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 X-Spam-Level: X-Spam-Status: No, score=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A2C8FC7618F for ; Mon, 29 Jul 2019 00:38:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 77C1E206BA for ; Mon, 29 Jul 2019 00:38:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726461AbfG2AiF (ORCPT ); Sun, 28 Jul 2019 20:38:05 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:45441 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726276AbfG2AiB (ORCPT ); Sun, 28 Jul 2019 20:38:01 -0400 Received: by mail-io1-f70.google.com with SMTP id e20so65394761ioe.12 for ; Sun, 28 Jul 2019 17:38:01 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=P/bfC/9DYsjpqYrAz/GLNeevsKIsGM5ry8dJO/L9Ihk=; b=fwGbijWyk21hktHDVCfeslAZSHjhNnooeoq1S4kUCSY5eQ6V4ZuzHmbAJ1xXpApsD8 tYmwVWBoE5/fIGTihbC4CVG0FL5xHD1Fdhi/NPmdUgbGLi+OOivwNiCjWeDrSm4H8zip YoFNEg78WcG3kyRFsaUhAPNm4Sx3++ZT3B9F+ydYsG30D2Hl9fYGLElQoGettTpsjIJx 947a6i5rs8NSA9NQfj+SIv3AK6qpkLIWCPKrfOfmHQ8lbUI875b2vRvPscQITdQ8oTjy 3Syj3oYNQ9DrgYjdAE6GmhisqerMV6JR9NGA1a4XOh+9UuB2yoK4mvu97ofx4x1QkNTS y1pw== X-Gm-Message-State: APjAAAWJWwP/GziXj5nqPgPFbyf7QBsje00ur451ynuG3lKvG3DIOyHt o8AV3byAs6JELnC6owdDcwhPqqsVBkgsiTHmd0K5URGGTIUZ X-Google-Smtp-Source: APXvYqwVilF5qTRSsaLkhL6POlQdbplmHCUtbsaCjcw6sv9rHxSg5wY2IEL+f/ULWS/npxF51AhFcSpVnuGNfy6+mXTXpQgpNXm3 MIME-Version: 1.0 X-Received: by 2002:a05:6638:40c:: with SMTP id q12mr81494815jap.17.1564360680847; Sun, 28 Jul 2019 17:38:00 -0700 (PDT) Date: Sun, 28 Jul 2019 17:38:00 -0700 In-Reply-To: <000000000000c75fb7058ba0c0e4@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000aec4ec058ec71a3d@google.com> Subject: Re: memory leak in bio_copy_user_iov From: syzbot To: agk@redhat.com, axboe@kernel.dk, coreteam@netfilter.org, davem@davemloft.net, dm-devel@redhat.com, hdanton@sina.com, kaber@trash.net, kadlec@blackhole.kfki.hu, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org, shli@kernel.org, snitzer@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this bug to: commit 664820265d70a759dceca87b6eb200cd2b93cda8 Author: Mike Snitzer Date: Thu Feb 18 20:44:39 2016 +0000 dm: do not return target from dm_get_live_table_for_ioctl() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13f4eb64600000 start commit: 0011572c Merge branch 'for-5.2-fixes' of git://git.kernel... git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=100ceb64600000 console output: https://syzkaller.appspot.com/x/log.txt?x=17f4eb64600000 kernel config: https://syzkaller.appspot.com/x/.config?x=cb38d33cd06d8d48 dashboard link: https://syzkaller.appspot.com/bug?extid=03e5c8ebd22cc6c3a8cb syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13244221a00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=117b2432a00000 Reported-by: syzbot+03e5c8ebd22cc6c3a8cb@syzkaller.appspotmail.com Fixes: 664820265d70 ("dm: do not return target from dm_get_live_table_for_ioctl()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection