From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f70.google.com (mail-oo1-f70.google.com [209.85.161.70]) (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 C859128BAB9 for ; Mon, 26 Jan 2026 07:12:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769411548; cv=none; b=Mu7chD2sTxbIRwlS9PoIrjm/Wy0MBldzGvVO3NsD/IW9Ui5rZj5JkMkBcvpBebS4IM5gnRPwSeKNl9mG0ItrF1vIwNEUpLQ8oBeffyJH/PATiWNX/trt/rkb9wiwsAv6MNDwJxTaOfzCdCAx7FehxOS1B7+vgHfVgCP5MH27WSw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769411548; c=relaxed/simple; bh=Q/GFPAO36eOOLiksz7sFCwL40jlKCQKy9C4/QL/pGXY=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=CT9nnacimuQFacOdvOV3Koqx5Z0u7CG+JjGQJMVCM+/NddSH9HS7aSzrLjePkRJdfcGQuyOAg2F/YmDv5bpUUITogzpHIcJGWHcqbaVVDz6AZCoK+kq4MogX/UMP9OR4PgyZOGqlLNWgvRPE5ZrDtBLPFWQFO4OFZIV+2MwS/rg= 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=209.85.161.70 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-oo1-f70.google.com with SMTP id 006d021491bc7-662cc350cd1so7045476eaf.1 for ; Sun, 25 Jan 2026 23:12:26 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769411545; x=1770016345; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=cOdTGmTjCzUrittGpLpscG9TJ5mhRUfK+9Y0YptnbWw=; b=xB6bD2FQf6gtzGK6gUjiUvFlj1FoGs3jt4zmlA1IFirVxwfaXoNypZvhWiSnXRbu59 MiUEo246jNd5AxOIkmCcwmNd52ukK3C0ZsIyxP7+Xg8HDRK70ANcY0/2mPxLijCsn7y1 IaxAWK6W0qwYAez13mRme3KW1TnGbc/s3AwUvDYg4vFm00a57ZwXXv/+E3XUMeESiLRO spC3H4LZnQun4BtDx0ko2Q8hF5k74iQWQP6S7lKLtGp0Z4yxEX6NmzUde6qqAJWSG86K Az4K3VUzEKi2saFPllW5uyTB+SU7BKBIY8T0U0KqPg6uCIREfxXpf3WlEZYA98o/ir7q N21A== X-Forwarded-Encrypted: i=1; AJvYcCWtIr00hveq/pTPCAMubq/2zufzqmamGV7Bx+ayJmr9onNH8IwfaFF/0vzyuDQHWpMdJILocMunr5SmcNI=@vger.kernel.org X-Gm-Message-State: AOJu0Yz3lP/YgoShc7E/pihO/J6YzXUdnDWN4xZTAMXEpne+E+i58aFh PBnrJTfG6CeDWV0NkeOSpCyOhIoshu5CmFXOiUfzcYrnPTSMU+9Lx1TIBo+QNCH+1IawlhMYt+k SmoNbfWYQnWcLuATT2ayqCUGVOfKOHQYfnY1MMTANVRdc3wcMvFvsohnGtfI= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:229a:b0:659:9a49:8e15 with SMTP id 006d021491bc7-662e0a00a37mr2064988eaf.7.1769411545625; Sun, 25 Jan 2026 23:12:25 -0800 (PST) Date: Sun, 25 Jan 2026 23:12:25 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <697713d9.050a0220.226181.0017.GAE@google.com> Subject: [syzbot] Monthly kernfs report (Jan 2026) From: syzbot To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tj@kernel.org Content-Type: text/plain; charset="UTF-8" Hello kernfs maintainers/developers, This is a 31-day syzbot report for the kernfs subsystem. All related reports/information can be found at: https://syzkaller.appspot.com/upstream/s/kernfs During the period, 1 new issues were detected and 0 were fixed. In total, 31 issues are still open and 26 have already been fixed. Some of the still happening issues: Ref Crashes Repro Title <1> 3519 Yes possible deadlock in kernfs_iop_getattr https://syzkaller.appspot.com/bug?extid=4bb2305559463e8f6a2a <2> 574 Yes WARNING in kernfs_get (5) https://syzkaller.appspot.com/bug?extid=2f44671e54488d20f0e6 <3> 545 Yes WARNING in kernfs_remove_by_name_ns (3) https://syzkaller.appspot.com/bug?extid=93cbdd0ab421adc5275d <4> 395 No possible deadlock in lookup_slow (3) https://syzkaller.appspot.com/bug?extid=65459fd3b61877d717a3 <5> 136 No possible deadlock in kernfs_fop_write_iter (2) https://syzkaller.appspot.com/bug?extid=1cfd86253864f61b533e <6> 121 Yes INFO: task hung in fdget_pos https://syzkaller.appspot.com/bug?extid=0ee1ef35cf7e70ce55d7 <7> 100 Yes INFO: rcu detected stall in sys_unshare (9) https://syzkaller.appspot.com/bug?extid=872bccd9a68c6ba47718 <8> 43 Yes INFO: rcu detected stall in sys_readlink (5) https://syzkaller.appspot.com/bug?extid=23e14ec82f3c8692eaa9 <9> 37 Yes possible deadlock in kernfs_seq_start https://syzkaller.appspot.com/bug?extid=4c493dcd5a68168a94b2 <10> 32 Yes INFO: task hung in kernfs_remove_by_name_ns (2) https://syzkaller.appspot.com/bug?extid=6d5664213a6db9a5a72c --- 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.