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From: Sven Eckelmann <sven@narfation.org>
To: "Marek Lindner" <marek.lindner@mailbox.org>,
	"Simon Wunderlich" <sw@simonwunderlich.de>,
	"Antonio Quartulli" <antonio@mandelbit.com>,
	"David S. Miller" <davem@davemloft.net>,
	"Eric Dumazet" <edumazet@google.com>,
	"Jakub Kicinski" <kuba@kernel.org>,
	"Paolo Abeni" <pabeni@redhat.com>,
	"Simon Horman" <horms@kernel.org>,
	b.a.t.m.a.n@lists.open-mesh.org,
	"Network Development" <netdev@vger.kernel.org>,
	"Linus Lüssing" <linus.luessing@c0d3.blue>,
	"Tetsuo Handa" <penguin-kernel@i-love.sakura.ne.jp>
Subject: Re: unregister_netdevice: waiting for batadv_slave_0 to become free. Usage count = 2
Date: Tue, 23 Sep 2025 17:01:30 +0200	[thread overview]
Message-ID: <5043679.31r3eYUQgx@ripper> (raw)
In-Reply-To: <1731a084-79fb-4bc6-9e0b-9b17f3345c4b@I-love.SAKURA.ne.jp>

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On Tuesday, 23 September 2025 16:45:48 CEST Tetsuo Handa wrote:
> On 2025/09/22 23:09, Tetsuo Handa wrote:
> > I suspect that batadv_hard_if_event_meshif() has something to do upon
> > NETDEV_UNREGISTER event because batadv_hard_if_event_meshif() receives
> > NETDEV_POST_INIT / NETDEV_REGISTER / NETDEV_UNREGISTER / NETDEV_PRE_UNINIT
> > events when this reproducer is executed, but I don't know what to do...
> 
> With a change show bottom, the reproducer no longer triggers this problem.
> But is this change correct?

Thanks for the debugging. I have some doubts that the move is correct - but I 
need to check this in detail when I have more time. Unfortunately, this will 
not happen before the end of the week. I hope this is ok for you.

Regards,
	Sven

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  reply	other threads:[~2025-09-23 15:02 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-22 14:09 unregister_netdevice: waiting for batadv_slave_0 to become free. Usage count = 2 Tetsuo Handa
2025-09-23 14:45 ` Tetsuo Handa
2025-09-23 15:01   ` Sven Eckelmann [this message]
2025-09-27 17:21   ` Sven Eckelmann
2025-09-28  1:06     ` Tetsuo Handa
2025-09-28  7:50       ` Sven Eckelmann

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