Received: by 10.192.165.148 with SMTP id m20csp3480537imm;
        Mon, 23 Apr 2018 07:17:26 -0700 (PDT)
X-Google-Smtp-Source: AIpwx49kC3bzZ45/IZvWerPjjyzI0EMy1vSwBx7lHUpMBvgTLgeZUyKHycugRXNU2Ebloj04HNZh
X-Received: by 2002:a17:902:684c:: with SMTP id f12-v6mr21246879pln.139.1524493046384;
        Mon, 23 Apr 2018 07:17:26 -0700 (PDT)
ARC-Seal: i=1; a=rsa-sha256; t=1524493046; cv=none;
        d=google.com; s=arc-20160816;
        b=DpXdde09LuR0J7AgFNw8dXJ4qI22+i9aJr9u1wvX9BC89Z293gSw8n6yU0dld5zm99
         RAdavo8Um+uuIigKy26P+DPTLyB6ajlsDzI3W0dnaMqFs2g6QvmXxsJNmGmrTsyB1u5G
         KCWjXTcGwzWM/QVesC37A7DCKX2+90hdzCc5WKIgLN/uPWAoPqtW7VBmSw2f+f1TFAKt
         g95kAFjuWjniHFA8Wwf3hVetvwNIWuC0lQuTSX2WHXpo4kaP335bNKQjwRJY1WLufC2s
         RXa8cM5JzlyUu1JihmE5c9HKbuFGX6Vq9Mk9lBlLj6e887oDrxyPqNNbfUbKcQLqv+ob
         4m0w==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
        h=list-id:precedence:sender:cc:to:subject:message-id:date:from
         :mime-version:dkim-signature:arc-authentication-results;
        bh=lHLd0UxSfLnoC6Z9z0LgL8ivEClVEFSYY0Cdm2piy/8=;
        b=CAlZkMDKomwJgTpHmnQeM+t2Wb04jwdglta67wsXFFbRe5FT5vWD3FrpUODf+au5qe
         tGcowW70XxpvyphU4qB0vixs7gZO9llR0kFwuFeKrj+n1gsxMOBQSIjvY8+tMoEa2hc/
         453XukZHSCmG4YpRVpY/tFgo2YhoLRySWb9Obg6Wne1kQ7aSMJWhwy1NO6LBfc7i8NpT
         3qOMGuNiyIbw3QIuGdv341KPi1dn9oLLph7odCGu0v2WWhgjxCgby3kMEbOM2ZO8bTCo
         7uuZzxpRQY1NZOe2mwUxBTfhnNxA54MiMrFmKKsVCMGOO1lYFRvGlxakOM+JQGhDZWUB
         RS7g==
ARC-Authentication-Results: i=1; mx.google.com;
       dkim=pass header.i=@gmail.com header.s=20161025 header.b=OfTSRskV;
       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=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67])
        by mx.google.com with ESMTP id e63si11352387pfb.156.2018.04.23.07.17.11;
        Mon, 23 Apr 2018 07:17:26 -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=@gmail.com header.s=20161025 header.b=OfTSRskV;
       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=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1755778AbeDWOP0 (ORCPT <rfc822;tanxianhu@gmail.com> + 99 others);
        Mon, 23 Apr 2018 10:15:26 -0400
Received: from mail-it0-f54.google.com ([209.85.214.54]:52035 "EHLO
        mail-it0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S932066AbeDWOPW (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Mon, 23 Apr 2018 10:15:22 -0400
Received: by mail-it0-f54.google.com with SMTP id o20-v6so11133752itc.1;
        Mon, 23 Apr 2018 07:15:21 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20161025;
        h=mime-version:from:date:message-id:subject:to:cc;
        bh=lHLd0UxSfLnoC6Z9z0LgL8ivEClVEFSYY0Cdm2piy/8=;
        b=OfTSRskVqlWOKZcTIlAy5jgjk1SdKRSa0s1nBGBo5HfuYcFRgxlzlnflwxFeouiEFL
         AX+W6mY5vt2YbMQljy3e3nCMLQ/w3Bk03E2HOYuxmAe2vUPZH/w0NsLiOfrUS/JoxtTR
         /ydXcs+YF/YN9VJBiLbbHeEG4253J351q0xGMGo/PX/28G1EHhOSLcb+9N7FRdvtkEBd
         PWKLb9I3QQwIlbuHu6lAEjTrfB7PB8juPhGHCsGBgIgOrc8RMKjaXi4YJN0Ck+UFYBtn
         uUEqjqSQYq1RinyGScUC10UVg1DRUe6/sq1pIuqCvrLZZnBl8gVLg4Mbul4C6NL2y4tr
         TjYA==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=1e100.net; s=20161025;
        h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc;
        bh=lHLd0UxSfLnoC6Z9z0LgL8ivEClVEFSYY0Cdm2piy/8=;
        b=mYkKstJgqfsN4e5sbS+LtvVmXaILiZMHVZuyAhDATcpytMB0j0+A8PfhnYuVEp8cc7
         LOtCr7h3DkQqvqjzlHlDCgaxjZsxDTVAzffdHF96oIi/cBSHhtsAmhpilBeFJyrjaZEZ
         H8yq1QkAcdEDAo/0VyAKTiFNFndNY9UezPRrMsUtGEeaSpbq7OBMpw6pOFUWsJ4WaE6b
         ubyWYtbdRWVsvHVU5OQS0TO4NDg4Uf8OqpcoYa1t4NuLSljsohlYQ1uI0y11KF5pFq3l
         EixmY93OEm/1Lcn2FUFNS+B0Cy5pah9+bmw2pd1j4Wbm7/kedOwCjbpgfYSdiGyN4s0j
         dvkg==
X-Gm-Message-State: ALQs6tBazmD0U3q4/A7uhnYoXTfjuw/Ui/Mi0c2nIA/07ubJFclZoXVz
        YHF4IiyvmAyvQC3xSLJKj/dKMTRIA90GgEDAHqs=
X-Received: by 2002:a24:a00a:: with SMTP id o10-v6mr14409309ite.34.1524492921543;
 Mon, 23 Apr 2018 07:15:21 -0700 (PDT)
MIME-Version: 1.0
Received: by 2002:a02:b4fb:0:0:0:0:0 with HTTP; Mon, 23 Apr 2018 07:15:20
 -0700 (PDT)
From:   Ilya Dryomov <idryomov@gmail.com>
Date:   Mon, 23 Apr 2018 16:15:20 +0200
Message-ID: <CAOi1vP-oSB65aqWkYX+2AWMHUg4Q8jeRkN65b1xftACR1A=dmA@mail.gmail.com>
Subject: Re: [4.4,50/97] ext4: add validity checks for bitmap block numbers -- regression?
To:     Greg KH <gregkh@linuxfoundation.org>
Cc:     Theodore Tso <tytso@mit.edu>, Wen Xu <wen.xu@gatech.edu>,
        linux-kernel@vger.kernel.org, stable@vger.kernel.org
Content-Type: text/plain; charset="UTF-8"
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Hi Greg,

Commit 7dac4a1726a9 ("ext4: add validity checks for bitmap block
numbers") seems to be the cause of the regression reported here:

  https://marc.info/?l=linux-ext4&m=152416385122029&w=2

ext4 folks are probably busy at LSF, so no reply yet.  Should this
commit be held until we get word from Ted?

Please excuse broken threading.

Thanks,

                Ilya