From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f199.google.com (mail-oi1-f199.google.com [209.85.167.199]) (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 688A034AB14 for ; Mon, 12 Oct 2026 04:33:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791779611; cv=none; b=l473GLJIoya4dGdEfDaBs5Oza/6pD0P8pTlgCaSkDgJP5JMmTx/lWCfkMBawTlt5Wbez5GNNPTpd36eIhrwVXrwfvBzNZFSGJ8n7BcGdg9Qzb8m2m6ULXtlz9moVk4vnISUAfZz5MWlkNJ290aPwv5ThZrzGGQWazb2NNiUx8kk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791779611; c=relaxed/simple; bh=FVufC84ZVzl1TKa7/0P8wcTzLCOhKrh1XiephzjRhd8=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=I9aozbVcz7w3SQvzRis8UgteDsTQZxSlroox3HNCCsTM0R3XUm47EezKCLMkVdGHyGQtmIm1X+XdtBILLYKkhfRC/gw+Y6hluMxDqjSJp2p+nz1joOBxrcd5Lku8qqJ2y+pkLPySaqM2nzKhVWzJ2jGQm8gh5cuczaBhKKMqm1Y= 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=209.85.167.199 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-f199.google.com with SMTP id 5614622812f47-4b38ea4c6acso1318639b6e.1 for ; Sun, 11 Oct 2026 21:33:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1791779608; x=1792384408; 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=0G0E8OhRGy648DN5LKROx9KakNCqwu+0fkernSUHaGQ=; b=RKSJMVvuIkmUXsKaw2a/0O/WdC6IgxgRRmZuZO87ccnFzAEgkBkGZz83LGX094ToHI 7P2BZMg01rlE7iNdOzBL2RWDr9IeiKOAebwpL4ySGN8k3qzlYi9cNflFPNnP0VV1dX4f 9SyBsG8J/+lBZKq91KZSxIsm9AfVjUF6qzeNLun6Oml+nFkzp8sjAo+xyuHc1rjpWNQJ Xhh7fxPb9tTRN/nADffU3lHTJjH3Wesx4Xnx0PvJFdXsrODXbFcKStwykXAwaIWiGf8e 8q3RvjYR+VwTW/AoiXyYhz8fBrnt4U9DJfvYMSENNSCCwg+EQYl+SCevzzIoQAFXqj+D 6T1Q== X-Gm-Message-State: AFq9FYJ7i8luOEYrWsyweTNIT4kRXchXLAhkDnlSY2sPxDr8TL1NXMdc ifnTxQ+7tK+VgUOTkHDPAcmSadFJEClc7hGQNkhSM73tUphkLWVLmFgBSVV0GPg873R3obec+2S NJgEmZRHcWvncdesD8OprBxV/q6gbE+z08TITq+8E7OgnPKxfO3iGY0yIQWo= Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:ec2:b0:4f3:e133:c574 with SMTP id 5614622812f47-50c4e683233mr6811203b6e.19.1791779608245; Sun, 11 Oct 2026 21:33:28 -0700 (PDT) Date: Sun, 11 Oct 2026 21:33:28 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6acc6318.a150a118.27e199.0042.GAE@google.com> Subject: [syzbot] Monthly ext4 report (Oct 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, 2 new issues were detected and 1 were fixed. In total, 36 issues are still open and 186 have already been fixed. There are also 9 low-priority issues. Some of the still happening issues: Ref Crashes Repro Title <1> 8084 Yes KASAN: out-of-bounds Read in ext4_xattr_set_entry https://syzkaller.appspot.com/bug?extid=f792df426ff0f5ceb8d1 <2> 5595 Yes kernel BUG in ext4_do_writepages https://syzkaller.appspot.com/bug?extid=d1da16f03614058fdc48 <3> 345 Yes WARNING in ext4_iomap_begin (3) https://syzkaller.appspot.com/bug?extid=626aa13bf52efc3aa86e <4> 297 Yes WARNING in ext4_mb_load_buddy_gfp https://syzkaller.appspot.com/bug?extid=fd3f70a4509fca8c265d <5> 16 Yes INFO: task hung in ext4_write_end https://syzkaller.appspot.com/bug?extid=16bf7cd0ebeb1de93aa5 <6> 1 Yes KASAN: use-after-free Read in ext4_read_inline_data (2) https://syzkaller.appspot.com/bug?extid=085a394c92518a04fd09 <7> 513 Yes kernel BUG in ext4_mb_use_inode_pa (2) https://syzkaller.appspot.com/bug?extid=d79019213609e7056a19 <8> 175 Yes WARNING in ext4_journal_check_start (2) https://syzkaller.appspot.com/bug?extid=b75d75f957975f3d40e3 <9> 78 Yes INFO: rcu detected stall in wb_workfn (4) https://syzkaller.appspot.com/bug?extid=5b4f4f81240931b16844 --- 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.