From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f197.google.com (mail-oi1-f197.google.com [209.85.167.197]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 42BCD2F5A0E for ; Fri, 11 Sep 2026 04:33:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.197 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789101208; cv=none; b=pckUuRv8nULjLg3SSYd3mL2C9qmnqgbs39L2tfQVamj0Q6SIl6VcTjsrIP4+/VyUVrN/YX6m8d4LX5+B7Y8xyinv5n3NHbMSszo2Uyya7Y26Kwh4Jehk36ZWENIvD8w2IOtcsIZmTA1dNUWdByK+w1hadPJyhemlnOZlc+CpF/8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789101208; c=relaxed/simple; bh=M0vpayOJusPZNC5TxT6ZBVxJWPK9fbSc3dLYXof4CcY=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=qdJDF8ZM9DUPsmNTWhnWBqnfNbDPyH9fXhZ+sC7pGgFzHH7SQMd9u4baLouDW6oLrLUGRFFoBLlK/fWt+1hi+7JyMPiymv0xcXqza732Zqb/dQ6B7fUpmvtFrQ+PrPcCMfEFG/3RFVvbuZXuRlynAHFWq9YsFnuphlysRQ3jGnA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.167.197 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oi1-f197.google.com with SMTP id 5614622812f47-4b325074c26so987896b6e.2 for ; Thu, 10 Sep 2026 21:33:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1789101206; x=1789706006; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=NhICgvIzJELQ84zwtgc/jRZJI7hwENPGveWeZp0zBhI=; b=HmY6YTlxUCFAnJXtDjAOZc29Zp8HvxG1VLThINev7AAip0yl1gDnp4B5TMdI/URDdo HBgkRoUxRKEmps+9sbn3yJAxWzRtx4/gRHnBnngEwwISW0mTY5byXxGVm9p9hqfSHc1v MsXUPmhCyMC5wuCgxUNzE7dDdJkXXz8UgncKISiX1aTWgPVJji0zoHXO/8OQJ8QUeGwh a1iZ1j929+G1A683kWzmoXXYbEk7P0KBmbsWiacbOpZSm91OXvvqssPxoS9xGJRUSvUs mZPaNVKVevFZgNkgjDaHqcDba9u3hduEMxPjN+M/u8TgFsoDa1/8HELBBC/9naUIbxpz Q16w== X-Gm-Message-State: AFuF++lt/e4hSelx4NSoMsmWLlNhiY+XQlCwrkU+IRM5BhCS2D95/HYr ByQ5jBSCHu4JDQOle9Mvs/TpsQkw5c1NL+MNTxKtdoHH7aV2D8KUJrM5NXTTwfj67IdC32RGx5F U5C2Q0MNdxAnG5kGElBMTWEXe0mjL6YRepZicmkp8alptO94vP7OoSxlZAbk= Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1849:b0:6b1:4cb:39ec with SMTP id 006d021491bc7-6c0ba244d68mr1614687eaf.12.1789101206230; Thu, 10 Sep 2026 21:33:26 -0700 (PDT) Date: Thu, 10 Sep 2026 21:33:26 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6aa38496.6e6c5f9e.28f11f.003e.GAE@google.com> Subject: [syzbot] Monthly ext4 report (Sep 2026) From: syzbot To: linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello ext4 maintainers/developers, This is a 31-day syzbot report for the ext4 subsystem. All related reports/information can be found at: https://syzkaller.appspot.com/upstream/s/ext4 During the period, 3 new issues were detected and 1 were fixed. In total, 39 issues are still open and 184 have already been fixed. There are also 8 low-priority issues. Some of the still happening issues: Ref Crashes Repro Title <1> 21100 Yes possible deadlock in ext4_writepages (2) https://syzkaller.appspot.com/bug?extid=eb5b4ef634a018917f3c <2> 7962 Yes KASAN: out-of-bounds Read in ext4_xattr_set_entry https://syzkaller.appspot.com/bug?extid=f792df426ff0f5ceb8d1 <3> 4881 Yes kernel BUG in ext4_do_writepages https://syzkaller.appspot.com/bug?extid=d1da16f03614058fdc48 <4> 2502 Yes possible deadlock in ext4_xattr_set_handle (7) https://syzkaller.appspot.com/bug?extid=f0b58a1f5075a90dd9a5 <5> 228 Yes WARNING in ext4_iomap_begin (3) https://syzkaller.appspot.com/bug?extid=626aa13bf52efc3aa86e <6> 82 Yes WARNING in ext4_mb_load_buddy_gfp https://syzkaller.appspot.com/bug?extid=fd3f70a4509fca8c265d <7> 16 Yes INFO: task hung in ext4_write_end https://syzkaller.appspot.com/bug?extid=16bf7cd0ebeb1de93aa5 <8> 3026 Yes INFO: task hung in sync_inodes_sb (5) https://syzkaller.appspot.com/bug?extid=30476ec1b6dc84471133 <9> 481 Yes kernel BUG in ext4_mb_use_inode_pa (2) https://syzkaller.appspot.com/bug?extid=d79019213609e7056a19 <10> 111 Yes WARNING in ext4_journal_check_start (2) https://syzkaller.appspot.com/bug?extid=b75d75f957975f3d40e3 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. To disable reminders for individual bugs, reply with the following command: #syz set no-reminders To change bug's subsystems, reply with: #syz set subsystems: new-subsystem You may send multiple commands in a single email message.