From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f78.google.com (mail-ot1-f78.google.com [209.85.210.78]) (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 14BDC2E5405 for ; Sun, 7 Dec 2025 18:30:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.78 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765132231; cv=none; b=FTMMbX9Dh/5ZIZDuUw2sRgQ8mcLQlndTpUe0c+/ct8WcOTyhvPkIsrwq52N6Y57fwmzRYPEsbQKTudKcC8QB88Yav1/OcRiq3TDiM7zPgDU0XQ8f9LuVhWTTVoM1vsWZXNtTrTgC11aZWGVnu3IF1QHAxrJ7KGZduQfT55a3UfE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765132231; c=relaxed/simple; bh=l4pVexO0zOH62J3jNzuOviYwu5p9FLdDNMomE0hfLIk=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=uzsS1r15Beh4A1tl1dUFATMhoLTtTpjjP5RJRCkHDu/CV2rLPLBPn9Mc/uWXLS3tFv6hTwddQvdr6nWTFiZZsg9G5lOaeo5RxWeC1sMHZv8MlOL+Ea6Lf4bjmztWPRwNyVaMRSrKAB2nnsy2vaqMJJSxzrMF+yyxk6UZRIRtpqo= 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=209.85.210.78 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-ot1-f78.google.com with SMTP id 46e09a7af769-7c7028db074so7088620a34.1 for ; Sun, 07 Dec 2025 10:30:28 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1765132228; x=1765737028; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=U7huK/mSQ8PsNQ8DRi8Ab4PrY9Y4mx5mgIPnXIIHwCc=; b=Dh1UjSUU96m2IEmQetxfdzkAm1JBFtp0xDdtOWYy8lkJVTeOPIifS4uUMuIYTXcjNB mYRxu+MYhb/oVc8huka99tz4MW2/h9ytdgH0JSSfDU8tz5Ek5j3KW0HdWZ8InnoTTVeS hAVnMGghCGosB9yFbbS/MOO/doYJdr+Z82j2Rtf6edxwCTrR5VwzWnA0iN0BTWr/LP5J OxdBkdK6iCTkRD8K4FZRVzkfKLoF+Oou6NROYa1ZIy6gJokYDPQ8Ik/7qwfJl/sndC/m Fg0kcYkJOD3vm7m2ZVXTR1PMDt/CTWb2volst4T2PQy27fEG0TRt00kt9KBKK84Pddb4 1FfQ== X-Gm-Message-State: AOJu0Yyo7/ZFusJD0pvKh4aFzoTzX5lHxVYPY2Jz0idJhVW8fCE4UnKY IWwB0nwDRHmN1iePJ8ddymxfr8StxClHe4PExkYUE0WqGLw7Dymo6qnUyNZ4RLG5b/kQSOTIR+q w2R1ol+4wLgunGWW4uzHJVqoFkWzqkV9jGaVX8xXEnOdlSC/z2vEMDrHesTS8wg== X-Google-Smtp-Source: AGHT+IFEfJR7Ck65WfgCJx3cMoHPXYi8jtWBXYgHNBaR6A5uWCEAnJuEK/1qgQFDWEH5BITab07xUheAMXd2gO/WOmAwLT28n4RS Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:2012:b0:659:9a49:8f06 with SMTP id 006d021491bc7-6599a8d5178mr2676520eaf.23.1765132228150; Sun, 07 Dec 2025 10:30:28 -0800 (PST) Date: Sun, 07 Dec 2025 10:30:28 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6935c7c4.a70a0220.38f243.0068.GAE@google.com> Subject: [syzbot] INFO: The task syz.NUM.NUM:LINE has been waiting for writeback completion for more than NUM seconds. 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: a619fe35ab41 Merge tag 'v6.19-p1' of git://git.kernel.org/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=100c3f42580000 kernel config: https://syzkaller.appspot.com/x/.config?x=be2b9f25000b7ff8 dashboard link: https://syzkaller.appspot.com/bug?extid=bafa7d42e5d90ab3388c compiler: aarch64-linux-gnu-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=114ceab4580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/fa3fbcfdac58/non_bootable_disk-a619fe35.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/418936590540/vmlinux-a619fe35.xz kernel image: https://storage.googleapis.com/syzbot-assets/078fe44a245d/Image-a619fe35.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+bafa7d42e5d90ab3388c@syzkaller.appspotmail.com INFO: The task syz.3.19:3687 has been waiting for writeback completion for more than 1 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 syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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