Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) (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 C087B1E04B9 for ; Fri, 28 Mar 2025 18:44:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743187445; cv=none; b=XRHBrepjDUuBvBx3MAX7vYVGbEtcyQWUzogpWM4+WcYqSZCT7nUARTUiPmp1VRWCqwi5yKRWAO7HPYYnxKrx5NJRLqJrPGgpyPqjMDZI4d0yNlzGZBcFlakZkkO2VYa5shCkGCF1dxH8TGoLXpXs8u+zLY82USjIMp5hY8/CeIo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743187445; c=relaxed/simple; bh=SPecG2wm/IQkCzIGqgAZ0mzsyrh+xZVxCElSIKvubL4=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=EwMhFZI7i4H04NJ2w14shJHs8qB+WDu33vUTK5T3O55IijGNhm/tF+lX7hDLFZxlTk7i5yzcr3tz5nUClfuxMWM9SK2H0sVFutfGzZ1LuTaucvTTb3DTa9KC6p8zoeOkdX5C6giu/9HtOMjosi6r5Tu9wPFcIy+WiDKo7nKxLPQ= 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=209.85.166.70 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-io1-f70.google.com with SMTP id ca18e2360f4ac-85e7f5129d5so231318039f.0 for ; Fri, 28 Mar 2025 11:44:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1743187443; x=1743792243; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=g90s5dJ2ezUv0GG4ZLhmkiZnYoiDPKfC/SO52fRsdOI=; b=LR/fYACxMZ9idrEKFGj+ovoSChTBfvh/xjP/mxjMgVEKbQnQ3VDUmyFyZEmBrGA+5h GMKkMAi6YQ6WBErX6PFqo0lxzqRc2w2NBOH8VQi8fweQ4fEWo3Uwrch4mSSQEirqTQTI h7MpejjEK8Zmxa8rFi4LRwxn2eKwjeRQ/MYIhARpQIujOnBc37xPpLQVc90PRtaBHha0 HfNzA/Fn6YhbsNCt2ClO6XsOv1Ih8Qkh+r5Kl3A3VBMSD8A4gTbfybqPGOl/g4zpYmHD k5lkE0qXqTFvj5aIh7xoj9eG8MptvKhs172mgmvLbXOEymmfy9SnRYVm/C2bxxZMgct1 kj9A== X-Forwarded-Encrypted: i=1; AJvYcCUc7s0bYawgEhe/FucjT0JodH50yF4vQuHa3l7L0tkEfAbZK/8e7L5DOqiwmn9tRftfYIKEPSMkHi7ScM1N@vger.kernel.org X-Gm-Message-State: AOJu0Yw41Bs/4w6syCriYFXh+FsLYbcnSPCw3bOi6WpW8fSILdegubb0 /ipB+5XYAlw3UKwPxyhj6gxBnhHKcOBAFLCMSdfiOgWxz0p2LM2KbeOJc1gWjDnISEv/eVvGnTn o0m+q21FJ8OUXc4J6biEKYPXxB4sO+29VZ6MyS+RMhtADEihyMrgWiHw= X-Google-Smtp-Source: AGHT+IFoCoAM7/Lk0qcdsfAroXF0YLd4ElkidSn67MaROgoMFIwZfHRztGnsixG0Ujvg5uJ9HvohZsxiNtg+jm1cnjPcDCASg0Tz Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:164b:b0:3d4:3a45:d889 with SMTP id e9e14a558f8ab-3d5e09cdb6amr5254815ab.14.1743187442778; Fri, 28 Mar 2025 11:44:02 -0700 (PDT) Date: Fri, 28 Mar 2025 11:44:02 -0700 In-Reply-To: <86991.1743185694@warthog.procyon.org.uk> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67e6edf2.050a0220.2f20fe.0002.GAE@google.com> Subject: Re: [syzbot] [netfs?] INFO: task hung in netfs_unbuffered_write_iter From: syzbot To: brauner@kernel.org, dhowells@redhat.com, jack@suse.cz, jlayton@kernel.org, kprateek.nayak@amd.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, mjguzik@gmail.com, netfs@lists.linux.dev, oleg@redhat.com, swapnil.sapkal@amd.com, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: unregister_netdevice: waiting for DEV to become free unregister_netdevice: waiting for batadv0 to become free. Usage count = 3 Tested on: commit: c7fffb8c netfs: Fix wait/wake to be consistent about t.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git netfs-fixes console output: https://syzkaller.appspot.com/x/log.txt?x=15722a4c580000 kernel config: https://syzkaller.appspot.com/x/.config?x=95c3bbe7ce8436a7 dashboard link: https://syzkaller.appspot.com/bug?extid=62262fdc0e01d99573fc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Note: no patches were applied.