From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f200.google.com (mail-oi1-f200.google.com [209.85.167.200]) (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 4A07837F735 for ; Fri, 16 Oct 2026 09:02:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792141349; cv=none; b=s41uGqGAPEtDF2v2vA7SsQVzZI+eT32nF+aL3CxKULwfSafg6w0Jnhy8VswI9F8P8yV8rbFBliL1I7pUhdG9DqAYcBPHMxRC7difM2I9vYNNLx95RwCLuzgZKuoZb8S3CqbCSt7mhvyvJYenNNjgTDNP8kfHRwvwvqnHJSI6C7E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792141349; c=relaxed/simple; bh=03wvLy0zJqzb5h8XKCWjaaV3LCQE8VtzzTV3cdu3yrI=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=NDl72Zc3tCpg119Jg/T3D8maXTpynlotBeQ4hkeAnFAp9k4zpob2/5Uuivioz8DwF+QyqELsvSUsK1UhIqLeggA/9DkqMNthoede2+aENnrEedX6yniyZwS9pxRuA/40O70Pc0dm0dgSu1uBA7t9FxMqlx/xwpHOxQSBcbtZ0ZQ= 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=209.85.167.200 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-f200.google.com with SMTP id 5614622812f47-4b597558c4cso10434320b6e.1 for ; Fri, 16 Oct 2026 02:02:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1792141347; x=1792746147; 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=PGC5rRKkWGHaBncrXQxSGxuRZhZw/YbcZjKWDeEG3to=; b=1R6c0PsQgXyX76qAxU/RwSzsZdOsRcqwhAUgzWzwKdGrt5NHlwFziFxnZy8z6F76pM M6cYhWh7M2KXyW3twnm921qNqjLQoyaPFQXTIFwKYrIzsvOY7JOic5EIUoXQwCuKYWT0 Gycg2z2KhZIUjuiNyAUtjxtwgXcEGkf30o9S0vubJF4XWVSwUFfrSL5TyFcSw8Dwlqr/ T3XvqjMHUbPNhBGWdx74EwCC3ajOe6lc43is1l6gP0F8lzzL3RYOJmHT58A1CKihau6w GUdznDUiDS9k9Tqe98Lz7ptAHwX17Ydrg5wGWAFf5lvDEdq67M55WLt/VtPSJF7U8y/w TE0w== X-Gm-Message-State: AFq9FYJAaqBIEwLSfZiokEjd1ORIEcFFiojcJSYQktHhYVezXaNuIPCR qHte17nbRfTPigoZXOEV0OkSj2FkgAPEJRQYHoBdlfqiMBc6sgDmXWi7sX+p+SoWtxxMSdTNYRe RYvvahi8oK3MHr6dEpXoPTGUfaO9y9rN4QVUTttEXDlJU4V/8+MtI8CuOqOE= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:1923:b0:4c3:95d:91f1 with SMTP id 5614622812f47-50c408514d4mr21867600b6e.1.1792141346978; Fri, 16 Oct 2026 02:02:26 -0700 (PDT) Date: Fri, 16 Oct 2026 02:02:26 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6ad1e822.7952420f.283480.0228.GAE@google.com> Subject: [syzbot] INFO: The task syz.NUM.NUM:LINE has been waiting for writeback completion for more than NUM seconds. (2) From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 7a19f0cc94ad Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=11016fd1580000 kernel config: https://syzkaller.appspot.com/x/.config?x=26d6221a572842ac dashboard link: https://syzkaller.appspot.com/bug?extid=e1f1982d3a90ea3e8cd6 compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/296cd4b77dbf/disk-7a19f0cc.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/e57669ed895f/vmlinux-7a19f0cc.xz kernel image: https://storage.googleapis.com/syzbot-assets/c679c1ad76d4/Image-7a19f0cc.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e1f1982d3a90ea3e8cd6@syzkaller.appspotmail.com INFO: The task syz.7.17472:13261 has been waiting for writeback completion for more than 190 seconds. INFO: The task syz.7.17472:13261 has been waiting for writeback completion for more than 190 seconds. INFO: The task syz.7.17472:13261 has been waiting for writeback completion for more than 191 seconds. --- 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. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup