209.132.180.67]) by mx.google.com with ESMTP id o18si9581418otk.80.2020.03.24.07.26.22; Tue, 24 Mar 2020 07:26:36 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@android.com header.s=20161025 header.b=EZvggVIe; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=android.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728603AbgCXOZB (ORCPT + 99 others); Tue, 24 Mar 2020 10:25:01 -0400 Received: from mail-pg1-f181.google.com ([209.85.215.181]:40457 "EHLO mail-pg1-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728448AbgCXOY5 (ORCPT ); Tue, 24 Mar 2020 10:24:57 -0400 Received: by mail-pg1-f181.google.com with SMTP id t24so9081577pgj.7 for ; Tue, 24 Mar 2020 07:24:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=android.com; s=20161025; h=to:from:subject:message-id:date:user-agent:mime-version :content-transfer-encoding:content-language; bh=M+b5EPoZFy9O+3BjnkpArQ2labuMLhCHX8xcr7BhQw4=; b=EZvggVIeGhevoh5NNxYlACMHgWkmY/K0mXslP/icPJXJARfdHiBzYBbP2AAXKsTKWf Y+0DkJJBOrWgL+qFV/AZXq6+jssUvCKdQLzQ5rnEmnSKQkEMm66E+WY2BdwdpdlypYW7 3TXISRmLCUK8iy9hTpd51B8hIocqvSzGxUsmhAu8z0YPV65dX4jK4g1TTngz41IOSxDJ D0L+MFnG0876R9ojtX3MKplkVwKiex+gs9GdmUgzfzyIbFEofrR8E+XmyORULQms7ce9 FCyT615Ds3QxgoVubGxDxNt4cU2+05u4A2aZF0H63HsNm+NMq1jpwurBWvzagR/3iOhz 7pKw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:from:subject:message-id:date:user-agent :mime-version:content-transfer-encoding:content-language; bh=M+b5EPoZFy9O+3BjnkpArQ2labuMLhCHX8xcr7BhQw4=; b=ODT/Ihw0FQfi7UR5FI2EBrRHXSvr2AYKvl6dn3xLf6oG8+CrATqnefCHgo09dwG0P/ pZMwLtLVORgdIX2/xM/tGvLETjCVywmcFnAwOvgSXv3lxX6NC1HFK0zWlo5Rl3S8GuPI 6jhwOrMBEZcektpAfenzJNzzAQnznhfknJIMxR95Hdz5cCTprHoUOmu+7YfllvvHXPbA CeA623FFhit6T2Y+8CqAH9L7XTcnKhe4w/QiT/7ZTDThIRbfQENRahGOunEpdYUV2MnD +/W6Qs5Tf/Z9LUuuSxcoLVSuxZXBDt+wBoT311W1kjKHjH0TjQHbkSdoyYRKmjHuJkPf nkVQ== X-Gm-Message-State: ANhLgQ1e4BgXyKQ6OIl3m9o+TttFtc/frDqSEF12DZh8+WFUVcyjtETn 4Ue4Abc8OhQDGj96TVTo6oKFYi/6bj7sFA== X-Received: by 2002:aa7:8f03:: with SMTP id x3mr30431553pfr.40.1585059895835; Tue, 24 Mar 2020 07:24:55 -0700 (PDT) Received: from nebulus.mtv.corp.google.com ([2620:15c:211:200:5404:91ba:59dc:9400]) by smtp.googlemail.com with ESMTPSA id s76sm6680650pgc.64.2020.03.24.07.24.54 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 24 Mar 2020 07:24:55 -0700 (PDT) To: stable , Android Kernel Team , LKML From: Mark Salyzyn Subject: locks use-after-free stable request Message-ID: <52be02d3-3a6a-c8b8-4177-5cc1d67aedd4@android.com> Date: Tue, 24 Mar 2020 07:24:49 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-GB Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Referencing upstream fixes commit dcf23ac3e846ca0cf626c155a0e3fcbbcf4fae8a ("locks: reinstate locks_delete_block optimization") and commit 6d390e4b5d48ec03bb87e63cf0a2bff5f4e116da ("locks: fix a potential use-after-free problem when wakeup a waiter") and possibly address CVE-2019-19769. Please apply to all relevant stable trees including 5.4, 4.19 and below. Confirmed they apply cleanly to 5.4 and 4.19. Signed-off-by: Mark Salyzyn Cc: stable@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: kernel-team@android.com