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[2620:137:e000::1:20]) by mx.google.com with ESMTP id d14-20020a17090a564e00b001bd14e03092si6623691pji.106.2022.03.23.16.43.07; Wed, 23 Mar 2022 16:43:22 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243339AbiCWPIr (ORCPT + 99 others); Wed, 23 Mar 2022 11:08:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60148 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230377AbiCWPIq (ORCPT ); Wed, 23 Mar 2022 11:08:46 -0400 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0A80D75E49 for ; Wed, 23 Mar 2022 08:07:16 -0700 (PDT) Received: by mail-il1-f200.google.com with SMTP id j12-20020a056e02154c00b002c81c9084b9so985159ilu.22 for ; Wed, 23 Mar 2022 08:07:16 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=OCNxa9n6u0UYsSpngdxE2RzTqlLKDflz8tjBWq7Q28s=; b=ZoJy4jzmyHVnmOBcec+DDtO02L+MLQE/+GYUdFJgSAekMC8tQcoauCApKYnekBIbCf v6dxr38XSCwCLlqma0hAxfRimREq2lqLpJ35qSKMvZtNOEAObQB53s3a/iu08ieRFUwJ WL82KvyE4YCwfv0nabn2qKSG/9cMlK8XaZA1XVaKW8hxqolSKMzXWUpzDDsomdUpitXd /rClwwibz3v3dxA9gfFZeE0fhDtQ4aFRK1H28Zf5+KHzC2VovSEYFbSROLIPUJdFQgGD 3putsnAVcmiks5w4ao78GPLeUHRvIA7d8/oH2RkWqkQtOkad1F+d+PAeTZzhR8+nLv9s faIA== X-Gm-Message-State: AOAM533G7zWV8u7mEr9Ed5jb6ULqgPT+hcFWiND1TJBHtA0Ncm0fVfeK jj1IW2UJJ9mnoNaFMaQ5uucWEL1RiT5rvKBHRkIS3KIvl3sp MIME-Version: 1.0 X-Received: by 2002:a05:6e02:17c9:b0:2c7:f556:da52 with SMTP id z9-20020a056e0217c900b002c7f556da52mr262922ilu.96.1648048035383; Wed, 23 Mar 2022 08:07:15 -0700 (PDT) Date: Wed, 23 Mar 2022 08:07:15 -0700 In-Reply-To: <00000000000079c56a05ba1c18c3@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000b8cdba05dae41558@google.com> Subject: Re: [syzbot] KASAN: use-after-free Read in ext4_xattr_set_entry (4) From: syzbot To: adilger.kernel@dilger.ca, cmaiolino@redhat.com, lczerner@redhat.com, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, sjc@chobot.com, syzkaller-bugs@googlegroups.com, tytso@mit.edu, wanjiabing@vivo.com Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2, SORTED_RECIPS,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org syzbot suspects this issue was fixed by commit: commit 6e47a3cc68fc525428297a00524833361ebbb0e9 Author: Lukas Czerner Date: Wed Oct 27 14:18:52 2021 +0000 ext4: get rid of super block and sbi from handle_mount_ops() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=100bc10b700000 start commit: f8ad8187c3b5 fs/pipe: allow sendfile() to pipe again git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=96b123631a6700e9 dashboard link: https://syzkaller.appspot.com/bug?extid=4cb1e27475bf90a9b926 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11131f94d00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15c3761b500000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: ext4: get rid of super block and sbi from handle_mount_ops() For information about bisection process see: https://goo.gl/tpsmEJ#bisection