linux-kernel - Re: [PATCH v9 00/10] ref_tracker: add ability to register a debugfs file for a ref_tracker

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Message-ID: <20250509160036.50d629f9@kernel.org>
Date: Fri, 9 May 2025 16:00:36 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Jeff Layton <jlayton@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Paolo Abeni
 <pabeni@...hat.com>, Simon Horman <horms@...nel.org>, Maarten Lankhorst
 <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>,
 Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>,
 Simona Vetter <simona@...ll.ch>, Jani Nikula <jani.nikula@...ux.intel.com>,
 Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>, Rodrigo Vivi
 <rodrigo.vivi@...el.com>, Tvrtko Ursulin <tursulin@...ulin.net>, Kuniyuki
 Iwashima <kuniyu@...zon.com>, Qasim Ijaz <qasdev00@...il.com>, Nathan
 Chancellor <nathan@...nel.org>, Andrew Lunn <andrew@...n.ch>,
 linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
 dri-devel@...ts.freedesktop.org, intel-gfx@...ts.freedesktop.org, Thomas
 Weißschuh <thomas.weissschuh@...utronix.de>, Jani Nikula
 <jani.nikula@...el.com>
Subject: Re: [PATCH v9 00/10] ref_tracker: add ability to register a debugfs
 file for a ref_tracker_dir

On Fri, 09 May 2025 11:53:36 -0400 Jeff Layton wrote:
> This one just fixes a typo in the ref_tracker_dir_init() kerneldoc
> header. I'm only resending so the CI will pick it up.

We got a bunch of:

[    0.457561][    T0] ref_tracker: ref_tracker: unable to create debugfs file for net_refcnt@...fffff92da4870: -ENOENT
[    0.457561][    T0] ref_tracker: ref_tracker: unable to create debugfs file for net_notrefcnt@...fffff92da48f8: -ENOENT

[    0.973191][    T1] ref_tracker: ref_tracker: unable to create debugfs file for netdev@...f888004d0c5a8: -ENOENT

[    1.150784][    T1] ref_tracker: ref_tracker: unable to create debugfs file for netdev@...f8880053fc5a8: -ENOENT

[    1.660680][    T1] ref_tracker: ref_tracker: unable to create debugfs file for netdev@...f8880085f95a8: -ENOENT

in the CI at boot. Presumably init_net and loopback.

https://netdev-3.bots.linux.dev/vmksft-net-drv-dbg/results/113741/vm-start-thr0-0/stdout